PSC INC
8-K, 1996-07-29
COMPUTER PERIPHERAL EQUIPMENT, NEC
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                       SECURITIES AND EXCHANGE COMMISSION


                             Washington, D.C. 20549

                                    Form 8-K

                                 CURRENT REPORT

                     Pursuant to Section 13 or 15(d) of the
                         Securities Exchange Act of 1934

        Date of Report (Date of earliest event reported) - July 12, 1996


                                    PSC Inc.
             (Exact name of Registrant as Specified in its Charter)

                                    New York
                 (State or other jurisdiction of Incorporation)

       0-9919                                               16-096936
(Commission File Number)                       (IRS Employer Identification No.)

                    675 Basket Road, Webster, New York 14580
                    (Address of Principal Executive Offices)

                                 (716) 265-1600
              (Registrant's Telephone Number, including Area Code)







<PAGE>


Item 2.  Acquisition or Disposition of Assets

         (a)  On  July  12,  1996,  (the  "Closing  Date"),  pursuant  to and in
accordance  with the terms of the Asset and Stock Purchase  Agreement  dated May
20,  1996 by and  among  PSC Inc.  (the  "Company"),  Spectra-Physics,  Inc.,  a
Delaware corporation  ("Spectra-Physics"),  and Spectra-Physics Holding. S.A., a
French  corporation  ("Spectra SA") and collectively with  Spectra-Physics,  the
"Sellers")  (such  Asset  and  Stock  Purchase   Agreement,   as  amended,   the
"Acquisition Agreement"), (i) PSC Acquisition,  Inc., a Delaware corporation and
a wholly-owned  subsidiary of the Company  ("Acquisition  Corp.") purchased from
Spectra-Physics  all of the issued and  outstanding  shares of capital  stock of
Spectra-Physics  Scanning  Systems,  Inc., a Delaware  corporation  ("Scanning")
(such  shares,  the  "Scanning  Shares")  and the US Assets  (as  defined in the
Acquisition  Agreement,  (ii) the Company  purchased  from Spectra SA all of the
issued  and  outstanding  shares  of  capital  stock  of  TXCOM  S.A.,  a French
Corporation  ("TxCom"),  owned by Spectra S.A. (the "TxCom Shares") (being 7,235
shares of common stock  representing  72% of the issued and outstanding  capital
stock of  TxCom)  and was  assigned  the  TxCom  Contracts  (as  defined  in the
Acquisition  Agreement),  and (iii)  certain  wholly-owned  subsidiaries  of the
Company  purchased from the Seller  Subsidiaries  (as defined in the Acquisition
Agreement) the International  Assets (as defined in the Acquisition  Agreement),
subject to the Assumed International  Liabilities (as defined in the Acquisition
Agreement),  (the  purchase and sale of  securities  and assets  pursuant to the
Acquisition  Agreement are referred to herein  collectively as the  "Stock/Asset
Purchase").   Scanning,  TxCom  and  the  International  Assets  of  the  Seller
Subsidiaries   comprised  the  Data  Capture  Group  of  Spectra-Physics  AB,  a
multinational corporation based in Sweden.

     Simultaneously with the Stock/Asset Purchase, Acquisition Corp. consummated
a merger with Scanning,  in which Scanning was the surviving corporation and its
name was changed to SpectraScan, Inc. ("SpectraScan").

         The aggregate  purchase price paid to the Sellers under the Acquisition
Agreement in respect of the Scanning Shares, the US Assets, the TxCom Shares and
the International  Assets was $138,997,000  subject to adjustment as provided in
Sections 1.4 and 1.6 of the Acquisition  Agreement (the "Purchase  Price").  The
Purchase Price was paid in the following manner:

         (1)    $123,997,000 in cash (the "Cash Payment") on the Closing Date.

         (2)    the issuance by Acquisition Corp. of its $5,000,000 Subordinated
                Installment Promissory Note due 2001.

         (3)    the  issuance by the Company of 977,135 of its common  shares;
                said shares having an aggregate fair market value  (determined
                in accordance with the Acquisition Agreement) of $10,000,000.



<PAGE>



         The sources of funds for the Cash Payment were as follows:

                    (1)    $92,500,000 pursuant to a Credit Agreement dated July
                          12, 1996 among  Acquisition  Corp.,  as Borrower,  the
                          Company,  as  Guarantor,  the  Initial  Lenders  named
                          therein and Fleet Bank,  as Initial  Issuing  Bank and
                          Administrative   Agent.   The  Initial   Lenders  were
                          Corestates   Bank,   N.A.,   Fleet  Bank,   Key  Bank,
                          Manufacturers  and  Traders  Trust  Company,   Pilgrim
                          America Prime Rate Trust, and Sumitomo Bank.

                    (2)    $30,000,000  pursuant to 11.25%  Senior  Subordinated
                          Notes  of  SpectraScan,   due  June  30,  2006  issued
                          pursuant to Securities  Purchase Agreements dated July
                          12,  1996  between  SpectraScan,  the  Company and the
                          purchasers  of  the  Senior   Subordinated  Notes.  In
                          connection  therewith,  the Company issued and sold to
                          the  Purchasers  of  the  Senior   Subordinated  Notes
                          warrants evidencing rights to purchase an aggregate of
                          975,000 of its Common  Shares.  The  Purchasers of the
                          Subordinated  Notes and  Warrants  were  John  Hancock
                          Mutual life Insurance  Company,  John Hancock Variable
                          Life  Insurance  Company,  the Lincoln  National  Life
                          Insurance Company (MZP), Lincoln National Income Fund,
                          Inc.,  Security-  Connecticut Life Insurance  Company,
                          Security-Connecticut  Corporation,  and the  Equitable
                          Life Assurance Society of the United States.

                    (3)    $1,497,000 from the Company's cash on hand.

         The acquisition  will be accounted for as a purchase.  The Company will
recognize  a one-time  write-off  of  in-process  research  and  development  in
connection with the transaction  aggregating  approximately  $60 million,  pre-
tax.  In  addition,   the  Company  will   recognize  an   acquisition   related
restructuring charge which amount will be finalized by September 30, 1996.

         (b) Scanning is a leading manufacturer of countertop and in-counter bar
code scanners used primarily in retail checkout applications.  The Company plans
to continue Scanning's operations in Scanning's Eugene, Oregon facilities.

Item 5.  Other Events

         On July 12, 1996 the Company  named John F. O'Brien,  President of 
Scanning,  as President of the Company.  L. Michael Hone retains his position as
the Company's Chairman and Chief Executive Officer.


<PAGE>


Item 7.  Financial Statements and Exhibits

         (a)      Financial Statements of business acquired:

                  It  is  impracticable   to  provide  the  Combined   Financial
Statements  of the Data Capture Group of  Spectra-Physics  AB as of December 31,
1995 and  December  31,  1994 at this  time.  They  will be filed on later  than
September 25, 1996.

         (b)      Pro forma financial information:

                  It  is  impracticable  to  provide  the  pro  forma  financial
information at this time. They will be filed no later than September 25, 1996.

         (c)      Exhibits:

         2.1      Asset and Stock Purchase  Agreement  among PSC Inc.,  Spectra-
Physics,  Inc. and Spectra-Physics  Holding, S.A. dated May 20, 1996, as amended
by letter dated July 12, 1996.

         3.1      Certificate  of Merger of PSC  Acquisition, Inc. into Spectra-
Physics  Scanning  Systems,  Inc.
filed with the Secretary of State of Delaware on July 12, 1996.

         4.1      Form of 11.25%  Senior  Subordinated  Note of  SpectraScan,   
Inc. due June 30, 2006 (Notes were issued to seven  Purchasers  in the aggregate
principal amount of $30,000,000).

         4.2      Form of  Note  Guarantee  dated  July  12,  1996  made  by PSC
Inc. and each of the domestic subsidiaries of PSC Inc. to each of the Purchasers
of the Senior Subordinated Notes.

         4.3      Form of Warrant  issued to the  Purchasers  named in the 
Securities  Purchase  Agreements  dated July 12, 1996  (Warrants  were issued to
seven Purchasers for an aggregate of 975,000 common shares of the Company).

         4.4      Subordinated  Installment  Promissory Note of PSC Acquisition,
Inc. issued to Spectra-Physics, Inc. on July 12, 1996 in the principal amount of
$5,000,000.

         4.5      Note Guarantee dated July 12, 1996 made by PSC Inc. to Spectra
Physics, Inc.

         10.1     Securities  Purchase   Agreement  dated  July 12,  1996  among
PSC Inc.,  SpectraScan,  Inc. and Equitable Life Assurance Society of the United
States (separate but identical  Securities Purchase Agreements were addressed to
each of the Other Purchasers of the Senior Subordinated Notes).


<PAGE>



         10.2 Credit Agreement dated July 12, 1996 among PSC Acquisition,  Inc.,
as Borrower, PSC Inc. as Guarantor,  the Initial Lenders named therein and Fleet
Bank as Initial  Issuing Bank and  Administrative  Agent,  together with Form of
Term A Note, Form of Term B Note and Form of Working Capital Note.

         10.3     Registration  Rights and Holdback  Agreement  dated July 12, 
1996 between Spectra-Physics, Inc. and PSC Inc.

         10.4     Non-Compete Agreement dated July 12, 1996 between Spectra-
Physics, Inc. and PSC Inc.

         10.5     Escrow  Agreement  dated  July 12,  1996  among PSC  Inc., 
Spectra-Physics,  Inc.  and The Chase Manhattan Bank N.A.


                                   SIGNATURES

         Pursuant to the  requirements  of the Securities  Exchange Act of 1934,
the  registrant  has duly  caused  this report to be signed on its behalf by the
undersigned hereunto duly authorized.

                                    PSC Inc.
                                    (Registrant)



Dated:   July 25, 1996              By:     /s/ William J. Woodard
                                            William J. Woodard
                                            Vice President, Finance & Treasurer


Date:   July 25, 1996              By:      /s/ Scott D. Deverell
                                            Scott D. Deverell
                                            Controller & Principal Accounting
                                                 Officer


                                                                     Exhibit 2.1
                                                                  



                                                                  CONFIDENTIAL


         ____________________________________________________________



                      ASSET AND STOCK PURCHASE AGREEMENT



                                 by and among



                                   PSC Inc.
                            a New York corporation

                                      and

                             SPECTRA-PHYSICS, INC.
                            a Delaware corporation

                                      and

                         SPECTRA-PHYSICS HOLDING, S.A.
                             a French corporation
                           _________________________

                              Dated May 20, 1996
                           _________________________


            _______________________________________________________

<PAGE>

                               TABLE OF CONTENTS

                                                                          Page


      ARTICLE I         THE TRANSACTION....................................  2
            1.1   Sale and Purchase of Shares, Purchased Assets,
            TxCom Shares and TxCom Rights..................................  2
            1.2   Definitions..............................................  3
                  (a)   Certain Definitions................................  3
                  (b)   Other Definitions..................................  6
            1.3   Pre-Closing Transfer of Certain Assets of
            Scanning; Industrial Revenue Bonds.............................  8
            1.4   Purchase Price...........................................  8
            1.5   Payment of Cash Portion; Delivery of Buyer Stock
            and Note; Assumption of Liabilities............................  9
            1.6   Purchase Price Adjustment................................ 10
            1.7   Allocation of Purchase Price............................. 12
            1.8   Closing.................................................. 12
            1.9   Deliveries and Proceedings at Closing.................... 13
                  (a)   Deliveries by Seller............................... 13
                  (b)   Deliveries by Buyer................................ 13
                  (c)   Other Deliveries................................... 14

ARTICLE II        REPRESENTATIONS AND WARRANTIES OF SELLER................. 14
            2.1   Representations and Warranties Pertaining to the
            Business....................................................... 14
                  (a)   Organization and Qualification..................... 14
                  (b)   Capitalization..................................... 14
                  (c)   Subsidiaries....................................... 15
                  (d)   Authority.......................................... 15
                  (e)   Non-Contravention.................................. 16
                  (f)   Governmental Consents and Approvals................ 16
                  (g)   Combined Financial Statements...................... 17
                  (h)   Taxes.............................................. 17
                  (i)   Properties......................................... 18
                  (j)   Environmental Matters.............................. 19
                  (k)   Patents; Trademarks etc............................ 19
                  (l)   Domestic Employee Benefit Plans.................... 20
                  (m)   Foreign Employee Benefit Plans..................... 21
                  (n)   Contracts.......................................... 22
                  (o)   No Changes......................................... 23
                  (p)   Litigation or Proceedings.......................... 24
                  (q)   Compliance with Laws............................... 24
                  (r)   Labor Matters...................................... 25
                  (s)   Insurance Coverage................................. 25
                  (t)   Certain Transactions with Affiliates............... 25
                  (u)   Securities Act..................................... 25
                  (v)   Banks.............................................. 25
                  (w)   Powers of Attorney................................. 25
            2.2   Excluded International Assets, Etc....................... 26

      ARTICLE III       REPRESENTATIONS AND WARRANTIES OF BUYER............ 26
            3.1   Representations and Warranties of Buyer.................. 26



                                   - i -

<PAGE>

                          TABLE OF CONTENTS (cont'd)

                                                                          Page

                  (a)   Organization and Qualification..................... 26
                  (b)   Capitalization..................................... 27
                  (c)   Subsidiaries....................................... 27
                  (d)   Authority.......................................... 27
                  (e)   Non-Contravention.................................. 28
                  (f)   Governmental Consents and Approvals................ 28
                  (g)   Financial Statements............................... 29
                  (h)   Taxes.............................................. 29
                  (i)   Patents; Trademarks................................ 29
                  (j)   No Changes......................................... 29
                  (k)   Litigation or Proceedings.......................... 30
                  (l)   Compliance with Laws............................... 31
                  (m)   Buyer's Stock...................................... 31
                  (n)   Securities Act..................................... 31
                  (o)   SEC Filings........................................ 31
                  (r)   Note............................................... 32
            3.2   Certain Limitations on Representations and
            Warranties..................................................... 32

      ARTICLE IV        CERTAIN OBLIGATIONS OF SELLER...................... 33
            4.1   Conduct of Business Pending Closing...................... 33
            4.2   Access................................................... 34
            4.3   Exclusive Dealing........................................ 34

      ARTICLE V         CERTAIN OBLIGATIONS OF BUYER....................... 35
            5.1   Conduct of Business Pending Closing...................... 35
            5.2   Access................................................... 36

      ARTICLE VI        CONDITIONS TO CLOSING; TERMINATION................. 36
            6.1   Conditions Precedent to Obligations of the Buyer
            Group.......................................................... 36
                  (a)   Bringdown of Representations and Warranties........ 36
                  (b)   Performance and Compliance......................... 37
                  (c)   Opinion of Counsel................................. 37
                  (d)   Waiting Periods.................................... 37
                  (e)   Litigation......................................... 37
                  (f)   Non-Compete Agreement.............................. 37
                  (g)   Transition Services Agreement...................... 37
                  (h)   Minute Books and Resignations...................... 37
                  (i)   Permits, Approvals and Authorizations.............. 38
                  (j)   Certificate of Incorporation, Bylaws............... 38
                  (k)   Certificates of Good Standing...................... 38
                  (l)   Secretary's Certificate............................ 38
            6.2   Conditions Precedent to the Obligations of the
            Seller Group................................................... 38
                  (a)   Bringdown of Representations and Warranties........ 38
                  (b)   Performance and Compliance......................... 38
                  (c)   Opinion of Counsel for the Buyer Group............. 39
                  (d)   Waiting Periods.................................... 39
                  (e)   Litigation......................................... 39



                                   - ii -

<PAGE>

                          TABLE OF CONTENTS (cont'd)

                                                                          Page

                  (f)   TxCom Guarantee.................................... 39
                  (g)   Permits, Approvals and Authorizations.............. 39
                  (h)   Certificate of Incorporation, Bylaws............... 39
                  (i)   Certificates of Good Standing...................... 39
                  (j)   Secretary's Certificate............................ 39
            6.3   Termination.............................................. 39

      ARTICLE VII       CERTAIN ADDITIONAL COVENANTS....................... 40
            7.1   Costs, Expenses and Taxes................................ 40
            7.2   Brokers.................................................. 40
            7.3   Employment............................................... 41
            7.4   Best Efforts............................................. 41
            7.5   Transition Services Agreement............................ 41
            7.6   Regulatory Filings....................................... 41
            7.7   Use of Name.............................................. 42
            7.8   Registration Rights...................................... 44
            7.9   TxCom Guarantee.......................................... 44
            7.10  Buyer's Further Assurances............................... 44
            7.11  Restriction on Sale of Buyer Stock....................... 44

      ARTICLE VIII      INDEMNIFICATION.................................... 45
            8.1   Indemnification by the Seller............................ 45
            8.2   Indemnification By Buyer................................. 46
            8.3   Limitations on Indemnification Obligations............... 46
            8.4   Procedures Relating to Indemnification................... 48
            8.5   Exclusive Remedy......................................... 49

      ARTICLE IX        TAX MATTERS........................................ 49
            9.1   Tax Responsibility....................................... 49
            9.2   Section 338(h)(10) Election.............................. 51
            9.3   Refunds and Credits...................................... 53
            9.4   Tax Sharing Agreements................................... 54
            9.5   Dispute Resolution....................................... 54

      ARTICLE X         MISCELLANEOUS...................................... 54
            10.1  Notices.................................................. 54
            10.2  Successors and Assigns; Benefit.......................... 56
            10.3  Public Announcements..................................... 56
            10.4  Governing Law............................................ 56
            10.5  Headings................................................. 56
            10.6  Amendments............................................... 56
            10.7  Limitation on Knowledge.................................. 56
            10.8  Foreign Sales Agreements and TxCom Agreement............. 57
            10.9  Consent to Jurisdiction.................................. 57
            10.10 Post-Closing Access...................................... 58
            10.11 Regarding Certain Consents............................... 58
            10.12 Further Assurances....................................... 59
            10.13 Preservation of Records Information...................... 59
            10.14 Further Audit Assistance................................. 59
            10.15 Specific Performance..................................... 59



                                   - iii -

<PAGE>

                          TABLE OF CONTENTS (cont'd)

                                                                          Page

            10.16 Entire Agreement......................................... 60




                                   - iv -
<PAGE>

                                   EXHIBITS


      Exhibit     A           -     Foreign Sales Agreements
                  B           -     TxCom Share Transfer Order
                  C           -     TxCom Assignment and Assumption
                                    Agreement
                  D           -     Terms of Note
                  E           -     Form of Escrow Agreement
                  F           -     Allocation of Purchase Price
                  G           -     Opinion of Seller's Counsel
                  H           -     Form of Non-Compete Agreement
                  I           -     Form of Transition Services
                                     Agreement
                  J           -     Opinion of Buyer's Counsel
                  K           -     Form of Registration Rights
                                    Agreement



                                   - v -
<PAGE>

                      ASSET AND STOCK PURCHASE AGREEMENT


     This is an ASSET AND STOCK PURCHASE  AGREEMENT (the "Agreement")  dated May
20,  1996,   by  and  among  PSC  Inc.,  a  New  York   corporation   ("Buyer"),
Spectra-Physics,  Inc., a Delaware  corporation  ("Seller") and  Spectra-Physics
Holding, S.A., a French corporation ("SP Holding").


                                  BACKGROUND

     A. Seller is engaged,  through  Spectra-Physics  Scanning Systems,  Inc., a
Delaware  corporation  ("Scanning"),  T.X.C.O.M.,  S.A.,  a  French  corporation
("TxCom"),  and the Seller  Subsidiaries (as defined below),  in the business of
designing,  manufacturing  and  marketing  bar  code  scanners,  wireless  radio
frequency systems and retail automation systems for the automatic identification
and data collection industry (the "Business").  The Seller Subsidiaries  consist
of  Spectra-Physics  S.A., a French corporation,  Spectra-Physics  S.r.l.,  an
Italian corporation,  Spectra-Physics K.K., a Japanese company, Spectra-Physics
GmbH, a German corporation,  Spectra-Physics Pty Ltd., an Australian corporation
and Spectra-Physics Ltd, a United Kingdom corporation.

     B. The Business is  conducted  through and  consists of (a)  Scanning,  (b)
TxCOM,  (c) certain of the assets and  liabilities  of the Seller  Subsidiaries,
which assets (the  "International  Assets") and which  liabilities (the "Assumed
International  Liabilities") are more  particularly  described in Section 1.2(a)
below and (d) the  patents,  subject to the license  listed in  Schedule  2.1(t)
hereto (the "US Assets"), owned by Seller and used in the Business which are set
forth in Schedule 2.1(k) hereto (the International  Assets and the US Assets are
herein referred to as the "Purchased Assets").

     C. Seller is the sole owner of all of the issued and outstanding  shares of
capital stock of Scanning (the "Shares").

     D. SP Holding  owns 7235  shares of common  stock (or 72% of the issued and
outstanding  capital  stock) of TxCom (the "TxCom  Shares") and has the right to
purchase all of the remaining issued and outstanding capital stock of TxCom.

     E. Seller  desires to sell to Buyer,  and Buyer  desires to  purchase,  the
Shares and the US Assets. Seller desires to cause each Seller Subsidiary to sell
to one or more wholly-owned subsidiaries of Buyer (each a "Buyer Subsidiary" and
collectively  the "Buyer  Subsidiaries"),  and Buyer  desires to cause the Buyer
Subsidiaries  to  purchase,  the  International  Assets,  subject to the Assumed
International  Liabilities,  all upon the terms and  subject  to the  conditions
hereinafter set forth. SP Holding desires to sell the TxCom Shares and to assign
certain  contracts  (including  certain  contract  rights (the "TxCom  Rights"),
subject to certain contract  obligations (the "TxCom Obligations") (each as more
particularly described in Section 1.2(a)) (the "TxCom Contracts") to Buyer (or a
Buyer  Subsidiary) and Buyer desires to purchase (or cause such Buyer Subsidiary
to purchase)  the TxCom  Shares and assume the TxCom  Contracts  (including  the
TxCom  Rights,  subject to the TxCom  Obligations).  Seller,  SP Holding and the
Seller  Subsidiaries are sometimes  referred to herein as the "Seller Group" and
Buyer and the Buyer  Subsidiaries are sometimes referred to herein as the "Buyer
Group."

<PAGE>

                                      TERMS

     In consideration of the mutual covenants  contained herein and intending to
be legally bound hereby, the parties hereto agree as follows:


                                    ARTICLE I

                                 THE TRANSACTION

     1.1 Sale And Purchase Of Shares,  Purchased Assets,  Txcom Shares And Txcom
Rights.  Subject to the terms and conditions  contained  herein,  at the Closing
referred to in Section 1.8 below:

          (a) Seller shall sell, convey, assign,  transfer and deliver to Buyer,
     and Buyer shall purchase and acquire from Seller, the Shares;

          (b) Seller shall sell, convey, assign,  transfer and deliver to Buyer,
     and Buyer shall purchase and acquire from Seller, the US Assets;

          (c) Seller shall cause each Seller Subsidiary to sell, convey, assign,
     transfer and deliver to the Buyer  Subsidiaries,  and Buyer shall cause one
     or more  Buyer  Subsidiaries  to  purchase  or  acquire  from  each  Seller
     Subsidiary, the International Assets of such Seller Subsidiary,  subject to
     the Assumed International  Liabilities of such Seller Subsidiary.  The sale
     of assets and transfer of  liabilities by each Seller  Subsidiary  shall be
     made to the Buyer  Subsidiaries  by means of a separate  purchase  and sale
     agreement (each a "Foreign Sales Agreement" and collectively,  the "Foreign
     Sales  Agreements"),  which  agreements  shall each be substantially in the
     form of Exhibit A hereto,  with such  changes  therein as are  necessary or
     appropriate under local law or as the parties may otherwise agree; and

          (d) SP Holding shall sell,  convey,  assign,  transfer and deliver the
     TxCom Shares and assign the TxCom Contracts (including the TxCom Rights and
     the TxCom Obligations),  to Buyer (or a Buyer Subsidiary),  and Buyer shall
     purchase and acquire (or shall cause such Buyer  Subsidiary to purchase and
     acquire)  from SP Holding the TxCom  Shares and assume the TxCom  Contracts
     (including  the  TxCom  Rights,  subject  to the TxCom  Obligations).  Such
     transfer  shall be made by SP Holding to Buyer (or a Buyer  Subsidiary)  by
     means of (i) a share transfer  order, in customary form, and (ii) the TxCom
     Assignment and Assumption Agreement (collectively,  the "TxCom Agreement"),
     which  order  and which  agreement  shall be  substantially  in the form of
     Exhibit B and Exhibit C, respectively, hereto.
<PAGE>

      1.2   Definitions.

            (a)   Certain Definitions.

     (i) The term "International  Assets" shall mean all assets,  properties and
rights  (contractual  or  otherwise)  of  every  kind,  nature  and  description
(including,  without  limitation,  (i) furniture,  machinery,  parts,  tools and
equipment,  if any, (ii)  inventory,  (iii) accounts  receivable,  (iv) license,
distribution,  dealer,  sales  representative,   supplier,  service,  and  other
commercial agreements,  if any, (v) sales orders,  purchase orders,  quotations,
and bids, (vi) prepaid items, if any, (vii)  licenses,  permits,  authorizations
and  approvals,  if any,  (viii)  customer  lists,  (ix) books and records,  (x)
technical  manuals  and  product  and sales  literature,  (xi) all rights  under
express or implied warranties,  (xii) goodwill and (xiii) all claims or defenses
relating to any of the foregoing or to the Assumed International Liabilities (as
defined below)) of the Seller Subsidiaries existing on the Closing Date that are
used primarily in the Business, except for the Excluded International Assets (as
defined below).

     (ii) The term  "Excluded  International  Assets"  shall  mean cash and cash
equivalents,  accounts receivable represented by discounted notes, any assets or
rights not used  primarily  in, or primarily  benefitting,  the Business and any
rights under  insurance  policies except for claims related to the Business that
are covered under such insurance  policies but that have not yet been submitted.
Excluded  International  Assets shall specifically  include leasehold rights and
improvements (other than with respect to the Purchased  International Offices as
hereinafter  defined),  central  management  information  systems  of the Seller
Subsidiaries and related office equipment (but not including any readily-movable
local area network and wide area  communication  network  used  primarily in the
Business),  telephone  systems,  other office equipment (such as photocopiers or
audiovisual equipment) not used exclusively in the Business,  security deposits,
any claims  for  refunds of Taxes (as  hereinafter  defined)  paid by the Seller
Subsidiaries,  and except as set forth in  Section  7.7 of this  Agreement,  any
rights in or to the name  "Spectra-Physics" or the Spectra-Physics  stylized "S"
logo.

<PAGE>

     (iii)  The  term  "Assumed   International   Liabilities"  shall  mean  all
liabilities and obligations (contractual or otherwise) of every kind, nature and
description,  known or unknown, of the Seller Subsidiaries that primarily relate
to the  Business,  the  conduct of the  Business  or the  International  Assets,
excepting the Excluded  International  Liabilities (as hereinafter defined). For
avoidance  of  doubt,  Assumed  International   Liabilities  shall  include  all
obligations  related to the Business's offices located in Belgium and Spain (the
"Purchased  International  Offices") (such locations being further  specified in
Schedule 2.1(i) hereto).

     (iv) The term "Excluded International Liabilities" shall mean the following
liabilities  of  the  Seller  Subsidiaries:  (i)  liabilities  for  Taxes,  (ii)
liabilities or obligations  for facility costs,  such as obligations  under real
estate  leases  (except with respect to the  Purchased  International  Offices),
(iii) trade payables for goods and services  relating to the overall  operations
of the Seller  Subsidiaries,  such as for office supplies,  facility maintenance
services  and   telephone   service   (except  with  respect  to  the  Purchased
International  Offices),  and (iv) recourse  liabilities  in respect of accounts
receivable represented by discounted notes.

     (v) The term "Foreign Business Employees" shall mean (i) those employees of
the Seller  Subsidiaries  set forth on Schedule  1.2(A)(v) hereto (provided such
employees are employees of the Seller  Subsidiaries  on the Closing  Date),  and
(ii) any other employees of the Seller  Subsidiaries hired after the date hereof
and employed by the Seller  Subsidiaries  on the Closing Date whose work relates
primarily to the business and operations of the Business,  such as employees who
sell and service the products sold by the Business, employees who process orders
and collect  receivables with respect to products sold by the Business,  support
staff whose  primary  function is to support such  salesmen,  servicemen,  order
processors  and accounts  receivable  clerks,  and  managerial  employees  whose
function is to manage such  salesmen,  servicemen,  order  processors,  accounts
receivable clerks and staff.

     (vi) The "TxCom  Contracts" shall mean the (i) Share Purchase  Agreement by
and  between  Compagnie  Auxiliaire  de  Telecommunication,  Ali Ben  Ameur,  GH
Conseil,  Christian Hart de Keating,  Philippe Malaise,  Joseph Boissy,  Vincent
Baumier,  Daniel Mawas, Bernard Malaise, Alain Bonodot, SP Holding and Scanning,
(ii) Shareholders and Management  Agreement by and between  Spectra-Physics  AB,
Scanning, SP Holding,  Vincent Baumier,  Bernard Malaise, Daniel Mawas and Alain
Bonodot,  and (iii)  Representation and Warranty Agreement by and between TxCom,
SP Holding,  Vincent Baumier,  Bernard Malaise,  Daniel Mawas and Alain Bonodot,
all dated as of August 28, 1995.
<PAGE>

     (vii)  The  "TxCom  Rights"  shall  mean all of  Spectra-Physics  AB's,  SP
Holding's and Scanning's right, title or interest in and to the TxCom Contracts.

     (viii) The "TxCom  Obligations" shall mean all of Spectra-Physics  AB's, SP
Holding's and Scanning's liabilities and obligations under the TxCom Contracts.

     (ix)  The term  "Subsidiary",  when  used in this  Agreement,  means,  with
respect to any corporation or entity ("Person"),  any other corporation or other
business  entity in which such Person owns directly or indirectly  fifty percent
(50%) or more of the effective  voting power or equity interest or has the power
or authority to control such corporation or other business entity.

     (x) The term  "Industrial  Revenue  Bonds"  shall  mean the State of Oregon
Economic Development Commission $4,400,000 Industrial Revenue Bonds, dated as of
July 1, 1979.

     (xi) The term "Material  Adverse Effect" means any material  adverse effect
on the  financial  condition or results of operation of the Business  taken as a
whole,  other than with  respect  to any  adverse  effects  which,  directly  or
indirectly,  relate to or result from (i) public or industry  knowledge relating
to the  transactions  contemplated  by this Agreement or (ii) past,  existing or
prospective  economic,  regulatory or other conditions affecting the Business or
the industries in which the Business  competes;  provided that no act, omission,
occurrence,  expense  or  liability  shall be  deemed  to be or result in such a
material  adverse  effect  unless the loss to or cost borne by the  Business  by
reason of such act, omission,  occurrence,  expense or liability is greater than
US $300,000;  and provided  further that for purposes of Section  6.1(A) of this
Agreement no act, omission,  occurrence, expense or liability shall be deemed to
be or result in such a material  adverse effect unless the loss to or cost borne
by the  Business  by  reason  of such  act,  omission,  occurrence,  expense  or
liability is greater than US $2,000,000.

     (xii)  The term  "Material  Adverse  Effect on  Buyer"  means any  material
adverse  effect on the  financial  condition or results of operation of Buyer or
its  Subsidiaries  taken as a whole,  other  than with  respect  to any  adverse
effects which,  directly or  indirectly,  relate to or result from (i) public or
industry knowledge  relating to the transactions  contemplated by this Agreement
or (ii) past, existing or prospective  economic,  regulatory or other conditions
affecting  Buyer or its  Subsidiaries  or the  industries in which they compete;
provided that no act, omission, occurrence, expense or liability shall be deemed
to be or result in such a material adverse effect on Buyer unless the loss to or
cost  borne  by Buyer or its  Subsidiaries  by  reason  of such  act,  omission,
occurrence,expense  or  liability  is greater  than  US $300,000;  and  provided
further that for purposes of Section 6.2(A) of this Agreement no act,  omission,
occurrence,  expense  or  liability  shall be  deemed  to be or result in such a
material  adverse  effect on Buyer  unless the loss to or cost borne by Buyer or
its  Subsidiaries  by reason  of such  act,  omission,  occurrence,  expense  or
liability is greater than US $2,000,000.
<PAGE>
     (b) Other  Definitions.  The following defined terms shall have the meaning
set forth in the referenced section.

Defined Term                             Term Defined In Section

Accounting Principles ......................... 2.1(g)
Accumulated Funding Deficiency ................ 2.1(l)(iii)
Adjusted Cash Portion ......................... 1.6(e)
Adjusted Purchase Price ....................... 1.6(e)
Agreement ..................................... Introductory Paragraph
Anti-Monopoly Law ............................. 2.1(f)
Audited Balance Sheet ......................... 2.1(g)
Breakup Fee ................................... 4.4
Business ...................................... Background Paragraph A
Buyer Group ................................... Background Paragraph F
Buyer's Subsidiaries .......................... Background Paragraph E
Buyer's Subsidiary ............................ Background Paragraph E
Buyer Proxy Statement ......................... 3.1(p)
Buyer Stock ................................... 1.4(a)
Buyer's Filings ............................... 3.1(s)
Buyer's Knowledge ............................. 10.7
Buyer's 10-K .................................. 3.1(c)
Cash Portion .................................. 1.4(a)
CECS .......................................... 2.1(m)
CERCLA ........................................ 2.1(j)
Closing ....................................... 1.8
Closing Cash Payment .......................... 1.5(a)
Closing Date Balance Sheet .................... 1.6(c), 1.6(d)
Code .......................................... 2.1(h)
Combined Financial Statements ................. 2.1(g)
Common Stock .................................. 1.4(a)
Confidentiality Agreement ..................... 8.5
Consent ....................................... 2.1(e)
Customer ...................................... 2.1(x)
Damages ....................................... 8.1
Election Forms ................................ 9.2
Elections ..................................... 9.2
Employee Pension Benefit Plan ................. 2.1(l)(iii)
Environmental Permits ......................... 2.1(j)
Environmental Laws ............................ 2.1(j)
ERISA ......................................... 2.1(l)(i)
Escrow Agent .................................. 1.5(d)
Escrow Agreement .............................. 1.5(d)
Escrowed Shares ............................... 1.5(d)


<PAGE>

Defined Term                           Term Defined In Section

Estimated Cash Portion Adjustment ............. 1.4(b)
Estimated Cash Portion of
  the Purchase Price .......................... 1.4(b)
Exchange Act .................................. 3.1(s)
Foreign Sales Agreement ....................... 1.1(c)
GAAP .......................................... 2.1(g)
Government Authority .......................... 2.1(h)
Hazardous Substances .......................... 2.1(j)
HSR Act ....................................... 2.1(f)
Indemnification Notice ........................ 8.4(a)
Indemnified Party ............................. 8.4(a)
Indemnifying Party ............................ 8.4(a)
Intellectual Property ......................... 2.1(k)
IRS ........................................... 2.1(l)(i)
Licensed Products ............................. 7.7(b)
Licensed Names ................................ 7.7(b)
Multiemployer Plan ............................ 2.1(l)(ii)
Neutral Auditors .............................. 1.6(d)
Non-Assignable Contracts ...................... 10.11
Non-compete Agreement ......................... 6.1(f)
Note .......................................... 1.4(a)
Payroll Taxes ................................. 2.1(h)
Person ........................................ 1.2(f)
Phase I Investigation ......................... 2.1(j)
Potential Acquiror ............................ 4.4
Preliminary Closing Date Balance Sheet ........ 1.6(a)
Pro-Forma Adjustments ......................... 1.6(e)
Prohibited Transaction ........................ 2.1(l)(ii)
Purchase Price ................................ 10.8
Purchase Price ................................ 1.4(a)
Purchased Assets .............................. Background Paragraph B
Purchased International Offices ............... 1.2(a)(ii)
Registration Rights Agreement ................. 7.8
Reportable Event .............................. 2.1(l)(iii)
Representations and Warranties
   Agreement .................................. 8.3(c)
Retained Names and Logos ...................... 7.7(a)
Return/Returns ................................ 2.1(h)
Scanning ...................................... Background Paragraph A
Securities Act ................................ 2.1(u)
Seller Subsidiary ............................. Background Paragraph A
Seller Group .................................. Background Paragraph E
Seller's Knowledge ............................ 10.7
Scanning's Benefit Plans ...................... 2.1(l)(i)
Seller Brokers ................................ 7.2
Scanning's Qualified Plans .................... 2.1(l)(iii)
Scanning's ERISA Affiliate .................... 2.1(l)(i)
Shares ........................................ Background Paragraph C
Spectra-Physics AB ............................ 1.5(a)
Subordinated Debt Commitment Letters .......... 3.1(q)

<PAGE>

Tax/Taxes ..................................... 2.1(h)
Third Party Claim ............................. 8.4(a)
Third Party Transaction ....................... 4.4
Transition Services Agreement ................. 6.1(g)
TxCom ......................................... Background Paragraph A
TxCom Agreement ............................... 1.1(d)
TxCom Guarantee ............................... 8.2(c)
TxCom Shares .................................. Background Paragraph D
Undisputed Amount ............................. 1.6(e)
US Assets ..................................... Background Paragraph B

     1.3 Pre-Closing Transfer of Certain Assets of Scanning;  Industrial Revenue
Bonds.

     (a) Prior to Closing,  Seller shall cause Scanning to dividend or otherwise
transfer  to  Seller or its  designees  all or  substantially  all cash and cash
equivalents  of  Scanning.  As of the  Closing,  all  intercompany  payables  or
receivables  between the Business,  on the one hand, and any affiliate of Seller
(other than Scanning or TxCom),  on the other hand,  shall be cancelled,  except
for  receivables  from  Spectra-Physics  Lasers,  Inc. to Scanning in respect of
sales of VLD/ASIC  drivers by Scanning to  Spectra-Physics  Lasers,  Inc. in the
ordinary course of business.

     (b)  Prior to  Closing,  Seller  will pay or call for  payment  on the next
available prepayment date all of the outstanding Industrial Revenue Bonds.

      1.4   Purchase Price.

     (a) The aggregate purchase price for (i) the non-compete covenant described
in Section 6.1(f), (ii) the Shares,  (iii) the TxCom Shares and TxCom Rights and
(iv) the Purchased  Assets shall consist of One-Hundred  Twenty Million  Dollars
(US $120,000,000)  (the "Cash Portion"),  977,135 fully paid and  non-assessable
shares (the "Buyer  Stock") of Buyer's  Common  Stock,  par value $.01 per share
("Common  Stock"),  and a promissory note of Buyer (the "Note") in the principal
amount  of  Five  Million  United  States  Dollars  (US  $5,000,000),  plus  the
assumption by Buyer (and/or the Buyer Subsidiaries) of the Assumed International
Liabilities  and the TxCom  Obligations  (such  consideration,  as  adjusted  as
provided herein,  is collectively  referred to herein as the "Purchase  Price").
The Cash  Portion  of the  Purchase  Price  shall be subject  to  adjustment  as
provided in Section 1.6 below, and an increase or a decrease in the Cash Portion
of the Purchase Price will result in a corresponding increase or decrease in the
Purchase Price.  The Note shall be dated the date of Closing and shall be on the
terms set forth on Exhibit D hereto.



<PAGE>

     (b) At least five days prior to the Closing  Date,  Seller will  deliver to
Buyer in writing  its good faith  estimate of the Cash  Portion of the  Purchase
Price  based  on  the  then  most  currently  available  financial   information
concerning the Business' working capital,  together with  documentation  setting
forth the basis for such  estimate  (such  estimate  of the Cash  Portion of the
Purchase Price being the "Estimated  Cash Portion of the Purchase Price" and 50%
of the amount by which the Estimated  Cash Portion of the Purchase Price exceeds
US $120,000,000 being the "Estimated Cash Portion Adjustment").

     1.5 Payment of Cash Portion;  Delivery of Buyer Stock and Note;  Assumption
of  Liabilities.  At the  Closing,  the Purchase  Price (prior to being  finally
adjusted pursuant to Section 1.6) shall be payable as follows:

     (a) Buyer shall  and/or  shall cause the Buyer  Subsidiaries  to (i) pay an
amount  (the  "Closing  Cash   Payment")  in  United  States  Dollars  equal  to
$120,000,000  plus the  Estimated  Cash  Portion  Adjustment  in cash or by wire
transfer of immediately available funds to a bank account or accounts designated
by  Seller  on behalf  of  itself,  the  Seller  Subsidiaries,  SP  Holding  and
Spectra-Physics  AB  ("Spectra-Physics  AB"), (ii), subject to the provisions of
Section 1.5(d) hereto,  deliver the Buyer Stock to Seller, free and clear of all
liens, claims, equities, options, calls, voting trusts, agreements,  commitments
and encumbrances  whatsoever other than  restrictions  arising under federal and
state  securities  laws and (iii)  execute and  deliver the Note to Seller.  The
Purchase Price shall be allocated as provided in Section 1.7.

     (b) The Buyer  Subsidiaries  will pursuant to the Foreign Sales  Agreements
assume and agree to pay,  perform,  satisfy or otherwise  discharge when due the
Assumed International Liabilities.

     (c)  Buyer  will (or will  cause  the  appropriate  Buyer  Subsidiary  to),
pursuant to the TxCom  Assignment  and  Assumption  Agreement,  assume the TxCom
Contracts  (including the TxCom Obligations) and agree to pay, perform,  satisfy
or otherwise discharge when due the TxCom Obligations.

     (d) Buyer shall  deposit  with Chase  Manhattan  Bank,  N.A.  (the  "Escrow
Agent")  the  number of shares of the Buyer  Stock  which  equals US  $3,000,000
divided by the closing price of the Common Stock on the NASDAQ  National  Market
System on the next to the last trading day prior to the Closing Date as reported
in the Wall Street Journal (the "Escrowed Shares").  The Escrowed Shares will be
held in escrow  as  security  for the  indemnification  obligation  set forth in
Article VIII in accordance  with the terms of an escrow  agreement  (the "Escrow
Agreement"), substantially in the form of Exhibit E hereto.

<PAGE>


      1.6   Purchase Price Adjustment.

     (a)  Within 60 days  after the  Closing,  Scanning  (acting  through  Roger
Tedford,  its Vice  President-Finance,  or his  successor as  designated by John
O'Brien,  the President of Scanning) shall cause to be prepared and concurrently
delivered to Seller and to Buyer a combined  balance sheet of the Business as of
the Closing Date (the "Preliminary Closing Date Balance Sheet"). The Preliminary
Closing  Date  Balance  Sheet  shall  be  prepared  using  the  same  accounting
principles,  practices  and  procedures as were used in the  preparation  of the
Audited  Balance Sheet (as defined in Section  2.1(g)),  applied on a consistent
basis (such accounting principles, practices and procedures so applied being the
"Accounting Principles").

     (b) During the preparation of the Preliminary Closing Date Balance Sheet by
Scanning and the period of any dispute  referred to below,  Buyer shall  provide
Seller and Seller's independent  accountants full access to the books,  records,
facilities  and  employees of the  Business;  provided,  however,  that any such
access  shall be allowed  only in such manner as not to  interfere  unreasonably
with the operation of the Business.  Neither Seller nor Buyer will engage in any
substantive  discussions with Scanning or its employees regarding preparation of
the Preliminary Closing Balance Sheet unless the other party is also represented
in such discussions.

     (c)  Either  Buyer or  Seller  may  dispute  the  amounts  set forth on the
Preliminary  Closing Date Balance Sheet, but only on the basis that such amounts
were not determined in accordance with the Accounting  Principles or with regard
to computational errors; provided,  however, that no dispute shall be considered
properly raised unless Buyer or Seller,  as the case may be, shall have notified
Scanning and the other party in writing of each disputed  item,  specifying  the
amount thereof in dispute and setting forth, in reasonable detail, the basis for
such dispute,  within 30 days of such party's receipt of the Preliminary Closing
Date Balance Sheet. Any items not properly  disputed by either party within such
30-day period shall be final,  binding and conclusive on the parties hereto.  If
neither Buyer nor Seller fails  properly to notify  Scanning and the other party
of any such  dispute  within such 30-day  period the  Preliminary  Closing  Date
Balance Sheet shall be deemed to be the "Closing Date Balance Sheet."

     (d) In the event of a dispute with respect to the Preliminary  Closing Date
Balance Sheet,  Buyer and Seller shall attempt to resolve their  differences and
any such  resolution  shall be final,  binding  and  conclusive  on the  parties
hereto.  If Buyer and  Seller  fail to reach a  resolution  with  respect to any
disputed item within 10 business days of a party's  written notice of dispute to
Scanning and the other party,  Buyer and Seller shall submit the items remaining
in dispute for  resolution to the  Portland,  Oregon office of KPMG Peat Marwick
LLP or, if such firm is unable to so act, by another internationally  recognized
accounting firm selected by the Portland, Oregon office of KPMG Peat Marwick LLP
(the "Neutral Auditors").  The Neutral Auditors shall be instructed to determine
and report to the parties  hereto upon such  remaining  disputed items within 30

<PAGE>

days after submission, and such report and determination shall be final, binding
and conclusive on the parties hereto. The Neutral Auditors'  determination shall
be based  solely on whether  the item in dispute has been  accounted  for on the
Preliminary  Closing  Date  Balance  Sheet in  accordance  with  the  Accounting
Principles.  The  fees  and  disbursements  of the  Neutral  Auditors  shall  be
allocated  between  Buyer and Seller in the same  proportion  that the aggregate
amount of such  remaining  disputed  items so submitted to the Neutral  Auditors
that is  unsuccessfully  disputed by each (as finally  determined by the Neutral
Auditors)  bears  to the  total  amount  of such  remaining  disputed  items  so
submitted. The Preliminary Closing Date Balance Sheet, as modified by resolution
by Seller  and Buyer or by the  Neutral  Auditors,  shall be the  "Closing  Date
Balance  Sheet." If  disagreements  arise with  respect to  individual  items of
inclusion and/or exclusion on the Preliminary Closing Balance Sheet, the parties
agree that the governing  principle will be that the Purchase  Price  adjustment
contemplated  by this section is intended to analyze the  economic  effects of a
change in  Shareholders'  equity from  December 31, 1995 to the Closing Date and
that such change can only be  appropriately  measured  when the Closing  Balance
Sheet and Audited Balance Sheet are prepared on a consistent basis.

     (e) Upon  determination of the Closing Date Balance Sheet, the Cash Portion
of the Purchase  Price shall be increased or  decreased,  as the case may be, by
the amount equal to the amount by which the Shareholder's  equity on the Closing
Date Balance Sheet, as adjusted to exclude  accounts  receivable  represented by
discounted notes, deferred tax assets, deferred tax liabilities and indebtedness
relating to the Industrial Revenues Bonds (such adjustments being the "Pro Forma
Adjustments")  is greater or less than the  Shareholder's  equity on the Audited
Balance Sheet, as adjusted for the Pro-Forma Adjustments and the removal of cash
and cash  equivalents  and the note  receivable,  provided  that such  amount is
greater  than  US $500,000.  In  the  event  such  amount  is not  greater  than
US $500,000,  no  adjustment  shall be made to the Cash  Portion of the Purchase
Price  pursuant to this  Section 1.6.  For the  avoidance of doubt,  the parties
agree that the  Closing  Date  Balance  Sheet  shall not  include  any  Excluded
International Liabilities,  Excluded International Assets or any federal, state,
foreign or local income Taxes against which Seller has agreed to indemnify Buyer
pursuant to Section 8.1 hereof.  If the Cash Portion of the Purchase  Price,  as
adjusted in accordance  with this Section (the "Adjusted Cash  Portion"),  is in
<PAGE>

excess of the Closing Cash  Payment,  Buyer shall pay Seller such excess,  or if
the Closing Cash Payment is in excess of the Adjusted Cash Portion, Seller shall
pay Buyer such excess.  In either case, such amount shall be payable to Buyer or
Seller,  as the case may be, in cash within five  business  days after the final
determination  of such  amount,  and shall bear  interest at a rate equal to the
rate of interest from time to time announced  publicly by CoreStates  Bank, N.A.
as its prime or base  rate  (calculated  on the basis of a 365-day  year for the
actual  number of days elapsed from the Closing Date until the date of payment).
The Buyer Group and the Seller  Group shall treat any such  interest as interest
in their  respective  Tax Returns.  Such  payment  shall be made by certified or
official bank check payable to the order of the Seller or the Buyer, as the case
may be, or by wire  transfer  to a bank  account or accounts  designated  by the
Seller or Buyer,  as the case may be. If (a) there is a dispute  with respect to
the  Preliminary  Closing Date Balance Sheet and (b) even if all disputed  items
were resolved in favor of a party,  that party would still be required to make a
payment (the "Undisputed  Amount") to the other party under this Section 1.6(e),
then  pending  resolution  of the  disputed  items,  such  party  will  pay  the
Undisputed Amount to the other party.

     1.7  Allocation of Purchase  Price.  The Purchase  Price shall be allocated
among the  non-compete  covenant  described in Section 6.1(f),  the Shares,  the
TxCom Shares and the TxCom Rights,  the US Assets and the  International  Assets
(by  country)  as set forth in Exhibit F. For  purposes of all Taxes (as defined
below), Buyer and Seller agree to  report the transactions  contemplated in this
Agreement in a manner  consistent with the final  allocation  under this Section
1.7,  and  agree  that  neither  of them  will  take any  position  inconsistent
therewith  for any Tax (as defined  below)  purposes,  unless  required to do so
pursuant to a "determination" within the meaning of section 1313 of the Code (as
defined below) or an analogous provision under state or local law.

     1.8 Closing.  The closing under this  Agreement (the  "Closing")  will take
place at 10:00 a.m.,  local time, on the later of (i) July 1, 1996 or (ii) three
business  days  after  all  conditions  contained  in this  Agreement  have been
satisfied or waived, at the offices of Boylan,  Brown,  Code,  Fowler,  Vigdor &
Wilson,  LLP, 2400 Chase  Square,  Rochester,  New York 14604,  or at such other
time,  location or date as the parties shall mutually  agree.  The date on which
the Closing  occurs is sometimes  referred to herein as the "Closing  Date." All
transactions at the Closing shall be deemed to take place  simultaneously at the
close of business on the Closing  Date,  and no  transaction  shall be deemed to
have been completed and no document or certificate  shall be deemed to have been
delivered until all transactions are completed and all documents are delivered.

<PAGE>

      1.9   Deliveries and Proceedings at Closing.  At the Closing:

     (a)  Deliveries by Seller.  Seller will deliver or cause to be delivered to
Buyer:

     (i)  a  certificate  or  certificates   representing   the  Shares,   which
certificate  shall be properly  endorsed  for  transfer by duly  executed  stock
powers,  executed  in  blank  or in  favor  of  Buyer  and  otherwise  in a form
acceptable for transfer on the books of Scanning;

     (ii) a certificate or  certificates  representing  the TxCom Shares,  which
certificate  shall be properly  endorsed for transfer by a duly  executed  share
transfer order,  executed in blank or in favor of Buyer (or a Buyer  Subsidiary)
and otherwise in a form acceptable for transfer on the books of TxCom;

     (iii) a patent assignment of the US Assets in form and substance reasonably
satisfactory to the parties hereto and their respective counsel duly executed by
Seller;

     (iv) Foreign  Sales  Agreements,  duly executed by the  appropriate  Seller
Subsidiaries;

     (v) the TxCom Agreement, duly executed by SP Holding;

     (vi) the  Registration  Rights  Agreement  as  provided  for in Section 7.8
hereto, duly executed by Seller; and

     (vii) the Escrow Agreement, duly executed by Seller.

     (b)  Deliveries  by Buyer.  Buyer will  deliver or cause to be delivered to
Seller:

     (i) the Closing Cash Payment;

     (ii) a  certificate  or  certificates  representing  the Buyer Stock,  duly
registered in the name of Seller or its designee;

     (iii) Foreign Sales  Agreements,  duly  executed by the  appropriate  Buyer
Subsidiaries;

     (iv) the TxCom Agreement, duly executed by Buyer (or a Buyer Subsidiary);

     (v) the  Registration  Rights  Agreement  as  provided  for in Section  7.8
hereto, duly executed by Buyer;

<PAGE>

     (vi) the Escrow Agreement, duly executed by Buyer; and

     (vii) the Note.

     (c) Other  Deliveries.  The closing  certificates,  opinions of counsel and
other  documents  required to be delivered  pursuant to this  Agreement  will be
exchanged.


                                  ARTICLE II

                   REPRESENTATIONS AND WARRANTIES OF SELLER

     2.1 Representations and Warranties  Pertaining to the Business.  Seller and
SP Holding represent and warrant to the Buyer Group that:

     (a) Organization and Qualification.  Each of Seller,  Scanning,  TxCom, the
Scanning  Subsidiaries  and  the  Seller  Subsidiaries  is  a  corporation  duly
organized,  validly  existing  and  in  good  standing  under  the  laws  of the
jurisdiction of its organization and each has all requisite  corporate power and
corporate authority to own, operate and lease its properties and to carry on its
business  as it is now  being  conducted.  Complete  and  correct  copies of the
Certificate of  Incorporation  and Bylaws of Scanning,  TxCom,  and the Scanning
Subsidiaries, as amended to date, have been made available to Buyer. Scanning is
duly qualified or registered as a foreign corporation to do business,  and is in
good  standing,  in each  jurisdiction  in which the character of the properties
owned,  operated  or leased by it or the nature of its  activities  is such that
such qualification is required by applicable law, except where the failure to so
qualify and be in good standing  would not,  individually  or in the  aggregate,
have a Material Adverse Effect. All jurisdictions where Scanning is qualified as
a foreign corporation are listed on Schedule 2.1(a) hereto.

     (b)  Capitalization.  The authorized  capital stock of Scanning consists of
100  shares of common  stock,  $.01 par value per  share,  and there is no other
capital  stock of  Scanning  authorized  for  issuance.  There are 100 shares of
Scanning common stock issued and outstanding,  all of which are owned by Seller,
and the Shares  constitute  the total issued and  outstanding  share  capital of
Scanning.  The  authorized  capital stock of TxCom  consists of 10,043 shares of
common stock,  with a par value of 100 French Francs per share,  and there is no
other capital stock of TxCom authorized for issuance. There are 10,043 shares of
TxCom  common  stock  issued  and  outstanding,  7235 of which  are  owned by SP
Holding.  All of the Shares and the TxCom Shares have been duly  authorized  and
validly issued,  are  fully paid, non-assessable,  and have not  been issued and
are not owned or held in  violation  of any  preemptive  right of  shareholders.
Seller and SP Holding,  respectively,  owns the Shares and the TxCom  Shares and
will  transfer  the  Shares  and the  TxCom  Shares  to Buyer  pursuant  to this
<PAGE>


Agreement free and clear of all liens, claims, equities,  options, calls, voting
trusts,  agreements,  commitments  and  encumbrances  whatsoever.  No  shares of
capital stock of Scanning or TxCom are reserved for  issuance,  and there are no
options,  warrants,  convertible  instruments  or other  rights,  agreements  or
commitments,  contingent or otherwise,  obligating Scanning or TxCom to issue or
sell  shares  of  capital  stock.  Scanning  owns  870,923  shares  of  Series B
Convertible  Preferred Stock of Catalina  Electronic  Clearing Systems,  Inc., a
Delaware corporation  ("CECS").   Complete and correct copies of the Certificate
of  Incorporation  and  Bylaws  of CECS,  as  amended  to date,  have  been made
available to Buyer. 

     (c)  Subsidiaries.  Scanning  has no  Subsidiaries  other than  SpectraScan
(AUST) Pty Ltd.,  an  Australian  corporation,  and  SpectraScan  Europe Ltd., a
United Kingdom corporation.  Each of SpectraScan (AUST) Pty Ltd. and SpectraScan
Europe Ltd. is an inactive  corporation  incorporated in February 1996 which has
never held any assets,  conducted  any  operations  or incurred any  liabilities
which  have not  been  fully  discharged  (other  than  liabilities  related  to
incorporation or the registration of branch offices).

     (d) Authority. Seller and SP Holding have the corporate power and corporate
authority to execute,  deliver and perform this Agreement, and to consummate the
transactions  contemplated  hereby.  This  Agreement  has been duly and  validly
authorized by all necessary corporate, and, if necessary, shareholder, action on
the part of Seller and SP  Holding.  This  Agreement  has been duly and  validly
executed and delivered by Seller and SP Holding and,  assuming due execution and
delivery by Buyer and SP Holding, constitutes, the valid and binding obligations
of  Seller  and  SP  Holding,  enforceable  against  Seller  and SP  Holding  in
accordance  with  its  terms,  subject  to  applicable  bankruptcy,  insolvency,
fraudulent conveyance, reorganization, moratorium or other similar laws relating
to  creditors'  rights  generally  and subject to general  principles  of equity
(regardless  of  whether  enforcement  is  sought in a  proceeding  at law or in
equity).  Each  Seller  Subsidiary  and SP Holding has the  corporate  power and
corporate authority to execute,  deliver and perform the Foreign Sales Agreement
and the  TxCom  Agreement,  respectively,  to  which  it will be a party  and to
consummate the transactions  contemplated  thereby. Each Foreign Sales Agreement
and the TxCom  Agreement have been duly and validly  authorized by all necessary
corporate and, if necessary,  shareholder  action on the part of the appropriate
Seller Subsidiary and SP Holding,  respectively.   Each Foreign Sales  Agreement
and the TxCom  Agreement,  when duly and  validly  executed  by the  appropriate

<PAGE>

Seller  Subsidiary  and SP Holding,  respectively,  assuming due  execution  and
delivery by Buyer (or the  counterpart  Buyer  Subsidiary),  will constitute the
valid and binding  obligations  of each such Seller  Subsidiary  and SP Holding,
respectively,  enforceable  against the  appropriate  Seller  Subsidiary  and SP
Holding,  respectively,  in  accordance  with its terms,  subject to  applicable
bankruptcy,  insolvency,  fraudulent conveyance,  reorganization,  moratorium or
other  similar  laws  relating to  creditors'  rights  generally  and subject to
general principles of equity  (regardless of whether  enforcement is sought in a
proceeding at law or in equity).

     (e) Non-Contravention.  Except as  set forth on Schedule 2.1(e)  hereto and
subject to the Seller Group's  obtaining any consent,  approval,  authorization,
waiver or  exemption  (collectively,  a  "Consent")  required  pursuant to or in
connection  with this  Agreement,  the  execution,  delivery and  performance by
Seller and SP Holding of this Agreement and the consummation by the Seller Group
of the  transactions  contemplated  hereby will not (i) violate any provision of
law,  rule or  regulation  to which  Scanning,  TxCom  or,  with  regard  to the
Business,  any of the Seller  Subsidiaries is subject,  which  violation  would,
individually or in the aggregate,  have a Material Adverse Effect, (ii) conflict
or violate  any  order,  judgment,  injunction,  award or decree  applicable  to
Scanning, TxCom or, with regard to the Business, any of the Seller Subsidiaries,
(iii) violate or conflict with the Certificate of Incorporation, Bylaws or other
similar governing  documents of any member of the Seller Group, (iv constitute a
default  under  or  give  rise  to  a  right  of  termination,  cancellation  or
acceleration  of any right or obligation  of Scanning,  TxCom or, with regard to
the  Business,  any  of the  Seller  Subsidiaries  under  any  provision  of any
agreement,  contract or other instrument  binding upon Scanning,  TxCom or, with
regard  to the  Business,  any  of  the  Seller  Subsidiaries  or  any  license,
franchise,  permit or other similar  authorization  held by Scanning,  TxCom or,
with  regard  to the  Business,  any of the  Seller  Subsidiaries  which  would,
individually or in the aggregate,  have a Material Adverse Effect, or (v) result
in the creation or imposition of any lien, encumbrance, charge or claim upon any
of the assets of Scanning, TxCom or any of the Purchased Assets.

     (f)  Governmental  Consents and Approvals.  Except as set forth on Schedule
2.1(f) hereto, the execution,  delivery and performance by Seller and SP Holding
of this Agreement and the  consummation  by the Seller Group of the  transaction
contemplated  hereby  does not  require  any  consent  from or  filing  with any
governmental  body,  agency or  official  except  for (i) the filing of a report
under the Hart-Scott-Rodino  Antitrust Improvements Act of 1976, as amended (the
"HSR Act") and the expiration of the applicable waiting period; (ii) any consent
or filing,  including filings under the  Anti-Monopoly  Law (the  "Anti-Monopoly
Law") to the Fair Trade Commission of Japan, that the Buyer Group is required to
<PAGE>

obtain or make; and (iii)  consents and filings which,  if not obtained or made,
will not individually or in the aggregate have a Material Adverse Effect or have
a material adverse effect on the ability of the parties hereto to consummate the
transactions contemplated hereby.

     (g) Combined Financial Statements.  Attached as Schedule 2.1(g) hereto are:
(i) combined balance sheets of the Business as of December 31, 1995 and 1994 and
(ii) a combined  statement of operations and cash flows of the Business for each
of the three  years in the period  ended  December  31,  1995 (such  statements,
including  the  notes  thereto,  are  collectively  referred  to  herein  as the
"Combined  Financial  Statements"  and such  December  31, 1995  balance  sheet,
including  the notes  there-to, is  referred to herein as the  "Audited  Balance
Sheet").  The  Combined  Financial  Statements  have been  audited  by Coopers &
Lybrand  L.L.P.,   independent  public   accountants.   The  Combined  Financial
Statements  present  fairly in all  material  respects  the  combined  financial
position  of the  Business at  December  31,  1995 and 1994,  and results of its
operations  and its cash  flows  for each of the three  years in the  three-year
period ended December 31, 1995, in conformity with generally accepted accounting
principles in the United States, consistently applied.

     (h) Taxes.  Each of Scanning and its  Subsidiaries and TxCom has (i) timely
filed,  or had timely  filed on its behalf,  all material  returns,  reports and
other  information  statements  ("Return" or "Returns")  required to be filed in
respect  of Taxes  (as  defined  below)  and (ii)  paid,  or has had paid on its
behalf, all Taxes shown to have become due pursuant to such Returns or for which
an assessment has been received,  except for any assessment  being  contested in
good faith which contested assessments, if any, are set forth on Schedule 2.1(h)
hereto.  Except as set forth on Schedule  2.1(h)  hereto,  (i)  Scanning and its
Subsidiaries  and TxCom are not parties to any tax sharing  agreements,  (ii) no
Tax Return is under  audit as of the date hereof by any  Governmental  Authority
(as hereinafter  defined) and (iii) Scanning and its Subsidiaries and TxCom have
not executed any waivers or consents  extending the statute of limitations  with
respect  to any  possible  or actual  audit or  assessment  by any  Governmental
Authority with regard to any income Tax Return or any other material Tax Return,
which waiver or consent remains outstanding as of the date hereof.  There are no
security  interests in favor of any Governmental  Authority on any of the assets
of any of Scanning and its Subsidiaries,  Seller  Subsidiaries  (with respect to
the Business),  and TxCom that arose in connection  with any failure (or alleged
failure) to pay any Tax. Except as disclosed on Schedule 2.1(h),  as of the date
hereof,  there is no pending or unresolved  dispute or claim  concerning any tax
liability of any of  Scanning and  its Subsidiaries and  TxCom either claimed or
raised by any  Governmental  Authority  in  writing.  None of  Scanning  and its
Subsidiaries and TxCom has made any payments, is obligated to make any payments,
<PAGE>

or is a party to any agreement that, under certain circumstances, could obligate
it to make any payments that will not be deductible  under  Section 280G  of the
Internal Revenue Code of 1986, as amended (the "Code"). None of Scanning and its
Subsidiaries  has been  a member of  an affiliated  group filing  a consolidated
federal  income tax return,  other than a group,  the common  parent of which is
Spectra-Physics  Holdings  USA,  Inc. For purposes of this  Agreement,  "Tax" or
"Taxes" shall mean all taxes,  assessments or other governmental  charges of any
kind  whatsoever  imposed  by the United  States or any state,  local or foreign
government or political  subdivision or taxing  authority  thereof or therein (a
"Governmental Authority"),  including,  without limitation, any income, profits,
capital gains,  franchise,  sales, use, value added,  gross receipts,  transfer,
excise, property, property transfer,  occupation, lease, capital stock, premium,
estimated customs, payroll,  withholding or social security taxes, including all
interest,  penalties  and additions to tax imposed with respect to such amounts.
For purposes of this Agreement, "Payroll Taxes" shall mean all Taxes required to
be paid by an employer with respect to an employee or required to be withheld by
an employer.

     (i) Properties. Scanning, SP Holding and, with respect to the Business, the
Seller  Subsidiaries,  have good and valid  title to all  their  properties  and
assets, real and personal, tangible and intangible (including those reflected on
the Audited  Balance  Sheet or  acquired by Scanning or the Seller  Subsidiaries
since the date of the Audited  Balance Sheet,  except property sold or otherwise
disposed of in the  ordinary  course of  business  since the date of the Audited
Balance Sheet), free and clear of all mortgages,  liens,  attachments,  pledges,
encumbrances or security  interests of any nature  whatsoever,  except (a) those
disclosed in the Audited Balance Sheet,  (b) any liens for current Taxes not yet
due  and  payable  or  which  may  thereafter  be  paid  without  penalty,   (c)
encumbrances described in Schedule 2.1(i) hereto, (d) zoning, building and other
similar  governmental  restrictions  and  liens  imposed  by  operation  of  law
(including without limitation  mechanics',  carriers',  workmen's,  repairmen's,
landlord's  or other  similar  liens  arising  from or incurred in the  ordinary
course  of  business  and  for  which  the  underlying   payments  are  not  yet
delinquent),  and  (e)  easements,  covenants,  rights-of-way or  other  similar
restrictions  and  imperfections  of title,  none of which items  referred to in
clauses (d) and (e) materially  impair the use, value or  marketability of title
of the  property to which they relate in the  Business  as  presently  conducted
<PAGE>

taken as a whole. The properties and assets of Seller, SP Holding and the Seller
Subsidiaries  to be acquired by the Buyer  Group at the Closing  constitute  all
properties and assets, except for the Excluded International Assets, required to
operate the Business in the same manner as it was operated prior to the Closing.
Set forth on Schedule 2.1(i) hereto is a list of all real estate owned or leased
by Scanning,  TxCom or,  exclusively  with respect to the  Business,  the Seller
Subsidiaries.

     (j) Environmental Matters. Except as set forth on Schedule 2.1(j) hereto or
identified in connection with the Phase I environmental  assessment performed by
Buyer (the "Phase I  Investigation"),  Scanning, TxCom, and, with respect to the
Business,  the Seller  Subsidiaries  have  obtained all  environmental  permits,
certificates,    licenses,    approvals,    registrations   and   authorizations
("Environmental  Permits")  which are required in  connection  with the Business
except for Environmental  Permits which if not obtained would not,  individually
or in the  aggregate,  have a Material  Adverse  Effect.  Set forth on  Schedule
2.1(j)  hereto is a schedule of all such  Environmental  Permits.  Except as set
forth on Schedule  2.1(j) hereto and except as identified in connection with the
Phase I  Investigation,  (i) Scanning,  TxCom and, with respect to the Business,
the Seller Subsidiaries have complied with such Environmental Permits except for
such possible violations which would not,  individually or in the aggregate have
a  Material  Adverse  Effect,  (ii)  Scanning,  TxCom and,  with  respect to the
Business,   the  Seller   Subsidiaries,   have  complied  with  the   applicable
environmental  statutes,  rules,  regulations,  ordinances  and  orders  of  any
governmental  entity with jurisdiction  over such matters,  as well as valid and
enforceable  judicial  and  administrative   rulings  and  regulations  relating
thereto, including but not limited to those relating to Hazardous Substances (as
hereinafter defined)  ("Environmental Laws") except for such possible violations
which  would not,  individually  or in the  aggregate,  have a Material  Adverse
Effect, and (iii) Scanning,  TxCom and, with respect to the Business, the Seller
Subsidiaries  have not received any written request for  information,  notice of
claim, demand or notification that it is or may be potentially  responsible with
respect to any  investigation or clean-up of any threatened or actual release of
any hazardous substance as defined in the Comprehensive  Environmental Response,
Compensation,  and  Liability  Act of 1980,  as amended  ("CERCLA") or hazardous
waste as defined in the Resource  Conservation  and  Recovery Act  (collectively
"Hazardous Substances"), except for such matters which have since been resolved.

     (k) Patents;  Trademarks  etc.  Set forth on Schedule  2.1(k) is a true and
correct list as of the date hereof of (i) all patents,  patent  applications and
registered   trademarks,   tradenames,   service   marks,   copyrights  and  all
applications  pending on said date for  trademark,  trade name,  service mark or
copyright  registrations  by (A)  Seller  or the  Seller  Subsidiaries  and used
primarily  in the conduct of the  Business or (B) Scanning or TxCom and (ii) all
material  licenses  granted by or to (A) Seller or the Seller  Subsidiaries  and
used  primarily  in the conduct of the  Business or (B)  Scanning or TxCom which
relate, in whole or in part, to any items in the categories mentioned in (i)
<PAGE>

above  (all  items  in (i) and  (ii)  hereinafter  collectively  referred  to as
"Intellectual  Property").  As of the date hereof, all relevant maintenance fees
with respect to the patents  included in the  Intellectual  Property  payable by
Scanning,  TxCom  or,  with  respect  to the  Business,  Seller  or  the  Seller
Subsidiaries have been paid and, to Seller's knowledge, none of the Intellectual
Property is subject to any interference, opposition or cancellation proceedings.
Except as set forth on Schedule 2.1(k) hereto,  to Seller's  knowledge,  neither
Scanning,  TxCom,  nor the  Seller  Subsidiaries  has,  since  January  1, 1990,
received a written claim or, since April 1, 1995,  received an oral claim,  from
any  person  (that  has not been  subsequently  resolved)  which  asserts,  with
specificity,  that  the  operations  of  the  Business  infringe  such  person's
intellectual  property  rights,  which claim relates to products of the Business
that  exist  or are in  development  and  have  expected  annual  sales  of over
US $5,000,000.

     (l) Domestic Employee Benefit Plans.

     (i) Set forth on the Schedule  2.1(l) hereto is a true and complete list of
each  material  "employee  benefit  plan" (as  defined  in  Section 3(3)  of the
Employee Retirement Income Security Act of 1974, as amended ("ERISA")), deferred
compensation,  incentive  compensation, excess benefit, supplemental retirement,
stock purchase,  stock option,  severance,  and other material  employee benefit
plan,  program or  arrangement  maintained,   contributed  to or  required to be
contributed  to by Scanning or any other  employer  that is, or was at any time,
together with Scanning,  treated as a "single employer" under Section 414 of the
Code,  (a  "Scanning's  ERISA  Affiliate"),  for the benefit of any employees of
Scanning  (collectively,  the "Scanning's  Benefit Plans").  A true and complete
copy  of  each  of  Scanning's   Benefit  Plans  (including  any  related  trust
agreements),  have  been  made  available  to  Buyer.  With  respect  to each of
Scanning's  Benefit  Plans  (to the  extent  applicable)  the  Seller  has  made
available to Buyer (i) the most recent summary plan  description,  (ii) the most
recent annual report (Form 5500) filed with the Internal Revenue Service ("IRS")
and (iii) the most recent determination letter issued by the IRS.

     (ii) Each of  Scanning's  Benefit  Plans has at all times been  maintained,
operated and  administered  in compliance with its terms and with all applicable
laws,  except where noncompliance would  not have a Material  Adverse  Effect on
the Business. No "prohibited  transaction" (within the meaning of Section 406 of
ERISA  or  Section 4975  of  the  Code)  has  occurred  with  respect  to any of
Scanning's  Benefit  Plans.  At no  time  for  which  any  relevant  statute  of
limitations  remain open have  Scanning or any of  Scanning's  ERISA  Affiliates
incurred  any  liability  under  Title I or Title IV of  ERISA  (other  than for
payment of premiums to the Pension Benefit Guaranty  Corporation  ("PBGC")) with
<PAGE>

respect to  Scanning's  Benefit  Plans.  Neither  Scanning nor any of Scanning's
ERISA Affiliates has ever participated in nor had an obligation to contribute to
any "multiemployer plan" (as defined in Sections 3(37) and 4001(a)(3) of ERISA).

     (iii)  Each of  Scanning's  Benefit  Plans  which is an  "employee  pension
benefit  plan"  (as  defined  in  Section 3(2)  of  ERISA)  is  qualified  under
Section 401(a)  of the  Code  ("Scanning's  Qualified  Plans")  and  each  trust
maintained  in connection  with such a plan is exempt from federal  income taxes
under  Section 501 of the Code.  There is no  "accumulated  funding  deficiency"
(within the meaning of  Section 302(a)  of ERISA or  Section 412(a) of the Code)
with respect to any of Scanning's  Qualified Plans whether or not waived.  There
is no reasonable basis, including without limitation, any "reportable event" (as
defined  in  Section 4043  of  ERISA)  that  would  constitute  grounds  for the
termination of any of Scanning's  Qualified Plans by the PBGC or the appointment
of a trustee or administrator under Title IV of ERISA.

     (iv)  There  are  no  pending  investigations  by any  governmental  agency
involving  Scanning's  Benefit  Plans,  no  termination   proceedings  involving
Scanning's  Benefit Plans, and to Seller's  knowledge,  no threatened or pending
claims  (except  for claims for  benefits  payable  in the normal  operation  of
Scanning's Benefit Plans) or suits against any of Scanning's Benefit Plans.

     (v) Except as set forth on the Schedule  2.1(l) hereto,  neither Seller nor
any of  its  ERISA  Affiliates  contributes to, or  ever  has been  required  to
contribute  to any  employee  benefit  plan  providing  medical,  health or life
insurance  or other  welfare  type  benefits  for  current or future  retired or
terminated  employees,  their  spouses,  or  their  dependents  (other  than  in
accordance   with  Part  6  of   Subtitle  B  of  Title  I  of  ERISA  and  Code
Section 4980(B)).

     (m) Foreign  Employee  Benefit Plans.  Each material  pension,  retirement,
savings, profit sharing, deferred compensation,  incentive compensation,  excess
benefit,  supplemental retirement,  stock purchase, stock option, severance, and
other  material  employee  benefit  plan,  program  or  arrangement  maintained,
contributed  to or  required  to  be  contributed  to by  TxCom  or  the  Seller
Subsidiaries for or on behalf of any Foreign Business Employee (each, a "Foreign
Plan") has been  maintained,  operated and  administered  in  compliance  in all
material respects with its terms and with all applicable laws.

     (n)  Contracts.  Set  forth  on  Schedule  2.1(n)  hereto  is a list of the
following contracts,  agreements,  arrangements,  leases, permits,  licenses and
commitments  (except for purchase contracts and orders for inventory or supplies
made in the  ordinary  course of  business)  in  existence on the date hereof to
which  Scanning,  TxCom and,  with  respect to the  Business,  any of the Seller
Subsidiaries is a party, or by which any of them is bound:
<PAGE>

     (i) any contract not made in the ordinary  course of business  which by its
terms has an aggregate future liability in excess of US $300,000 or which is not
terminable on 180 days notice or less without penalty or premium;

     (ii) all real property lease agreements;

     (iii) joint venture agreements;

     (iv)  all  employment  or  consulting  agreements  with  employees  of,  or
consultants to, the Business, which may not be terminated without penalty within
thirty  days after the  Closing  (other  than oral  employment  agreements  with
employees  terminable at will without penalty,  subject to the Business's normal
severance policies and applicable law);

     (v) union or other collective bargaining agreements;

     (vi) each agreement of Scanning and TxCom, and each agreement of the Seller
Subsidiaries that will be assumed by the Buyer Group pursuant to this Agreement,
containing any covenant restricting the freedom of Scanning, TxCom or the Seller
Subsidiaries,  as the  case may be,  to  compete  in the  current  or a  related
business of the Business; and

     (vii) each agreement relating to the incurrence or guaranty of indebtedness
for borrowed money.

     A correct and complete copy of each such  contract  listed on such Schedule
has been delivered to Buyer.

     All contracts to which  Scanning,  TxCom and, with respect to the Business,
any of the Seller Subsidiaries is a party, or by which any of them is bound, are
legal, valid,  binding and enforceable and in full force and effect and there is
not under any such contract any existing  breach,  default,  event of default or
event which,  with the giving of notice or the passage of time,  or both,  would
constitute a breach,  default or event of default thereunder by Scanning,  TxCom
or, with respect to the Business, any of the Seller Subsidiaries, or to Seller's
knowledge, the other party or parties thereto, except for any such failure to be
in full force or any such breach,  default or event of default  which would not,
individually or in the aggregate, have a Material Adverse Effect.
<PAGE>

     (o) No Changes. Except as set forth on Schedule 2.1(o) hereto and except as
contemplated  by this  Agreement,  since the date of the Audited  Balance Sheet,
Scanning,  TxCom and the Seller  Subsidiaries have conducted the Business in the
ordinary  course.  Except as set forth on Schedule  2.1(o)  hereto and except as
contemplated  by this  Agreement,  since the date of the Audited  Balance  Sheet
there has not been:

     (i) any change in the Business which has had a Material Adverse Effect;

     (ii) any  declaration,  setting aside or payment of any dividend,  or other
distribution, in respect of Scanning's or TxCom's capital stock or any direct or
indirect redemption, purchase or other acquisition of such stock;

     (iii) any split,  combination or  reclassification  of outstanding  capital
stock of Scanning or TxCom, or any issuance or the authorization of any issuance
of any other  securities in respect of, in lieu of or in substitution for shares
of Scanning's or TxCom's capital stock;

     (iv) any issuance by Scanning or TxCom, or commitment of them to issue, any
shares of their capital stock or securities convertible into or exchangeable for
shares of their capital stock;

     (v) any  issuance  or sale by  Scanning  or  TxCom  of any  bonds  or other
corporate debt securities,  or any partial or complete  formation,  acquisition,
disposition or liquidation of Scanning or TxCom;

     (vi) any sale,  assignment,  lease,  transfer or other  disposition  of any
asset or shares  of  capital  stock of  Scanning  or TxCom,  or any asset of the
Seller  Subsidiaries  used  primarily  in the  Business,  except in the ordinary
course of business;

     (vii) any amendment,  termination or waiver of any material right belonging
to Scanning or TxCom, or, with respect to the Business, the Seller Subsidiaries,
except in the ordinary course of business;

     (viii) any increase in the  compensation  or benefits  payable or to become
payable by either of Scanning or TxCom,  to any of its  officers or employees or
by the  Seller  Subsidiaries  to  the  Foreign  Business  Employees  except  for
increases in the ordinary course of business; or

     (ix) any  agreement  by Scanning or TxCom or any Seller  Subsidiary  (other
than  the  transactions  contemplated  by  this  Agreement)  to do  any  of  the
foregoing.

                                    
<PAGE>


     (p)  Litigation  or  Proceedings.  Except as set forth in  Schedule  2.1(p)
hereto and  except for  worker's  compensation  or Bureau of Labor and  Industry
claims  or cases  arising  in the  ordinary  course  of  business,  to  Seller's
knowledge,  there are (i) no  actions,  suits,  investigations,  or  proceedings
pending against Scanning or TxCom, or, with respect to the Business,  the Seller
Subsidiaries,  at law or in  equity,  by or  before  any  court or  governmental
department,   agency   or   instrumentality   and   (ii)  no   actions,   suits,
investigations,  or proceedings  threatened  against Scanning or TxCom, or, with
respect to the Business,  the Seller  Subsidiaries,  at law or in equity,  by or
before any court or governmental  department,  agency or instrumentality,  as to
which such threatened actions,  suits,  investigations or proceedings there is a
reasonable  likelihood  of an  adverse  determination  and which,  if  adversely
determined,  would  individually  or in the  aggregate  have a Material  Adverse
Effect. There are no orders, rulings, decrees, writs, injunctions,  judgments or
stipulations to which Scanning or TxCom,  or, with respect to the Business,  any
Seller Subsidiary, is a party by or with any court, arbitrator or administrative
agency, other than orders or stipulations entered into in the ordinary course of
business in connection with litigation  proceedings and settlement thereof which
do not require payment by Scanning, TxCom or any Seller Subsidiary, individually
or in the aggregate after payment, of any amount greater than US $300,000.

     (q)  Compliance  with Laws.  Except with respect to  Environmental  Permits
which are the subject of Section 2.1(j)  hereto, each of Scanning and TxCom, and
with  respect  to  the  Business,   the  Seller   Subsidiaries,   possesses  all
governmental  licenses,  permits  and  authorizations  necessary  for the lawful
conduct of its respective businesses, except for any failure to possess any such
license,  permit  and  authorization  which  would not,  individually  or in the
aggregate,  have a Material Adverse Effect. Except with respect to Environmental
Laws which are the subject of  Section 2.1(j),  Scanning  and TxCom,  and,  with
respect to the Business,  the Seller  Subsidiaries  are in  compliance  with all
applicable laws, ordinances and regulations of federal, state, local and foreign
authorities,  except  where  noncompliance  would  not,  individually  or in the
aggregate, have a Material Adverse Effect. To Seller's knowledge,  except as set
forth on Schedule  2.1(j),  neither  Scanning,  TxCom,  nor, with respect to the
Business,  the Seller  Subsidiaries  has received  written  notice or has actual
knowledge of any action, suit,  proceeding,  investigation,  charge,  complaint,
claim or demand that has been filed or  commenced  against  Scanning,  TxCom or,
with respect to the Business,  the Seller  Subsidiaries  with respect to (i) any
alleged  violation of any law,  ordinance or regulation  of any federal,  state,
local or foreign authority or (ii) any alleged failure to have a license, permit
or  authorization  required  in  connection  with the  Business,  except for any
alleged  violation or alleged  failure which would not,  individually  or in the
aggregate, have a Material Adverse Effect.

                                       
<PAGE>

     (r) Labor  Matters.  There has been no employee  strike or other  organized
employee work  stoppage by the  employees of the Business  during the past three
(3) years  and, to Seller's  knowledge,  no such strike or stoppage is currently
threatened.

     (s) Insurance  Coverage.  Set forth on Schedule  2.1(s) hereto is a list of
all policies of insurance currently held by, or maintained on behalf of Scanning
in effect for policy periods  beginning on or after January 1, 1995,  indicating
for each policy the carrier, the insured, the type of insurance,  the amounts of
coverage and the expiration date.  Except as set forth on Schedule  2.1(s),  all
such policies are in full force and effect and Scanning,  TxCom or, with respect
to the Business,  any Seller  Subsidiary  has not received any written notice of
cancellation, material amendment or material dispute as to coverage with respect
to any such policies, which dispute relates to the Business.

     (t)  Certain   Transactions   with  Affiliates.   Except  for  arrangements
contemplated  by or  disclosed  in this  Agreement  or as set forth on  Schedule
2.1(t)  hereto,  there  are  no  transactions  of a  continuing  nature  between
Scanning,  TxCom or, with respect to the Business, the Selling Subsidiaries,  on
the one hand, and any of their respective  affiliates,  on the other hand, which
are not  subject to  cancellation  without  liability  or penalty and which will
continue beyond the Closing Date.

     (u)  Securities  Act. The Buyer Stock and the Note being acquired by Seller
pursuant to this Agreement are being acquired for investment only and not with a
view to any public  distribution  thereof in violation of the  Securities Act of
1933, as amended (the "Securities Act").

     (v) Banks.  The name of each bank in which  Scanning has an account or safe
deposit  box,  the name and  number of such  account or box and the names of all
persons authorized to draw thereon or who have access thereto,  with the amounts
they are authorized to draw are disclosed on Schedule 2.1(v).

     (w) Powers of Attorney. The names of all persons, if any, holding powers of
attorney from  Scanning,  other than powers of attorney  granted in the ordinary
course of business by Scanning to its  attorneys,  accountants  or other agents,
are disclosed on Schedule 2.1(w).

     (x) Significant Customers. To Seller's knowledge, as of the date hereof, no
Person who was one of the  Business's  top ten customers in 1995 (as measured by
1995 sales figures) (a "Customer")  has informed  Scanning  orally or in writing
that such  Customer  will cease to do  business  with or  materially  reduce the
amount of business it is currently  doing with the Business as a direct  result,
in either case, of the  acquisition  of the Business by Buyer  pursuant  hereto;
provided,  however,  that nothing herein shall constitute a representation  that
any Customer will continue its relationship with the Business.

                                       
<PAGE>


     (y) Severance Benefits. Except as set forth in Schedule 2.1(v) hereto, none
of Scanning,  TxCom or, with respect to the Business,  the Seller  Subsidiaries,
shall be  obligated  to make any  severance  or other  payment  or  provide  any
employee  benefits  to any  director,  officer  or  employee  as a result of the
consummation of the transactions  contemplated  hereby,  except, with respect to
Foreign Business Employees, as required by law.

     (z) Net Worth. As of December 31, 1995, the shareholder's  equity of Seller
was in excess of US $200,000,000.

     2.2 Excluded International Assets, Etc.  Notwithstanding anything contained
herein to the contrary,  the Seller Group makes no  representation,  warranty or
covenant  of any kind with  respect to any  Excluded  International  Asset,  the
assets  referred to in Section 1.3 of this Agreement or any matter  constituting
an Excluded  International  Liability or against which Buyer is  indemnified  by
Seller pursuant to Section 8.1 hereto.


                                   ARTICLE III

                     REPRESENTATIONS AND WARRANTIES OF BUYER

     3.1  Representations  and Warranties of Buyer.  Buyer hereby represents and
warrants to the Seller Group that:

     (a) Organization and Qualification. Buyer and each of its Subsidiaries is a
corporation duly organized, validly existing and in good standing under the laws
of the  jurisdiction of its  organization  and each has all requisite  corporate
power and corporate  authority to own,  operate and lease its  properties and to
carry on its business as it is now being conducted.  Complete and correct copies
of the  Certificate of  Incorporation  and Bylaws of Buyer,  as amended to date,
have been made  available to Seller.  Buyer is duly qualified or registered as a
foreign  corporation  to  do  business,   and  is  in  good  standing,  in  each
jurisdiction in which the character of the properties owned,  operated or leased
by it or the  nature  of its  activities  is such  that  such  qualification  is
required by  applicable  law,  except  where the failure to so qualify and be in
good  standing  would not,  individually  or in the  aggregate,  have a Material
Adverse Effect on Buyer.



                                      
<PAGE>


     (b)  Capitalization.  The  authorized  capital  stock of Buyer  consists of
40,000,000  shares of common stock, $.01 par value per share, of which 9,969,185
shares of common stock are issued and outstanding, 38,500 shares of common stock
are held in treasury  and  4,016,149  shares of common  stock are  reserved  for
issuance, and 10,000,000 shares of preferred stock, $.01 par value per share, of
which none are issued and  outstanding.  All such  outstanding  shares of common
stock  have been duly  authorized  and  validly  issued  and are fully  paid and
non-assessable.  Options to purchase 2,440,203 shares of common stock are issued
and  outstanding.  No other  shares of capital  stock of Buyer are  reserved for
issuance, and there are no other options,  warrants,  convertible instruments or
other rights,  agreements or  commitments,  contingent or otherwise,  obligating
Buyer to issue or sell shares of capital stock, except that at the Closing Buyer
expects to issue a warrant to purchase  975,000  shares of Common Stock of Buyer
in  connection  with  the  subordinated  debt  financing   referred  to  in  the
Subordinated Debt Commitment Letters referred to in Section 3.1(q).

     (c) Subsidiaries.  Except as disclosed on the Form 10-K for the fiscal year
ended December 31, 1995 (including any exhibits thereto) filed by Buyer with the
Securities  and  Exchange   Commission  (the  "Buyer's  10-K"),   Buyer  has  no
Subsidiaries  other than (a) any Subsidiaries  which Buyer creates to effect the
transactions  contemplated  hereby  and  (b)  PSC  Asia  Pacific  Pty  Ltd.,  an
Australian corporation incorporated on April 4, 1996.

     (d)  Authority.  Buyer has the corporate  power and corporate  authority to
execute,  deliver and perform this Agreement, and to consummate the transactions
contemplated  hereby. The execution,  delivery and performance of this Agreement
has been  duly and  validly  authorized  by all  necessary  corporate,  and,  if
necessary, shareholder action on the part of Buyer. This Agreement has been duly
and validly  executed and  delivered by Buyer and,  assuming due  execution  and
delivery  by Seller  constitutes,  the valid and binding  obligations  of Buyer,
enforceable  against Buyer in accordance with its respective  terms,  subject to
applicable  bankruptcy,   insolvency,  fraudulent  conveyance,   reorganization,
moratorium or other similar laws  relating to  creditors'  rights  generally and
subject to general  principles of equity  (regardless of whether  enforcement is
sought in a proceeding at law or in equity). Buyer and each Buyer Subsidiary has
the corporate power and corporate authority to execute,  deliver and perform the
Foreign Sales  Agreement  and/or the TxCom Agreement to which it will be a party
and to consummate  the  transactions  contemplated  thereby.  Each Foreign Sales
Agreement and the TxCom  Agreement  has been duly and validly  authorized by all
necessary  corporate and, if necessary,  shareholder action on the part of Buyer
and the respective  Buyer  Subsidiary.  Each Foreign Sales Agreement  and/or the
TxCom Agreement when duly  and validly executed by Buyer and/or  the respective 


<PAGE>

Buyer  Subsidiary,  and assuming due execution  and delivery by the  counterpart
Seller  Subsidiary or SP Holding,  respectively,  will  constitute the valid and
binding  obligations  of Buyer  and/or each such Buyer  Subsidiary,  enforceable
against Buyer and/or the  respective  Buyer  Subsidiary  in accordance  with its
terms,  subject to applicable  bankruptcy,  insolvency,  fraudulent  conveyance,
reorganization,  moratorium or other similar laws relating to creditors'  rights
generally  and subject to general  principles of equity  (regardless  of whether
enforcement is sought in a proceeding at law or in equity).

     (e)  Non-Contravention.   Except  as  described  on Schedule  3.1(e),   the
execution,  delivery  and  performance  by  Buyer  of  this  Agreement,  and the
consummation by the Buyer Group of the transactions contemplated hereby will not
(i) violate any provision of law,  rule or  regulation  to which the Buyer Group
is subject,  which violation  would,  individually  or in the aggregate,  have a
Material Adverse Effect on Buyer, (ii) conflict or violate any order,  judgment,
injunction,  award or decree applicable to any member of the Buyer Group,  which
violation or conflict would,  individually or in the aggregate,  have a Material
Adverse  Effect on Buyer,  (iii)  violate or conflict  with the  Certificate  of
Incorporation,  Bylaws or other similar governing documents of any member of the
Buyer  Group,  (iv) constitute  a  default  under  or give  rise  to a right  of
termination, cancellation or acceleration of any material right or obligation of
any member of the Buyer Group under any provision of any agreement,  contract or
other  instrument   binding  upon  the Buyer  Group or any  license,  franchise,
permit or other  similar  authorization  held by any member of the Buyer  Group,
which would,  individually  or in the aggregate, have  a Material Adverse Effect
on Buyer or (v) result in the creation or imposition  of any lien,  encumbrance,
charge or claim upon any of the assets of Buyer.

     (f)  Governmental  Consents and Approvals.  Except as set forth on Schedule
3.1(f)  hereto,  the execution,  delivery and  performance by the Buyer Group of
this Agreement and the  consummation  by Buyer of the  transaction  contemplated
hereby  does not require  consent  from or filing  with any  governmental  body,
agency or official  except for (i) the filing of a report  under the HSR Act and
the expiration of the applicable waiting period, (ii) any consent, or filing, if
any,  that the Seller  Group is  required to obtain or make,  (iii)  filing of a
report under the  Anti-Monopoly  Law with the Fair Trade Commission of Japan and
the expiration of the applicable  waiting period and (iv) consents,  and filings
which, if not obtained or made, will not individually or in the aggregate have a
Material  Adverse  Effect  on Buyer or the  ability  of the  parties  hereto  to
consummate the transactions contemplated hereby.
<PAGE>

     (g)  Financial  Statements.  Filed  together  with Buyer's 10-K are (i) the
consolidated  balance  sheets of Buyer and its  Subsidiaries  as of December 31,
1995 and 1994 and (ii) the related consolidated statement of operations and cash
flows for each of the three years in the period  ended  December  31, 1995 (such
statements,  including the notes thereto, are collectively referred to herein as
the "Buyer  Financial  Statements.")  The Buyer  Financial  Statements have been
audited by Arthur  Andersen,  LLP,  independent  public  accountants.  The Buyer
Financial  Statements  present fairly in all material  respects the consolidated
financial  position of Buyer and its Subsidiaries at December 31, 1995 and 1994,
and their  consolidated  results  of  operations  and cash flows for each of the
three years in the three-year period ended December 31, 1995, in conformity with
generally  accepted  accounting  principles in the United  States,  consistently
applied.

     (h) Taxes.  Buyer and each of its  Subsidiaries  has (i)  timely  filed all
material  Returns in respect of Taxes required to be filed and (ii) paid, or has
had paid on its  behalf,  all Taxes  shown to have  become due  pursuant to such
Returns or for which an assessment has been received,  except for any assessment
being contested in good faith.

     (i) Patents; Trademarks. To Buyer's knowledge, neither Buyer nor any of its
Subsidiaries  has,  since  January 1, 1994,  received a written  claim or, since
April 1,  1995,  received  an oral  claim,  from any  person  (that has not been
subsequently  resolved) which asserts, with specificity,  that the operations of
Buyer or its Subsidiaries  infringe such person's  intellectual property rights,
which claim relates to products of Buyer or its  Subsidiaries  that exist or are
in development and have expected annual sales of over US $5,000,000.

     (j) No Changes. Except as set forth on Schedule 3.1(j) hereto and except as
contemplated  by  this  Agreement,  since  December 31,   1995,  Buyer  and  its
Subsidiaries have conducted their respective  businesses in the ordinary course.
Except as contemplated by this Agreement, since December 31, 1995, there has not
been:

     (i) any change which has had a Material Adverse Effect on Buyer;

     (ii) any  declaration,  setting aside or payment of any dividend,  or other
distribution,  in respect of Buyer's or any of its  Subsidiaries'  capital stock
(except for dividends or distributions declared, set aside or paid to Buyer or a
wholly-owned  Subsidiary  of Buyer)  or  any  direct   or  indirect  redemption,
purchase or other acquisition of such stock;

     (iii) any split,  combination or  reclassification  of outstanding  capital
stock of Buyer or any issuance or the authorization of any issuance of any other
<PAGE>

securities in respect of, in lieu of or in substitution for shares of Buyer's or
any of its Subsidiaries' capital stock (except for the issuance or authorization
of issuance of such securities to Buyer or a wholly-owned Subsidiary of Buyer);

     (iv) any issuance by Buyer or its  Subsidiaries  of, or commitment of Buyer
or any  Subsidiary  to issue,  any shares of their  capital  stock or securities
convertible  into or exchangeable  for shares of their capital stock (except for
any such issuance to Buyer or to a wholly-owned Subsidiary of Buyer);

     (v) any issuance or sale by Buyer or any of its  Subsidiaries  of any bonds
or other  corporate  debt  securities,  or any  partial or  complete  formation,
acquisition, disposition or liquidation of Buyer or any Subsidiary of Buyer;

     (vi) any sale,  assignment,  lease,  transfer or other  disposition  of any
asset of Buyer or any  Subsidiary  of Buyer,  except in the  ordinary  course of
business;

     (vii) any amendment,  termination or waiver of any material right belonging
to Buyer or its Subsidiaries, except in the ordinary course of business; or

     (viii) any  agreement by Buyer or any of its  Subsidiaries  (other than the
transactions contemplated by this Agreement) to do any of the foregoing.

     (k)  Litigation  or  Proceedings.  Except as set forth in  Schedule  3.1(k)
hereto and  except for  worker's  compensation  or Bureau of Labor and  Industry
claims  or  cases  arising  in the  ordinary  course  of  business,  to  Buyer's
knowledge,  there are (i) no  actions,  suits,  investigations,  or  proceedings
pending against Buyer or its Subsidiaries, at law or in equity, by or before any
court or governmental department, agency or instrumentality and (ii) no actions,
suits,   investigations,   or  proceedings   threatened  against  Buyer  or  its
Subsidiaries,  at law or in  equity,  by or  before  any  court or  governmental
department,  agency or  instrumentality,  as to which such  threatened  actions,
suits,  investigations  or  proceedings  there is a reasonable  likelihood of an
adverse determination and which, if adversely determined,  would individually or
in the aggregate have a Material  Adverse Effect on Buyer.  There are no orders,
rulings, decrees, writs,  injunctions,  judgments or stipulations to which Buyer
or  its   Subsidiaries  is  a  party  by  or  with  any  court,   arbitrator  or
administrative  agency,  other than orders or  stipulations  entered into in the
ordinary  course of business  in  connection  with  litigation  proceedings  and
settlement  thereof which do not require  payment by Buyer or its  Subsidiaries,
individually or in the aggregate, of any amount greater than US $300,000.

<PAGE>

     (l)  Compliance  with  Laws.  Buyer  and  its  Subsidiaries  possesses  all
licenses,  permits and authorizations  necessary for the lawful conduct of their
respective  businesses,  except for any  failure to  possess  any such  license,
permit and authorization which would not, individually or in the aggregate, have
a Material Adverse Effect on Buyer. Buyer and its Subsidiaries are in compliance
with all applicable laws, ordinances  and regulations of federal,  state,  local
and foreign authorities,  except where non-compliance would not, individually or
in the aggregate, have a Material Adverse Effect on Buyer.

     (m) Buyer's Stock. Buyer has authorized,  and reserved, a sufficient number
of shares of Buyer's  Common  Stock to provide  for the  issuance of Buyer Stock
contemplated  by this  Agreement.  When the Buyer Stock is issued in  accordance
with  Section  1.5 of this  Agreement,  all shares of the Buyer Stock shall have
been duly authorized and validly issued, shall be fully paid and non-assessable,
shall not have been issued in violation of any preemptive  rights,  shall not be
subject  to  any  liens,  claims,  equities,   options,  calls,  voting  trusts,
agreements,   commitments  or  encumbrances   whatsoever  and  shall  have  been
authorized for inclusion on the NASDAQ  National  Market upon official notice of
issuance.

     (n)  Securities  Act. The Shares and the TxCom  Shares  being  purchased by
Buyer pursuant to this Agreement are being acquired for investment  only and not
with a view to any public  distribution  thereof in violation of the  Securities
Act.

     (o) SEC Filings. Since January 1, 1994, Buyer has timely filed all required
reports,  statements,  schedules and registration statements with the Securities
and Exchange  Commission  required to be filed by Buyer pursuant to the Exchange
Act of 1934,  as amended  (the  "Exchange  Act"),  all of which  complied in all
material  respects with all applicable  requirements  of the Exchange Act. Buyer
has delivered to Seller (i) Buyer's 10-K,  (ii) its proxy  statement dated March
25, 1996 relating to the April 30, 1996 meeting of its stockholders  (the "Buyer
Proxy  Statement")  and (iii) and any other reports,  statements,  schedules and
registration  statements  filed  by  Buyer  with  the  Securities  and  Exchange
Commission  since January 1, 1996 (the items  described in clauses (i), (ii) and
(iii) are  collectively  referred  to as  "Buyer's  Filings").  None of  Buyer's
Filings,  including without  limitation,  any financial  statements or schedules
included  therein,  at the time  filed,  contained  any untrue  statements  of a
material fact or omitted to state a material fact required to be stated  therein
or  necessary  in  order  to  make  the  statements  therein,  in  light  of the
circumstances under which they were made, not misleading.
<PAGE>

     (p) Certain Transactions; Contracts. There are (i) no transactions to which
Buyer is a party or  otherwise  related to Buyer that  would be  required  to be
disclosed pursuant to Item 404 of the Regulation S-K (other than as disclosed in
Buyer's Proxy Statement) and (ii) no agreements or other documents  entered into
by Buyer or otherwise  related to Buyer  required to be disclosed or filed as an
exhibit  pursuant to Item 601 of the  Regulation S-K (other than as disclosed in
or filed as an  exhibit to  Buyer's  10- K or  Buyer's  Form 10-Q for the fiscal
quarter ended  March 31,  1996 filed by Buyer with the  Securities  and Exchange
Commission).

     (q)  Financing.  Buyer has received  and  provided  Seller with a copy of a
fully-executed  commitment  letter dated May 17, 1996, from Fleet National Bank,
and fully-executed  subordinated  financing letters dated May 17, 1996 from each
of John Hancock  Mutual Life  Insurance  Company,  The Equitable  Life Assurance
Society of America and Lincoln  Investment  Management,  Inc. (the "Subordinated
Debt Commitment Letters").  All such letters have been accepted by Buyer and are
legal, valid, binding, enforceable and in full force and effect.

     (r) Note. Buyer has the corporate power and corporate authority to execute,
deliver and perform the Note.  The  execution,  delivery and  performance of the
Note by Buyer  has been duly  authorized  by all  necessary  corporate  and,  if
necessary,  shareholder action on the part of Buyer. When executed and delivered
by Buyer in accordance with this  Agreement,  the Note will constitute the valid
and binding  obligation of Buyer  enforceable  against it in accordance with its
terms,  subject to applicable  bankruptcy,  insolvency,  fraudulent  conveyance,
reorganization,  moratorium or other similar laws relating to creditors'  rights
generally  and subject to general  principles of equity  (regardless  of whether
enforcement is sought in a proceeding at law or in equity).

     3.2 Certain  Limitations on  Representations  and  Warranties.  Each of the
parties is a sophisticated  legal entity that was advised by experienced counsel
and, to the extent it deemed  necessary,  other advisors in connection with this
Agreement.  Accordingly,  each of the parties  hereby  acknowledges  that (i) no
party has relied or will rely in respect of this  Agreement or the  transactions
contemplated hereby upon any document or written or oral information  previously
furnished  to or  discovered  by it or  its  representatives,  other  than  this
Agreement  (including  the  Schedules  hereto) or such of the  foregoing  as are
delivered at the Closing,  (ii) there are no representations or warranties by or
on   behalf  of  any  party  hereto  or  any of its   respective  affiliates  or
representatives  other than those  expressly  set forth in this  Agreement,  and
(iii) the  parties'  respective  rights  and  obligations  with  respect to this
Agreement and the events giving rise thereto will be solely as set forth in this
Agreement.


<PAGE>

                                   ARTICLE IV

                          CERTAIN OBLIGATIONS OF SELLER

     4.1 Conduct of Business Pending Closing. From and after the date hereto and
prior to Closing,  and unless Buyer shall otherwise  consent or agree in writing
and except as  contemplated  by this  Agreement  or as disclosed on Schedule 4.1
hereto, Seller covenants and agrees that:

     (a) Scanning,  TxCom and the Seller  Subsidiaries will conduct the Business
in the ordinary course;

     (b) Scanning,  TxCom and the Seller  Subsidiaries will use their reasonable
best efforts to preserve the business  organization of the Business  intact,  to
maintain  the  services of their  present  key  employees  and to  preserve  the
goodwill of the suppliers,  customers and others having  business  dealings with
them.  If and as requested by Buyer,  Scanning,  TxCom and,  with respect to the
Business,   Seller   Subsidiaries   shall  make  reasonable   arrangements   for
representatives  of  Buyer  to meet  with  their  customers,  suppliers  and key
employees;

     (c)  Scanning,  TxCom  and,  with  respect  to  the  Business,  the  Seller
Subsidiaries shall not, and Seller will not permit Scanning,  SP Holding,  TxCom
or, with respect to the Business, the Seller Subsidiaries, to:

     (i)  amend  the  Certificate  of  Incorporation,  Bylaws  or other  similar
governing documents of Scanning or TxCom;

     (ii) issue any capital  stock of  Scanning or TxCom or rights,  warrants or
options  to  acquire  shares  of such  capital  stock  or issue  any  securities
convertible  into  such  shares  or  convertible  into  securities  in  turn  so
convertible,  or grant any  options,  warrants  or rights  to  acquire  any such
convertible securities;

     (iii) split, combine or reclassify outstanding capital stock of Scanning or
TxCom;

     (iv) enter into, assume or terminate any material contract or commitment or
amend,  terminate or waive any  material  right of the  Business,  except in the
ordinary course of business and consistent with past practice;

     (v)  sell,  transfer,  lease or  otherwise  dispose  of any  assets  of the
Business other than transfers, leases and dispositions in the ordinary course of
business;

     (vi)  incur,  create or assume any  mortgage,  pledge,  lien,  restriction,
encumbrance  or security  interest on any assets of the Business,  except in the
ordinary course of business;
<PAGE>

     (vii)  except  for cash  dividends,  declare or pay any  dividend  or other
distribution  in respect of any class of capital stock of Scanning or TxCom,  or
make  any  payment  to  redeem,  purchase  or  otherwise  acquire,  or call  for
redemption, any of such stock;

     (viii)  incur any  indebtedness  for  borrowed  money  with  respect to the
Business except to the extent discharged on or before the Closing Date;

     (ix) merge  or  consolidate  with  any  other  corporation or  acquire  any
stock, or, except in the ordinary course of business, any business,  property or
assets of any other person,  firm,  association,  corporation  or other business
organization; or

     (x) make or commit to make any  capital  expenditure,  capital  addition or
capital  improvement  with respect to the Business in excess of US $1,000,000 in
the aggregate.

     4.2 Access. Prior to the Closing,  Scanning, TxCom and, with respect to the
Business,  the Seller Subsidiaries,  shall give to Buyer and to Buyer's counsel,
accountants and other representatives reasonable access  during normal  business
hours to properties,  books and  records of the Business,  and shall  provide to
Buyer such  financial and operating  data and other  information  concerning the
Business as Buyer shall reasonably request.

     4.3 Exclusive Dealing. From and after the date hereof and until the earlier
of Closing under or termination of this Agreement, Seller and Scanning will not,
and will not authorize or permit any of their  officers,  directors or employees
or any of  their  affiliates  or  authorize  any of  their  investment  bankers,
attorneys, accountants or other representatives retained by them or any of their
affiliates  to,  directly or indirectly,  without the written  consent of Buyer,
solicit  or  knowingly  encourage  the  submission  of,  or  furnish  non-public
information  (with the  intent of  inducing  any  person to make an offer)  with
respect to the Business to, any person (a  "Potential  Acquiror")  in connection
with,  any  proposal  by a  Potential  Acquiror  for a merger or other  business
combination  with  the  Business  or the  acquisition  of a  substantial  equity
interest in the Business or a substantial  portion of the  Business's  assets (a
"Third Party Transaction")(other than sales in the ordinary course of business),
other than as contemplated by this Agreement.  Notwithstanding  the foregoing or
any other  provision  contained  herein to the contrary,  if Seller breaches the
covenant  contained in the previous  sentence and, as a result  thereof,  Seller
terminates its obligations  pursuant to this Agreement  (other than as permitted

<PAGE>

by  Section  6.3  hereof)  and  consummates  a Third  Party  Transaction  with a
Potential  Acquiror,  then  Seller  shall  promptly  pay to Buyer as  liquidated
damages for such breach and as compensation for such  termination  US $3,000,000
plus an amount not to exceed US $1,500,000  to reimburse  Buyer for (i) any non-
refundable  bank  commitment  fee(s) and  out-of-pocket  expenses  paid by Buyer
pursuant to the  commitment  letters  referred to in Section  3.1(q)  hereto and
(ii) any  non-refundable  fees and out- of-pocket  expenses of Hambrecht & Quist
Incorporated   which  Buyer  is  obligated   to  pay  or   otherwise   reimburse
(collectively,  the "Breakup  Fee"),  and such Breakup Fee shall be the sole and
exclusive remedy of the Buyer Group in connection with a breach of the foregoing
covenant and such termination.  In addition to Seller's termination rights under
Section 6.3, and notwithstanding any provision contained herein to the contrary,
Seller may also terminate its obligations under this Agreement  pursuant to this
Section upon payment to Buyer of the Breakup Fee. In any event,  upon payment of
the Breakup Fee to Buyer,  this Agreement  shall  terminate and be of no further
force or  effect,  and the  Seller  and its  affiliates  shall  have no  further
liability to Buyer or its affiliates  under or for any breach of this Agreement.
For  avoidance  of  doubt,  a Third  Party  Transaction  shall not  include  any
transaction the  consummation  of which does not impede the  consummation of the
transactions contemplated hereby.


                                    ARTICLE V

                          CERTAIN OBLIGATIONS OF BUYER

     5.1 Conduct of Business Pending Closing. From and after the date hereto and
prior to Closing,  and unless Seller shall otherwise consent or agree in writing
and except as contemplated by this Agreement, Buyer covenants and agrees that:

     (a) Buyer and its Subsidiaries will conduct their respective  businesses in
the ordinary course;

     (b) Buyer and its  Subsidiaries  will use their  reasonable best efforts to
preserve the business  organization of their respective  businesses  intact,  to
maintain  the  services of their  present  key  employees  and to  preserve  the
goodwill of the suppliers,  customers and others having  business  dealings with
them; and

     (c) Buyer and its Subsidiaries shall not:

     (i) amend  their  respective  Articles  of  Incorporation,  Bylaws or other
similar  governing  documents  so as to affect  adversely  Seller or  holders of
Buyer's Common Stock;

<PAGE>

     (ii)  issue  any  capital  stock of Buyer  or any of its  Subsidiaries,  or
rights, warrants or options to acquire shares of such capital stock or issue any
securities  convertible  into such shares or convertible into securities in turn
so  convertible,  or grant any  options,  warrants or rights to acquire any such
convertible  securities (except (a) for issuances of such securities to Buyer or
a wholly-owned Subsidiary of Buyer, (b) for the grant of employee stock options,
(c) in connection with the exercise of employee stock options  outstanding as of
the date hereof or (d) pursuant to employee  stock purchase plans existing as of
the date hereof);

     (iii) split, combine or reclassify the outstanding capital stock of Buyer;

     (iv)  declare or pay any dividend or other  distribution  in respect of any
class of Buyer's or any of its Subsidiaries' capital stock (except for dividends
or  distributions  declared  or paid to Buyer or a  wholly-owned  Subsidiary  of
Buyer), or make any payment to redeem,  purchase or otherwise  acquire,  or call
for redemption, any of such stock; and

     (v)  enter  into a  transaction  or take any  other  action  that  would be
required  to be  reported  under  Item 1, 2 or 3 of a Form  8-K  Current  Report
pursuant to Section 13 or 15(d) of the Exchange Act.

     5.2 Access. Prior to the Closing, Buyer and its Subsidiaries, shall give to
Seller and to Seller's counsel, accountants and other representatives reasonable
access during normal  business hours to  properties,  books and records of Buyer
and its  Subsidiaries,  and shall provide to Seller such financial and operating
data and other information concerning the business of Buyer and its Subsidiaries
as Seller shall reasonably request.


                                   ARTICLE VI

                       CONDITIONS TO CLOSING; TERMINATION

     6.1 Conditions Precedent to Obligations of the Buyer Group. The obligations
of the Buyer Group to proceed with the Closing under this  Agreement are subject
to the fulfillment  prior to or at Closing of the following  conditions (any one
or more of which may be waived in whole or in part by Buyer at Buyer's option):

     (a) Bringdown of Representations  and Warranties.  The  representations and
warranties of Seller  contained in this  Agreement  shall be true and correct on
and as of the  Closing  Date,  with the same  force and  effect  as though  such
representations and  warranties had been  made on, as of and  with  reference to
<PAGE>

such date  (other than such  representations  and  warranties  as are made as of
another date, which shall be true and correct as of such date), except where the
failure to be true and correct would not, individually or in the aggregate, have
a  Material  Adverse  Effect,  and  Seller  shall  have  delivered  to  Buyer  a
certificate of Seller to such effect signed by a duly authorized
corporate officer of Seller.

     (b) Performance  and Compliance.  The Seller Group shall have performed and
complied in all material  respects  with all of the  covenants  required by this
Agreement  to be  performed  or  complied  with by them on or before the Closing
Date,  and Seller shall have  delivered to Buyer a certificate of Seller to such
effect signed by a duly authorized corporate officer of Seller.

     (c) Opinion of Counsel.  Buyer shall have  received  from  Dechert  Price &
Rhoads,  counsel for the Seller Group,  an opinion dated as of the Closing Date,
in a form  reasonably  satisfactory  to  counsel  to Buyer  with  respect to the
matters set forth on Exhibit G.

     (d) Waiting  Periods.  Any applicable  waiting period under the HSR Act and
the  regulations  promulgated  thereunder  or  the  Anti-Monopoly  Law  and  the
regulations promulgated thereunder shall have expired or been terminated.

     (e) Litigation.  No order of  any court  or administrative  agency shall be
in effect that restrains or prohibits the transactions contemplated hereby.

     (f)  Non-Compete  Agreement.  Spectra-Physics  AB shall have  executed  and
delivered to Buyer a non-compete agreement (the "Non-Compete Agreement"),  which
Non-Compete  Agreement shall be substantially in the form of Exhibit H  attached
hereto.

     (g)  Transition  Services  Agreement.  The Seller  Subsidiaries  shall have
entered  into  a  transition   services  agreement  (the  "Transition   Services
Agreement")  with the Buyer Group with  respect to the  provision  by the Seller
Subsidiaries of certain administrative  services and the lease of certain office
space  related to the  non-U.S.  operations  of the  Business,  such  Transition
Services Agreement to be substantially in the form of Exhibit I attached hereto.

     (h) Minute  Books and  Resignations.  Buyer shall have  received the minute
books and stock record books of each of Scanning,  the Scanning Subsidiaries (if
then  available) and TxCom.  Seller will cause to be removed or deliver to Buyer
the written  resignations,  effective as of the Closing  Date, of all members of
the boards of directors of Scanning  and the Scanning  Subsidiaries  and such of
the officers of Scanning and the Scanning Subsidiaries as Buyer has requested.
<PAGE>

     (i) Permits, Approvals and Authorizations.  All consents,  waivers, permits
and approvals from any  governmental or regulatory  body,  which are required by
applicable  law  to be  obtained  prior  to  consummation  of  the  transactions
contemplated  hereby  shall  have been  obtained  and shall be in full force and
effect on the Closing Date.

     (j)  Certificate  of  Incorporation,  Bylaws.  Buyer shall have  received a
complete  and correct copy of the  Certificate  of  Incorporation  and Bylaws of
Scanning,  TxCom, Seller and SP Holding,  each certified by the Secretary of the
respective corporation.

     (k) Certificates of Good Standing.  Buyer shall have received a Certificate
of Good Standing,  dated within a recent date of Closing,  for Scanning,  TxCom,
Seller and SP Holding.

     (l) Secretary's Certificate. Buyer shall have received a Certificate of the
Secretary of Seller, SP Holding, and each of the Seller Subsidiaries  certifying
(a) the  resolutions  adopted by the Board of Directors  (and  stockholders,  if
necessary) authorizing, as appropriate, this Agreement, the TxCom Agreement, the
Foreign  Sales  Agreements  and all other  agreements  and related  transactions
contemplated  hereunder  and (b) the  signatures  of the officers  authorized to
execute such agreements.

     6.2  Conditions  Precedent  to the  Obligations  of the Seller  Group.  The
obligations  of the  Seller  Group to proceed  with the  Closing  hereunder  are
subject to the  fulfillment  prior to or at Closing of the following  conditions
(any one or more of  which  may be  waived  in  whole  or in part by  Seller  at
Seller's option):

     (a) Bringdown of Representations  and Warranties.  The  representations and
warranties of Buyer contained in this Agreement shall be true and correct on and
as of the date of  Closing,  with the same  force  and  effect  as  though  such
representations and  warranties had been made  on, as of and with  reference  to
such date  (other than such  representations  and  warranties  as are made as of
another date, which shall be true and correct as of such date), except where the
failure to be true and correct would not, individually or in the aggregate, have
a Material  Adverse Effect on Buyer,  and Buyer shall have delivered to Seller a
certificate  of Buyer  to such  effect  signed  by a duly  authorized  corporate
officer of Buyer.

     (b) Performance  and  Compliance.  The Buyer Group shall have performed and
complied  in all  material  respects  with all the  covenants  required  by this
Agreement to be performed or complied with by them on or before the Closing Date
and Buyer shall have  delivered to Seller a certificate of Buyer to such effect,
signed by a duly authorized corporate officer of Buyer.
<PAGE>

     (c) Opinion of Counsel for the Buyer Group. Seller shall have received from
Boylan,  Brown, Code, Fowler, Vigdor & Wilson, LLP, counsel for the Buyer Group,
an opinion dated as of the Closing Date, in a form  reasonably  satisfactory  to
counsel to the Seller Group with respect to the matters set forth on Exhibit I.

     (d) Waiting  Periods.  Any applicable  waiting period under the HSR Act and
the  regulations  promulgated  thereunder  or  the  Anti-Monopoly  Law  and  the
regulations promulgated thereunder shall have expired or been terminated.

     (e) Litigation.  No order of  any  court or administrative agency shall  be
in effect that restrains or prohibits the transactions contemplated hereby.

     (f) TxCom Guarantee.  Spectra-Physics  AB shall have been released from its
guarantee  obligations  under the  Guaranty  dated  August 28,  1995 in favor of
Vincent  Baumier,  Daniel  Mawas,  Bernard  Malaise and Antoine  Bonodot,  dated
August 28, 1995 (the "TxCom Guarantee").

     (g) Permits, Approvals and Authorizations.  All consents,  waivers, permits
and approvals from any  governmental or regulatory  body,  which are required by
applicable  law  to be  obtained  prior  to  consummation  of  the  transactions
contemplated hereby and shall be in full force and effect on the Closing Date.

     (h)  Certificate  of  Incorporation,  Bylaws.  Seller shall have received a
complete  and correct copy of the  Certificate  of  Incorporation  and Bylaws of
Buyer and any subsidiaries Buyer creates to effect the transactions contemplated
hereby.

     (i) Certificates of Good Standing. Seller shall have received a Certificate
of Good  Standing,  dated  within a recent  date of  Closing,  for Buyer and any
subsidiaries Buyer creates to effect the transactions contemplated hereby.

     (j)  Secretary's  Certificate.  Seller shall have received a Certificate of
Secretary of Buyer and any subsidiaries Buyer creates to effect the transactions
contemplated  hereby  certifying  (a) the  resolutions  adopted  by the Board of
Directors (and stockholders,  if necessary)  authorizing,  as appropriate,  this
Agreement,  the TxCom  Agreement,  the Foreign  Sales  Agreements  and all other
agreements  and  related  transactions   contemplated   hereunder  and  (b)  the
signatures of the officers authorized to execute such agreements.

          6.3 Termination.

          (a) This Agreement may be terminated:

<PAGE>

          (i) by the mutual written agreement of Buyer and Seller;

          (ii) by  written  notice  of Buyer to Seller  if the  Closing  has not
     occurred  within 60 days after the date  hereof;  provided,  however,  that
     Buyer may not terminate the Agreement pursuant to this paragraph if Closing
     shall not have  occurred  by such  date  primarily  as a result of  Buyer's
     breach of its obligations hereunder; or

          (iii) by  written  notice of Seller  to Buyer if the  Closing  has not
     occurred  within 60 days after the date  hereof;  provided,  however,  that
     Seller may not  terminate  the  Agreement  pursuant  to this  paragraph  if
     Closing  shall  not have  occurred  by such date  primarily  as a result of
     Seller's breach of its obligations hereunder.

            (b) In the  event of  termination  by Seller  or Buyer  pursuant  to
     paragraph (a) of this Section 6.3, written notice thereof shall promptly be
     given to the  other and the  transactions  contemplated  by this  Agreement
     shall be terminated,  without further action by either. If the transactions
     contemplated by this Agreement are terminated as provided herein:

          (i) the provisions of  Section 7.1  (relating to expenses) and Section
     7.2  (relating  to brokers'  fees)  hereto  shall  remain in full force and
     effect; and

          (ii) in no event  shall any  termination  of this  Agreement  limit or
     restrict the rights and  remedies of either party hereto  against the other
     party  which  has  willfully  breached  any  of  the  agreements  or  other
     provisions of this Agreement prior to termination hereto.


                                  ARTICLE VII

                         CERTAIN ADDITIONAL COVENANTS

     7.1  Costs,  Expenses  and  Taxes.  Buyer  and  Seller  will pay all of the
expenses  of the Buyer  Group and the Seller  Group,  respectively,  incurred in
connection with this Agreement and the transactions  contemplated  hereby. Buyer
will pay all sales,  value added,  transfer,  documentary  and similar  taxes in
connection with the delivery of the Shares and  the TxCom Shares  and in respect
of the conveyances,  assignments or transfers to Buyer or the Buyer Subsidiaries
of the Purchased Assets and the TxCom Rights.

     7.2 Brokers.  Each of the Seller Group and the Buyer Group  represents  and
warrants  to the other that there are no claims (or any basis for any claim) for
brokerage  commissions,  finder's fees or like payments in connection  with this
<PAGE>

Agreement or the  transactions  contemplated  hereby  resulting  from any action
taken by them or on their  behalf,  except  that  Salomon  Brothers  Inc and the
Robinson-Humphrey  Company,  Inc. (the "Seller  Brokers")  have been retained by
Seller and Seller shall be responsible for any fees and expenses that may be due
to the Seller Brokers. Hambrecht & Quist Incorporated has been retained by Buyer
and Buyer  shall be  responsible  for any fees and  expenses  that may be due to
Hambrecht & Quist  Incorporated.  The Seller Group shall  indemnify and hold the
Buyer  Group  harmless  and Buyer  shall  indemnify  and hold the  Seller  Group
harmless with respect to their  respective  representations  and  warranties set
forth in this Section 7.2.

     7.3  Employment.  Effective as of the Closing  Date,  all Foreign  Business
Employees shall become employees of the appropriate Buyer Subsidiaries,  subject
to  the  satisfaction  of any  legal  requirements  regarding  the  transfer  of
employment of such employees.  The Buyer Subsidiaries shall in all circumstances
be responsible for any severance, termination or similar payment that may be due
to any Foreign  Business  Employee.  Buyer  agrees that to the extent  length of
service is relevant for any purpose  under any pension or other  benefit plan or
arrangement made  available  to  Foreign  Business  Employees,  such  Foreign
Business  Employees  shall  receive  credit for their years of service  with the
applicable  Seller  Subsidiary.  Buyer  further  agrees that any medical or life
insurance  benefit plans made  available to all employees of the Business  shall
not contain a pre-existing condition exclusion.

     7.4 Best Efforts.  Subject to the terms and  conditions of this  Agreement,
each party will use its  reasonable  best  efforts to cause the Closing to occur
including,  without  limitation,  its  reasonable  best  efforts  to obtain  all
necessary waivers, consents and approvals and effect all necessary registrations
and filings.

     7.5  Transition  Services  Agreement.  On  the  Closing  Date,  the  Seller
Subsidiaries and the Buyer Subsidiaries shall enter into the Transition Services
Agreement.

     7.6 Regulatory Filings. Seller and Buyer agree to file or cause to be filed
all necessary  documentation with the appropriate  government bodies  as soon as
practicable  to  obtain  as  soon  as  possible  all  consents  required  by any
governmental bodies in order to consummate the transactions contemplated by this
Agreement.  Without  limiting the generality of the foregoing,  Seller and Buyer
agree to file or cause to be filed, respectively, as soon  as practicable  after
the date  hereof,  but in no event more than five  business  days after the date
hereof,  an acquired  person's and acquiring  person's HSR Act  notification and
report form with  respect to the  transactions  contemplated  by this  Agreement
required by the HSR Act. Buyer further  agrees to file or cause to be filed,  as
<PAGE>

soon as  practicable  after  the date  thereof,  but in no event  more than five
business days after the date hereof,  a Notification of Acquisition of Business,
or any other  appropriate  form,  with the Fair Trade  Commission  of Japan with
respect to the transactions  contemplated by this Agreement in Japan, and Seller
further  agrees to use its  reasonable  best efforts to cooperate  with Buyer to
supply Buyer with such  information  or data as Buyer may require to prepare and
file such form.  Seller and Buyer  further  agree to use their  reasonable  best
efforts  to  comply  promptly  with  and,  where  appropriate,   to  respond  in
cooperation  with each other to, all requests or requirements  which  applicable
federal, state, local, foreign or other applicable law or governmental officials
may impose on them with  respect to the  transactions  which are the  subject of
this  Agreement.  In  addition,  anything  in  this  Agreement  to the  contrary
notwithstanding,  Buyer covenants and agrees to use its best efforts to (a) take
any action  requested or accept any condition  imposed by any government body in
connection with any consent required by any governmental  body to consummate the
transactions  contemplated  in this  Agreement  and (b)  resolve  any  objection
asserted with respect to the transactions  contemplated hereby under any federal
or state  statute,  rule or  regulation  designed  or  intended  to  prohibit or
regulate actions in restraint of trade, including, if required by any applicable
government  authority,  agreeing  to divest or hold  separate  pending  required
divestitures, businesses owned directly or indirectly by Buyer and entering into
such other  agreements,  order or decrees  with such  government  body as may be
required by such government body.

     7.7 Use of Name.

     (a)  Anything  herein to the  contrary  notwithstanding,  no interest in or
right  to use the name or mark "Spectra-Physics",  any derivation  thereof,  any
name or mark  confusingly  similar  therewith,  or any logo  used in  connection
therewith  (including without limitation the stylized logo  "S")  (collectively,
the  "Retained  Names and Logos"),  is being  transferred  to Buyer or the Buyer
Subsidiaries pursuant to the transactions contemplated hereby, and except as set
forth in this Section 7.7,  after the Closing,  Scanning, TxCom and the Scanning
Subsidiaries  will cease to have any  interest  in or right to use the  Retained
Names and Logos.  The Seller  agrees  that it will not at any time object to the
use of the word  "SpectraScan"  in the  corporate  name of Scanning  and for all
other  purposes  related to the  Business  or any other  business  conducted  by
Scanning,  the Buyer Group or their  successors or assigns in the future.  Buyer
agrees  to  cause   Scanning  to  file  an  amendment  to  its   Certificate  of
Incorporation  to change its name  promptly  after the Closing to eliminate  any
reference to the Retained Names and Logos.

     (b) Seller grants Buyer a limited  non-exclusive  royalty-free  license (A)
commencing  on the Closing Date and ending two years after the Closing  Date, to
<PAGE>

use the mark  "Spectra-Physics,"  the name  "Spectra-Physics  Scanning  Systems,
Inc."  and the  stylized  logo  "S" (the  "Licensed  Names")  solely  on (i) any
products or  inventory  in the  possession  of  Scanning  or, with regard to the
Business,  the  Seller  Subsidiaries  at the  time of the  Closing  or (ii)  any
products  manufactured  by Scanning during the two-year period after the Closing
Date  (except  for  products  using  new  molds)  (collectively,  the  "Licensed
Products"),  (B)  commencing on the Closing Date and ending six months after the
Closing Date, to use solely in connection with the Business any signs,  purchase
orders,  invoices,  sales  orders,  labels,   letterhead,   shipping  documents,
brochures,  displays,  advertising,  promotional  materials,  and other  written
materials  existing on the Closing Date that bear the Licensed  Names,  (C) with
regard to any labels  affixed to products that bear the Licensed Names for which
government  consent would be necessary to replace the Licensed Name appearing on
the label,  to use such labels  until the  earlier of (i) receipt of  government
approval to replace the Licensed Name  appearing on the labels or (ii) two years
after the date of the Closing and (D)  commencing on the Closing Date and ending
two  years  after  the  Closing  Date,  to use the  phrase  "formerly  known  as
Spectra-Physics  Scanning Systems, Inc." on any written materials used solely in
connection with the Business. Notwithstanding the foregoing, Buyer agrees to use
its best efforts to discontinue  its use of the Licensed Names as soon after the
Closing  as  commercially  practicable,   consistent  with  Buyer's  good  faith
judgment.

     (c) Buyer agrees that all of its use of the  Licensed  Names shall inure to
the exclusive benefit of Seller for trademark purposes,  and Buyer agrees not to
challenge  Seller's  ownership  of the  Licensed  Names or the  validity  of the
Licensed Names or this license. The license granted by this Agreement is subject
to the concurrent right of Seller and its licensees to use the Licensed Names in
connection  with any  product,  service or  business.  Buyer  shall only use the
Licensed  Names in providing  Licensed  Products  that are of a quality equal or
superior to those  provided by Scanning  under the Licensed Names as of the date
hereto.  Seller  shall have the right to monitor and inspect the quality of such
Licensed Products from time to time on reasonable  notice;  provided that Seller
shall have no right to inspect or monitor any Licensed  Products  until they are
commercially  available  for sale. At Seller's  request,  Buyer shall submit for
Seller's inspection  representative samples of all advertising,  promotional and
marketing  materials  bearing the  Licensed  Names used in  connection  with the
Business.  Buyer acknowledges that the purpose of the inspections  conducted and
quality control standards  prescribed by Seller in this Agreement is to maintain
the reputation,  image and goodwill of the Licensed Names. Seller shall not bear
or assume  any  responsibility  or  liability  to third  parties  as a result of
setting or enforcing such  standards or for any failure of any Licensed  Product
or of Buyer's conduct of the Business to conform to such standards.

<PAGE>

Buyer  shall  indemnify,  defend and hold  Seller  harmless  against any and all
claims,  losses,  liabilities,  damages, and expenses (including attorneys' fees
and expenses)  arising from or relating to Buyer's use of the Licensed  Names in
conducting the Business or in marketing, distributing,  offering, or selling the
Licensed  Products or  otherwise  arising from or relating to Buyer and Seller's
use of similar  names.  Buyer  shall  take no action  that  would  prejudice  or
interfere with the validity of or Seller's  ownership of the Licensed Names, and
Buyer shall not enter into any  agreement  with any third party which in any way
alters,  diminishes or restricts  the rights of Seller in the Licensed  Names or
places any restrictions or conditions upon the use or appearance of any Licensed
Name.  Buyer shall not prosecute any  application  for the  registration  of any
trademark,  service mark or trade name  containing  any form or variation of any
Licensed  Name (other than the name  "SpectraScan").  Seller grants this license
"as is," and makes no  representations  or  warranties  concerning  the Licensed
Names. Buyer may not assign, sublicense,  pledge, grant or otherwise encumber or
transfer this license or any of its rights and obligations hereunder (whether by
operation of law or otherwise) without the prior written consent of Seller.

     7.8  Registration  Rights.  At Closing,  Buyer and Seller will enter into a
registration  rights  agreement  (the  "Registration  Rights  Agreement")  which
agreement shall be substantially in the form of Exhibit K hereto.

     7.9 TxCom Guarantee.  If requested by Seller,  Buyer agrees to enter into a
guarantee  agreement with Vincent  Baumier,  Daniel Mawas,  Bernard  Malaise and
Antoine  Bonodot in  substantially  the same form as, and in replacement of, the
TxCom Guarantee.

     7.10  Buyer's  Further  Assurances.  Buyer  agrees  to,  and to  cause  its
Subsidiaries to, promptly transfer,  convey, assign and deliver to Seller or its
designee  all  notices,  correspondence,   documentation,  rights  and  payments
received  by the  Buyer  Group  after  the  Closing  relating  to  the  Excluded
International  Assets,  or any asset,  claim or right  dividended  or  otherwise
transferred  to  Seller  or  its  designees  pursuant  to  Section 1.3  of  this
Agreement.

     7.11  Restriction  on Sale of Buyer Stock.  Seller agrees not to sell, in a
privately  negotiated   transaction,   any  shares  of  Buyer  Stock  to  Symbol
Technologies Inc. or its subsidiaries or affiliates. The parties agree that this
restriction  shall not prohibit  Seller from selling shares of Buyer Stock on or
through  the  facilities  of any  national  securities  exchange  or the  NASDAQ
National Market System.
<PAGE>

     7.13 Patent License Agreement.  From and after the Closing, the Buyer shall
be bound by, and shall be considered the "Licensor" for all purposes under,  the
Patent License Agreement between Seller and  Spectra-Physics  Holdings USA, Inc.
referred to on Schedule 2.1(t).


                                  ARTICLE VIII

                                 INDEMNIFICATION

     8.1  Indemnification by the Seller.  Subject to  the limitations  contained
herein,  after the  Closing,  Seller and SP  Holding  shall  indemnify  and hold
harmless  the  Buyer  Group  from  and  against  any  loss,  liability,   claim,
obligation,  damage or  expense  (including  reasonable  legal,  consulting  and
accounting fees and expenses and costs of litigation)  (collectively  "Damages")
that any  member of the  Buyer  Group  may  incur or  suffer  arising  out of or
resulting from:

     (a) the inaccuracy of any  representation or warranty made by Seller and SP
Holding in this  Agreement  or in any  closing  certificate  delivered  pursuant
hereto;

     (b) any failure by Seller or SP Holding to perform any obligation or comply
with any covenant or agreement specified herein;

     (c) any liability  for federal or foreign  income Taxes of Scanning and its
Subsidiaries,  Seller  Subsidiaries  or TxCom with respect to any taxable period
that ends on or prior to the Closing Date;

     (d) any  liability  owed to a  Governmental  Authority  for  state or local
income or franchise  Taxes,  Payroll Taxes or state or local sales and use Taxes
of Scanning and its Subsidiaries,  Seller Subsidiaries, or TxCom with respect to
any taxable  period that ends on or prior to the Closing  Date,  provided that a
Tax Return for the same type of tax for which such  liability  is owed was filed
with  such  Governmental   Authority  by  or  on  behalf  of  Scanning  and  its
Subsidiaries,  Seller Subsidiaries or TxCom on or before the Closing Date or was
caused to be filed by Seller with such Governmental  Authority after the Closing
Date pursuant to Section 9.1(a), except to the extent any of the foregoing Taxes
are reflected on the Closing Date Balance Sheet;

     (e) any  liability  for Taxes of Seller or of any other  entity  which is a
member of any  consolidated,  combined or unitary  federal or state tax group of
which  Scanning  is or was a member on or before the Closing  Date,  pursuant to
Treasury Regulation 1.1502-6 or any analogous state or local tax provisions; and

     (f) any  liability  for  Taxes of  Scanning  and its  Subsidiaries,  Seller
Subsidiaries, or TxCom, other than the Taxes described in Section 8.1(c), (d) or
<PAGE>

(e),  with  respect to any  taxable  period that ends on or prior to the Closing
Date,  except to the extent any such Taxes are  reflected  on the  Closing  Date
Balance Sheet.

     8.2 Indemnification By Buyer. Subject to the limitations  contained herein,
after the Closing, Buyer shall indemnify and hold harmless the Seller Group from
and against any Damages  that any member of the Seller Group may incur or suffer
arising out of or resulting from:

     (a) the inaccuracy of any  representation or warranty made by Buyer in this
Agreement or in any certificate delivered pursuant hereto;

     (b) any  failure  by Buyer to perform  any  obligation  or comply  with any
covenant or agreement specified herein; and

     (c) the  Assumed  International  Liabilities,  the  TxCom  Obligations  and
Spectra-Physics AB's obligations under the TxCom Guarantee.

     8.3 Limitations on Indemnification Obligations.

     (a) Seller  and SP  Holding  shall not have any  liability  under  Sections
8.1(a) or Section  8.1(f) of this  Agreement for Damages unless the aggregate of
all Damages for which Seller and SP Holding  would,  but for this  sentence,  be
liable exceeds  US $1,350,000 on a cumulative basis, and then only to the extent
of any such excess.  Seller and SP Holding  shall not have any  liability  under
Section 8.1(d) of this Agreement for Damages unless the aggregate of all Damages
for which Seller and SP Holding would, but for this sentence,  be liable exceeds
US $50,000 on a cumulative basis and then only to the extent of any such excess.
Under  no   circumstances   shall  Buyer  and  its  affiliates  be  entitled  to
indemnification  for Damages  under  Section  8.1(a) and Section  8.1(f) of this
Agreement for an amount in excess of US $10,000,000.

     (b) No  action,  claim or set off for  Damages  under  Sections  8.1(a) and
8.1(f) of this  Agreement  shall be brought or made by the Buyer Group after the
date that is twelve (12) months  after the Closing  Date,  except that such time
limitation  shall not apply to claims  for  misrepresentations  or  breaches  of
warranty relating to Sections 2.1(b) and 2.1(d).  The time limitation  specified
in this Section 8.3(b) shall not apply to any item as to which Buyer shall have,
before the  expiration  of the  applicable  period,  previously  made a claim by
delivering a notice  (stating in  reasonable  detail the basis of such claim) to
Seller.

     (c) The amount of any Damages for which  indemnification  is provided under
Sections 8.1 and 8.2 of this Agreement  shall be (i), in the case of calculating
Buyer's Damages,  net of any accruals or reserves  reflected on the Closing Date
Balance  Sheet with respect to the matters to which those Damages  relate,  (ii)
net of any amounts  recovered by the indemnified party for such Damages pursuant
<PAGE>

to any  indemnification  by or indemnification  agreement  with any  third party
and/or any  insurance  policies with respect to such Damages and (iii) offset to
the extent of the present value  (calculated  using a discount rate equal to the
appropriate  applicable  federal  rate under Code  Section  1274(d))  of any tax
benefit (including without limitation, any benefit attributable to a decrease in
income, increase in deductions or credits, or increase in basis) realized by the
indemnified party arising from, or in connection with, the incurrence or payment
of any such Damages.  Buyer shall not be entitled to  indemnification  hereunder
with  respect to Taxes of TxCom if the  existence  of such Taxes  constitutes  a
breach of the Seller's  Representations and Warranties  Agreement by and between
Vincent Baumier,  Bernard Malaise,  Daniel Mawas, Alain Bonodot and TxCom and SP
Holding,  dated August 28, 1995 (the "Representations and Warranties Agreement")
and Buyer (as successor to SP Holding) receives  indemnification for such breach
pursuant to the Representations and Warranties Agreement.

     (d)  Seller,  SP  Holding  and Buyer  shall have no  obligation  under this
Agreement  to  indemnify  the other with respect to any matter that was or could
have been raised by the other in connection  with the Closing Date Balance Sheet
pursuant to the terms of Section 1.6.

     (e) From and after the Closing, no claim for indemnity shall be made by the
Buyer  Group or the  Seller  Group,  if such claim is based on an event or facts
disclosed to such party in writing prior to Closing.

     (f)  Buyer  shall  not  have any  liability  under  Section 8.2(a)  of this
Agreement for Damages unless the aggregate of all Damages for which Buyer would,
but for this sentence,  be liable exceeds  US $1,350,000 on a cumulative  basis,
and then only to the extent of any such  excess.  Under no  circumstances  shall
Seller,  SP Holding and their  affiliates  be entitled  to  indemnification  for
Damages  under  Section 8.2(a)  of this  Agreement  for an  amount  in excess of
US $10,000,000.

     (g) No action,  claim or set off for Damages under Sections  8.2(a) of this
Agreement  shall be brought or made by any member of the Seller  Group after the
date that is twelve (12) months  after the Closing  Date,  except that such time
limitation  shall not apply to claims  for  misrepresentations  or  breaches  of
warranty  relating  to Sections  3.1(b),  3.1(d),  3.1(m) and  3.1(r).  The time
limitation  specified in this  Section 8.3(g)  shall not apply to any item as to
which Seller or SP Holding shall have,  before the  expiration of the applicable
period,  previously  made a claim by delivering a notice  (stating in reasonable
detail the basis of such claim) to Buyer.
<PAGE>

      8.4   Procedures Relating to Indemnification.

     (a) In order for a party (the  "Indemnified  Party") to be  entitled to any
payment under the  indemnification  provided for under this Agreement in respect
of, arising out of or involving a claim,  legal proceeding or demand made by any
person, firm,  governmental  authority,  corporation or other entity (other than
any  of  the  parties  to  this  Agreement  or  their  affiliates)  against  the
Indemnified  Party (a "Third Party Claim"),  such Indemnified  Party must notify
the other party (the "Indemnifying  Party") in writing of the Third Party Claim,
setting  forth in  reasonable  detail the basis for such  claim,  as promptly as
practicable,  but in any case within 30 days,  after receipt by such Indemnified
Party of written notice of the Third Party Claim (the "Indemnification Notice");
provided,  however,  that failure to give such Indemnification  Notice shall not
affect the  indemnification  provided  hereunder  except to the extent  that the
Indemnifying  Party  shall  have been  prejudiced  as a result of such  failure.
Thereafter,  the  Indemnified  Party shall  deliver to the  Indemnifying  Party,
within five business days after the Indemnified Party's receipt thereof,  copies
of  all  notices  and  documents   (including  court  papers)  received  by  the
Indemnified Party relating to the Third Party Claim.

     (b) In connection with any Third Party Claim,  the  Indemnifying  Party, at
the sole cost and expense of the Indemnifying Party,  may,  upon written notice
to the  Indemnified  Party,  assume the defense of any such Third  Party  Claim.
Should the  Indemnifying  Party so elect to assume the  defense of a Third Party
Claim,  the Indemnifying  Party will not be liable to the Indemnified  Party for
legal expenses subsequently incurred by the Indemnified Party in connection with
the defense  thereof.  If the  Indemnifying  Party  assumes  such  defense,  the
Indemnified  Party shall be entitled to  participate  in, but not  control,  the
defense  thereof at its own  expense.  If the  Indemnifying  Party shall fail to
defend such Third Party Claim,  or if after  commencing or undertaking  any such
defense to such Third Party Claim,  fails to prosecute,  or withdraws  from such
defense, the Indemnified Party shall have the right to undertake such defense at
the  Indemnifying  Party's  expense.   Whether or  not the  Indemnifying  Party
chooses  to  defend  or  prosecute  any Third Party  Claim,  the Indemnified and
Indemnifying Parties shall cooperate in the defense or prosecution thereof. Such
cooperation  shall include  access during normal  business hours afforded to the
Indemnifying  Party to, and reasonable  retention by the  Indemnified  Party of,
records and information which are reasonably relevant to such Third Party Claim,
and  making  employees  available  on a  mutually  convenient  basis to  provide

<PAGE>


additional  information and explanation of any material provided hereunder,  and
the  Indemnifying  Party  shall  reimburse  the  Indemnified  Party  for all its
reasonable  out-of- pocket  expenses in   connection  therewith.  Regardless  of
whether the  Indemnifying  Party  elects to assume the defense of any such Third
Party Claim,  the  Indemnified  Party shall not admit any liability with respect
to, or settle,  compromise  or  discharge,  such Third Party  Claim  without the
Indemnifying Party's prior written consent.

     8.5 Exclusive  Remedy.  The  indemnification  provided in this Article XIII
shall be the sole and  exclusive  remedy  after the  Closing  Date for  monetary
damages  available  to the Buyer Group and the Seller Group for breach of any of
the terms,  conditions,  representations  or  warranties  contained  herein.  As
between  the  Seller  Group,  on the one  hand,  and  the  Buyer  Group  and its
affiliates,  including without limitation after the Closing, Scanning and TxCom,
on the other hand, the rights and  obligations  set forth in this Agreement will
be the exclusive  rights and  obligations  with respect to this  Agreement,  the
events giving rise to this Agreement and the transactions provided for herein or
contemplated  hereby  (other  than,  prior to the Closing,  the  Confidentiality
Agreement  dated  February 1, 1996  between  Buyer and  Spectra-Physics  AB (the
"Confidentiality Agreement")).  Without limiting the generality or effect of the
foregoing,  as a material  inducement to the other parties hereto  entering into
this  Agreement,  and in light of,  among other  factors,  the  acknowledgements
contained in  Section 3.2,  each of the parties to this Agreement  hereby waives
any claim or cause of action, known and unknown, foreseen and unforeseen,  which
exists or may arise in the future, or which it otherwise might assert, including
without  limitation  under the common law or federal or state  securities  laws,
trade  regulation  laws,  Environmental  Laws  (including  CERCLA  or any  other
statutes now or hereafter in effect) or other Laws, by reason of this Agreement,
the events  giving rise to this  Agreement  and the  transactions  provided  for
herein  or  contemplated  hereby  or  thereby  (other  than  in  respect  of the
Confidentiality  Agreement),  except for (i) claims or causes of action  brought
under and  subject  to the  terms  and  conditions  of this  Agreement,  or (ii)
injunctive or other equitable relief (other than for rescission or rescissory or
similar damages).


                                   ARTICLE IX

                                   TAX MATTERS

      9.1   Tax Responsibility.

     (a) Seller shall be responsible  for the  preparation and filing of (i) all
federal and foreign income tax Returns and all consolidated, combined or unitary
state or local  income or  franchise  tax Returns  which  include the results of
<PAGE>

Scanning  for any taxable  period  ending on or before the Closing  Date and all
other state or local income or  franchise  tax Returns of Scanning for a taxable
year that ends on the Closing  Date;  and (ii) all other Tax Returns of Scanning
which are  required  to be filed on or before  the  Closing  Date  (taking  into
account any applicable extensions). Seller shall be responsible for remitting or
causing to be remitted to  the proper  Governmental  Authority  all payments  of
Taxes  required to be paid on or before  filing any such return as shown thereon
except for any such Taxes that are reflected on the Closing Date Balance Sheet.

     Seller  shall  submit to Buyer any Return  prepared by Seller which has not
been filed on or before the Closing Date and which is required to be executed by
an officer of  Scanning.  Within  fifteen  business  days of the receipt of such
return,  Buyer shall cause the  appropriate  officer of Scanning to duly execute
such return and shall deliver such duly executed  return to Seller.  Buyer shall
also,  within such fifteen-day  time period,  remit to Seller an amount equal to
the amount of any Taxes due with respect to such return,  but only to the extent
such Taxes are  reflected  on the Closing Date  Balance  Sheet.  Seller shall be
responsible  for filing such return and remitting all payments of Taxes required
to be paid with respect to such return.

     Seller will also be responsible for deferred income, if any, triggered into
income by Treasury Regulation Section  1.1502-13 and Treasury Regulation Section
1.1502-14 and excess loss  accounts,  if any,  taken into income under  Treasury
Regulation  Section  1.1502-19 for all periods  through the Closing Date and pay
any federal income Taxes  attributable  to such income.  Seller will prepare and
file all Returns for which it is responsible  for under this Section 9.1(a) in a
manner that is consistent  with its past tax accounting  methods or practice and
will  take  no  position  on  such  returns  that  relate  to  Scanning  and its
Subsidiaries that materially and adversely affects Scanning and its Subsidiaries
after the Closing Date,  unless such position would be reasonable in the case of
a person  that owned  Scanning  and its  Subsidiaries  both before and after the
Closing Date or is consistent with past tax accounting methods or practice.

     (b) Buyer  shall  cause  Scanning  to prepare  and file all Tax  Returns of
Scanning not described in Section 9.1(a). Buyer shall remit or cause Scanning to
remit to the proper taxing authorities all payments of Taxes required to be paid
on or  before  filing  any such  return  as shown  thereon.  Buyer  will take no
position  (nor will cause  Scanning to take a position) on any Return that would
materially and adversely  affect either Seller or Scanning and its  Subsidiaries
with  respect to any  Returns  (and any  liability  for Taxes  related  thereto)
described in Section  9.1(a),  unless such  position  would be reasonable in the
case of a person that owned Scanning and its Subsidiaries  both before and after
the Closing Date or is consistent with past tax accounting methods or practice.
<PAGE>

     (c) All Tax Returns of Scanning,  or which include the results of Scanning,
(other than any one-day Returns required by reason of any election  described in
Section 9.2  hereto)  shall be  prepared  on the  basis of a  taxable  period of
Scanning  ending at the close of business on the Closing  Date,  unless  clearly
required otherwise by applicable Tax law.

     (d) Within 180 days after the Closing  Date,  Buyer shall provide to Seller
completed Tax Return packages and such other information reasonably requested by
Seller with respect to Scanning for the  preparation of any Tax Return  required
to be filed by Seller under  Section  9.1(a)(i).  In addition,  Seller and Buyer
shall provide  reasonable  cooperation to each other in connection  with (i) the
preparation  or  filing  of  any  Tax  Return,  Tax  election,  Tax  consent  or
certification,  or  any  claim  for a Tax  refund,  (ii)  any  determination  of
liability for Taxes,  and (iii) any audit,  examination  or other  proceeding in
respect of Taxes of Scanning.  Such cooperation  shall include making available,
on a reasonable basis,  employees of the Seller, Buyer, or Scanning, as the case
may be, whose out-of-pocket costs, if any, such as travel and lodging,  shall be
reimbursed by the party to which such  employees are made  available.  After the
Closing Date, Seller and Buyer shall make available to each other, as reasonably
requested  all  information,  records or  documents  of Scanning for all periods
prior to and including the Closing Date and shall preserve all such information,
records  and  documents  until  the  expiration  of any  applicable  statute  of
limitations,   including  extensions  thereof,  provided  that  notice  of  such
extension is given to the party which did not grant the extension.

     (e)  Notwithstanding  anything  to the  contrary  in  Section 8.4  of  this
Agreement,  Seller shall have the sole right, at its own expense, to control any
audit or examination by any  Governmental  Authority,  to initiate any claim for
refund,  to amend any  Return,  or to contest,  resolve  and defend  against any
assessment,  notice or deficiency,  or other  adjustment or proposed  adjustment
relating to any Taxes for which Buyer seeks to be indemnified by Seller pursuant
to Section 8.1  hereto.  Seller will not settle any such audit in a manner which
would materially and adversely  affect Scanning and its  Subsidiaries  after the
Closing Date unless such settlement  would be reasonable in the case of a person
that owned Scanning and its Subsidiaries  both before and after the Closing Date
or such settlement is consistent with past tax accounting methods or practice of
Seller or Scanning and its Subsidiaries in handling such audits.


<PAGE>

     9.2 Section 338(h)(10) Election.

     Seller and Buyer agree that they shall jointly make or cause to be made the
election  under   Section 338(h)(10)   of  the  Code  and  Treasury   Regulation
Section 1.338(h)(10)-1(d)  (and any corresponding election under state and local
Tax law) with respect to the purchase and sale of the Shares, except that Seller
and Buyer shall jointly elect not to have an election  under  Section 338(h)(10)
or Section 338(g) of the Code apply for California purposes  (collectively,  the
"Elections"). Because Seller is not the common parent of a "selling consolidated
group" of which  Scanning is a member,  as that term is defined  under  Treasury
Regulation  Section 1.338(h)(10)-1,  Seller  shall  cause the person that is the
common parent with respect to the selling  consolidated group to join with Buyer
in making the Elections with respect to Scanning. (Any person authorized to make
the Elections  with respect to the selling  consolidated  group and Scanning (on
behalf of Seller) is referred to as an "Authorized Person" herein).  Buyer shall
prepare IRS Form 8023-A (and any required attachments) and any similar state and
local tax forms (and any required  attachments)  required to make the  Elections
(collectively,  the "Election Forms" and each  singularly,  the "Election Form")
and shall submit the Election Forms to Seller no later than 75 days prior to the
date the Election  Forms are required to be filed.  The amount of  consideration
allocated to the purchase  and sale of the Shares shall be  consistent  with the
Purchase Price allocation set forth in Section 1.7  hereto.  In the event of any
dispute  with  regard to the content of any  Election  Form,  the Parties  shall
attempt to resolve such dispute using good faith efforts.  If they have not done
so by the  thirtieth  day prior to the date the  Election  Form in  question  is
required to be filed,  the dispute shall be resolved by the Neutral Auditors (in
accordance  with  Section 9.5  hereto) at least five  business days prior to the
time the Election Form is required to be filed. Seller shall promptly deliver to
Buyer the  Election  Forms,  which shall have been  executed  by the  Authorized
Person.  Buyer shall then duly execute the Election  Forms or promptly cause the
Election  Forms to be duly  executed by the person  authorized  to execute  such
forms on behalf of Buyer and shall file the Election  Forms in  accordance  with
applicable Tax laws and the terms of this Agreement. Seller and Buyer shall take
or cause  to be taken  any  other  actions  that are  necessary  for  making  or
perfecting the Elections. Buyer shall provide Seller with a copy of the Election
Forms as filed. Seller and Buyer shall report all transactions  pursuant to this
Agreement for Tax purposes in a manner that is consistent  with the Elections in
all  jurisdictions  which recognize the  effectiveness  of the Elections for Tax
purposes  and shall take no  position  contrary  thereto  in such  jurisdictions
unless  required to do so pursuant  to a  "determination"  within the meaning of
Section 1313 of the Code or an analogous provision under state or local law.

<PAGE>

     Seller  will  pay  any  tax  attributable  to the  making  of  the  Section
338(h)(10)  election and will indemnify Buyer and Scanning against any liability
or expense  arising out of any failure to pay such tax. Seller will also pay any
state,  local or foreign  tax (and  indemnify  Buyer and  Scanning  against  any
liability or expense arising out of any failure to pay such tax) attributable to
an election under state,  local or foreign law similar to the election available
under  Section  338(g)  of the Code (or  which  results  from the  making  of an
election under Section 338(g) of the Code) with respect to the purchase and sale
of the stock of  Scanning  hereunder  where the state,  local,  or  foreign  tax
jurisdiction (i) does not provide or recognize a Section 338(h)(10)  election or
(ii) does not apply its provisions  corresponding  to Section  338(h)(10) of the
Code to the purchase  and sale of the stock of Scanning  (for  example,  because
Scanning files a separate company tax return in such jurisdiction).

     9.3 Refunds and Credits.

     (a)  Except as  otherwise  provided  in  Section  9.3(b),  Seller  shall be
entitled to any refund or credit  (including any refund or credit resulting from
a carry back of a net operating loss, net capital loss or tax credit) of federal
and foreign income Taxes, any state or local income or franchise Taxes,  Payroll
Taxes or state or local sales and use Taxes of Scanning and its Subsidiaries and
TxCom with  respect to any  taxable  period that ends on or prior to the Closing
Date,  except to the extent  such refund or credit is  reflected  on the Closing
Date Balance Sheet.

     Seller,  at its expense,  shall be responsible for filing and preparing any
Returns  (including  any  amended  Returns)  necessary  to obtain such refund or
credit. Buyer shall cooperate with Seller in connection with the preparation and
filing of such returns. Seller will indemnify Buyer for any penalty, interest or
costs incurred by Buyer that is attributable to such refund or credit.

<PAGE>

     (b) Where  permitted by applicable  Tax law, Buyer and Scanning shall elect
not to carry back any net  operating  loss,  net capital loss or tax credit that
arises in any taxable year ending after the Closing Date ("Carryback  Item"), to
a taxable year of any  consolidated,  combined or unitary  Returns  filed by, or
with  respect  to,  Scanning  that  ends on or before  the  Closing  Date.  If a
Carryback  Item of Buyer or Scanning  (or a successor to them) is required to be
carried back under  applicable  Tax law to a taxable  year of any  consolidated,
combined  or  unitary  Returns  filed by, or with  respec to,  Scanning,  and is
absorbed  or used in whole or in part in such  year,  Seller  shall pay Buyer an
amount  equal to any  refund  or credit  attributable  to such  Carryback  Item,
provided  that Seller  receives  such refund or realizes the benefit of any such
credit.  The amount of any such refund or credit  attributable  to the Carryback
Item  shall be equal to the  difference  between  the  amount of such  refund or
credit (net of any income taxes payable  thereon) with and without the Carryback
Item.  Amounts due  pursuant to this  paragraph  shall be paid in full within 30
days  after  Seller  receives  a  refund  or  credit.  If  a  refund  or  credit
attributable to a Carryback Item is later reduced (for example, as a result of a
reduction  in the amount of a  Carryback  Item  caused by an audit  adjustment),
Buyer  shall pay to Seller the amount of  such  reduction  including   statutory
interest by the due date of any required tax payment by Seller or, if no payment
is due,  within  30 days  after  the final  determination  of the  amount of the
reduction in such benefit.

     Seller shall be responsible  for preparing and filing (or arranging for the
preparation  and filing of) any Returns  required to carry back a Carryback Item
to a taxable year ending on or before the Closing  Date.  Buyer shall  reimburse
Seller for the reasonable  cost of preparation of any such Returns.  Buyer shall
indemnify  Seller for any penalty,  interest or costs incurred by Seller that is
attributable to Carryback Items.

     (c) Except as  otherwise  provided  in  Section 9.3(a),  Scanning  shall be
entitled to any other refunds or credits of its Taxes for all taxable periods.

     9.4 Tax  Sharing  Agreements.  Effective  as of the Closing  Date,  all tax
sharing  agreements  between  Scanning  and  any  member  of  any  consolidated,
combined,  or  unitary  group of which  Scanning  is a member on or  before  the
Closing Date shall be  terminated.  Neither  Scanning nor such member shall have
any current or continuing  obligations to or benefits from any other party under
such terminated agreements as of and after the Closing Date.

     9.5 Dispute  Resolution.  In the event of a dispute concerning this Article
IX, the  parties  shall  submit  such  dispute to the  Neutral  Auditors  (to be
selected in the same  manner as set forth under  Section  1.6(d)  hereto)  whose
decision  shall be binding on the parties.  The Neutral  Auditors'  fee shall be
borne equally by Buyer and Seller.

<PAGE>

                                    ARTICLE X

                                  MISCELLANEOUS

     10.1  Notices.  All  notices,  requests,  demands and other  communications
hereunder  shall be in  writing  and shall be deemed to have been duly  given if
personally  delivered or, if mailed,  three  business days after being mailed by
United States first-class,  certified or registered  mail, postage prepaid,  or,
if sent by overnight delivery by a nationally recognized courier such as Federal
Express,  one  business  day after  deposit  with such  courier,  or, if sent by
telecopy,  upon  confirmation  of receipt,  to the other party at the  following
addresses (or at such other address as shall be given in writing by any party to
the other):

            If to Seller Group to:

                  Spectra-Physics, Inc.
                  108 Webster Building
                  3411 Silverside Road
                  Wilmington, DE 19810
                  Telephone:  (302) 478-4600
                  Fax: (302) 478-8962
                  Attn:  Ms. Barbara Schoenberg

            With required copies to:

                  Spectra-Physics AB
                  Box 5226
                  Sturegatan 32
                  Fourth Floor
                  S-102 45 Stockholm, Sweden
                  Telephone:  011-468-783-0725
                  Fax:  011-468-660-9226
                  Attn:  Mr. Ulf Johansson

            and

                  Dechert Price & Rhoads
                  4000 Bell Atlantic Tower
                  1717 Arch Street
                  Philadelphia, PA 19103
                  Telephone:  (215) 994-2971
                  Fax:  (215) 994-2222
                  Attention:  Carmen J. Romano, Esquire

            If to Buyer Group, to:

                  PSC Inc.
                  675 Basket Road
                  Webster, NY 14580
                  Telephone:  (716) 265-1600
                  Fax: (716) 265-6402
                  Attention: William J. Woodard, Vice-President -
                  Finance

<PAGE>

            With required copies to:

                  Boylan, Brown, Code, Fowler, Vigdor
                    & Wilson, LLP
                  2400 Chase Square
                  Rochester, NY 14604
                  Telephone:  (716) 232-5300
                  Fax: (716) 232-3528
                  Attention: Martin S. Weingarten, Esq.

     10.2 Successors and Assigns;  Benefit.  This Agreement,  and all rights and
powers granted hereby,  will bind and inure to the benefit of the parties hereto
and their  respective  successors  and  assigns.  No party hereto may assign its
rights or delegate its duties and obligations  under this Agreement  without the
prior written consent of the other party hereto;  provided,  however, that Buyer
may assign its rights hereunder to a wholly-owned  Subsidiary of Buyer, provided
further  that  no  such  assignment  shall  limit  or  release  any  of  Buyer's
obligations  hereunder.  Except as provided in  Section 7.3  of this  Agreement,
nothing in this  Agreement,  express or  implied,  is  intended to confer on any
other  person other than the parties  hereto,  the Seller  Subsidiaries  and the
Buyer  Subsidiaries or their respective  successors and permitted  assigns,  any
rights,  remedies,  obligations  or  liabilities  under  or by  reason  of  this
Agreement.

     10.3 Public Announcements.  Prior to the Closing,  neither the Seller Group
nor the  Buyer  Group  shall  issue  any press  release  or public  announcement
regarding this Agreement or the transactions  contemplated  hereby except as and
to the extent that Buyer and Seller jointly agree, and except as any party shall
in the opinion of its counsel be  obligated  by  law,  rule or regulation of any
governmental or regulatory  body or stock exchange,  and in such event the party
issuing any release or public  announcement  or  disclosure  shall to the extent
practical,  give the other party reasonable prior notice of such announcement or
disclosure and a reasonable opportunity to comment thereon.

     10.4 Governing  Law. This  Agreement  shall be governed by and construed in
accordance with the laws of the State of New York.

     10.5  Headings.  The  headings  preceding  the  text  of the  sections  and
subsections hereto are inserted solely  for convenience of reference, and  shall
not  constitute  a part of this  Agreement,  nor shall they affect its  meaning,
construction or effect.

     10.6  Amendments.  No amendment to this Agreement shall be effective unless
it shall be in writing and signed by each of the parties  against which it is to
be enforced.

<PAGE>

     10.7 Limitation on Knowledge.  To the extent any representation or warranty
of Seller in this  Agreement  is  limited  to  "Seller's  knowledge"  or similar
language,  knowledge  shall be  limited to any facts or  circumstances  actually
known after  reasonable  investigation  by the individuals set forth on Schedule
10.7  hereto.  To the extent any  representation  or  warranty  of Buyer in this
Agreement is limited to "Buyer's knowledge" or similar language, knowledge shall
be  limited  to any  facts or  circumstances  actually  known  after  reasonable
investigation by any of the individuals set forth on Schedule 10.7 hereto.

     10.8 Foreign Sales Agreements and TxCom Agreement. Notwithstanding anything
to the contrary  contained in any of the Foreign  Sales  Agreements or the TxCom
Agreement to be executed and  delivered in  accordance  with Section  1.1(c) and
Section 1.1(d),  respectively,  of this Agreement, any "purchase price" referred
to in any such Foreign Sales Agreement or TxCom Agreement represents the portion
of the Purchase Price allocated to the assets and liabilities  being transferred
by the Seller  Subsidiary party to such Foreign Sales Agreement or by SP Holding
pursuant to the TxCom Agreement,  respectively,  and no amounts in excess of, or
less than, the Purchase Price shall be owed by Buyer as a result of the purchase
price specified in any Foreign Sales Agreement or TxCom Agreement.  The purchase
price  adjustment  contemplated  by the Foreign Sales  Agreements  and the TxCom
Agreement refer only to the adjustments to the purchase price referred to in the
appropriate  Foreign Sales Agreement or TxCom Agreement,  respectively,  if any,
necessary  as a result of the  finalization  of the  allocation  of the Purchase
Price in accordance with Section 1.7 of this Agreement,  and no amounts shall be
owed by the Buyer Group or the Seller Group as a result of any such adjustments.
Notwithstanding   anything  contained  in  this  Agreement,  the  Foreign  Sales
Agreements or the TxCom Agreement to the contrary,  nothing in the Foreign Sales
Agreements or the TxCom  Agreement  will be deemed to enlarge or diminish in any
way any of the  parties'  rights or  obligations  under this  Agreement.  To the
extent that any of the  provisions of the Foreign Sales  Agreements or the TxCom
Agreement are inconsistent with the provisions of this Agreement, the provisions
of this Agreement shall control. No party to any of the Foreign Sales Agreements
or the TxCom  Agreement  shall have any right to bring any claim  thereunder for
breach of the representations or warranties  contained therein.  That portion of
the Purchase Price allocated to the International  Assets transferred to a Buyer
Subsidiary from  Spectra-Physics K.K. shall be deemed to be paid in Japanese Yen
at the spot  price for  Japanese  Yen listed in the Wall  Street  Journal on the
Closing Date.

     10.9 Consent to  Jurisdiction.  Buyer and Seller each irrevocably submits
to the  exclusive  jurisdiction  of (a) the  courts  of the  State of New  York,
situated in the county of New York and (b)the United States  District  Court for
the Southern District of New York, for the purposes of any suit, action or other
proceeding  arising  out of or  related  to this  Agreement  or any  transaction
contemplated  hereby.  Buyer and Seller each hereby irrevocably  consents to the
<PAGE>


service of summons,  complaint  and any and all other process in any such action
or  proceeding  brought  in such  jurisdictions  within the State of New York by
delivery  of  copies  of  such  process  to it,  at  its  address  specified  in
Section 10.1  of this  Agreement  or by certified  mail direct to such  address.
Buyer and Seller each hereby  waives any  objection  that it may have based upon
lack of personal jurisdiction,  including,  without limitation, any objection to
the laying of venue or based on grounds  of forum non  conveniens,  which it may
now or hereafter  have to the bringing of any such action or  proceeding in such
jurisdiction.

     10.10 Post-Closing Access. Buyer and Seller shall reasonably cooperate with
each  other  after the  Closing so that  (subject  to any  limitations  that are
reasonably required to preserve any applicable  attorney-client  privilege) each
party has  access  to the  business  records,  contracts  and other  information
existing  at the  Closing  Date and  relating  to the  Business  (whether in the
possession  of Seller  Group,  Buyer Group,  Scanning or TxCom) as is reasonably
necessary for (a) the preparation for or the prosecution or defense of any suit,
action,  litigation  or  administrative,  arbitration  or  other  proceeding  or
investigation  (other  than one by or on  behalf  of a party  to this  Agreement
against  another party to this Agreement) by or against  Scanning,  TxCom or any
member of the Seller Group or Buyer Group, (b) the preparation and filing of any
Tax  Return or  election  relating  to the  Business  or any audit by any taxing
authority of any Returns of Scanning, TxCom or the Scanning Subsidiaries and (c)
the  preparation  and filing of any other  documents  required by any government
authority.  The party requesting such information and assistance shall reimburse
the other party for all out-of-pocket  costs and expenses incurred by such party
in providing such  information and in rendering such  assistance.  The access to
files,  books and records  contemplated  by this  Section  10.10 shall be during
normal  business  hours and upon not less than two business  days' prior written
request,  shall be subject to such  reasonable  limitations  as the party having
custody or  control  thereof  may  impose to  preserve  the  confidentiality  of
information  contained  therein,  and shall not extend to material  subject to a
claim of privilege  unless  expressly  waived by the party entitled to claim the
same.

     10.11  Regarding  Certain  Consents.  Nothing  in this  Agreement  shall be
construed  as an  attempt  by any  Seller  Subsidiary  to  assign  to the  Buyer
Subsidiaries  pursuant to this Agreement and/or the Foreign Sales Agreements any
contract,   agreement,  permit,  franchise,  claim  or  asset  included  in  the
International  Assets which is by its terms or by law nonassignable  without the
consent of any other party or parties,  unless  such  consent or approval  shall
have been given,  or as to which all the  remedies for the  enforcement  thereof
available  to  any  Seller  Subsidiary  would  not  by law  pass  to  the  Buyer
Subsidiaries as an incident of the assignments provided for by this Agreement (a
"Non-Assignable  Contract").  To the extent that any such consent or approval in
respect of, or a novation  of, a Non-  Assignable  Contract  shall not have been
obtained  on  or  before  the  Closing  Date,  Seller  shall  cause  the  Seller

<PAGE>

Subsidiaries  to use  reasonable  efforts  and to  cooperate  in any  reasonable
arrangement  to  assure  the  Buyer  Subsidiaries  the  benefits  of  such  Non-
Assignable  Contract  to the extent  permitted  by law.  To the  extent  lawful,
practicable and reasonable in the circumstances,  including the obtaining of any
such  necessary  consent or approval  after the Closing  (provided  that neither
Seller nor any Seller  Subsidiary  shall be  required  to pay any money or other
consideration or grant forbearances to any third party to effect such consent or
approval),  Seller at the request and under the  direction  of Buyer shall cause
the appropriate  Seller Subsidiary to take all reasonable actions to assure that
the rights of any Seller Subsidiary under the Non-Assignable  Contracts shall be
preserved for the benefit of the Buyer  Subsidiaries to the extent not involving
any undue hardships upon any Seller  Subsidiary or unreasonable time constraints
in the request or compliance with such  instructions.  Buyer shall indemnify and
hold harmless Seller Group for performing such  obligations and reimburse Seller
Group for its expenses related thereto.

     10.12 Further Assurances. Following the Closing, each party shall cooperate
with the other and execute and deliver,  or cause to be executed and  delivered,
all such  other  instruments,  including,  without  limitation,  instruments  of
conveyance,  assignment  and  transfer,  and take all such other  actions as may
reasonably be requested by the other party hereto from time to time,  consistent
with the terms of this  Agreement,  in order to effectuate  the  provisions  and
purposes of this Agreement.

     10.13  Preservation  of  Records  Information.  Buyer  will hold all of the
material  books and  records  of  Scanning,  TxCom,  and,  with  respect  to the
Business, the Seller Subsidiaries,  existing on the Closing Date and not destroy
or dispose of any thereto  for a period of seven  years from the  Closing  Date.
Seller  and  Seller  Subsidiaries  shall  preserve  and keep any such  books and
records it may retain with  respect to the  Business for a period of seven years
from the Closing Date.

     10.14  Further  Audit  Assistance.  Immediately  following  the Closing and
thereafter,  Seller  will use its  reasonable  best  efforts to cause  Coopers &
Lybrand L.L.P., its auditors,  at Buyer's expense, to continue to provide Arthur
Andersen  LLP with all such  information  and  assistance  with  respect  to the
Business' audited historical  financial  statements and quarterly financial data
as may reasonably be required by Arthur Andersen LLP,  including but not limited
to the furnishing of any opinion or consents  required for the inclusion of such
audited  financial  statements  in any filings under the  Securities  Act or the
Exchange Act by Buyer.
<PAGE>


     10.15 Specific  Performance.  Buyer and Seller each acknowledges and agrees
that the  other  party  would be  damaged  irreparably  in the  event any of the
provisions of this Agreement are not performed in accordance with their specific
terms or otherwise are breached. Accordingly, each of the parties agree that the
other  party  shall be  entitled  to an  injunction  or  injunctions  to prevent
breaches of the  provisions of this Agreement and to enforce  specifically  this
Agreement and the terms and provisions hereof in addition to any other remedy to
which they may be entitled, at law or in equity.

     10.16 Entire  Agreement.  This  Agreement  and the  Exhibits and  Schedules
hereto,  each of which is  hereby  incorporated  herein,  set  forth  all of the
promises, covenants, agreements, conditions and undertakings between the parties
hereto with respect to the subject  matter  hereof,  and supersede all prior and
contemporaneous agreements and undertakings,  inducements or conditions, express
or implied, oral or written, except the Confidentiality Agreement.

     IN WITNESS WHEREOF,  the parties hereto have executed this Agreement on the
day and year first above written.

                                          SPECTRA-PHYSICS, INC.


                                          By: /s/ Ulf Johansson
                                              Title:As Authorized Agent


                                          PSC Inc.


                                          By: /s/ L. Michael Hone
                                              Title:President, CEO, Chairman


                                          SPECTRA-PHYSICS HOLDING, S.A.


                                          By  /s/ Ulf Johansson
                                              Title: As Authorized Agent

<PAGE>





SPECTRA-PHYSICS, INC.                            SPECTRA-PHYSICS HOLDING, S.A.
108 Webster Building                                     Avenue de Scandanavie
3411 Silverside Road                                         ZA de Courtaboeuf
Wilmington, DE 19810                                            91940 Les Ulis


                                    July 12, 1996



PSC Inc.
675 Basket Road
Webster, NY 14580

Gentlemen:

     Reference is made to that certain Asset and Stock Purchase  Agreement dated
May 20, 1996, by and among PSC Inc., Spectra-Physics,  Inc., and Spectra-Physics
Holding, S.A. (the "Purchase Agreement"). Capitalized terms used but not defined
herein shall have the meaning ascribed to them in the Purchase Agreement.

     This is to  confirm  our  agreement  to amend  the  Purchase  Agreement  as
follows:

     1) Exhibit D, Terms of Note, to the Purchase  Agreement is amended so as to
read in its entirety as is set forth on Attachment A hereto.

     2) Exhibit F,  Purchase  Price  Allocation,  to the  Purchase  Agreement is
amended so as to read in its entirety as is set forth on Attachment B hereto.

     3) In addition to all amounts due under the  Purchase  Agreement,  PSC Inc.
shall pay to Seller on the date  hereof,  as  compensation  for the delay in the
Closing, the amount of $365,173.  Such amount shall be treated as an increase in
the Purchase Price and shall be wired to the account specified in paragraph 2 of
that certain letter regarding the Closing Cash Payment dated the date hereof.

     4) The number of Escrowed Shares shall be 315,789.


<PAGE>

     On behalf of PSC Inc.,  please  confirm that the foregoing  correctly  sets
forth our agreement by signing below.

                                    Sincerely,
 
                                    SPECTRA-PHYSICS, INC.


                                    By:    /s/ Lennart Rappe
                                    Name:  Lennart Rappe
                                    Title: Authorized Representative


                                    SPECTRA-PHYSICS HOLDING, S.A.


                                    By:    /s/ Lennart Rappe
                                    Name:  Lennart Rappe
                                    Title: Authorized Representative


The undersigned hereby agrees with the foregoing:


PSC INC.


By:    /s/ William J. Woodard
Name:  William J. Woodard
Title: Vice President - Finance

<PAGE>

                                 Attachment A

                                                                     Exhibit D

                                 Terms Of Note


Issuer:           The Note will be issued by the purchaser of the U.S. Assets
                  and be guaranteed by PSC Inc.


Amount:           U.S. $5,000,000

Optional          Prepayable in whole or in part at any time without
                  Prepayment:premium or penalty

Maturity:         5 years after Closing Date

Amortization:     Principal payable in 16 equal consecutive quarterly
                  installments of $312,500 each commencing 15 months after
                  Closing

Interest:         Interest payable quarterly at 100 basis points in excess of
                  the rate of interest announced from time to time by
                  CoreStates Bank as its base or prime rate

Other:            The Note will have the same covenants, events of default,
                  subordination and other provisions as are set forth in the
                  subordinated loan agreement and related note contemplated
                  by the Subordinated Debt Commitment Letters referred to in
                  Section 3.1(q) of the Agreement (the "Subordinated Loan
                  Agreement"); provided that the Note will be subordinated to
                  the indebtedness under the Subordinated Loan Agreement to
                  the same extent that such indebtedness is subordinated to
                  the senior secured bank financing contemplated by the
                  commitment letter between Fleet National Bank and PSC Inc.
                  referred to in Section 3.1(q) of the Agreement.



<PAGE>

                                 Attachment B


                                   Exhibit F

                           Purchase Price Allocation


            The Purchase Price shall be allocated as follows:

                  (a)   The Note shall be allocated to the U.S. Assets.

                  (b)   The Buyer Stock shall be allocated to the Shares.

                  (c)   The balance of the Purchase Price shall be allocated:

                        (i)   First, to the Non-Compete Agreement in the
                              amount of US $5,000,000.

                        (ii)  Next, to the International Assets of each
                              Seller Subsidiary in an amount equal to the
                              Assumed International Liabilities of such
                              Seller Subsidiary plus 105% (150% in the case
                              of Spectra-Physics GmbH) of the aggregate net
                              book value of the International Assets and
                              Assumed International Liabilities of such
                              Seller Subsidiary (i.e., book value of such
                              assets minus liabilities) at the Closing Date,
                              in each case as reflected in the Closing Date
                              Balance Sheet; provided, however, that the
                              premium over book value in the case of
                              Spectra-Physics S.r.l. shall equal US $300,000.

                      (iii)   Next, to the TxCom Shares and the TxCom Rights,
                              in an amount equal to US $14,050,000.

                      (iv)    Lastly, to the Shares.

            Within 30 days after the determination of the Closing Date
Balance Sheet, Scanning shall prepare and submit to Seller and Buyer a
statement allocating the Purchase Price, which statement shall be prepared in
accordance with the allocation set forth above.





                                                               Exhibit 3.1


                                State of Delaware

                        Office of the Secretary of State



     I, EDWARD J. FREEL,  SECRETARY  OF THE STATE OF THE STATE OF  DELAWARE,  DO
HEREBY  CERTIFY THE  ATTACHED IS A TRUE AND CORRECT COPY OF THE  CERTIFICATE  OF
MERGER, WHICH MERGES:

         "PSC ACQUISITION, INC.," A DELAWARE CORPORATION,

     WITH AND INTO  "SPECTRA-PHYSICS  SCANNING SYSTEMS,  INC." UNDER THE NAME OF
"SPECTRASCAN,  INC.", A CORPORATION ORGANIZED AND EXISTING UNDER THE LAWS OF THE
STATE OF DELAWARE, AS RECEIVED AND FILED IN THIS OFFICE THE TWELFTH DAY OF JULY,
A.D. 1996, AT 9 O'CLOCK A.M.

     A CERTIFIED COPY OF THIS  CERTIFICATE  HAS BEEN FORWARDED TO THE NEW CASTLE
COUNTY RECORDER OF DEEDS FOR RECORDING.




                                             /s/      Edward J. Freel
                                                      Edward J. Freel
                                                      Secretary of State

2246198  8100M                                       Authentication:   8024599
960203468                                                     Date:    07-12-96


<PAGE>

                              CERTIFICATE OF MERGER
                                       OF
                              PSC ACQUISITION, INC.
                                      INTO
                     SPECTRA-PHYSICS SCANNING SYSTEMS, INC.

     We, the  undersigned,  being  respectively  the  Chairman  of the Board and
Secretary of  Spectra-Physics  Scanning  Systems,  Inc.,  and the  President and
Secretary of PSC Acquisition, Inc., hereby certify:

     1.  That  the  name  of  each   constituent   corporation  is  as  follows:
Spectra-Physics  Scanning  Systems,  Inc.,  a  Delaware  corporation,   and  PSC
Acquisition, Inc., a Delaware corporation.

     2. That a Plan and  Agreement  of Merger  between the parties to the merger
has been approved, adopted, certified,  executed and acknowledged by each of the
constituent  corporations in accordance with the  requirements of subsection (c)
of Section 251 of the General Corporation law of the State of Delaware.

     3.  That  the  name  of  the  surviving   corporation  of  the  merger  is:
Spectra-Physics Scanning Systems, Inc.

     4. That an amendment with respect to the name of  Spectra-Physics  Scanning
Systems,   Inc.,  which  is  the  surviving  corporation  shall  be  changed  to
SPECTRASCAN, INC.

     5.  That  the  executed  Plan and  Agreement  of  Merger  is on file at the
principal  place of business of the  surviving  corporation.  The address of the
principal  place of business of the surviving  corporation  is 959 Terry Street,
Eugene, Oregon 97402-9120.

     6. That a copy of the Plan and Agreement of Merger will be furnished by the
surviving  corporation,  on request and without cost, to any  stockholder of any
constituent corporation.


<PAGE>

     IN WITNESS WHEREOF,  we have signed this Certificate this 12th day of July,
1996,  and hereby  affirm the truth of the  statements  contained  herein  under
penalty of perjury.


                SPECTRA-PHYSICS SCANNING SYSTEMS, INC.

                By:      /s/      L. Michael Hone
                                  L. Michael Hone, Chairman of the Board

                Attest:  /s/      Martin S. Weingarten
                                  Martin S. Weingarten, Secretary


                PSC ACQUISITION, INC.

                By:      /s/      L. Michael Hone
                                  L. Michael Hone, President

                Attest:  /s/      Martin S. Weingarten
                                  Martin S. Weingarten, Secretary





                                                                 Exhibit 4.1

THIS NOTE HAS NOT BEEN REGISTERED UNDER THE SECURITIES ACT OF
1933, AS AMENDED, AND MAY NOT BE TRANSFERRED IN THE ABSENCE
OF REGISTRATION THEREUNDER ON AN EXEMPTION THEREFROM.

                                SPECTRASCAN, INC.

               11.25% Senior Subordinated Note due June 30, 2006


No. R-  
$                     


     SPECTRASCAN,  INC.,  a  Delaware  corporation  (the  "Company"),  for value
received,  hereby  promises to pay to , or  registered  assigns,  the  principal
amount of DOLLARS ($_____________ ) on June 30, 2006, with interest (computed on
the basis of a 360-day year of twelve  30-day  months) on the unpaid  balance of
such  principal  amount at the rate of 11.25%  per annum  from the date  hereof,
payable  quarterly on each March 31, June 30, September 30 and December 31 after
the date hereof,

<PAGE>


commencing on [September 30,  1996/the first such date next  succeeding the date
hereof],  until the principal  hereof shall have become due and payable (whether
at maturity or at a date fixed for  prepayment or by  declaration or otherwise),
and with interest on any overdue principal  (including any overdue prepayment of
principal) and (to the extent permitted by applicable law) premium,  if any, and
(to the extent  permitted  by  applicable  law) on any  overdue  installment  of
interest,  at the rate of 13.25% per annum  until  paid,  payable  quarterly  as
aforesaid  or,  at  the  option  of the  holder  hereof,  on  demand  and,  upon
acceleration of this Note,  together with the Make Whole Amount specified in the
Securities  Purchase Agreements  hereinafter  referred to, as liquidated damages
and not as a penalty;  provided that in no event shall the amount payable by the
Company as interest  and  premium on this Note  exceed the  highest  lawful rate
permissible under any law applicable hereto. Payments of principal,  premium, if
any, and interest  hereon shall be made in lawful money of the United  States of
America by the method  and at the  address  for such  purpose  specified  in the
Securities Purchase Agreements  hereinafter referred to, and such payments shall
be overdue  for  purposes  hereof if not made on the  scheduled  date of payment
therefor,   without   giving   effect  to  any   applicable   grace  period  and
notwithstanding  that  such  payment  may  be  prohibited  under  the  terms  of
subordination applicable hereto set forth below.

     This Note is one of the  Company's  11.25%  Senior  Subordinated  Notes due
June 30,  2006,    limited to $30,000,000  aggregate  principal  amount,  issued
pursuant to those certain Securities Purchase  Agreements dated July 12,    1996
(such agreements,  as amended,  modified and supplemented from time to time, the
"Securities   Purchase   Agreements")  among  the  Company,  PSC  Inc.  and  the
institutional  investors named therein, and the holder hereof is entitled to the
benefits of the Securities Purchase Agreements and the other Operative Documents
referred  to  in  the  Securities  Purchase   Agreements,   including,   without
limitation, the Note Guarantees, and may enforce the agreements contained herein
and  therein  and  exercise  the  remedies  provided  for hereby and  thereby or
otherwise  available in respect hereof and thereof,  all in accordance  with the
terms hereof and thereof. This Note is subject to prepayment as specified in the
Securities Purchase Agreements. Capitalized terms used herein without definition
have the meanings ascribed to them in the Securities Purchase Agreements.

     Payments  on this Note are  subordinate  to  Superior  Indebtedness  to the
extent and in the manner  specified  in  section 10 of the  Securities  Purchase
Agreements.

     This  Note is in  registered  form and is  transferable  only by  surrender
hereof at the  principal  executive  office of the  Company as  provided  in the
Securities Purchase  Agreements.  The Company may treat the Person in whose name
this Note is registered on the Note register  maintained at such office pursuant
to the Securities Purchase Agreements as the owner hereof for all purposes,  and
the Company shall not be affected by any notice to the contrary.

     In case an Event of  Default  shall  occur and be  continuing,  the  unpaid
balance of the principal of this Note may be declared and become due and payable
in  the  manner  and  with  the  effect  provided  in  the  Securities  Purchase
Agreements.

     The parties hereto, including the maker and all guarantors and endorsers of
this Note,  hereby  waive  presentment,  demand,  notice,  protest and all other
demands and notices in connection with the delivery, acceptance,  performance or
enforcement of this Note.

     This  Note  shall be  construed  in  accordance  with and  governed  by the
domestic  substantive laws of the State of New York without giving effect to any
choice  of law or  conflicts  of law  provision  or rule  that  would  cause the
application of domestic substantive laws of any other jurisdiction.


          [The remainder of this page is left blank intentionally.]

<PAGE>

      IN WITNESS WHEREOF, the Company has executed this Note as an instrument
under seal as of the date first above written.

                                         SPECTRASCAN, INC.



                                         By /s/ William J. Woodard
                                                William J. Woodard
                                                Vice President



<PAGE>

                            FORM OF ASSIGNMENT

                 [To be signed only upon transfer of Note]

     For value  received,  the undersigned  hereby sells,  assigns and transfers
unto     __________________________________     the     within     Note,     and
appoints______________   Attorney  to  transfer   such  Note  on  the  books  of
SPECTRASCAN, INC. with full power of substitution in the premises.

Date:                ,     .



                                ...............................................
                                (Signature must conform in all respects to name
                                of holder as specified on the face of the Note)


Signed in the presence of



 .............................



                                                                Exhibit 4.2


                                 Note Guarantee

                               dated July 12, 1996


     Reference is hereby made to those certain  Securities  Purchase  Agreements
dated July 12, 1996 (as the same may be amended,  modified or supplemented  from
time to time, the "Securities Purchase  Agreements") among SpectraScan,  Inc., a
Delaware corporation (the "Operating Company"), PSC Inc., a New York corporation
(the "Holding  Company"),  and the  institutional  investors named therein.  The
Operating  Company  and the  Holding  Company  are  referred  to  herein  as the
"Companies"  and each as a  "Company".  Capitalized  terms used  herein  without
definition  have  the  meanings  ascribed  to  them in the  Securities  Purchase
Agreements.

     The undersigned (the "Guarantor"),  for value received,  hereby irrevocably
and  unconditionally  guarantees the due and punctual payment and performance of
the following obligations (each, a "Guaranteed Obligation" and collectively, the
"Guaranteed  Obligations")  when and as the same shall become due and payable in
accordance  with the terms  thereof,  as the same may be  amended,  modified  or
supplemented from time to time:

          (a) the due and  punctual  payment  of the  principal  of and  premium
     (including,  without  limitation,  the  Applicable  Premiums),  if any, and
     interest on (including any interest  accruing after the commencement of any
     action or proceeding under the federal bankruptcy laws, as now or hereafter
     constituted,  or any other applicable  domestic or foreign federal or state
     bankruptcy,  insolvency or other  similar law, and any other  interest that
     would have accrued but for the commencement of such proceeding,  whether or
     not any  such  interest  is  allowed  as an  enforceable  claim in any such
     proceeding)  and fees and other amounts  payable with respect to the Notes;
     and

          (b) the due and punctual  payment and performance of any and all other
     indebtedness  and  obligations  of  either  Company  under  the  Securities
     Purchase Agreements or otherwise arising under or referred to in any of the
     other Operative  Documents,  all as amended,  modified or supplemented from
     time to time,  including,  without  limitation,  the payment of all amounts
     required  to be paid under  sections 21 and 22 of the  Securities  Purchase
     Agreements or under any other  provision of any of the Operative  Documents
     relating to indemnification, reimbursement of expenses and the like.

     The Guarantor  hereby agrees that the  Guarantor's  liability  hereunder is
joint and several  with any other  Person(s)  (the "Other  Guarantors")  who may
guarantee the Guaranteed Obligations or any part thereof. 
<PAGE>


     Notwithstanding  anything to the contrary  herein,  the  obligations of the
Guarantor under this Note Guarantee are subordinated to Superior Indebtedness to
the extent and in the manner specified in the Securities Purchase Agreements.

     This Note Guarantee is an absolute,  primary,  unconditional,  irrevocable,
present  and  continuing  guarantee  of payment  (and not of  collectibility  or
performance  only),  is not  subject  to any  counterclaim,  setoff,  deduction,
withholding, diminution, abatement, recoupment, suspension, deferment, reduction
or  defense  and is in no way  conditioned  or  contingent  upon any  attempt to
collect  from the  applicable  Company or any Other  Guarantor or upon any other
condition  or  contingency;  if the  applicable  Company  shall  fail  so to pay
punctually the principal of, or the premium, if any, interest or other amount on
any Guaranteed  Obligation,  the Guarantor will  immediately pay the same to the
holder thereof, with interest (to the extent permitted by applicable law) on any
overdue  amount,  at a rate per  annum  equal to 2% above the  non-default  rate
otherwise applicable thereto, until paid and, upon any acceleration of any Note,
with the  applicable  premium,  if any,  specified  in the  Securities  Purchase
Agreements,  as  liquidated  damages and not as a penalty.  Payments  due on the
Guaranteed  Obligations  shall be overdue for purposes hereof if not made on the
originally  scheduled  date of payment  therefor,  without  giving effect to any
applicable  grace period.  Payments by the Guarantor  hereunder shall be made in
lawful  money of the United  States of America and may be required by any holder
of any Guaranteed Obligation on any number of occasions.

     This Note  Guarantee  shall remain in full force and effect  without regard
to, and the  obligations  of the  Guarantor  hereunder  shall not be affected or
impaired by: (a) any  amendment or  modification  of or supplement to any of the
Operative Documents, including, without limitation, any amendment,  modification
and/or  supplement  which  changes  the  timing  or amount  of any  payment  (or
prepayment) of the principal of or premium, if any, or interest on, or any other
terms of  payment  of, any of the  Guaranteed  Obligations;  (b) any  extension,
indulgence  or other  action or  inaction  in  respect  of any of the  Operative
Documents;  (c) any  default  by  either  Company,  the  Guarantor  or any Other
Guarantor under, or any invalidity or  unenforceability  of, or any irregularity
or  other  defect  in,  any of the  Operative  Documents;  (d) any  exercise  or
non-exercise of any right,  remedy,  power or privilege in respect of any of the
Operative  Documents;  (e) any  transfer  of the assets of either  Company,  the
Guarantor or any Other  Guarantor to, or any  consolidation  or merger of either
Company,  the Guarantor or any Other  Guarantor  with or into, any other Person;
(f) any bankruptcy,  insolvency,  reorganization or similar proceeding involving
or affecting  either  Company,  the  Guarantor or any Other  Guarantor;  (g) any
change in or  addition  to or partial  or  complete  release  of any  collateral
securing the Guaranteed  Obligations  or any partial or complete  release of any
Other  Guarantor  or  other  Person  primarily  or  secondarily  liable  for the
Guaranteed Obligations; (h) any change of circumstances, whether or not foreseen
or foreseeable,  or any  impossibility  of performance,  whether through acts of

<PAGE>

God, action of any governmental  authority or agency, change of law, other force
majeure or otherwise,  whether or not beyond the control of either Company,  the
Guarantor,  any Other Guarantor or any other Person; (i) any attachment,  claim,
demand,  charge,  Lien,  order,  process,  encumbrance or any other happening or
event or reason,  or any  withholding or diminution at the source,  by reason of
any taxes, assessments,  expenses,  obligations or liabilities of any character,
foreseen or  unforeseen,  and  whether or not valid,  incurred by or against any
Person,  or any claims,  demands,  charges or Liens of any  nature,  foreseen or
unforeseen, incurred by any Person, or against any sums payable under any of the
Operative Documents,  so that such sums would be rendered inadequate or would be
unavailable  to make the  payments  therein  provided;  (j) the  failure  of the
Guarantor  to receive  any benefit or  consideration  from or as a result of its
execution,  delivery  and  performance  of this Note  Guarantee or (k) any other
circumstance  or cause,  whether  similar or dissimilar to any of the foregoing,
that might constitute a legal or equitable discharge or defense of the Guarantor
and whether or not the Guarantor shall have had notice or knowledge thereof,  it
being agreed by the  Guarantor  that for the  purposes  hereof,  the  Guaranteed
Obligations  shall be due and  payable  when and as the  Guaranteed  Obligations
shall be due and payable in accordance  with the terms  thereof  notwithstanding
that  collection or enforcement  thereof may be stayed or enjoined under any law
or may otherwise be impossible and notwithstanding that the Notes may then be or
have become invalid, void or voidable for any reason.

     The Guarantor hereby acknowledges receipt of a correct and complete copy of
each of the Operative  Documents and consents to all of the terms and provisions
thereof,  as the same may be from time to time  hereafter  amended,  modified or
supplemented,  and waives (a)  presentment,  demand for payment,  and protest of
non-payment, of any principal of or premium, if any, interest or other amount on
any Guaranteed  Obligation;  (b) notice of acceptance of this Note Guarantee and
of presentment,  demand, and intent to accelerate and protest; (c) notice of any
default under any of the  Operative  Documents or any other  agreement  relating
thereto; (d) demand for performance or observance of, and any enforcement of any
provisions  of, or any pursuit or exhaustion  of rights or remedies  against the
Companies,  the Guarantor,  any other Guarantor or any other Person under any of
the Operative  Documents and any  requirements of diligence or promptness on the
part of any holder of any Guaranteed Obligation in connection therewith; and (e)
to the extent the  Guarantor  lawfully may do so, any and all other  demands and
notices of every kind and description with respect to the foregoing or which may
be  required to be given by any  statute,  or rule of law and any defense of any
kind  (other  than the  defense  of  payment)  which  the  Guarantor  may now or
hereafter  have with  respect  to any of the  Operative  Documents  or any other
agreement relating thereto. Without limiting the generality of the foregoing, no
Person who is entitled to the benefits of this Note Guarantee  shall be required
to make any demand  upon,  or to pursue or exhaust any of its rights or remedies
against,  either  Company,  any  Other  Guarantor  or any  other  Person  or any
collateral or other security,  prior to exercising any right  hereunder,  and no
delay or omission on the part of any such Person in  exercising  any right under

<PAGE>

any of the Operative  Documents or any other  agreement  relating  thereto shall
operate as a waiver or relinquishment of such right.

     The Guarantor  hereby grants each holder of any  Guaranteed  Obligation the
full power in the uncontrolled  discretion of such holder, without notice to the
Guarantor and without in any way affecting the liability of the Guarantor  under
this Note Guarantee:  (a) to waive compliance with and any default under, and to
consent  to any  amendment  or  change  of  any  terms  of any of the  Operative
Documents  and  any  other  agreement  relating  thereto,   including,   without
limitation, any change in the timing or amount of any payment (or prepayment) of
the  principal  of or premium,  if any,  or  interest  on, or any other terms of
payment of, any of the Guaranteed  Obligations;  and (b) to grant  extensions or
renewals  thereof and other  indulgences  with  respect  thereto,  and to effect
releases, compromises or settlements with respect thereto.

     The  Guarantor  hereby  covenants  and agrees  that,  until the  Guaranteed
Obligations  are  indefeasibly  paid in full in  cash,  the  Guarantor  will not
enforce  or  otherwise  exercise  any  rights  of  reimbursement,   subrogation,
contribution  or other similar rights against each Company,  any Other Guarantor
or any other Person with respect to any Guaranteed Obligation or otherwise.

     The Guarantor will  reimburse each holder of any Guaranteed  Obligation for
all  costs  of  collection  or  enforcement   (including,   without  limitation,
reasonable  attorneys'  fees and expenses)  incurred by such holder in enforcing
the obligations of the Guarantor hereunder.

     This Note Guarantee shall continue to be effective or be reinstated, as the
case  may be,  if at any time  any  amount  received  in  respect  of any of the
Operative  Documents is  rescinded or must  otherwise be restored or returned by
the payee thereof upon the insolvency, bankruptcy,  dissolution,  liquidation or
reorganization  of either Company,  the Guarantor or any Other Guarantor or upon
the  appointment  of any  receiver  or  conservator  of, or  trustee  or similar
official  for,  either  Company,  the  Guarantor  or any Other  Guarantor or any
substantial part of the properties of either Company, the Guarantor or any Other
Guarantor, or otherwise, all as though such payment had not been made.

     No amendment or waiver of any  provision of this Note  Guarantee or consent
to any default  under,  breach of or departure  from this Note  Guarantee by the
Guarantor  shall in any event be  effective  unless the same shall be in writing
and signed by the  Guarantor and the Required  Holders of the  Securities at the
time  outstanding and then such waiver or consent shall be effective only in the
specific instance and for the specific purpose for which given.

<PAGE>

     All notices and other  communications under this Note Guarantee shall be in
writing and shall be addressed and  delivered or mailed in  accordance  with the
provisions of section 23 of the Securities Purchase Agreements.

     This Note  Guarantee,  including  the  validity  hereof  and the rights and
obligations arising hereunder, and all amendments and supplements hereof and all
waivers  and  consents  hereunder  shall be  construed  in  accordance  with and
governed  by the  domestic  substantive  laws of the  State of New York  without
giving  effect to any choice of law or conflicts  of law  provision or rule that
would  cause  the  application  of the  domestic  substantive  laws of any other
jurisdiction.  The  Guarantor,  to the extent that the Guarantor may lawfully do
so, hereby  consents to service of process,  and to be sued, in the State of New
York and in The Commonwealth of  Massachusetts  and consents to the jurisdiction
of the courts of the State of New York and of The  Commonwealth of Massachusetts
and of the United States  District  Court for the Southern  District of New York
and for the District of  Massachusetts,  as well as to the  jurisdiction  of all
courts to which an appeal may be taken from such courts,  for the purpose of any
suit,  action  or  other  proceeding  arising  out of  any  of  the  Guarantor's
obligations hereunder, and expressly waives any and all objections the Guarantor
may have as to venue in any such courts.  The  Guarantor  further  agrees that a
summons and  complaint  commencing an action or proceeding in any of such courts
shall be  properly  served  and shall  confer  personal  jurisdiction  if served
personally or by certified mail to the Guarantor in care of the Companies at the
address of the  Companies  set forth in section  23 of the  Securities  Purchase
Agreements or as otherwise  provided  under the laws of the State of New York or
The  Commonwealth  of  Massachusetts,  as the case may be.  Notwithstanding  the
foregoing, the Guarantor agrees that nothing contained herein shall preclude the
institution  of any such suit,  action or other  proceeding in any  jurisdiction
other than the State of New York or The Commonwealth of Massachusetts.

     THE GUARANTOR  IRREVOCABLY WAIVES ALL RIGHT TO A TRIAL BY JURY IN ANY SUIT,
ACTION OR OTHER PROCEEDING  INSTITUTED BY OR AGAINST THE GUARANTOR IN RESPECT OF
THE GUARANTOR'S OBLIGATIONS HEREUNDER.

     This Note Guarantee (together with the other Operative  Documents) embodies
the entire agreement and understanding  between the Guarantor and the holders of
the   Guaranteed   Obligations   and   supersedes   all  prior   agreements  and
understandings  relating to the subject matter hereof.  In case any provision in
this Note Guarantee or any of the other  Operative  Documents  shall be invalid,
illegal or  unenforceable,  the  validity,  legality and  enforceability  of the
remaining  provisions  hereof and  thereof  shall not in any way be  affected or
impaired thereby.
<PAGE>

     All or any of the  rights  of each  holder  of any  Guaranteed  Obligations
hereunder may be  transferred  or assigned at any time and shall be  transferred
and assigned  upon the  transfer of any  Guaranteed  Obligation  whether with or
without the consent of or notice to the Guarantor.


         [The remainder of this page is left blank intentionally.]


<PAGE>

      IN WITNESS WHEREOF, the Guarantor has executed this Note Guarantee as
an instrument under seal as of the date first above written.


                                         



                                         By: /s/ William J. Woodard  
                                                 William J. Woodard
                                                 Vice President, Finance
                                                  and Treasurer
                                                 (Title)







                                                                  Exhibit 4.3

___________________________________________________________________________
___________________________________________________________________________














                                    WARRANT



                      To Purchase Shares of Common Stock,
                              $0.01 par value, of



                                   PSC INC.













                             July 12, 1996



___________________________________________________________________________
___________________________________________________________________________

                                 Exhibit 1(b)
 
<PAGE>

                               TABLE OF CONTENTS

                                                                          Page

1.    Definitions............................................................1

      1.1.  Definitions of Terms.............................................1
      1.2.  Other Definitions................................................4

2.    Exercise of Warrant....................................................4

      2.1.  Right to Exercise; Notice........................................4
      2.2.  Manner of Exercise; Issuance of Common Stock.....................4
      2.3.  Effectiveness of Exercise........................................5
      2.4.  Fractional Shares................................................5
      2.5.  Continued Validity...............................................6

3.    Registration, Transfer, Exchange and Replacement of Securities; Legends6

      3.1.  Registration, Transfer, Exchange and Replacement of Securities...6
      3.2.  Legends..........................................................6

4.    Anti-Dilution Provisions...............................................7

      4.1.  Adjustment of Number of Shares Purchasable.......................7
      4.2.  Adjustment of Exercise Price.....................................7
      4.3.  Rights Offering.................................................13
      4.4.  Certificates and Notices........................................14
      4.5.  Adjustments for Changes in Certain Data.........................15

5.    Repurchase; Registration, etc.........................................15

6.    Reservation of Common Stock...........................................15

7.    Various Covenants of the Company......................................16

      7.1.  No Impairment or Amendment......................................16
      7.2.  Listing on Securities Exchanges, etc............................16
      7.3.  Anti-Dilution Provisions........................................16
      7.4.  Indemnification.................................................16
      7.5.  Certain Expenses................................................17

8.    Miscellaneous.........................................................17

      8.1.  Nonwaiver.......................................................17

<PAGE>

      8.2.  Amendment.......................................................17
      8.3.  Communications..................................................17
      8.4.  Like Tenor......................................................17
      8.5.  Remedies........................................................17
      8.6.  Successors and Assigns..........................................18
      8.7.  Governing Law...................................................18
      8.8.  Headings; Entire Agreement; Partial Invalidity, etc.............18


Form of Notice of Exercise
Form of Assignment

<PAGE>

THIS   WARRANT  HAS  NOT  BEEN   REGISTERED   UNDER  THE   SECURITIES   ACT
OF  1933,   AS  AMENDED  AND  MAY  NOT  BE   TRANSFERRED   IN  THE  ABSENCE
OF REGISTRATION THEREUNDER OR AN EXEMPTION THEREFROM

                                  WARRANT

          To Purchase Shares of Common Stock, $0.01 par value, of


                                 PSC INC.

No. RW-                                                      July 12, 1996

     THIS IS TO CERTIFY that, for value received,  , or registered  assigns,  is
entitled upon the due exercise  hereof at any time during the Exercise Period to
purchase [ ] shares of Common  Stock of PSC Inc.,  a New York  corporation  (the
"Company"),  at an Exercise  Price of $9.476 per share (such  Exercise Price and
the number of shares of Common  Stock  purchasable  hereunder  being  subject to
adjustment as provided  herein),  and to exercise the other  rights,  powers and
privileges  hereinafter provided, all on the terms and subject to the conditions
hereinafter set forth.

     This Warrant is one of the Company's  Warrants to Purchase Shares of Common
Stock  (herein,  together  with any  warrants  issued in  exchange  therefor  or
replacement  thereof,  all as amended or supplemented  from time to time, called
the "Warrants")  initially  exercisable in the aggregate for 975,000 (subject to
adjustment)  shares of Common Stock of the Company and issued  pursuant to those
certain Securities Purchase Agreements, dated the Closing Date, by and among the
Company,  SpectraScan,  Inc. and the  institutional  investors named therein (as
amended,  modified and supplemented from time to time, the "Securities  Purchase
Agreements"). Reference is hereby made to the Securities Purchase Agreements for
a description of, among other things, certain terms relating to the Warrants and
the Warrant  Shares and certain  rights of the holders  thereof,  including  the
right to require the  repurchase  of the Warrants  and the Warrant  Shares under
certain circumstances. Holders of Warrants and/or Warrant Shares are entitled to
the  applicable  benefits of the  Securities  Purchase  Agreements and the other
Operative Documents and may enforce the applicable agreements contained therein,
all in accordance  with and subject to the terms  thereof,  notwithstanding  any
payment  or  prepayment  or  redemption  or  acquisition  of any  of  the  other
Securities issued pursuant to the Securities Purchase Agreements.

1.    Definitions.

     1.1.  Definitions of Terms. The following terms have the meanings  ascribed
to them in the  Securities  Purchase  Agreements,  unless  the  context  clearly
requires otherwise: "corporation",  "Notes", "Officers' Certificate", "Operative

<PAGE>

Documents",  "Person", "Preferred Shares", "Required Holders", "Securities Act",
"shares" and  "Subsidiary".  In addition,  the terms  defined in this section 1,
whenever  used and  capitalized  in this  Warrant,  shall,  unless  the  context
otherwise requires, have the following respective meanings:

     "Assignment" shall mean the form of Assignment appearing at the end of this
Warrant.

     "Closing Date" shall mean July 12, 1996.

     "Common Stock" shall mean the Common Stock, $0.01 par value, of the Company
as  constituted  on the Closing  Date and any stock into which such Common Stock
shall have been changed or any stock resulting from any reclassification of such
Common Stock.

     "Company"  shall mean PSC Inc., a New York  corporation,  and any successor
corporation.

     "Convertible  Securities"  shall mean  evidences  of  indebtedness,  shares
(including,  without limitation,  Preferred Shares) of stock or other securities
which are convertible  into or exchangeable or exercisable  for, with or without
payment of additional consideration,  shares of Common Stock, either immediately
or upon the arrival of a specified date or the happening of a specified event.

     "Current  Market  Price" of any  security as of any date  herein  specified
shall  mean the  average  of the daily  closing  prices  for the 30  consecutive
trading  days  commencing  45 trading days before the day in question (or in the
event that a security has been traded for less than 45 days, each of the trading
days on which such  security has been  traded).  The closing  price for each day
shall be (a) if such  security is listed or admitted for trading on any national
securities exchange,  the last sale price of such security,  regular way, or the
average of the closing bid and asked prices thereof if no such sale occurred, in
each case as officially  reported on the principal  securities exchange on which
such security is listed,  or (b) if not reported as described in clause (a), the
average  of  the  closing  bid  and  asked  prices  of  such   security  in  the
over-the-counter  market  as shown by the  National  Association  of  Securities
Dealers,  Inc.  Automated  Quotation  System,  if so quoted,  as reported by any
member  firm of the New York Stock  Exchange  selected by the  Company.  If such
security is quoted on a national  securities or central market system in lieu of
a market or  quotation  system  described  above,  the  closing  price  shall be
determined  in the manner set forth in clause (a) of the  preceding  sentence if
actual  transactions  are  reported and in the manner set forth in clause (b) of
the  preceding  sentence  if bid  and  asked  prices  are  reported  but  actual
transactions are not.

     "Exercise  Price"  shall mean the price per share of Common Stock set forth
in the  preamble  to this  Warrant,  as such price may be  adjusted  pursuant to
section 4.
<PAGE>


     "Exercise  Period" shall mean the period  commencing on July 12,  1997 and
terminating at 5:00 p.m. Boston time on July 12, 2006.

     "Fair  Value"  shall  mean the  fair  value  of the  appropriate  security,
property,  assets,  business or entity as determined by an independent appraiser
of  recognized  national  standing  (selected  by  the  Company  and  reasonably
satisfactory  to the  Required  Holders  of  the  Warrants),  in  each  case  in
accordance  with  generally  accepted  financial  practice,  [provided  that the
determination of the Fair Value of any security shall be made without applying a
discount for any lack of liquidity,  minority position or lack of control of the
applicable security].  Such determination shall be set forth in writing, and the
Company shall, immediately following such determination,  deliver a copy thereof
to each holder of Warrants then outstanding.  The determination so made shall be
conclusive and binding on the Company and on each such holder. The Company shall
pay all of the  expenses  incurred in  connection  with any such  determination,
including, without limitation, the expenses of the independent appraiser engaged
to make  such  determination.  If the  Company  shall  not  have  selected  such
appraiser  within 20 days after the  occurrence  of the event giving rise to the
need therefor, then the Required Holders of the Warrants at the time outstanding
may select such  appraiser.  Notwithstanding  the foregoing,  in the case of any
security,  if clauses (a) or (b) of the  definition of Current  Market Price are
applicable to such  security,  then the Fair Value of such security shall be the
Current Market Price of such security.

     "Notice of Exercise" shall mean the form of Notice of Exercise appearing at
the end of this Warrant.

     "Other  Securities" shall mean with reference to the exercise  privilege of
the holders of the Warrants,  any shares (other than shares of Common Stock) and
any other securities of the Company (including,  without  limitation,  Preferred
Shares) or of any other  Person  which the  holders of the  Warrants at any time
shall be entitled  to  receive,  or shall have  received,  upon the  exercise or
partial exercise of the Warrants,  in lieu of or in addition to Common Stock, or
which at any time shall be issuable or shall have been issued in exchange for or
in  replacement of Common Stock (or Other  Securities)  pursuant to the terms of
the Warrants or otherwise.

     "Securities  Purchase  Agreements"  shall have the meaning specified in the
preamble to this Warrant.

     "Stock Purchase Rights" shall mean any warrants, options or other rights to
subscribe for,  purchase or otherwise  acquire any shares of Common Stock or any
Convertible  Securities,  either  immediately or upon the arrival of a specified
date or the happening of a specified event.

     "Warrant  Shares"  shall  mean the  shares of Common  Stock  (and/or  Other
Securities)  issued  or  issuable,  as the case may be,  from  time to time upon
exercise of the Warrants,  including,  without limitation,  any shares of Common

<PAGE>

Stock (and/or Other  Securities)  issued or issuable with respect thereto by way
of stock dividend or stock split or in connection  with a combination of shares,
recapitalization, merger, consolidation, other reorganization or otherwise.

     "Warrants"  shall  have  the  meaning  specified  in the  preamble  to this
Warrant.

     1.2.  Other  Definitions.  The terms defined in this section 1.2,  whenever
used in this Warrant,  shall,  unless the context otherwise  requires,  have the
following respective meanings:

     "this  Warrant"  (and  similar  references  to any of the  other  Operative
Documents)  shall mean,  and the words "herein" (and  "therein"),  "hereof" (and
"thereof"),  "hereunder" (and  "thereunder")  and words of similar import shall,
unless the context clearly  requires  otherwise,  refer to, such  instruments as
they may from time to time be amended, modified or supplemented.

2.    Exercise of Warrant.

     2.1. Right to Exercise;  Notice. On the terms and subject to the conditions
of this  section 2, the holder  hereof shall have the right,  at its option,  to
exercise  this  Warrant  in whole  or in part at any  time or from  time to time
during the Exercise Period,  all as more fully specified below,  provided that a
partial  exercise of this Warrant for less than the entire  remaining  amount of
Warrant Shares issuable under this Warrant shall be made only for a whole number
of shares.

     2.2.  Manner of  Exercise;  Issuance  of Common  Stock.  To  exercise  this
Warrant, the holder hereof shall deliver to the Company (a) a Notice of Exercise
duly executed by the holder hereof (or its  attorney)  specifying  the number of
Warrant  Shares to be purchased,  (b) an amount equal to the aggregate  Exercise
Price for all Warrant  Shares as to which this  Warrant is then being  exercised
and (c) this  Warrant.  At the  option  of the  holder  hereof,  payment  of the
Exercise  Price  shall be made (w) by wire  transfer of funds to an account in a
bank located in the United  States  designated  by the Company for such purpose,
(x) by check  payable to the order of the  Company,  (y) by  application  of any
Warrant Shares or any Notes,  as provided  below,  or (z) by any  combination of
such methods.

     Upon the  exercise of this Warrant in whole or in part,  the holder  hereof
may, at its option,  submit to the Company written instructions from such holder
to apply any specified portion of the Warrant Shares issuable upon such exercise
in payment of the Exercise Price required upon such exercise,  in which case the
Company will accept such specified portion of the Warrant Shares (at a value per
share equal to the Current  Market Price of such share,  if  applicable,  or the
then Fair Value of such share less,  in each case,  the  Exercise  Price then in
effect), in lieu of a like amount of such cash payment.

<PAGE>

     Upon the  exercise of this Warrant in whole or in part by the holder of any
Notes,  such  holder may,  at its  option,  surrender  such Notes to the Company
together  with  written  instructions  from  such  holder  to  apply  all or any
specified  principal  amount of such Notes against the payment of some or all of
the Exercise Price  required upon such exercise,  in which case the Company will
accept  such  specified  principal  amount in lieu of a like amount of such cash
payment.  Upon any such partial  application  of the principal of any such Note,
the Company at its expense will promptly  issue and deliver to or upon the order
of the holder thereof a new Note or Notes equal in aggregate principal amount to
the unpaid principal amount of such surrendered Note not so applied and dated so
as to result in no loss of  interest.  At the time of surrender of any such Note
pursuant to this section  2.2,  the Company will pay to the holder  surrendering
such Note all interest on the principal amount thereof so applied accrued to and
including the date of such surrender.

     Upon receipt of the items referred to in section 2.3, the Company shall, as
promptly as practicable,  and in any event within five days thereafter, cause to
be issued and delivered to the holder hereof (or its nominee) or the  transferee
designated in the Notice of Exercise, a certificate or certificates representing
the number of  Warrant  Shares  specified  in the  Notice of  Exercise  (but not
exceeding the maximum  number of shares  issuable upon exercise of this Warrant)
minus the number of Warrant Shares,  if any,  applied in payment of the Exercise
Price.  Such  certificates  shall be registered in the name of the holder hereof
(or its nominee) or in the name of such transferee, as the case may be.

     If this  Warrant is exercised in part,  the Company  shall,  at the time of
delivery of such  certificate or  certificates,  issue and deliver to the holder
hereof or the transferee so designated in the Notice of Exercise,  a new Warrant
evidencing the right of the holder hereof or such  transferee to purchase at the
Exercise  Price then in effect the aggregate  number of Warrant Shares for which
this Warrant shall not have been exercised and this Warrant shall be cancelled.

     2.3.  Effectiveness of Exercise.  Unless otherwise  requested by the holder
hereof, this Warrant shall be deemed to have been exercised and such certificate
or certificates representing Warrant Shares shall be deemed to have been issued,
and the holder or transferee  so  designated in the Notice of Exercise  shall be
deemed to have  become  the  holder of record  of such  Warrant  Shares  for all
purposes,  as of the  close  of  business  on the date on which  the  Notice  of
Exercise,  the Exercise  Price and this Warrant  shall have been received by the
Company.

     2.4.  Fractional  Shares.  The Company shall not issue  fractional  Warrant
Shares or scrip representing fractional Warrant Shares upon any exercise of this
Warrant.  As to any  fractional  Warrant  Shares  which the holder  hereof would
otherwise  be entitled to purchase  from the  Company  upon such  exercise,  the
Company  shall  issue one share  which the holder  hereof  shall be  entitled to
purchase from the Company at a price equal to the Exercise  Price  calculated as
of the date of the Notice of Exercise.

<PAGE>

Payment of such amount shall be made in any manner  permitted  under section 2.2
at the time of delivery of any certificate or certificates deliverable upon such
exercise.

     2.5.  Continued  Validity.  A holder  of  Warrant  Shares  issued  upon the
exercise of this Warrant,  in whole or in part, shall continue to be entitled to
all  rights  to which a holder  of this  Warrant  is  entitled  pursuant  to the
provisions of this Warrant  except such rights as by their terms apply solely to
the  holder  of a  Warrant,  notwithstanding  that  this  Warrant  is  cancelled
following such  exercise.  The Company will, at the time of any exercise of this
Warrant,  upon the request of the holder of the Warrant  Shares  issued upon the
exercise hereof, acknowledge in writing, in form reasonably satisfactory to such
holder,  its continuing  obligation to afford to such holder all rights to which
such holder shall continue to be entitled after such exercise in accordance with
the provisions of this Warrant, including,  without limitation,  those set forth
in sections 7.1, 7.2, 7.4 and 7.5 of this Warrant;  provided that if such holder
shall  fail to make  any  such  request,  such  failure  shall  not  affect  the
continuing obligation of the Company to afford to such holder all such rights.

3.    Registration, Transfer, Exchange and Replacement of Securities; Legends.

     3.1.  Registration,  Transfer,  Exchange  and  Replacement  of  Securities.
Reference  is  hereby  made to  sections  17 and 18 of the  Securities  Purchase
Agreements  for  certain  provisions  relating  to the  registration,  transfer,
exchange and replacement of the Warrants and Warrant Shares.

     3.2.  Legends.   Neither  this  Warrant  nor  any  Warrant  Shares  may  be
transferred or assigned unless  registered under the Securities Act or unless an
exemption  from  such  registration  is  available.  Until  the  date on which a
registration  statement  covering  the  Warrants  becomes  effective  under  the
Securities Act, each Warrant shall bear a legend in substantially  the following
form:

      "THIS   WARRANT   HAS   NOT   BEEN    REGISTERED    UNDER   THE
      SECURITIES   ACT  OF   1933,   AS   AMENDED   AND  MAY  NOT  BE
      TRANSFERRED   IN   THE   ABSENCE   OF    REGISTRATION   OR   AN
      EXEMPTION THEREFROM."

Until the date on which a  registration  statement  covering the Warrant  Shares
becomes effective under the Securities Act, each certificate  evidencing Warrant
Shares shall bear a legend in substantially the following form:

      "THE  SHARES   REPRESENTED   BY  THIS   CERTIFICATE   HAVE  NOT
      BEEN   REGISTERED   UNDER  THE   SECURITIES  ACT  OF  1933,  AS
      AMENDED   AND   MAY   NOT  BE   TRANSFERRED   IN  THE   ABSENCE
      OF     REGISTRATION      THEREUNDER     OR     AN     EXEMPTION
      THEREFROM."

<PAGE>

4.    Anti-Dilution Provisions.

     4.1. Adjustment of Number of Shares Purchasable. Upon any adjustment of the
Exercise Price as provided in section 4.2, the holder hereof shall thereafter be
entitled to purchase, at the Exercise Price resulting from such adjustment,  the
number of shares of Common Stock  (calculated to the nearest 1/100th of a share)
obtained by multiplying the Exercise Price in effect  immediately  prior to such
adjustment  by the  number  of  shares of  Common  Stock  purchasable  hereunder
immediately  prior to such  adjustment  and dividing the product  thereof by the
Exercise Price resulting from such adjustment.

     4.2.  Adjustment of Exercise Price. In addition to any adjustment  required
under the provisions of section 4.5 below,  and except as otherwise  provided in
section  4.2(n) below,  the Exercise  Price shall be subject to adjustment  from
time to time as set forth in this section 4.2.

     (a) Stock  Dividends,  Subdivisions and  Combinations.  If and whenever the
Company subsequent to the date hereof:

          (i) declares a dividend upon, or makes any distribution in respect of,
     any of its capital stock payable in shares of Common Stock, or

          (ii) subdivides its  outstanding  shares of Common Stock into a larger
     number of shares of Common Stock, or

          (iii) combines its  outstanding  shares of Common Stock into a smaller
     number of shares of Common Stock,

then  the  Exercise  Price  shall  be  adjusted  to  that  price  determined  by
multiplying  the Exercise Price in effect  immediately  prior to such event by a
fraction (A) the  numerator  of which shall be the total  number of  outstanding
shares of Common Stock  immediately prior to such event, and (B) the denominator
of which  shall be the total  number  of  outstanding  shares  of  Common  Stock
immediately after such event.

     (b)  Issuance of  Additional  Shares of Common  Stock.  If and whenever the
Company  subsequent  to the date hereof shall issue or sell any shares of Common
Stock  (except as  otherwise  provided  in the last  paragraph  of this  section
4.2(b)),  for a  consideration  per  share  less  than the Fair  Value per share
(determined  as of the date  specified in the next  succeeding  paragraph),  the
Exercise  Price upon each such issuance or sale shall be adjusted as of the date
specified  in  the  next  succeeding   paragraph  and  shall  be  determined  by
multiplying  the Exercise  Price in effect as of the date  specified in the next
succeeding  paragraph by a fraction the numerator of which is (A) the sum of (1)
the number of shares of Common Stock outstanding immediately prior to such issue
or sale multiplied by the Fair Value per share of Common Stock immediately prior
to such issue or sale plus (2) the aggregate consideration,  if any, received by

<PAGE>


the Company  upon such issue or sale,  divided by (B) the total number of shares
of Common  Stock  outstanding  immediately  after  such  issue or sale,  and the
denominator  of which is the Fair  Value per share of Common  Stock  immediately
prior to such issue or sale.

     For  purposes of this  section  4.2(b),  the date as of which the  Exercise
Price  shall  be  adjusted  and the date as of which  the  Fair  Value  shall be
determined shall be the earlier of (i) the date on which the Company shall enter
into a firm  contract  for the  issuance of such shares of Common Stock and (ii)
immediately prior to the date of actual issuance of such shares of Common Stock.

     No adjustment of the Exercise Price shall be made under this section 4.2(b)
upon the  issuance of any shares of Common  Stock which are (i)  distributed  to
holders of Common Stock pursuant to a stock dividend or subdivision for which an
adjustment  shall  previously have been made under section 4.2(a) or (ii) issued
pursuant  to the  exercise  of any  Stock  Purchase  Rights or  pursuant  to the
conversion or exchange of any Convertible  Securities in each case to the extent
that  sections  4.2(c) or (d)  applied to the  issuance  of such Stock  Purchase
Rights or Convertible Securities.

     (c)  Issuance  of  Stock  Purchase  Rights.  If and  whenever  the  Company
subsequent to the date hereof shall issue or sell any Stock Purchase  Rights and
the  consideration  per share for which  shares of Common  Stock may at any time
thereafter be issuable upon exercise  thereof (or, in the case of Stock Purchase
Rights  exercisable  for  the  purchase  of  Convertible  Securities,  upon  the
subsequent conversion or exchange of such Convertible  Securities) shall be less
than the Fair Value per share  (determined  as of the date specified in the next
succeeding paragraph),  the Exercise Price upon each such issuance or sale shall
be adjusted as provided in section  4.2(b) as of the date  specified in the next
succeeding  paragraph  on the basis that the maximum  number of shares of Common
Stock  ever  issuable  upon  exercise  of such  Stock  Purchase  Rights (or upon
conversion or exchange of such Convertible  Securities  following such exercise)
shall be deemed to have been issued as of the date of the  determination  of the
Fair Value specified in the next succeeding paragraph.

     For the purposes of this section 4.2(c),  the date as of which the Exercise
Price  shall  be  adjusted  and the date as of which  the  Fair  Value  shall be
determined shall be the earlier of (i) the date on which the Company shall enter
into a firm  contract  for the issuance of such Stock  Purchase  Rights and (ii)
immediately prior to the date of actual issuance of such Stock Purchase Rights.

     (d)  Issuance  of  Convertible  Securities.  If and  whenever  the  Company
subsequent  to the date hereof  shall issue or sell any  Convertible  Securities
(except as otherwise  provided in the last paragraph of this section 4.2(d)) and
the  consideration  per share for which  shares of Common  Stock may at any time
thereafter  be  issuable  pursuant to the terms of such  Convertible  Securities
shall be less than the Fair Value per share (determined as of the date specified

<PAGE>

in the next succeeding paragraph), the Exercise Price upon each such issuance or
sale shall be adjusted as provided in section 4.2(b) as of the date specified in
the next succeeding  paragraph on the basis that the maximum number of shares of
Common  Stock ever  necessary to effect the  conversion  or exchange of all such
Convertible Securities shall be deemed to have been issued as of the date of the
determination of the Fair Value specified in the next succeeding paragraph.

     For the purposes of this section  4.2(d), the date as of which the Exercise
Price  shall  be  adjusted  and the date as of which  the  Fair  Value  shall be
determined shall be the earlier of (i) the date on which the Company shall enter
into a firm contract for the issuance of such  Convertible  Securities  and (ii)
immediately prior to the date of actual issuance of such Convertible Securities.

     No adjustment of the Exercise Price shall be made under this section 4.2(d)
upon the issuance of any Convertible Securities which are issued pursuant to the
exercise of any Stock Purchase  Rights to the extent that section 4.2(c) applied
to the issuance of such Stock Purchase Rights.

     (e) Minimum Adjustment. If any adjustment of the Exercise Price pursuant to
this section 4.2 shall  result in an  adjustment  of less than  $.0001,  no such
adjustment  shall  be made,  but any such  lesser  adjustment  shall be  carried
forward  and  shall be made at the time and  together  with the next  subsequent
adjustment which, together with any adjustments so carried forward, shall amount
to $.0001;  provided that upon any  adjustment of the Exercise  Price  resulting
from (i) the  declaration of a dividend upon, or the making of any  distribution
in respect of, any stock of the  Company  payable in Common  Stock,  or (ii) the
reclassification by subdivision,  combination or otherwise,  of the Common Stock
into a greater or smaller number of shares,  the foregoing  figure of $.0001 per
share (or such figure as last adjusted) shall be proportionately  adjusted,  and
provided,  further,  that upon the exercise of this  Warrant,  the Company shall
make all necessary  adjustments (to the nearest .0001 of a cent) not theretofore
made to the Exercise  Price up to and including the date upon which this Warrant
is exercised.

     (f)   Readjustment  of  Exercise  Price.   Upon  each  change  in  (i)  the
consideration,  if any,  payable for any Stock  Purchase  Rights or  Convertible
Securities referred to in section 4.2(c) or (d), (ii) the consideration, if any,
payable upon exercise of such Stock  Purchase  Rights or upon the  conversion or
exchange of such Convertible  Securities or (iii) the number of shares of Common
Stock  issuable upon the exercise of such Stock  Purchase  Rights or the rate at
which such  Convertible  Securities are  convertible  into or  exchangeable  for
shares of Common Stock,  the Exercise  Price in effect at the time of such event
shall  forthwith be  readjusted  to the Exercise  Price which would have been in
effect at such time had such Stock  Purchase  Rights or  Convertible  Securities
provided  for such  changed  consideration,  number of shares of Common Stock so
issuable or conversion rate, as the case may be, at the time initially  granted,
issued or sold. On the expiration of any Stock Purchase  Rights not exercised or
of any right to  convert  or  exchange  under  any  Convertible  Securities  not

<PAGE>

exercised, the Exercise Price then in effect shall forthwith be increased to the
Exercise  Price which  would have been in effect at the time of such  expiration
had such Stock Purchase Rights or Convertible  Securities never been issued.  No
readjustment  of the Exercise  Price  pursuant to this section  4.2(f) shall (i)
increase the Exercise Price by an amount in excess of the adjustment  originally
made to the  Exercise  Price  in  respect  of the  issue,  sale or  grant of the
applicable  Stock Purchase Rights or Convertible  Securities or (ii) require any
adjustment to the amount paid or number of Warrant Shares received by any Person
upon any exercise of this Warrant prior to the date upon which such readjustment
to the Exercise Price shall occur.

     (g) Reorganization, Reclassification or Recapitalization of the Company. If
and  whenever  subsequent  to the date hereof the Company  shall  effect (i) any
reorganization or  reclassification  or recapitalization of the capital stock of
the Company  (other than in the cases referred to in section  4.2(a)),  (ii) any
consolidation  or merger of the Company with or into another  Person,  (iii) the
sale,  transfer or other disposition of the property,  assets or business of the
Company  as an  entirety  or  substantially  as an  entirety  or (iv) any  other
transaction  (or any other  event shall  occur) as a result of which  holders of
Common Stock become entitled to receive any shares of stock or other  securities
and/or  property  (including,  without  limitation,  cash) with respect to or in
exchange for the Common Stock,  there shall  thereafter be deliverable  upon the
exercise of this  Warrant or any  portion  thereof (in lieu of or in addition to
the Warrant Shares theretofore  deliverable,  as appropriate) the highest number
of shares of stock or other  securities  and/or the greatest  amount of property
(including,  without  limitation,  cash) to which the  holder  of the  number of
Warrant Shares which would otherwise have been  deliverable upon the exercise of
this Warrant or any portion  thereof at the time would have been  entitled  upon
such  reorganization or  reclassification  or recapitalization of capital stock,
consolidation,  merger, sale, transfer, disposition or other transaction or upon
the occurrence of such other event, and at the same aggregate Exercise Price.

     Prior to and as a condition of the consummation of any transaction or event
described in the preceding sentence,  the Company shall make equitable,  written
adjustments  in the  application  of the  provisions set forth herein and in the
other  Operative  Documents  (to the extent the same are for the  benefit of the
holders of the Warrants  and/or  Warrant  Shares)  satisfactory  to the Required
Holders of the Warrants and, if  applicable,  Warrant  Shares,  so that all such
provisions shall thereafter be applicable, as nearly as possible, in relation to
any shares of stock or other securities or other property thereafter deliverable
upon  exercise of the  Warrants.  Any such  adjustment  shall be made by and set
forth in a supplemental agreement of the Company and/or the successor entity, as
applicable,  for the  benefit  of and in form and  substance  acceptable  to the
Required Holders of the Warrants,  which agreement shall bind the Company and/or
the  successor  entity,  as  applicable,   and  all  holders  of  Warrants  then
outstanding  and shall be  accompanied  by a  favorable  opinion of the  regular
outside counsel to the Company or the successor  entity,  as applicable (or such
other firm as is reasonably acceptable to the Required Holders of the Warrants),

<PAGE>

as to the  enforceability  of such agreement and as to such other matters as the
Required Holders of the Warrants may reasonably request.

     (h) Other Dilutive  Events.  If any other  transaction or event (other than
those  explicitly  referred  to  in  this  section  4.2),   including,   without
limitation,  any issuance,  repurchase,  redemption,  or other  distribution  in
respect  of any  shares of stock or  securities  of the  Company or of any other
Person,  including any Person referred to in section  4.2(g),  shall occur as to
which the other provisions of this section 4 are not strictly applicable but the
failure  to make any  adjustment  to the  Exercise  Price or to any of the other
terms of this Warrant  would not fairly  protect the  purchase  rights and other
rights  represented by this Warrant in accordance with the essential  intent and
principles  hereof,  then,  and as a condition to the  consummation  of any such
transaction or event, and in each such case, the Company shall appoint a firm of
independent public accountants of recognized national standing (which may be the
regular  auditors  of the  Company),  which  shall  give its  opinion  as to the
adjustment,  if  any,  on a basis  consistent  with  the  essential  intent  and
principles  established  in this  section  4,  necessary  to  preserve,  without
dilution,  the rights  represented by this Warrant.  The certificate of any such
firm of  accountants  shall be  conclusive  evidence of the  correctness  of any
computation  made  under  this  section  4. The  Company  shall pay the fees and
expenses of such firm of accountants in connection  with any such opinion.  Upon
receipt of such opinion, the Company will promptly deliver a copy thereof to the
holder of this Warrant and shall make the adjustments described therein.

     (i)  Determination  of  Consideration.  For purposes of this section 4, the
consideration  received or receivable  by the Company for the issuance,  sale or
grant  of  shares  of  Common  Stock,   Stock  Purchase  Rights  or  Convertible
Securities,  irrespective  of the  accounting  treatment of such  consideration,
shall be valued and determined as follows:

          (i) Cash  Payment.  In the case of cash,  the gross amount paid by the
     purchasers  without  deduction of any accrued  interest or  dividends,  any
     reasonable  expenses  paid  or  incurred  and any  reasonable  underwriting
     commissions  or  concessions  paid or allowed by the Company in  connection
     with such issue or sale.

          (ii) Non-Cash Payment.  In the case of consideration  other than cash,
     the Fair Value  thereof (in any case as of the date  immediately  preceding
     the issuance, sale or grant in question).

          (iii) Certain  Allocations.  If shares of Common Stock, Stock Purchase
     Rights and/or Convertible Securities are issued or sold together with other
     securities or other assets of the Company for a consideration  which covers
     more than one of the foregoing  categories of  securities  and assets,  the
     consideration  received or receivable  (computed as provided in clauses (i)
     and (ii) of this  section  4.2 (i)) shall be  allocable  to such  shares of

<PAGE>

     Common  Stock,  Stock  Purchase  Rights  and/or  Convertible  Securities as
     reasonably  determined  in good  faith  by the  Board of  Directors  of the
     Company (provided such allocation is set forth in a written  resolution and
     a  certified  copy  thereof  is  furnished  to the  holder of this  Warrant
     promptly (but in any event within 10 days) following its adoption).

          (iv) Dividends in Securities.  If the Company shall declare a dividend
     or make any other  distribution  upon any stock of the  Company  payable in
     shares of Common Stock,  Convertible  Securities or Stock Purchase  Rights,
     such  shares of Common  Stock,  Convertible  Securities  or Stock  Purchase
     Rights,  as the  case may be,  issuable  in  payment  of such  dividend  or
     distribution   shall  be  deemed  to  have  been  issued  or  sold  without
     consideration.
          (v)  Stock   Purchase   Rights   and   Convertible   Securities.   The
     consideration  for which each share of Common  Stock  shall be deemed to be
     issued  upon  the  issuance  or  sale  of  any  Stock  Purchase  Rights  or
     Convertible  Securities  shall be  determined  by  dividing  (A) the  total
     consideration,  if any,  received by the Company as  consideration  for the
     Stock Purchase  Rights or the Convertible  Securities,  as the case may be,
     plus the minimum aggregate amount of additional consideration, if any, ever
     payable to the  Company  upon the  exercise of such Stock  Purchase  Rights
     and/or upon the conversion or exchange of such Convertible  Securities,  as
     the  case  may  be,  but  without  deduction  of any  accrued  interest  or
     dividends,  any  reasonable  expenses  paid or incurred and any  reasonable
     underwriting  commissions or concessions  paid or allowed by the Company in
     connection  with such issue or sale; by (B) the maximum number of shares of
     Common Stock ever issuable upon the exercise of such Stock Purchase  Rights
     or upon the conversion or exchange of such Convertible Securities.

          (vi) Merger,  Consolidation or Sale of Assets. If any shares of Common
     Stock,  Convertible  Securities  or Stock  Purchase  Rights  are  issued in
     connection  with any merger or  consolidation  of which the  Company is the
     surviving corporation, the amount of consideration therefor shall be deemed
     to be the Fair Value of such  portion of the  assets  and  business  of the
     non-surviving  corporation as shall be  attributable  to such Common Stock,
     Convertible Securities or Stock Purchase Rights, as the case may be. In the
     event of (A) any merger or  consolidation  of which the  Company is not the
     surviving corporation or (B) the sale, transfer or other disposition of the
     property, assets or business of the Company as an entirety or substantially
     as an  entirety  for stock or other  securities  of any other  Person,  the
     Company shall be deemed to have issued the number of shares of Common Stock
     for stock or securities of the surviving  corporation  or such other Person
     computed on the basis of the actual exchange ratio on which the transaction
     was predicated and for a consideration  equal to the Fair Value on the date
     of  such   transaction  of  such  stock  or  securities  of  the  surviving
     corporation or such other Person,  and if any such  calculation  results in

<PAGE>

     adjustment  of the  Exercise  Price,  the  determination  of the  number of
     Warrant Shares issuable upon exercise of this Warrant  immediately prior to
     such merger,  consolidation  or sale,  for the purposes of section  4.2(g),
     shall be made after giving effect to such adjustment of the Exercise Price.

     (j) Record Date.  If the Company  shall take a record of the holders of the
Common  Stock for the  purpose of  entitling  them (i) to receive a dividend  or
other  distribution  payable in Common  Stock,  Convertible  Securities or Stock
Purchase Rights or (ii) to subscribe for or purchase  Common Stock,  Convertible
Securities or Stock  Purchase  Rights,  then all references in this section 4 to
the date of the issue or sale of the shares of Common  Stock deemed to have been
issued or sold upon the declaration of such dividend or the making of such other
distribution  or the  date of the  granting  of such  right of  subscription  or
purchase,  as the case may be, shall be deemed to be  references  to such record
date. 

     (k) Shares  Outstanding.  The number of shares of Common Stock deemed to be
outstanding  at any given time shall not include  shares of Common Stock held by
the Company or any Subsidiary of the Company.

     (l) Maximum  Exercise Price. At no time shall the Exercise Price exceed the
amount set forth in the first  paragraph of the Preamble of this Warrant  except
as a result of an adjustment thereto pursuant to section 4.2(a)(iii) or 4.2(g).

     (m)  Application.  All  subdivisions  of this  section 4.2 are  intended to
operate  independently of one another.  If a transaction or an event occurs that
requires  the  application  of  more  than  one   subdivision,   all  applicable
subdivisions shall be given independent effect.

     (n) No  Adjustments  under Certain  Circumstances.  Anything  herein to the
contrary  notwithstanding,  no adjustment to the Exercise Price shall be made in
the case of any  issuance of shares of Common Stock (or Other  Securities)  upon
the exercise in whole or part of any Warrant.

     4.3. Rights Offering; Dividends. If the Company shall effect an offering of
securities pro rata among its stockholders, the holder hereof shall be entitled,
at its option,  to elect to  participate  in each and every such  offering as if
this Warrant had been  exercised  and such holder were,  at the time of any such
rights  offering,  then a holder of that number of Warrant  Shares to which such
holder is then entitled on the exercise hereof.  If the Company shall declare or
pay any  dividend  or make any other  distribution  to the holders of its Common
Stock in respect  thereof  (other  than a dividend  or  distribution  payable in
shares of Common  Stock,  Convertible  Securities or Stock  Purchase  Rights for
which an adjustment is made under  section 4.2),  such dividend or  distribution
shall also be paid to the holder  hereof as if this  Warrant had been  exercised
and such holder were,  at the time of any such  declaration  or payment,  then a
holder of that number of Warrant Shares to which such holder is then entitled on
the exercise hereof.

<PAGE>


          4.4. Certificates and Notices.

     (a) Adjustments to Exercise  Price. As promptly as practicable  (but in any
event not later than five days) after the occurrence of any event  requiring any
adjustment  under this section 4 to the Exercise Price (or to the number or kind
of securities or other property  deliverable upon the exercise of this Warrant),
the Company shall, at its expense,  deliver to the holder of this Warrant either
(i)  an  Officers'  Certificate  or  (ii) a  certificate  signed  by a  firm  of
independent public accountants of recognized national standing (which may be the
regular auditors of the Company),  setting forth in reasonable detail the events
requiring the adjustment and the method by which such  adjustment was calculated
and  specifying  the adjusted  Exercise Price and the number of shares of Common
Stock  purchasable  upon  exercise of this Warrant  after giving  effect to such
adjustment.  The certificate of any such firm of accountants shall be conclusive
evidence of the correctness of any computation made under this section 4.

     (b) Extraordinary  Corporate Events. If and whenever the Company subsequent
to the date  hereof  shall  propose to (i) pay any  dividend  to the  holders of
shares  of Common  Stock or to make any other  distribution  to the  holders  of
shares of Common Stock (including,  without limitation, any cash dividend), (ii)
offer to the  holders  of shares  of Common  Stock  rights to  subscribe  for or
purchase  any  additional  shares of any  class of stock or any other  rights or
options or (iii) effect any  reclassification  of the Common Stock (other than a
reclassification  involving merely the subdivision or combination of outstanding
shares of Common Stock),  (iv) engage in any reorganization or  recapitalization
or any  consolidation or merger (other than a merger in which no distribution of
securities  or other  property  is to be made to  holders  of  shares  of Common
Stock), (v) consummate any sale,  transfer or other disposition of its property,
assets and business as an entirety or substantially as an entirety,  (vi) effect
any other  transaction  which might require an adjustment to the Exercise  Price
(or to the number or kind of securities or other property  deliverable  upon the
exercise of this Warrant), including, without limitation, any transaction of the
kind described in section  4.2(g) or (vii)  commence or effect the  liquidation,
dissolution  or winding up of the Company,  then, in each such case, the Company
shall  deliver to the holder of this  Warrant an  Officers'  Certificate  giving
notice  of such  proposed  action,  specifying  (A) the date on which  the stock
transfer  books of the Company  shall  close,  or a record  shall be taken,  for
determining  the holders of Common Stock  entitled to receive  such  dividend or
other  distribution  or such  rights  or  options,  or the  date on  which  such
reclassification, reorganization, recapitalization, consolidation, merger, sale,
transfer, other disposition, transaction, liquidation, dissolution or winding up
shall take place or  commence,  as the case may be, and (B) the date as of which
it is  expected  that  holders of Common  Stock of record  shall be  entitled to
receive  securities or other property  deliverable upon such action, if any such
date is to be fixed.  Such Officers'  Certificate shall be delivered in the case
of any action covered by clause (i) or (ii) above, at least 30 days prior to the

<PAGE>

record date for  determining  holders of Common  Stock for purposes of receiving
such  payment or offer,  and, in any other  case,  at least 30 days prior to the
date upon which such action  takes place and 20 days prior to any record date to
determine  holders of Common Stock entitled to receive such  securities or other
property.

     (c) Effect of Failure.  Failure to give any  certificate or notice,  or any
defect in any  certificate  or notice  required under this section 4.4 shall not
affect the legality or validity of the  adjustment of the Exercise  Price or the
number of Warrant Shares purchasable upon exercise of this Warrant.

     4.5.  Adjustments  for Changes in Certain Data.  The Company  hereby agrees
that the  initial  aggregate  number of shares of  Common  Stock  issuable  upon
exercise  in full of the  Warrants  issued on the  Closing  Date to the  initial
holders  thereof  was  975,000  shares of Common  Stock,  which was  intended to
constitute ___% of the shares of Common Stock outstanding  immediately following
the Closing  (calculated  on a  fully-diluted  basis  assuming  the  conversion,
exercise and  exchange of all  securities  convertible  into or  exercisable  or
exchangeable  for Common Stock,  including,  without  limitation,  the shares of
Common Stock  issuable  upon  exercise of the  Warrants).  If for any reason the
shares  purchasable upon the exercise of the Warrants issued on the Closing Date
did not constitute __% of the shares of Common Stock outstanding as of such time
(and as so calculated),  the Company shall  forthwith  reissue each Warrant then
outstanding with appropriate adjustments in the Exercise Price and in the number
of shares issuable upon exercise thereof (together with an Officers' Certificate
setting forth in reasonable detail the computation of such adjustments), and all
such adjustments shall be reasonably satisfactory to the holders thereof.

5. Repurchase; Registration, etc. Reference is hereby made to sections 11 and 12
of the Securities Purchase Agreements for certain provisions relating to (a) the
repurchase of the Warrants and Warrant  Shares under certain  circumstances  and
(b) the registration rights of the holders of the Registrable Shares (as defined
in the Securities Purchase Agreements).

6.  Reservation of Common Stock.  The Company has reserved and will at all times
reserve and keep  available,  solely for  issuance,  sale and delivery  upon the
exercise of this  Warrant,  such number of shares of Common Stock  (and/or Other
Securities)  equal to the  number  of  shares  of  Common  Stock  (and/or  Other
Securities)  issuable  upon the  exercise  of this  Warrant.  All such shares of
Common Stock (and/or Other Securities) shall be duly authorized and, when issued
upon  exercise of this  Warrant in  accordance  with the terms  hereof,  will be
validly issued and fully paid and nonassessable with no liability on the part of
the holders thereof.
<PAGE>

7.    Various Covenants of the Company.

     7.1.  No  Impairment  or  Amendment.  The  Company  shall not by any action
including,  without  limitation,   amending  its  charter,  any  reorganization,
recapitalization,  transfer of assets, consolidation, merger, dissolution, issue
or sale of securities or any other voluntary action,  avoid or seek to avoid the
observance or performance  of any of the terms of this Warrant,  but will at all
times in good  faith  assist in the  carrying  out of all such  terms and in the
taking of all such  action as may be  necessary  or  appropriate  to protect the
rights of the holder hereof against impairment.  Without limiting the generality
of the  foregoing,  the Company (a) will not permit the par value of any Warrant
Shares  issuable  upon  exercise of this  Warrant to be greater  than the amount
payable  therefor  upon such  exercise,  (b) will take all such action as may be
necessary or  appropriate in order that the Company may validly issue fully paid
and  nonassessable  Warrant  Shares,  (c)  will  obtain  and  maintain  all such
authorizations,  exemptions or consents from any public  regulatory  body having
jurisdiction  as  may  be  necessary  to  enable  the  Company  to  perform  its
obligations  under this  Warrant,  (d) will not issue any capital stock or enter
into any  agreement  the  terms of which  would  have the  effect,  directly  or
indirectly,  of preventing the Company from honoring its  obligations  hereunder
and (e) will not amend or modify any term, condition or provision of its charter
or  by-laws  in a manner  which  is,  or could  reasonably  be  expected  to be,
materially  adverse to the  interests of any holder of Warrants  and/or  Warrant
Shares.

     So long as any Warrants or Warrant Shares are outstanding, the Company will
acknowledge in writing, in form satisfactory to any holder of any such security,
the continued validity of the Company's obligations hereunder.

     7.2.  Listing on  Securities  Exchanges,  etc. At all times  following  the
exercise of this  Warrant,  the Company will maintain the listing of all Warrant
Shares on each  securities  exchange  or market or  trading  system on which the
Common Stock (or Other  Securities) is then or at any time thereafter  listed or
traded.

     7.3.  Anti-Dilution  Provisions.  If the Company  issues any Stock Purchase
Rights or  Convertible  Securities  or other  securities  containing  provisions
protecting  the holder or holders  thereof  against  dilution in any manner more
favorable  to such  holder  or  holders  thereof  than  those  set forth in this
Warrant, such provisions (or any more favorable portion thereof) shall be deemed
to be  incorporated  herein as if fully set forth in this  Warrant  and,  to the
extent  inconsistent  with any provision of this Warrant,  shall be deemed to be
substituted therefor.

     7.4.  Indemnification.  Without limiting the generality of any provision of
the Securities Purchase Agreements or any of the other Operative Documents,  the
Company shall  indemnify,  save and hold harmless the holder of this Warrant and
the holder of any Warrant Shares from and against any and all  liability,  loss,
cost, damage,  reasonable  attorneys' and accountants' fees and expenses,  court
costs and all other out-of-pocket expenses reasonably incurred by such holder in

<PAGE>

connection with preserving, exercising and/or enforcing any of the terms hereof.

     7.5.  Certain  Expenses.  The Company  shall pay all expenses in connection
with,  and all taxes (other than stock  transfer  taxes) and other  governmental
charges that may be imposed in respect of, the issue,  sale and delivery of this
Warrant and any Warrant Shares.

8.    Miscellaneous.

     8.1.  Nonwaiver.  No course of dealing or any delay or failure to  exercise
any right,  power or remedy  hereunder on the part of the holder of this Warrant
or of any Warrant  Shares shall  operate as a waiver of or  otherwise  prejudice
such holder's rights, powers or remedies.

     8.2. Amendment. Any term, covenant,  agreement or condition of the Warrants
may, with the consent of the Company, be amended, or compliance therewith may be
waived (either generally or in a particular instance and either retroactively or
prospectively),  by one or more  substantially  concurrent  written  instruments
signed  by the  Required  Holders  of the  Warrants,  provided  that (a) no such
amendment or waiver shall change the number of Warrant Shares  issuable upon the
exercise  of any  Warrant or the manner of exercise or the amount of any payment
due upon  exercise  without  the prior  written  consent  of the  holder of such
Warrant  and  (b) no  such  amendment  or waiver  shall  extend to or affect any
obligation  not  expressly  amended  or waived or  impair  any right  consequent
thereon.

     8.3.  Communications.  All  communications  provided  for  herein  shall be
delivered,  mailed or sent by facsimile transmission addressed in the manner and
shall  be  effective  as of  the  time  specified  in  the  Securities  Purchase
Agreements.

     8.4. Like Tenor. All Warrants shall at all times be identical, except as to
the preamble to each Warrant.

     8.5.  Remedies.  The  Company  stipulates  that the  remedies at law of the
holder or holders of this Warrant  and/or of any Warrant  Shares in the event of
any  default or  threatened  default by the  Company  in the  performance  of or
compliance  with  any of the  terms  of this  Warrant  are not and  will  not be
adequate and that,  to the fullest  extent  permitted by law,  such terms may be
specifically  enforced by a decree for the specific performance of any agreement
contained  herein or by an  injunction  against a violation  of any of the terms
hereof or  otherwise.  No remedy  conferred in this Warrant on the holder of any
Warrant or Warrant  Shares is intended to be exclusive of any other remedy,  and
each and every such remedy shall be cumulative and shall be in addition to every
other  remedy  given  hereunder  or  under  any  other  agreement,  document  or
instrument  or now or  hereafter  existing  at law or in equity or by statute or
otherwise.
<PAGE>


     8.6.  Successors and Assigns.  This Warrant and the rights evidenced hereby
shall inure to the benefit of and be binding upon the  successors and assigns of
the Company,  the holder or holders of this Warrant and, as  applicable,  of any
Warrant Shares, to the extent provided herein,  and shall be enforceable by such
holder or holders.

     8.7.  Governing  Law. This Warrant,  including the validity  hereof and the
rights  and  obligations  of the  Company  and  of the  holder  hereof  and  all
amendments and supplements hereof and all waivers and consents hereunder,  shall
be construed in accordance with and governed by the domestic substantive laws of
the State of New York without giving effect to any choice of law or conflicts of
law  provision  or  rule  that  would  cause  the  application  of the  domestic
substantive laws of any other jurisdiction.

     8.8.  Headings;  Entire Agreement;  Partial  Invalidity,  etc. The table of
contents to and headings in this Warrant are for purposes of reference  only and
shall not limit or otherwise affect the meaning hereof.  This Warrant,  together
with  the  other  Operative   Documents,   embodies  the  entire  agreement  and
understanding between the holder hereof and the Company and supersedes all prior
agreements and understandings relating to the subject matter hereof. In case any
provision  in this  Warrant  or any of the other  Operative  Documents  shall be
invalid, illegal or unenforceable,  the validity, legality and enforceability of
the remaining provisions shall not in any way be affected or impaired thereby.

         [The remainder of this page is left blank intentionally.]

<PAGE>

     IN WITNESS  WHEREOF,  the Company has caused this Warrant to be executed as
an instrument  under seal and to be attested by its duly authorized  officers as
of the date first above written.

                                   PSC INC.



                                   By:   /s/ William J. Woodard    
                                             William J. Woodard
                                             Vice President, Finance

<PAGE>

                           FORM OF NOTICE OF EXERCISE

               (To be executed only upon partial or full exercise
                             of the within Warrant)



     The  undersigned  registered  holder  of  the  within  Warrant  irrevocably
exercises the within Warrant for and purchases  shares of Common Stock (or Other
Securities) [Specify applicable class and/or kind of securities] of PSC INC. and
herewith  makes payment  therefor in the amount of $ , all at the price,  in the
manner and on the terms and  conditions  specified  in the within  Warrant,  and
requests that a certificate  (or  certificates in  denominations  of shares) for
such shares  hereby  purchased be issued in the name of and delivered to (choose
one) (a) the undersigned or (b) , whose address is and, if such shares shall not
include all the Warrant Shares issuable as provided in the within Warrant,  that
a new Warrant of like tenor for the number of Warrant Shares not being purchased
hereunder  be  issued  in the  name of and  delivered  to  (choose  one) (a) the
undersigned or (b) , whose address is .


Dated:                ,      .


                                         [                            ]



                                         By                                
                                         (Signature of Registered Holder)



NOTICE:   The signature on this Notice of Exercise must correspond with the name
          as written upon the face of the within Warrant in every particular,
          without alteration or enlargement or any change whatever.


<PAGE>

                 (To be executed only upon the assignment
                          of the within Warrant)



     FOR VALUE RECEIVED, the undersigned registered holder of the within Warrant
hereby sells, assigns and transfers  unto______________________  , whose address
is  ________________________________________________  , all of the rights of the
undersigned under the within Warrant, with respect to shares of Common Stock (or
Other  Securities)  [Specify  applicable class and/or kind of securities] of PSC
INC.  and, if such shares shall not include all the Warrant  Shares  issuable as
provided in the within Warrant,  that a new Warrant of like tenor for the number
of Warrant Shares not being  transferred  hereunder be issued in the name of and
delivered to [choose one] (a) the  undersigned or (b)  ______________________  ,
whose   address  is   ___________________________________   ,  and  does  hereby
irrevocably  constitute  and  appoint  ___________________________  Attorney  to
register such transfer on the books of PSC INC. maintained for the purpose, with
full power of substitution in the premises.


Dated:                  ,      .



                                   [                                ]



                                   By                                
                                    (Signature of Registered Holder)



NOTICE: The signature on this Assignment must correspond with the name as
        written upon the face of the within Warrant in every particular, without
        alteration or enlargement or any change whatever.


                                                                     Exhibit 4.4




THIS SECURITY HAS NOT BEEN  REGISTERED  UNDER THE  SECURITIES  ACT OF 1933, AS
AMENDED,  OR ANY STATE SECURITIES LAWS, AND MAY NOT BE OFFERED OR SOLD, UNLESS
IT HAS BEEN REGISTERED  UNDER SUCH ACT OR APPLICABLE  STATE SECURITIES LAWS OR
UNLESS AN EXEMPTION FROM REGISTRATION IS AVAILABLE.

                             PSC ACQUISITION INC.

                   SUBORDINATED INSTALLMENT PROMISSORY NOTE


US $5,000,000
                                                                 July 12, 1996

     For value received and intending to be legally bound, PSC ACQUISITION INC.,
a Delaware corporation (the "Operating Company"),  hereby promises to pay to the
order of  Spectra-Physics,  Inc.,  a  Delaware  corporation  (together  with any
subsequent holder of this Note, the "Holder"), the principal sum of Five Million
Dollars  ($5,000,000),  together with interest thereon as hereinafter  provided,
payable  at the times and in the  manner  hereinafter  provided,  and  Operating
Company further agrees as is hereinafter set forth.  Certain  capitalized  terms
used herein and not otherwise defined herein are defined in Section 12 hereof.


     1.  Interest.  This Note shall bear  interest  from the date  hereof on the
unpaid principal amount hereof at a variable rate of interest per annum equal to
the Prime Rate,  plus one percent  (1%).  This Note shall also bear  interest on
overdue  principal and, to the extent  permitted by law, on any overdue interest
at a variable  rate of interest  per annum  equal to the Prime Rate,  plus three
percent (3%). In no event shall the amount  payable by the Operating  Company as
interest on this Note exceed the highest lawful rate  permissible  under any law
applicable  thereto.  All interest shall be calculated based upon a 360 day year
and the actual  number of days  elapsed.  The  interest  rate on this Note shall
change  automatically  without notice to the Operating Company  immediately with
each change in the Prime Rate.

     2.  Payments.  The  principal  hereof  shall be  payable  in  sixteen  (16)
consecutive  quarterly  installments,  due on each April 12, July 12, October 12
and January 12, commencing October 12, 1997, each in the amount of Three Hundred
and Twelve  Thousand  Five Hundred  Dollars  ($312,500).  This Note shall have a
final maturity,  at which all principal amounts  remaining  outstanding shall be
repaid in full, on July 12, 2001.  Accrued but unpaid  interest shall be due and
payable on each  April 12,  July 12,  October  12, and  January  12,  commencing
October 12, 1996, and at maturity;  provided that interest on overdue  principal
and overdue  interest shall, at the option of the Holder,  be payable on demand.
Payments of principal  and interest  shall be made in lawful money of the United
States of  America,  by wire  transfer  of  immediately  available  funds to the
following account:
<PAGE>
            CoreStates Bank of Delaware N.A.
            ABA:  #031000011

                     Credit:  CoreStates Bank of Delaware
                                    Demand Checking

                    Name of:  Spectra-Physics, Inc.

            Account Number:   #0095-6176

or by such other  method or to such  address  as the  Holder may  specify to the
Operating Company in writing.

     3.  Prepayment.  The  Operating  Company shall have the right to prepay the
unpaid principal balance hereof, in whole or in part, at any time so long as all
accrued  and unpaid  interest  hereunder  is  simultaneously  paid in full.  Any
partial  prepayment  of this Note pursuant to this Section 3 shall be applied to
the  payment  of  installments  of the  principal  hereof  in  inverse  order of
maturity.

     4.  Financial  Statements  And  Information.  So long as this Note  remains
outstanding,  the  Operating  Company  shall provide to the Holder the documents
described in Sections 7(a) through 7(j) of the Securities  Purchase  Agreements;
provided,  however,  that for purposes of applying this Section of this Note (i)
the  capitalized  terms  used  in  such  Sections  of  the  Securities  Purchase
Agreements  shall be deemed to have the meanings  ascribed to them in this Note,
(ii) the  phrase  "Required  Holders of the Notes and of the  Warrants"  used in
Section  7(b) of the  Securities  Purchase  Agreements  shall  mean the  Holder,
(iii) the phrase "this Agreement,  the Other Securities  Purchase Agreements and
the  Securities"  shall mean the Operative  Documents,  and (iv) the phrase "the
Seller  or"  the  phrase  "Seller  Notes  and/or  the"  in  Section  7(i) of the
Securities Purchase Agreements shall be deemed deleted.

     5.  Inspection.  The Operating  Company and the Holding Company will permit
any Person  designated by the Holder,  on reasonable  notice and at the Holder's
expense  (unless  a Default  or Event of  Default  shall  have  occurred  and be
continuing,  in which case at the  Operating  Company's  expense),  to visit and
inspect any of the properties of the Holding  Company and its  Subsidiaries,  to
examine  its and their books and  records  (and to make copies  thereof and take
extracts therefrom) and to discuss its and their affairs,  finances and accounts
with and to be  advised as to the same by, its and their  officers  and  outside
counsel  (and if a  Default  or Event of  Default  shall  have  occurred  and be
continuing,  its and their independent  accountants,  each of whom the Companies
hereby  direct  and  authorize  to  engage  in  such   discussions   under  such
circumstances),  all at such  reasonable  times and  intervals as the Holder may
desire.

<PAGE>

     6.  Subordination  Of Notes. The provisions of Section 10 of the Securities
Purchase Agreement (other than  Section 10.4(d))  are incorporated  herein as if
set forth in full herein, provided, however, that (i) the capitalized terms used
in such Section 10 of the Securities Purchase Agreements shall be deemed to have
the  meanings  ascribed  to them in this  Note,  (ii) the  references  to  "this
Agreement" and/or "the other Securities Purchase Agreements" in Sections 10.2(a)
and  10.11  of the  Securities  Purchase  Agreements  shall be  deemed  deleted,
(iii) the  term  "Agreement"  in  Sections  10.4(a)(ii),  10.8 and  10.10 of the
Securities  Purchase  Agreements  shall mean this Note, (iv) the phrase "and the
right to  exercise  any of the  Warrants"  in  Section  10.11 of the  Securities
Purchase Agreements shall be deemed deleted, (v) in each instance where there is
a  reference  to the  vote,  consent  or  approval  of  holders  of a  specified
percentage  of the principal  amount of Superior  Indebtedness,  such  reference
shall  be  deemed  to mean  the  holders  of such  specified  percentage  of the
principal amount of each class of Superior  Indebtedness (and for this purpose a
"class" of Superior  Indebtedness  shall  refer to each of (a) the  Indebtedness
under the  Subordinated  Debt Documents and any Refinancing  Agreement  relating
thereto,  and (b) the  Indebtedness  under  the Bank  Credit  Documents  and any
Refinancing  Agreement relating thereto, each of which is a separate class,) and
(vi) Section 10.4(a)(i) shall be deemed to read:

     (i) a Material Default shall have occurred which (other than in the case of
a default  under  section  6.01(f)  of the Bank  Credit  Agreement  or  sections
16.1(e), (f) or (g) of the Securities Purchase Agreements) permits the holder or
holders of any Superior  Indebtedness  to  immediately  accelerate  the maturity
thereof;

     7.  Covenants.  Each  of the  Operating  Company  and the  Holding  Company
covenants  and  agrees  that  so  long  as any  portion  of  this  Note  remains
outstanding,  unless the Holder otherwise agrees in writing, it shall, and shall
cause its Subsidiaries to:

     7.1 Comply with each of the  covenants  set forth in Sections  14.1 through
14.19,  excluding  Section 14.6(b) and Section 14.7, of the Securities  Purchase
Agreements, provided, however, that:

     (i) the capitalized terms used in such Sections of the Securities  Purchase
Agreements shall be deemed to have the meanings ascribed to them in this Note;

     (ii) with respect to Section 14.5(a), (1) the term "Refinancing  Agreement"
as  used  in  paragraph (iv)  shall  have  the  meaning  ascribed  to it in  the
Securities Purchase Agreements,  and (2) paragraph  (ii) thereof shall be deemed
to read as follows:

     (ii)  Funded  Debt  evidenced  by the notes  issued  under  the  Securities
Purchase  Agreements and under any Refinancing  Agreement relating to such notes
(but no other  extension,  refinancing,  refunding  or  renewal  of such  Notes)
provided  that the  aggregate  principal  amount of such Funded Debt and Current
Debt  outstanding  under the Securities  Purchase  Agreements and such notes and
under  any  Refinancing  Agreement  relating  thereto  shall  at no time  exceed
$31,500,000 minus the sum of all repayments of the principal of such Funded Debt
or Current Debt.
<PAGE>

     (iii) with respect to Section 14.16(a),  the term "the Securities" shall be
deemed replaced by the term "this Note";

     (iv) with respect to Section 14.16(c), (1) the term "Acquisition Documents"
shall be deemed  replaced by the term  "Subordinated  Debt  Documents",  (2) the
terms "any holder of any of the Securities" shall be deemed replaced by the term
"the  Holder",  (3) the terms  "Notes or to pay the Put Price under  section 12"
shall  be  deemed  replaced  by the  term  "Note",  (4) the  terms  "agreements,
documents  or  instruments  referred  to  in  section 4.3,   including,  without
limitation," shall be deemed deleted, and (5) the terms "term of the Bank" shall
be deemed replaced by the terms "term of the Subordinated Debt Documents, Bank";

     (v) with respect to Section  14.17(c),  the terms  "Agreement and the Other
Securities Purchase  Agreements" shall be deemed replaced by the term "Note" and
the terms "and thereof" shall be deemed deleted; and

     (vi) with respect to Section  14.18,  the term  "Required"  shall be deemed
deleted.

     7.2 Subject to Section 8.6 hereof,  comply with each of the  covenants  set
forth in Section 14.7 of the Securities Purchase Agreements.

     8. Remedies.

     8.1 Events Of Default Defined; Acceleration Of Maturity. If any one or more
of the following  events  ("Events of Default") shall occur (whatever the reason
for such Event of Default and whether it shall be voluntary or involuntary or be
effected by operation of law or pursuant to any judgment, decree or order of any
court or any order,  rule or regulation of any  administrative  or  governmental
body), that is to say:

     (a) if default shall be made in the due and punctual  payment of all or any
part of the  principal  of this Note when and as the same  shall  become due and
payable,  whether at the  stated  maturity  thereof,  by notice of or demand for
prepayment, or otherwise;

     (b) if  default  shall  be  made in the due  and  punctual  payment  of any
interest on this Note when and as such interest shall become due and payable and
such default shall have continued for a period of five Business Days;
<PAGE>

     (c) if  default  shall  be made in the  performance  or  observance  of any
covenant, agreement or condition contained in Section 4 (with respect to Section
7(g) of the  Securities  Purchase  Agreements)  or  Section 5 (with  respect  to
Sections 14.2(b) or 14.5 through 14.19,  inclusive,  of the Securities  Purchase
Agreements);

     (d) if default shall be made in the  performance or observance of any other
of the covenants,  agreements or conditions contained in this Note or any of the
other Operative  Documents and such default shall have continued for a period of
30 days  after the  earlier to occur of (i) either  Company's  obtaining  actual
knowledge of such default or (ii) either Company's  receipt of written notice of
such default;

     (e) if the  Holding  Company  or any  Material  Subsidiary  of the  Holding
Company shall make a general  assignment for the benefit of creditors,  or shall
not pay its debts as they become due, or shall admit in writing its inability to
pay its  debts  as they  become  due,  or shall  file a  voluntary  petition  in
bankruptcy,  or shall be  adjudicated  bankrupt or insolvent,  or shall file any
petition  or  answer  seeking  for  itself  any   reorganization,   arrangement,
composition, readjustment,  liquidation, dissolution or similar relief under any
present or future statute, law or regulation, or shall file any answer admitting
or not contesting the material allegations of a petition filed against it in any
such proceeding,  or shall seek or consent to or acquiesce in the appointment of
any trustee, custodian,  receiver,  liquidator or fiscal agent for it or for all
or any  substantial  part of its  properties,  or  shall  (or its  directors  or
stockholders shall) take any action looking to its dissolution or liquidation;

     (f) if,  within 30 days after the  commencement  of an action  against  the
Holding  Company or any Material  Subsidiary of the Holding  Company seeking any
reorganization, arrangement, composition, readjustment, liquidation, dissolution
or similar relief under any present or future statute,  law or regulation,  such
action  shall not have been  dismissed or all orders or  proceedings  thereunder
affecting the operations or the business of the Holding Company or such Material
Subsidiary  stayed,  or if the  stay  of any  such  order  or  proceeding  shall
thereafter be set aside, or if, within 30 days after the appointment without the
consent or acquiescence  of the Holding  Company or such Material  Subsidiary of
any trustee,  custodian,  receiver,  liquidator  or fiscal agent for the Holding
Company or any  Material  Subsidiary  of the  Holding  Company or for all or any
substantial part of their respective properties, such appointment shall not have
been vacated;

     (g) if, under the  provisions  of any law for the relief or aid of debtors,
any court or governmental agency of competent  jurisdiction shall assume custody
or control of the Holding  Company or of any Material  Subsidiary of the Holding
Company or of all or any  substantial  part of their  respective  properties and
such custody or control  shall not be  terminated  or stayed within 30 days from
the date of assumption of such custody or control;
<PAGE>

     (h) if (1) the Holding  Company or any  Subsidiary  of the Holding  Company
shall fail to (i) make any payment due on any Indebtedness (other than this Note
and other than  Indebtedness  under the Bank Credit  Documents or the Securities
Purchase  Agreements (or any Refinancing  Agreement  related  thereto)) or other
obligation  (including  any in  respect  of any  lease  or any  Shares  upon the
exercise  by any  Person  of any put or call  option or other  similar  right of
redemption or repurchase with regard to such Shares in accordance with the terms
of such option or right),  if the aggregate  outstanding  amount thereof (and of
any other  Indebtedness  or other  obligation as to which the Holding Company or
any  Subsidiary is in default)  exceeds  $2,000,000 or (ii) perform,  observe or
discharge any covenant,  condition or obligation in any  agreement,  document or
instrument  evidencing,  securing  or  relating  to such  Indebtedness  or other
obligation, if the effect of any such failure of the character described in this
clause (1) is to cause,  or permit  any other  Person to cause,  any  payment in
respect  thereof in an aggregate  amount of $2,000,000 or more to become due and
payable,  or (2) if any such  Indebtedness  or other  obligation or Indebtedness
under the Bank Credit  Documents or the Securities  Purchase  Agreements (or any
Refinancing Agreement related thereto) in aggregate amount of $2,000,000 or more
shall be  accelerated or shall become due and payable by its terms and shall not
be paid or extended;

     (i) if a final  judgment for the payment of money which,  together with all
other  outstanding  final judgments for the payment of money against the Holding
Company and/or any of its Subsidiaries, exceeds an aggregate of $2,000,000 shall
be rendered by a court of record against the Holding  Company or any Subsidiary,
and the  Holding  Company or such  Subsidiary  shall not  discharge  the same or
provide for its  discharge in  accordance  with its terms,  or procure a stay of
execution  thereof within 30 days from the date of entry thereof and within such
period of 30 days, or such longer period during which execution of such judgment
shall have been stayed,  move to vacate such  judgment or appeal  therefrom  and
cause the execution thereof to be stayed pending determination of such motion or
during such appeal;

     (j) if any  representation  or warranty made by or on behalf of the Holding
Company or any Subsidiary of the Holding Company in the  Acquisition  Agreement,
this  Note  or in any of the  other  Operative  Documents  or in any  agreement,
document or instrument  delivered  under or pursuant to any provision  hereof or
thereof shall prove to have been materially false or incorrect on the date as of
which made;
<PAGE>

     (k) if, at any time,  this  Note or any of the  other  Operative  Documents
shall for any reason (other than the scheduled termination thereof in accordance
with its terms) expire,  fail to be in full force and effect or be  disaffirmed,
repudiated,  cancelled,  terminated  or declared to be  unenforceable,  null and
void;

     (l) if (i) any Plan shall fail to satisfy the minimum funding  standards of
ERISA  or the  Code  for any  plan  year or part  thereof  or a  waiver  of such
standards  or extension of any  amortization  period is sought or granted  under
section  412 of the Code,  (ii) a notice of intent to  terminate  any Plan shall
have been or is reasonably  expected to be filed with the PBGC or the PBGC shall
have instituted  proceedings under section 4042 of ERISA to terminate or appoint
a trustee to administer any Plan or the PBGC shall have notified  either Company
or any ERISA Affiliate that a Plan may become a subject of any such proceedings,
(iii) the aggregate "amount of unfunded benefit liabilities" (within the meaning
of section 4001(a)(18) of ERISA) under all Plans,  determined in accordance with
Title IV of ERISA,  shall  exceed  $250,000,  (iv)  either  Company or any ERISA
Affiliate  shall have incurred or is reasonably  expected to incur any liability
pursuant  to Title I or IV of ERISA or the penalty or excise tax  provisions  of
the Code relating to employee  benefit  plans,  (v) either  Company or any ERISA
Affiliate  withdraws from any Multiemployer  Plan, or (vi) either Company or any
Subsidiary of either Company  establishes or amends any employee welfare benefit
plan that  provides  post-employment  welfare  benefits  in a manner  that would
increase the liability of either  Company or any  Subsidiary  of either  Company
thereunder;  and any such event or events  described in clauses (i) through (vi)
above,  either individually or together with any other such event or events, has
resulted  in, or could  reasonably  be expected to result in a Material  Adverse
Change; or

     (m) if (i) any Person or two or more Persons  acting in concert  shall have
acquired  beneficial  ownership  (within  the  meaning  of  Rule  13d-3  of  the
Commission under the Exchange Act),  directly or indirectly,  of Voting Stock of
the Holding  Company (or other  securities  convertible  into such Voting Stock)
representing 30% or more of the combined voting power of all Voting Stock of the
Holding  Company;  (ii)  during  any  period  of up to  24  consecutive  months,
commencing  before  or  after  the  date of this  Note,  individuals  who at the
beginning of such 24-month  period were  directors of the Holding  Company shall
cease for any reason to  constitute  a majority of the board of directors of the
Holding  Company;  or (iii) any Person or two or more Persons  acting in concert
shall have  acquired by  contract or  otherwise,  or shall have  entered  into a
contract or arrangement  that,  upon  consummation,  will result in its or their
acquisition  of the power to exercise,  directly or  indirectly,  a  controlling
influence over the management or policies of the Holding Company;

then,  in the  case  of an  Event  of  Default  of the  character  described  in
subdivisions  (a), (b), (c), (d), (h), (i), (j), (k), (l) or (m) of this Section
8.1  and at the  option  of the  Holder,  exercised  by  written  notice  to the
Operating  Company,  the principal of this Note shall  forthwith  become due and
payable,  together with interest accrued thereon,  without presentment,  demand,

<PAGE>

protest or other notice of any kind, all of which are hereby  expressly  waived,
and the Operating  Company shall forthwith upon any such acceleration pay to the
Holder the entire  principal  of and  interest  accrued on this Note,  provided,
further,  that in the case of an Event of Default of the character  described in
Subsections  (e), (f) or (g) of this  Section  8.1,  the  principal of this Note
shall forthwith  become due and payable,  together with interest accrued thereon
(including  any  interest  accruing  after  the  commencement  of any  action or
proceeding under the federal  bankruptcy laws, as now or hereafter  constituted,
or any  other  applicable  domestic  or  foreign  federal  or state  bankruptcy,
insolvency or other similar law, and any other  interest that would have accrued
but for the commencement of such proceeding, whether or not any such interest is
allowed  as an  enforceable  claim  in such  proceeding),  without  presentment,
demand,  protest or other notice of any kind, all of which are hereby  expressly
waived, and the Operating Company shall forthwith upon any such acceleration pay
to the Holder the entire principal of and interest accrued on this Note.

     8.2 Suits for Enforcement,  etc. Subject to the provisions of Section 6, in
case any one or more of the Events of  Default  specified  in Section  8.1 shall
have  occurred,  and  irrespective  of whether  this Note has become or has been
declared  immediately due and payable under Section  8.1, the Holder may proceed
to protect and enforce its rights  either by suit in equity or by action at law,
or  both.  Without  limiting  the  generality  of  the  foregoing  (and  without
derogating  from  any  provision  contained  in this  Note  or any of the  other
Operative Documents), upon the occurrence and during the continuance of an Event
of  Default,  the  Holder  shall have the right to apply for and have a receiver
appointed for each of the Companies and their  respective  Subsidiaries,  or any
one or more of them, by a court of competent jurisdiction in any action taken by
Holder  to  enforce  its  rights  and  remedies  hereunder  and  under the other
Operative  Documents in order to manage,  protect and preserve the assets of the
Companies and their  respective  Subsidiaries  and continue the operation of the
business  of the  Companies  and their  respective  Subsidiaries,  or to sell or
dispose of the assets of the Companies and their respective Subsidiaries, and to
collect all  revenues  and profits  thereof and apply the same to the payment of
all expenses and other charges of such receivership,  including the compensation
of the receiver,  and the Companies hereby consent to such  appointment  without
regard to the existence of any misfeasance or malfeasance or the presence of any
defenses that would otherwise be available to such application.


     8.3 Remedies Cumulative.  No remedy conferred in this Note or in any of the
other  Operative  Documents  upon the Holder is intended to be  exclusive of any
other remedy, and each and every such remedy shall be cumulative and shall be in
addition to every other remedy given hereunder or thereunder or now or hereafter
existing at law or in equity or by statute or otherwise.

     8.4 Remedies Not Waived.  No course of dealing  between  either Company and
any of their respective  Subsidiaries,  on the one hand, and the Holder,  on the
other hand,  and no delay by the Holder in  exercising  any rights  hereunder or
under any of the other  Operative  Documents  shall  operate  as a waiver of any
rights of any such holder.
<PAGE>

     8.5  Application  of  Payments.  In case any one or more of the  Events  of
Default specified in Section 8.1 shall have occurred,  all amounts to be applied
to the prepayment or payment of the Note, shall be applied, after the payment of
all  related  costs and  expenses  incurred  by the Holder  (including,  without
limitation,  reasonable  compensation  to any  and  all  trustees,  liquidators,
receivers or similar  officials and reasonable fees,  expenses and disbursements
of counsel) in such order of priority as is determined by the Holder.

     8.6 Automatic Waivers of Certain Financial  Covenant  Defaults.  If default
shall be made in the  performance  or observance  of the covenants  contained in
Section 7.2  hereof,  and the  Required  Holders of the notes  issued  under the
Securities  Purchase  Agreements  waive,  in  accordance  with the  terms of the
Securities  Purchase  Agreements,  the  analogous  default  under the  analogous
provisions  of  Section  14.7  of  the  Securities  Purchase  Agreements,  then,
notwithstanding  any other provision  herein to the contrary,  upon receipt of a
copy of such waiver, the Holder shall be deemed to have also waived such default
under Section 7.2 hereof,  on the same terms and subject to the same  conditions
as the analogous  default was waived under the Securities  Purchase  Agreements;
provided that in the event the Holding Company or any of its  Subsidiaries  pays
the  holders of the notes  under the  Securities  Purchase  Agreements  a fee or
increases  the rate of interest to be paid to such  Holders in  connection  with
obtaining such waiver, the Operating Company shall at the same time pay Holder a
proportional  fee or  shall  make  adjustments  to  the  interest  rate  payable
hereunder to reflect comparable treatment of Holder hereunder.

     9. Expenses;  Indemnity. The Companies,  jointly and severally, will pay or
cause to be paid (or reimbursed,  as the case may be) and will defend, indemnify
and hold the  Holder and each of its  directors,  officers,  employees,  agents,
advisors and Affiliates (each, an "Indemnitee") harmless (on an after tax basis)
in respect of all costs, losses,  expenses (including,  without limitation,  the
reasonable  fees,  costs,  expenses  and  disbursements  of counsel) and damages
(collectively,   "Indemnified  Costs")  incurred  by  or  asserted  against  any
Indemnitee in connection with the performance and/or enforcement of this Note or
any of the other Operative Documents (including,  without limitation,  so-called
work-outs  and/or  restructurings  and  all  amendments,  waivers  and  consents
hereunder  and  thereunder,  whether or not  effected)  which may  otherwise  be
related  in any  way to this  Note  or any  other  Operative  Documents  or such
Indemnitee's   relationship  to  either  Company  or  any  of  their  respective
Affiliates or any of their respective properties and assets, including,  without
limitation, any and all Indemnified Costs related in any way to the requirements
of any Environmental Laws (as the same may be amended,  modified or supplemented
from  time to  time) or to any  environmental  investigation,  assessment,  site
monitoring,  containment, clean up, remediation, removal, restoration, reporting
and  sampling,  whether or not  consented  to, or  requested or approved by, any
Indemnitee, and whether or not such Indemnified Cost is attributable to an event
or condition  originating from any properties or assets of either Company or any
of their respective Subsidiaries or any other properties previously or hereafter
owned, leased, occupied or operated by either Company or any of their respective
Subsidiaries.  Notwithstanding  the foregoing,  the Companies shall not have any
obligation to an Indemnitee under this Section 9 with respect to any Indemnified
Cost which is finally  determined by a court of competent  jurisdiction  to have
arisen solely and directly as a result of the willful misconduct or bad faith of
such Indemnitee.
<PAGE>

     10.  Governing  Law;  Jurisdiction;  Waiver of Jury  Trial.  This Note and,
unless  explicitly  provided  otherwise  therein,  each of the  other  Operative
Documents,  including  the  validity  hereof  and  thereof  and the  rights  and
obligations  of the parties  hereunder and  thereunder,  and all  amendments and
supplements  hereof and  thereof  and all waivers  and  consents  hereunder  and
thereunder,  shall be construed in accordance  with and governed by the domestic
substantive laws of the State of New York without giving effect to any choice of
law or conflicts of law  provision or rule that would cause the  application  of
the domestic substantive laws of any other jurisdiction.  The Operating Company,
to the extent that it may lawfully do so, hereby consents to service of process,
and to be sued, in the State of New York and consents to the jurisdiction of the
courts of the State of New York and of the United States District Courts for the
Southern  District of New York, as well as to the  jurisdiction of all courts to
which an appeal  may be taken  from such  courts,  for the  purpose of any suit,
action or other  proceeding  arising out of any of its obligations  hereunder or
thereunder or with respect to the transactions  contemplated  hereby or thereby,
and expressly  waives any and all objections it may have as to venue in any such
courts.  The  Operating  Company  further  agrees that a summons  and  complaint
commencing  an action or  proceeding  in any of such  courts  shall be  properly
served  and  shall  confer  personal  jurisdiction  if served  personally  or by
certified  mail to it at its  address  set  forth in  Section 11.6  hereof or as
otherwise provided under the laws of the State of New York.  Notwithstanding the
foregoing,  each Company agrees that nothing  contained in this Section 10 shall
preclude the  institution  of any such suit,  action or other  proceeding in any
jurisdiction other than the State of New York. THE OPERATING COMPANY IRREVOCABLY
WAIVES  ALL  RIGHT TO A TRIAL BY JURY IN ANY SUIT,  ACTION  OR OTHER  PROCEEDING
INSTITUTED BY OR AGAINST SUCH COMPANY IN RESPECT OF ITS OBLIGATIONS HEREUNDER OR
THEREUNDER OR THE TRANSACTIONS CONTEMPLATED HEREBY OR THEREBY.

     11. General Provisions.

     11.1 This Note (together with the other Operative  Documents)  embodies the
entire  agreement  and  understanding  among the  Holder and the  Companies  and
supersedes  all prior  agreements  and  understandings  relating  to the subject
matter hereof.

     11.2 Each  covenant  contained  herein  and in each of the other  Operative
Documents  shall be construed  (absent an express  provision to the contrary) as
being independent of each other covenant  contained herein and therein,  so that
compliance  with any one  covenant  shall not (absent  such an express  contrary
provision) be deemed to excuse compliance with any other covenant.

     11.3  If any  provision  in  this  Note  or in any of the  other  Operative
Documents refers to any action taken or to be taken by an Person,  or which such
Person is prohibited from taking,  such provision  shall be applicable,  whether
such  action is taken  directly or  indirectly  by such  Person,  whether or not
expressly specified in such provision.
<PAGE>

     11.4 The Holder shall not be required to pursue any party hereto, including
any guarantor, before exercising any other such rights.

     11.5 If any of the  terms  or  provisions  of this  Note  shall  be  deemed
unenforceable,  the  enforceability  of the remaining terms and provisions shall
not be affected.

     11.6 All communications provided for herein and, unless explicitly provided
otherwise therein,  in any of the other Operative  Documents shall be in writing
and sent (a) by telecopy if the sender on the same day sends a  confirming  copy
of such  communication  by a  recognized  overnight  delivery  service  (charges
prepaid),  (b) by a recognized overnight delivery service (charges prepaid),  or
(c) by messenger.  Any such  communication must be sent (i) if to either Company
(or any Subsidiary of either Company), to such Company (or such Subsidiary) at:

                        PSC Inc.
                        675 Basket Road
                        Webster, New York 14580
                        Telephone (716) 265-1600
                        Fax (716) 265-6402
                        Attention:  William J. Woodard,
                                      Vice-President - Finance

or at such other address (or telecopy  number) as may be furnished in writing by
the Companies, to the Holder at:

                        Spectra-Physics, Inc.
                        108 Webster Building
                        3411 Silverside Road
                        Wilmington, Delaware 19810
                        Telephone:  (302) 478-4600
                        Fax:  (302) 478-8962
                        Attention:  Ms. Barbara Schoenberg

or at such other  address  as may be  furnished  to the  Companies  in  writing.
Communications  under this Section 11.6 shall be deemed given only when actually
received.

     11.7 The section  headings of this Note are for convenience  only and shall
not affect the meaning or interpretation of this Note or any provision hereof.

     11.8 This Note  shall  inure to the  benefit of and be  enforceable  by the
respective successors and assigns of the Holder.
<PAGE>

11.9 This Note is being  issued  pursuant to the  Acquisition  Agreement  and in
payment  of the  purchase  price  for  the US  Assets.  Pursuant  to the  Merger
Agreement,  immediately  after the issuance of this Note, the Operating  Company
will merge into Scanning and Scanning will be the surviving corporation.

     11.10 This Note is to be  guaranteed  by the  Holding  Company  and by each
Subsidiary of the Holding  Company  (other than any Foreign  Subsidiary  and the
Operating Company), including any Person which hereafter becomes a Subsidiary of
the Holding Company (other than any Foreign Subsidiary), pursuant to a guarantee
substantially  in  the  form  of  Exhibit  A  attached  hereto  (each,  a  "Note
Guarantee";  collectively, the "Note Guarantees"). The Holding Company, and each
other Person signing a Note Guaranty,  by execution  thereof,  agrees to perform
each of the provisions hereof applicable thereto.

     11.11 Any term of this  Note  and,  unless  explicitly  provided  otherwise
therein,  of any of the other  Operative  Documents may, with the consent of the
Companies,  be amended, or compliance  therewith may be waived, in writing only,
by the Holder,  provided  that no such  amendment  or waiver  shall extend to or
affect  any  obligation  not  expressly  amended  or waived or impair  any right
consequent thereon.

     12. Defined Terms.

     12.1 The term  "Acquisition  Agreement"  shall mean that certain  Asset and
Stock Purchase  Agreement  dated May 20, 1996, by and among PSC Inc., a New York
corporation, the Holder and Spectra-Physics Holding, S.A., a French corporation,
as amended, modified, and supplemented from time to time.

     12.2 The term  "Affiliate"  shall mean Affiliate as defined in Section 15.1
of the Securities  Purchase  Agreements  but shall not include  Spectra-Physics,
Inc., a Delaware corporation or any of its affiliates.

     12.3 The term "Default" shall mean any condition or event which constitutes
or, after notice or lapse of time or both, would constitute an Event of Default.

     12.4 The term "Event of Default"  shall have the meaning  ascribed to it in
Section 8 hereof.

     12.5 The term  "Material  Adverse  Change"  shall mean a  material  adverse
change in or effect  upon any of (a) the  condition  (financial  or  otherwise),
business,  performance,  operations,  properties,  profits or  prospects  of the
Operating Company individually, the Operating Company and its Subsidiaries taken
as one  enterprise,  the  Holding  Company  and its  Subsidiaries  taken  as one
enterprise  or any of the  material  assets or  liabilities  acquired or assumed
pursuant  to  the  Acquisition   Agreement,   (b)  the  legality,   validity  or
enforceability  of the Operative  Documents,  (c) the rights and remedies of the
Holder, or (d) the ability of the Holding Company,  the Operating Company or any
of the other Material  Subsidiaries to perform its obligations  under any of the
Operative Documents and/or to comply with any of the terms thereof applicable to
it.
<PAGE>

     12.6 The term "Material  Default" shall mean (a) any default in the payment
when due of fees or expenses that constitute  Superior  Indebtedness  and/or (b)
any default  under  Section  6.01(f) of the Bank Credit  Agreement and any other
Event of Default  (other than an Event of Default under Section  6.01(a))  under
the Bank  Credit  Agreement,  or a default or Event of Default,  as  applicable,
under the analogous provisions of any Refinancing Agreement relating to the Bank
Credit  Agreement and/or (c) any default under Sections  16.1(e),  (f) or (g) of
the Securities Purchase Agreements and any other Event of Default (other than an
Event of Default under Section 16.1(a) or 16.1(b)) under the Securities Purchase
Agreements, or a default or Event of Default, as applicable, under the analogous
provisions of any  Refinancing  Agreement  relating to the  Securities  Purchase
Agreements.

     12.7 The term  "Notes" or any  reference  thereto in any  provision  hereof
which has been incorporated by reference to the Securities  Purchase  Agreements
shall mean and be deemed to refer to this Note.

     12.8 The terms  "Note  Guarantee"  and  "Note  Guarantees"  shall  have the
meanings ascribed to them in Section 11.10 hereof.

     12.9 The term  "Operating  Company"  shall  mean PSC  Acquisition  Inc.,  a
Delaware  corporation,  and any successor thereto  including,  after the Merger,
Scanning.

     12.10 The term "Operative Documents" shall mean this Note together with the
Note  Guarantees,  each as it may  from  time to time be  amended,  modified  or
supplemented.

     12.11 The term "Prime Rate" shall mean the rate  established  by CoreStates
Bank,  N.A.  ("CoreStates")  from time to time as its "base or prime  rate." The
Prime Rate is not necessarily CoreStates's most favored rate.

     12.12  The term  "Refinancing  Agreement"  shall  mean (i) the  Refinancing
Agreement as defined in the Securities  Purchase  Agreements,  and (ii) the loan
agreements,  documents and instruments, if any, entered into by the Companies in
compliance  with this Note,  pursuant to which  Indebtedness  is incurred by the
Companies  which  refinances  or refunds all or any portion of the  Indebtedness
under the Subordinated Debt Documents,  provided that all of such refinancing or
refunding  Indebtedness  is  permitted  under  Section  7 hereof  and  provided,
further,  that the terms of such loan  agreements,  documents  and  instruments,
taken as a whole,  are no more  restrictive  upon the  Obligors  and are no more
adverse to the  interests  of the Holder  than  those of the  Subordinated  Debt
Documents.
<PAGE>

     12.13 The term "Restricted Payment" as applied to any Person shall mean:

     (a) any dividend or other distribution,  direct or indirect,  on account of
any  Shares of such  Person now or  hereafter  outstanding  (including,  without
limitation,  Preferred Shares) or any securities convertible into or exercisable
or  exchangeable  for such Shares or any rights,  options or warrants to acquire
any such Shares,  except (i) any such  dividend or  distribution  payable to the
Holding  Company,  the  Operating  Company  and/or any  Wholly-Owned  Subsidiary
Guarantor and (ii) a pro rata distribution payable to all of the stockholders of
the Holding  Company solely in shares of Common Stock of the Holding Company and
as a result of which there is no change in the  relative  ownership  interest of
any stockholder in the Holding Company or any of such stockholder's rights; and

     (b) any redemption,  retirement,  purchase or other acquisition,  direct or
indirect, of any Shares of such Person now or hereafter outstanding  (including,
without  limitation,  Preferred  Shares) or any securities  convertible  into or
exercisable or exchangeable  for such Shares or any rights,  options or warrants
to acquire any such Shares.

     12.14 The term "Securities  Purchase  Agreements"  shall mean those certain
Securities  Purchase  Agreements  dated  as of the  date  hereof  by  and  among
SpectraScan,   Inc.,  a  Delaware  corporation,  the  Holding  Company  and  the
institutional  investors  named therein with respect to the issuance and sale by
the  Operating  Company  to such  institutional  investors  of an  aggregate  of
$30,000,000  principal amount of its 11.25% Senior  Subordinated Notes due 2006,
as such Securities  Purchase  Agreements exist on the date hereof.  This Section
12.14  shall not be  interpreted  so as to restrict  the Holding  Company or its
Subsidiaries  from  entering  into any  amendment,  modification,  supplement or
waiver of the Securities Purchase  Agreements  permitted by the other provisions
hereof.

     12.15 The term  "Subordinated  Debt  Documents"  shall mean the  "Operative
Documents" as such term is defined in the Securities Purchase Agreements.

     12.16 The term "Subordinated  Indebtedness" shall mean the principal amount
of the  Indebtedness  evidenced by this Note,  together with any interest,  fee,
expense  and/or  other  amount  due  thereon or payable  with  respect  thereto,
including any such amounts payable by any guarantor of this Note.

     12.17  The  term  "Superior  Indebtedness"  shall  mean  (i)  the  Superior
Indebtedness under the Securities  Purchase  Agreements,  and (ii) the principal
amount of all Funded Debt and Current Debt of the  Operating  Company  under the
Subordinated  Debt  Documents or any  Refinancing  Agreement  relating  thereto,
together with any interest (including Accrued Bankruptcy Interest),  premium, if
any,  fee,  expense  and/or  other  amount due thereon or payable  with  respect
thereto,  including  any  such  amounts  payable  by  any  guarantor  under  the
Subordinated Debt Documents,  provided that the aggregate principal amount shall
at no time exceed  $31,500,000  minus the sum of all repayments of the principal
of the Indebtedness under the Subordinated Debt Documents.
<PAGE>

     12.18  Capitalized terms used herein and not otherwise defined herein shall
have the meanings ascribed to them in the Securities Purchase Agreements.

     IN WITNESS  WHEREOF,  the  Operating  Company has executed  this Note as an
instrument under seal as of the date first above written.

                                          PSC ACQUISITION INC.



                                          By:/s/ William J. Woodard
                                             Vice President, Finance


 
                                                                     Exhibit 4.5


                                NOTE GUARANTEE



     THIS NOTE GUARANTEE is made and granted this 12th day of July,  1996 by PSC
INC., a New York corporation ("Guarantor"),  to and in favor of SPECTRA-PHYSICS,
INC., a Delaware corporation ("SPI").


                                   BACKGROUND

     WHEREAS, SPI and Spectra-Physics  Holding, S.A., a French corporation,  and
Guarantor  have  entered into that certain  Asset and Stock  Purchase  Agreement
dated May 20, 1996 (the "Acquisition Agreement");

     WHEREAS, in accordance with the Purchase Agreement, PSC ACQUISITION INC., a
Delaware corporation and wholly-owned direct or indirect subsidiary of Guarantor
(the  "Company"),  is executing  and  delivering to SPI,  concurrently  with the
execution and delivery of this Note Guarantee, a certain Subordinated Promissory
Note of even date herewith (the "Note"); and

     WHEREAS,  after the  execution  and  delivery of this Note  Guarantee,  the
Company will merge with Spectra-Physics  Scanning Systems, Inc. ("Scanning") and
Scanning will remain as the surviving entity.


                                    AGREEMENT

     NOW THEREFORE, for value received and intending to be legally bound hereby,
the Guarantor  hereby  irrevocably  and  unconditionally  guarantees the due and
punctual  payment  and  performance  of  the  following   obligations  (each,  a
"Guaranteed Obligation" and collectively, the "Guaranteed Obligations") when and
as the same shall become due and payable in accordance  with the terms  thereof,
as the same may be amended, modified or supplemented from time to time:
<PAGE>

     The due and punctual payment of the principal of and interest on (including
     any interest  accruing after the  commencement  of any action or proceeding
     under the federal bankruptcy laws, as now or hereafter constituted,  or any
     other  applicable   domestic  or  foreign  federal  or  state   bankruptcy,
     insolvency  or other  similar law, and any other  interest  that would have
     accrued but for the  commencement  of such  proceeding,  whether or not any
     such interest is allowed as an  enforceable  claim in any such  proceeding)
     and fees and other amounts payable with respect to the Note.

     The Guarantor  hereby agrees that the  Guarantor's  liability  hereunder is
joint and several with any other  individual or entity (the "Other  Guarantors")
who may guarantee the Guaranteed Obligations or any part thereof.

     Notwithstanding  anything to the contrary  herein,  the  obligations of the
Guarantor  under the Note  Guarantee,  and the rights of the  holder  hereof are
subordinated to Superior  Indebtedness  and to the rights of the holders thereof
to the extent and in the manner specified in the Note.

     This Note Guarantee is an absolute,  primary,  unconditional,  irrevocable,
present  and  continuing  guarantee  of payment  (and not of  collectibility  or
performance  only),  is not  subject  to any  counterclaim,  setoff,  deduction,
withholding, diminution, abatement, recoupment, suspension, deferment, reduction
or  defense  and is in no way  conditioned  or  contingent  upon any  attempt to
collect from the Company or any Other  Guarantor or upon any other  condition or
contingency;  if the Company shall fail so to pay  punctually  the principal of,
interest  or other  amount on any  Guaranteed  Obligation,  the  Guarantor  will
immediately  pay the same to the holder  thereof,  with  interest (to the extent
permitted by applicable law) on any overdue amount, at a rate per annum equal to
2% above the non-default rate otherwise applicable thereto, until paid. Payments
due on the Guaranteed  Obligations  shall be overdue for purposes  hereof if not
made on the originally scheduled date of payment therefor, without giving effect
to any applicable  grace period.  Payments by the Guarantor  hereunder  shall be
made in lawful money of the United  States of America and may be required by the
holder of any Guaranteed Obligation on any number of occasions.
<PAGE>

     This Note  Guarantee  shall remain in full force and effect  without regard
to, and the  obligations  of the  Guarantor  hereunder  shall not be affected or
impaired by: (a) any  amendment or  modification  of or  supplement to the Note,
including,  without  limitation,  any amendment,  modification and/or supplement
which  changes  the  timing or  amount of any  payment  (or  prepayment)  of the
principal  of or  interest  on, or any other  terms of  payment  of,  any of the
Guaranteed  Obligations;  (b) any  extension,  indulgence  or  other  action  or
inaction  in respect of any of the Note;  (c) any  default by the  Company,  the
Guarantor or any Other Guarantor  under,  or any invalidity or  unenforceability
of, or any  irregularity  or other  defect in,  the Note;  (d) any  exercise  or
non-exercise of any rights,  remedy,  power or privilege in respect of the Note;
(e) any  transfer  of the  assets of the  Company,  the  Guarantor  or any Other
Guarantor to, or any  consolidation  or merger of the Company,  the Guarantor or
any Other Guarantor with or into, any other Person (as defined in the Note); (f)
any bankruptcy,  insolvency,  reorganization or similar proceeding  involving or
affecting the Company,  the Guarantor or any Other Guarantor;  (g) any change in
or addition to or partial or complete  release of any  collateral  securing  the
Guaranteed Obligations or any partial or complete release of any Other Guarantor
or other Person primarily or secondarily liable for the Guaranteed  Obligations;
(h) any change of circumstances,  whether or not foreseen or foreseeable, or any
impossibility  of  performance,  whether  through  acts  of God,  action  of any
governmental  authority  or  agency,  change  of law,  other  force  majeure  or
otherwise,  whether or not beyond the control of the Company, the Guarantor, any
Other Guarantor or any other Person; (i) any attachment,  claim, demand, charge,
Lien  (as  defined  in the  Note),  order,  process,  encumbrance  or any  other
happening or event or reason or any withholding or diminution at the source,  by
reason of any taxes,  assessments,  expenses,  obligations or liabilities of any
character,  foreseen or  unforeseen,  and  whether or not valid,  incurred by or
against any  Person,  or any  claims,  demands,  charges or Liens of any nature,

<PAGE>

foreseen or  unforeseen,  incurred by any  Person,  or against any sums  payable
under any of the Note,  so that such sums would be rendered  inadequate or would
be unavailable  to make the payments  therein  provided;  (j) the failure of the
Guarantor  to receive  any benefit or  consideration  from or as a result of its
execution,  delivery  and  performance  of this Note  Guarantee or (k) any other
circumstance  or cause,  whether  similar or dissimilar to any of the foregoing,
that might constitute a legal or equitable discharge or defense of the Guarantor
and whether or not the Guarantor shall have had notice or knowledge thereof,  it
being agreed by the  Guarantor  that for the  purposes  hereof,  the  Guaranteed
Obligations  shall be due and  payable  when and as the  Guaranteed  Obligations
shall be due and payable in accordance  with the terms  thereof  notwithstanding
that  collection or enforcement  thereof may be stayed or enjoined under any law
or may otherwise be impossible and notwithstanding that the Notes may then be or
have become invalid, void or voidable for any reason.

     The Guarantor hereby acknowledges receipt of a correct and complete copy of
the Note and consents to all of the terms and  provisions  thereof,  as the same
may be from time to time hereafter amended, modified or supplemented, and agrees
to perform and comply with all of the  covenants  contained  therein  applicable
thereto  as if it  were  a  party  thereto.  The  Guarantor  hereby  waives  (a)
presentment, demand for payment, and protest of non-payment, of any principal of
or  interest  or other  amount  on any  Guaranteed  Obligation;  (b)  notice  of
acceptance of this Note  Guarantee  and of  presentment,  demand,  and intent to
accelerate  and protest;  (c) notice of any default  under the Note or any other
agreement relating thereto; (d) demand for performance of observance of, and any
enforcement  of any  provisions  of, or any pursuit or  exhaustion  of rights or
remedies  against the Company,  the Guarantor,  any other Guarantor or any other
Person under the Note and any  requirements  of diligence or  promptness  on the

<PAGE>

part of any holder of any Guaranteed Obligation in connection therewith; and (e)
to the extent the  Guarantor  lawfully may do so, any and all other  demands and
notices of every kind and description with respect to the foregoing or which may
be  required to be given by any  statute,  or rule of law and any defense of any
kind  (other  than the  defense  of  payment)  which  the  Guarantor  may now or
hereafter have with respect to the Note or any other agreement relating thereto.
Without  limiting the generality of the foregoing,  no Person who is entitled to
the benefits of this Note  Guarantee  shall be required to make any demand upon,
or to pursue or exhaust any of its rights or remedies against,  the Company, any
Other Guarantor or any other Person or any collateral or other  security,  prior
to exercising any right  hereunder,  and no delay or omission on the part of any
such  Person  in  exercising  any right  under  the Note or any other  agreement
relating thereto shall operate as a waiver or relinquishment of such right.

     The Guarantor  hereby grants the holder of any  Guaranteed  Obligation  the
full power in the uncontrolled  discretion of such holder, without notice to the
Guarantor and without in any way affecting the liability of the Guarantor  under
this Note Guarantee:  (a) to waive compliance with and any default under, and to
consent  to any  amendment  or  change  of any  terms of the Note and any  other
agreement relating thereto,  including,  without  limitation,  any change in the
timing or amount of any payment (or  prepayment) of the principal of or interest
on, or any other terms of payment of, any of the Guaranteed Obligations; and (b)
to grant  extensions  or renewals  thereof and other  indulgences  with  respect
thereto,  and to  effect  releases,  compromises  or  settlements  with  respect
thereto.

     The  Guarantor  hereby  covenants  and agrees  that,  until the  Guaranteed
Obligations  are  indefeasibly  paid in full in  cash,  the  Guarantor  will not
enforce  or  otherwise  exercise  any  rights  of  reimbursement,   subrogation,
contribution or other similar rights against the Company, any Other Guarantor or
any other Person with respect to any Guaranteed Obligation or otherwise.

     The Guarantor will  reimburse the holder of any  Guaranteed  Obligation for
all  costs  of  collection  or  enforcement   (including,   without  limitation,
reasonable  attorneys'  fees and expenses)  incurred by such holder in enforcing
the obligations of the Guarantor hereunder.
<PAGE>

     This Note Guarantee shall continue to be effective or be reinstated, as the
case may be,  if at any time  any  amount  received  in  respect  of the Note is
rescinded or must  otherwise  be restored or returned by payee  thereof upon the
insolvency,  bankruptcy,  dissolution,  liquidation  or  reorganization  of  the
Company,  the Guarantor or any Other  Guarantor or upon the  appointment  of any
receiver or conservator of, or trustee or similar official for, the Company, the
Guarantor or any Other  Guarantor or any  substantial  part of the properties of
the Company, the Guarantor or any Other Guarantor,  or otherwise,  all as though
such payment had not been made.

     No amendment or waiver of any  provision of this Note  Guarantee or consent
to any default  under,  breach of or departure  from this Note  Guarantee by the
Guarantor  shall in any event be  effective  unless the same shall be in writing
and signed by the  Guarantor  and the holder of the Note and then such waiver or
consent  shall be effective  only in the specific  instance and for the specific
purpose for which given.

     All notices and other  communications under this Note Guarantee shall be in
writing and shall be addressed and  delivered or mailed in  accordance  with the
provisions of Section 11.6 of the Note.

     The Note  Guarantee,  including  the  validity  hereof  and the  rights and
obligations arising hereunder, and all amendments and supplements hereof and all
waivers  and  consents  hereunder  shall be  construed  in  accordance  with and
governed  by the  domestic  substantive  laws of the  State of New York  without
giving  effect to any choice of law of conflicts  of law  provision or rule that
would  cause  the  application  of the  domestic  substantive  laws of any other

<PAGE>

jurisdiction.  The  Guarantor,  to the extent that the Guarantor may lawfully do
so, hereby  consents to service of process,  and to be sued, in the State of New
York and consents to the jurisdiction of the courts of the State of New York and
of the United States  District  Court for the Southern  District of New York, as
well as to the  jurisdiction  of all courts of which an appeal may be taken from
such courts, for the purpose of any suit, action or other proceeding arising out
of any of the Guarantor's  obligations  hereunder,  and expressly waives any and
all  objections  the  Guarantor  may have as to venue  in any such  courts.  The
Guarantor  further  agrees that a summons and complaint  commencing an action or
proceeding  in any of such  courts  shall be  properly  served and shall  confer
personal jurisdiction if served personally or by certified mail to the Guarantor
in care of the Companies at the address of the Company set forth in Section 11.6
of the Note or as  otherwise  provided  under the laws of the State of New York.
Notwithstanding  the  foregoing,  the  Guarantor  agrees that nothing  contained
herein  shall  preclude  the  institution  of any  such  suit,  action  or other
proceeding in any jurisdiction other than the State of New York.

     THE GUARANTOR  IRREVOCABLY WAIVES ALL RIGHT TO A TRIAL BY JURY IN ANY SUIT,
ACTION OR OTHER PROCEEDING  INSTITUTED BY OR AGAINST THE GUARANTOR IN RESPECT OF
THE GUARANTOR'S OBLIGATIONS HEREUNDER.

     This Note Guarantee  (together with the Note) embodies the entire agreement
and  understanding  between  the  Guarantor  and the  holder  of the  Guaranteed
Obligations and supersedes all prior agreements and  understandings  relating to
the subject  matter  hereof.  In case any provision in this Note Guarantee or of
the Note shall be invalid, illegal or unenforceable,  the validate, legality and
enforceability  of the remaining  provisions hereof and thereof shall not in any
way be affected or impaired thereby.

     All or any of the  rights  of  the  holder  of any  Guaranteed  Obligations
hereunder may be  transferred  or assigned at any time and shall be  transferred
and assigned  upon the  transfer of any  Guaranteed  Obligation  whether with or
without the consent of or notice to the Guarantor.
<PAGE>

     IN WITNESS  WHEREOF,  the  undersigned has executed and delivered this Note
Guarantee on the day and year first above written.


                                    PSC INC.



                                    By:  /s/ William J. Woodard
                                             William J. Woodard
                                             Vice President, Finance
                                                and Treasurer





                                                                    Exhibit 10.1
                                                       



- - ------------------------------------------------------------------------------
- - ------------------------------------------------------------------------------


- - ------------------------------------------------------------------------------









                                   PSC INC.


                               SPECTRASCAN, INC.



       $30,000,000 11.25% Senior Subordinated Notes of SpectraScan, Inc.
                               due June 30, 2006

         Warrants for 975,000 Shares of Common Stock, $0.01 par value,
                      of PSC Inc. (subject to adjustment)






                                ______________

                         SECURITIES PURCHASE AGREEMENT
                                ______________






                                 July 12, 1996


- - ------------------------------------------------------------------------------


- - ------------------------------------------------------------------------------


<PAGE>

                               TABLE OF CONTENTS

                                                                          Page


        1.    Authorization of Securities; Other Purchasers; etc...........-1-

        2.    Sale and Purchase of Securities..............................-2-

        3.    Closing......................................................-2-

        4.    Conditions to Closing........................................-3-
              4.1.  Representations and Warranties Correct.................-3-
              4.2.  Performance; No Default................................-3-
              4.3.  Related Transactions...................................-3-
              4.4.  Compliance Certificate.................................-5-
              4.5.  Note Guarantees........................................-5-
              4.6.  Opinions of Counsel for the Companies and the Sellers..-5-
              4.7.  Opinion of Your Special Counsel........................-5-
              4.8.  Certain Additional Documents to be Delivered at or Prior
                    to the Closing.........................................-5-
              4.9.  Sale of Securities to Other Purchasers.................-6-
              4.10. Legal Investment; Certificate..........................-6-
              4.11. Sale and Purchase Not Forbidden by Law.................-6-
              4.12. Payment of Closing Fee and Transactions Costs..........-6-
              4.13. Proceedings and Documents..............................-6-

        5.    Representations and Warranties...............................-6-
              5.1.  Organization, Standing, etc. of the Companies..........-6-
              5.2.  Subsidiaries...........................................-7-
              5.3.  Qualification..........................................-7-
              5.4.  Business, etc..........................................-7-
              5.5.  Shares; Stockholders...................................-8-
              5.6.  Financial Statements...................................-9-
              5.7.  Changes; Solvency, etc.................................-9-
              5.8.  Tax Returns and Payments..............................-10-
              5.9.  Funded Debt, Current Debt, Liens, Investments and
                    Transactions with Affiliates..........................-10-
              5.10. Title to Properties; Liens; Leases....................-11-
              5.11. Litigation, etc.......................................-11-
              5.12. Valid and Binding Obligations; Compliance with Other
                    Instruments, Borrowing Restrictions, etc..............-11-
              5.13. ERISA.................................................-12-
              5.14. Consents, etc.........................................-13-
              5.15. Proprietary Rights; Licenses..........................-14-


<PAGE>

              5.16. Offer of Securities; Investment Bankers...............-14-
              5.17. Government Regulation.................................-14-
              5.18. Labor Relations; Suppliers, Distributors and Customers-14-
              5.19. Voting Provisions.....................................-15-
              5.20. Disclosure............................................-15-

        6.    Use of Proceeds.............................................-15-

        7.    Financial Statements and Information........................-16-

        8.    Inspection..................................................-20-

        9.    Prepayment of Notes.........................................-20-
              9.1.  Required Annual Prepayment Without Premium of Notes...-20-
              9.2.  Optional Prepayment With Premium of Notes.............-20-
              9.3.  Optional Prepayment With Premium of the Notes with the
                    Proceeds of Certain Public Offerings..................-20-
              9.4.  Allocation of Partial Prepayments of Notes............-21-
              9.5.  Notice of Optional Prepayments of Notes...............-21-
              9.6.  Maturity; Accrued Interest; Surrender, etc. of Notes..-21-
              9.7.  Purchase of Notes.....................................-21-
              9.8.  Payment on Non-Business Days..........................-22-
              9.9.  Application of Notes in Satisfaction of Exercise Price of
                    Warrants..............................................-22-

        10.   Subordination of Notes......................................-22-
              10.1. Certain Definitions...................................-22-
              10.2. Subordinated Indebtedness Subordinated to Superior
                    Indebtedness; No Amendments...........................-23-
              10.3. Dissolution, Liquidation, Reorganization, etc.........-24-
              10.4. No Payments With Respect to Subordinated Indebtedness
                    in Certain Circumstances..............................-25-
              10.5. Payments and Distributions Received...................-27-
              10.6. Subrogation...........................................-27-
              10.7. Notice................................................-28-
              10.8. Subordination Not Affected, etc.......................-28-
              10.9. Obligations Unimpaired................................-28-
              10.10. Holders of Subordinated Indebtedness Entitled to Assume
                    Payments Not Prohibited in Absence of Notice..........-29-
              10.11. Limitation on Right of Action........................-29-

        11.   Registration, etc...........................................-30-
              11.1. Shelf Registration....................................-30-
              11.2. Incidental Registration...............................-31-
              11.3. Permitted Registration................................-32-



<PAGE>

              11.4. Registration Procedures...............................-33-
              11.5. Indemnification.......................................-33-
              11.6. Restrictions on Other Agreements......................-34-

        12.   Put Rights..................................................-35-
              12.1. Put Rights............................................-35-

        13.   Board Inspection Rights.....................................-37-

        14.   Covenants of the Companies..................................-37-
              14.1. Books of Record and Account; Reserves.................-37-
              14.2. Payment of Taxes; Existence; Maintenance of Properties;
                    Compliance with Laws; Lines of Business; Proprietary
                    Rights................................................-38-
              14.3. Insurance.............................................-39-
              14.4. Limitation on Discount or Sale of Receivables.........-39-
              14.5. Limitation on Funded Debt.............................-39-
              14.6. Limitation on Restricted Payments; Payments on Seller
                    Notes.................................................-40-
              14.7. Certain Financial Covenants...........................-41-
              14.8. Limitation on Investments.............................-43-
              14.9. Limitation on Liens...................................-44-
              14.10. Limitation on Transactions with Affiliates...........-45-
              14.11. Limitation on Rental Obligations; Capital Expenditures;
                    Hedge Agreements......................................-45-
              14.12. Limitation on Issuance of Shares of Subsidiaries.....-46-
              14.13. Limitation on Subsidiary's Consolidation or Merger...-46-
              14.14. Limitation on Holding Company's Consolidation or Merger-47-
              14.15. Limitation on Disposition of Property................-47-
              14.16. Modification of Certain Documents, Agreements and
                    Instruments...........................................-48-
              14.17. Further Assurances;..................................-49-
              14.18. Additional Subsidiaries..............................-49-
              14.19 Limitation on Tax Consolidation.......................-49-

        15.   Definitions.................................................-49-
              15.1. Definitions of Capitalized Terms......................-49-
              15.2. Other Definitions.....................................-63-
              15.3. Accounting Terms and Principles; Laws.................-64-

        16.   Remedies....................................................-64-
              16.1. Events of Default Defined; Acceleration of Maturity...-64-
              16.2. Suits for Enforcement, etc............................-69-
              16.3. Remedies Cumulative...................................-70-
              16.4. Remedies Not Waived...................................-70-



<PAGE>

              16.5. Application of Payments...............................-70-

        17.   Registration, Transfer and Exchange of Securities...........-70-

        18.   Replacement of Securities...................................-71-

        19.   Amendment and Waiver........................................-71-

        20.   Method of Payment of Securities.............................-72-

        21.   Expenses; Indemnity.........................................-72-

        22.   Taxes.......................................................-73-

        23.   Communications..............................................-73-

        24.   Survival of Agreements, Representations and Warranties, etc.-74-

        25.   Successors and Assigns; Rights of Other Holders.............-74-

        26.   Purchase for Investment; ERISA..............................-74-

        27.   Governing Law; Jurisdiction; Waiver of Jury Trial...........-76-

        28.   Rule 144A...................................................-77-

        29.   Miscellaneous...............................................-77-

Schedule I          Schedule of Purchasers

Exhibit 1(a)(i)     Form of Note
Exhibit 1(a)(ii)    Form of Note Guarantee
Exhibit 1(b)        Form of Warrant
Exhibit 3           Wire Instructions
Exhibit 4.3(a)      Form of Seller Notes
Exhibit 4.6(a)      Opinion of Boylan, Brown, Code, Fowler, Vidgor and 
                       Wilson, LLP
Exhibit 4.6(b)      Opinion of Fried, Frank, Harris, Shriver & Jacobson
Exhibit 4.6(c)      Opinion of Dechert Price & Rhoads
Exhibit 4.7         Opinion of Choate, Hall & Stewart
Exhibit 4.8         Additional Documents to be Delivered at or Prior
                       to the Closing
Exhibit 5.2         Subsidiaries
Exhibit 5.5(a)      Shares; Stockholders
Exhibit 5.5(b)      Other Securities; Commitments; Preemptive and Registration
                       Rights
Exhibit 5.6(a)      Financial Statements
Exhibit 5.6(b)      Projections

<PAGE>

Exhibit 5.6(c)      Pro Forma Unaudited Balance Sheet
Exhibit 5.7         Restricted Payments
Exhibit 5.8         Taxes
Exhibit 5.9         Funded Debt, Current Debt, Liens, Investments,
                       Transactions with Affiliates and Leases
Exhibit 5.11(a)     Litigation
Exhibit 5.11(b)     Other Litigation
Exhibit 5.15        Proprietary Rights and Licenses
Exhibit 5.19        Voting Provisions
Exhibit 6           Use of Proceeds
Exhibit 7(c)(v)     Information as to New Subsidiaries
Exhibit 15.1        Pro Forma EBITDA



<PAGE>

                                 PSC INC.
                             SPECTRASCAN, INC.
                              675 Basket Road
                          Webster, New York 14580




                                                             July  12, 1996



THE EQUITABLE LIFE ASSURANE SOCIETY
      OF THE UNITED STATES (1)
c/o Alliance Capital Management L.P.
135 West 50th Street, 6th Floor
New York, New York  10020

Ladies and Gentlemen:

     PSC INC., a New York corporation (the "Holding Company"),  and SPECTRASCAN,
INC., a Delaware corporation (formerly named  Spectra-Physics  Scanning Systems,
Inc.,  the surviving  corporation of the Merger  hereinafter  referred to) and a
Wholly-Owned  Subsidiary of the Holding Company (the  "Operating  Company") (the
Holding Company and the Operating Company are sometimes collectively referred to
herein as the "Companies" and each as a "Company"),  jointly and severally agree
with you as  follows.  Certain  capitalized  terms used  herein  are  defined in
section 15.

1.    Authorization of Securities; Other Purchasers; etc.

          (a) The  Operating  Company has  authorized  the issue and sale of its
     11.25% Senior  Subordinated Notes due June 30, 2006 (herein,  together with
     any notes issued in exchange  therefor or replacement  thereof,  called the
     "Notes") in the aggregate principal amount of $30,000,000. The Notes are to
     be substantially  in the form of Exhibit 1(a)(i) attached hereto.  Interest
     is payable on the Notes,  quarterly  in arrears on each March 31,  June 30,
     September  30 and  December  31,  commencing  September  30,  1996,  and at
     maturity.  In no event  shall the  amount  paid or agreed to be paid by the
     Operating  Company as  interest  and premium on any Note exceed the highest
     lawful rate permissible under any law applicable thereto.  The Notes are to
     be guaranteed by the Holding  Company and by each Subsidiary of the Holding
     Company  (other than any Foreign  Subsidiary  and the  Operating  Company),
     including  any Person which  hereafter  becomes a Subsidiary of the Holding




(1)  There  will  be  separate  but  identical  Securities  Purchase  Agreements
addressed to each of the Other Purchasers.
<PAGE>

     Company  (other  than any  Foreign  Subsidiary),  pursuant  to a  guarantee
     substantially  in the form of Exhibit  1(a)(ii)  attached  hereto (each,  a
     "Note Guarantee"; collectively, the "Note Guarantees").

          (b) The  Holding  Company  has  authorized  the  issue and sale of its
     warrants  evidencing  rights to  purchase  975,000  shares of Common  Stock
     (subject to  adjustment)  (herein,  together  with any  warrants  issued in
     exchange  therefor or  replacement  thereof,  called the  "Warrants").  The
     Warrants are to be  exercisable on or after July 12, 1997, are to terminate
     at the close of business on July 12,  2006 and are to be  substantially  in
     the form of Exhibit 1(b) attached hereto.

          (c) The  Securities are to be issued under this Agreement and separate
     Securities Purchase Agreements (the "Other Securities Purchase Agreements")
     identical  herewith (except as to the name and address of each of the other
     purchasers)  being entered into  concurrently by the Companies with each of
     the other purchasers (the "Other  Purchasers") named in Schedule I attached
     hereto. The issue of Securities to you and the issues of Securities to each
     of the Other  Purchasers  are separate  transactions,  and you shall not be
     liable or responsible for the acts or defaults of the Other Purchasers.

2. Sale and Purchase of  Securities.  The  Companies  will issue and sell to you
and,  subject  to the terms  and  conditions  hereof  and in  reliance  upon the
representations  and  warranties  of the Companies  contained  herein and in the
other Operative Documents,  you will purchase from the Companies, at the Closing
specified  in section 3, such  Securities  as are  specified  on that portion of
Schedule I attached hereto as is applicable to you. The aggregate purchase price
of the Securities shall be $30,000,000, which shall be allocated (a) $29,400,000
to the  Notes  and  (b) $600,000  to the  Warrants.  The  Companies,  the  Other
Purchasers  and you agree  that the values  ascribed  to the  Securities  (which
values shall be used by the Companies,  the Other Purchasers and you, as well as
any subsequent holder of any of the Securities, for all purposes,  including the
preparation  of  tax  returns)  shall  be  determined  in  accordance  with  the
foregoing.

3.  Closing.  The closing of the sale and purchase of the  Securities  hereunder
(the  "Closing")  shall  take  place at the  office of  Messrs.  Choate,  Hall &
Stewart,  Exchange Place, 53 State Street, Boston,  Massachusetts 02109, on July
12,  1996 or such other date to which you may agree (the  "Closing  Date").  The
Closing  shall occur not later than 11:00 A.M.  Boston  time (your  reinvestment
deadline) on the Closing Date. At the Closing, the Companies will deliver to you
the  Securities  to be  purchased by you at the Closing  against  payment of the
purchase  price thereof to (or for the benefit of) the Companies in  immediately
available funds in accordance with the wire  instructions set forth on Exhibit 3
attached  hereto.  Delivery  of the  Securities  to be  purchased  by you at the
Closing  shall be made in the form of one or more  Notes and  Warrants,  in such
denominations  and  registered  in such  names as are  specified  on  Schedule I
attached hereto,  and in each case dated and, in the case of each Note,  bearing
interest from,  the Closing Date. If at the Closing the Companies  shall fail to

<PAGE>

tender the Securities to be delivered to you thereat as provided  herein,  or if
at the Closing any of the conditions  specified in section 4 shall not have been
fulfilled to your  reasonable  satisfaction,  you shall,  at your  election,  be
relieved  of all  further  obligations  under this  Agreement,  without  thereby
waiving  any  other  rights  you may  have by  reason  of such  failure  or such
non-fulfillment.

4. Conditions to Closing. Your obligation to purchase and pay for the Securities
to be purchased by you hereunder at the Closing is subject to the fulfillment to
your satisfaction, prior to or at the Closing, of the following conditions:

     4.1.  Representations  and  Warranties  Correct.  The  representations  and
warranties  made by the Companies  herein and in the other  Operative  Documents
shall have been  correct when made and shall be correct at and as of the time of
the  Closing  (after  giving  effect  to  the  transactions  consummated  at the
Closing).

     4.2.  Performance;  No Default.  The  Companies  shall have  performed  all
agreements  and complied with all conditions  contained  herein and in the other
Operative  Documents  required to be performed or complied with by them prior to
or at the  Closing,  and at the  time of the  Closing,  no  Default  or Event of
Default shall exist and no condition shall exist which has resulted in, or could
reasonably be expected to result in, a Material Adverse Change.

      4.3.  Related Transactions.

          (a)  Pursuant  to and in  accordance  with the  terms of the Asset and
     Stock  Purchase  Agreement  dated May 20,  1996 by and  among  the  Holding
     Company, Spectra-Physics, Inc., a Delaware corporation ("Spectra-Physics"),
     and Spectra-Physics  Holding,  S.A., a French corporation ("Spectra SA" and
     collectively  with  Spectra-Physics,  the "Sellers")  (such Asset and Stock
     Purchase Agreement, as amended, modified and supplemented from time to time
     in  accordance  with  section  14.16 of this  Agreement,  the  "Acquisition
     Agreement"),  (i) Spectra-Physics shall have sold to PSC Acquisition, Inc.,
     a Delaware corporation and a Wholly-Owned Subsidiary of the Holding Company
     ("Acquisition  Corp.") all of the issued and outstanding  shares of capital
     stock (and all securities  convertible  into or exercisable or exchangeable
     for such  capital  stock) of  Spectra-Physics  Scanning  Systems,  Inc.,  a
     Delaware corporation  ("Scanning") (such shares, the "Scanning Shares") and
     the US Assets (as defined in the  Acquisition  Agreement),  (ii) Spectra SA
     shall have sold to the Holding  Company  all of the issued and  outstanding
     shares of capital  stock of TXCOM  S.A.,  a French  corporation  ("TxCom"),
     owned by Spectra S.A.  (the "TxCom  Shares")  (being 7,235 shares of common
     stock  representing  72% of the issued  and  outstanding  capital  stock of
     TxCom) and shall have assigned to the Holding  Company the TxCom  Contracts
     (as  defined  in  the   Acquisition   Agreement),   and  (iii)  the  Seller
     Subsidiaries (as defined in the Acquisition  Agreement) shall have sold the
     International Assets (as defined in the Acquisition Agreement), subject
<PAGE>

     to the Assumed  International  Liabilities  (as defined in the  Acquisition
     Agreement),  to certain  Wholly-Owned  Subsidiaries  of the Holding Company
     (the purchase and sale of securities and assets pursuant to the Acquisition
     Agreement  are  referred  to  herein   collectively  as  the   "Stock/Asset
     Purchase").  Pursuant to and in  accordance  with the Plan and Agreement of
     Merger of even date by and between  Acquisition  Corp.  and  Scanning  (the
     "Merger  Agreement") (the Acquisition  Agreement,  the Merger Agreement and
     the other  agreements,  documents  and  instruments  executed in connection
     therewith,  all as amended,  modified and supplemented from time to time in
     accordance with section 14.16 of this Agreement, are sometimes collectively
     referred to as the "Acquisition  Documents"),  Acquisition Corp. shall have
     been merged with and into Scanning and the  Operating  Company shall be the
     surviving  corporation,  all as contemplated  by the Merger  Agreement (the
     "Merger")  (the  Stock/Asset  Purchase  and  the  Merger  are  collectively
     referred to as the "Acquisition"). The Certificate of Merger related to the
     Merger shall have been filed with all necessary  governmental  authorities,
     including,  without  limitation,  the  Secretary  of State of the  State of
     Delaware,   and  you  shall  have  received  evidence  of  same  reasonably
     satisfactory to you. No condition  under any of the  Acquisition  Documents
     for the  benefit of either of the  Companies  shall have been  waived.  The
     aggregate  purchase  price to be paid to the Sellers under the  Acquisition
     Agreement  in  respect of the  Scanning  Shares,  the US Assets,  the TxCom
     Shares and the  International  Assets,  shall not  exceed (i)  $120,000,000
     payable in cash at the  Closing  (subject  to  adjustment  as  provided  in
     sections 1.4 and 1.6 of the  Acquisition  Agreement),  (ii) the issuance of
     $5,000,000   aggregate   principal   amount  of  Subordinated   Installment
     Promissory Notes of the Operating Company due 2001, which notes shall be in
     the form of Exhibit 4.3(a) attached hereto and subordinated to the Notes on
     terms and conditions satisfactory to you (such notes, as amended,  modified
     and supplemented from time to time in accordance with section 14.16 of this
     Agreement, the "Seller Notes"), (iii) shares of Common Stock of the Holding
     Company  having an aggregate  fair market value  (determined  in accordance
     with  the  Acquisition  Agreement)  equal  to  $10,000,000,   and  (iv) the
     assumption  of  the  Assumed   International   Liabilities.   Each  of  the
     Acquisition   Documents   shall  be  in  form  and   substance   reasonably
     satisfactory to you in all material respects.

          (b)  The  capitalization  of each  Company  shall  be in all  respects
     satisfactory  to you.  Without  limiting the  generality of the  foregoing,
     after giving effect to the transactions  contemplated hereby, the Companies
     shall not have any Funded Debt or Current Debt other than that evidenced by
     the Notes and that which is specified on Exhibit 5.9 attached hereto.

          (c)  Pursuant  to and in  accordance  with  the  terms  of the  Credit
     Agreement dated as of the date hereof (such agreement, as amended, modified
     and supplemented from time to time in compliance with section 14.16 of this
     Agreement, the "Bank Credit Agreement") among Acquisition Corp., the
<PAGE>

     Holding  Company,  as  guarantor,  and the initial  lenders  named  therein
     (together  with their  respective  successors  and  assigns  under the Bank
     Credit Agreement,  the "Banks") and Fleet Bank, as initial issuing bank and
     administrative  agent (the Bank Credit Agreement and the other  agreements,
     documents  and  instruments  executed in  connection  therewith or pursuant
     thereto  (including  any Hedge  Agreements  (as  defined in the Bank Credit
     Agreement)), all as amended, modified and supplemented from time to time in
     compliance with section 14.16 of this Agreement, are sometimes collectively
     referred to as the "Bank Credit  Documents"),  the Operating  Company shall
     have established a senior revolving credit facility and shall have borrowed
     not less than  $80,000,000  under two separate term loans maturing June 30,
     2001 and December 31, 2002, respectively.  The Banks' commitment under such
     revolving  credit facility shall be  $20,000,000,  and shall expire on June
     30, 2001. The aggregate amount of the Operating  Company's unused borrowing
     availability  immediately following the Closing under such revolving credit
     facility  shall  be not  less  than  $5,000,000.  The  collateral  for such
     revolving credit facility and term loans shall consist of all assets of the
     Companies and their Subsidiaries (other than any Foreign Subsidiary).

     4.4.  Compliance  Certificate.  At the Closing,  you shall have received an
Officers'  Certificate,  dated the Closing Date,  certifying that the conditions
specified in sections 4.1 and 4.2 have been fulfilled.

     4.5. Note Guarantees.  At the Closing,  the Holding Company and each of the
Subsidiaries of the Holding  Company (other than any Foreign  Subsidiary and the
Operating Company) shall have executed and delivered to you the Note Guarantees.

     4.6. Opinions of Counsel for the Companies and the Sellers. At the Closing,
you shall have  received (a) an opinion,  dated the Closing  Date,  from Messrs.
Boylan,  Brown, Code, Fowler, Vidgor and Wilson, LLP, counsel for the Companies,
substantially  in the form of Exhibit 4.6(a)  attached  hereto,  (b) an opinion,
dated the Closing Date, from Messrs.  Fried, Frank, Harris,  Shriver & Jacobson,
intellectual  property  counsel to the Companies,  substantially  in the form of
Exhibit 4.6(b) attached  hereto,  and (c) a letter from Messrs.  Dechert Price &
Rhoads,  counsel  to the  Sellers,  authorizing  you to  rely on  their  opinion
delivered pursuant to the Acquisition Agreement.
 
     4.7.  Opinion  of Your  Special  Counsel.  At the  Closing,  you shall have
received an opinion, dated the Closing Date, from your special counsel,  Messrs.
Choate,  Hall &  Stewart,  substantially  in the form of  Exhibit  4.7  attached
hereto.
 
     4.8.  Certain  Additional  Documents  to be  Delivered  at or  Prior to the
Closing.  You shall have  received  the items  specified on Exhibit 4.8 attached
hereto, each of which shall be satisfactory to you in all material respects.
<PAGE>

     4.9. Sale of Securities to Other Purchasers.  At the Closing, the Companies
shall sell to the Other Purchasers the Securities to be purchased at the Closing
by the Other Purchasers pursuant to the Other Securities Purchase Agreements and
shall receive payment in full of the purchase price thereof.

     4.10. Legal Investment;  Certificate. Your purchase of the Securities to be
issued  pursuant hereto shall be permitted under the laws and regulations of any
jurisdiction  to which you are subject  (without  resort to any provision of any
such law permitting  limited  investments  by you without  restriction as to the
character of the  particular  investment),  and you shall,  if requested by you,
have received an Officers' Certificate, dated the Closing Date, certifying as to
such matters as you may request to enable you to determine whether your purchase
is so permitted.

     4.11.  Sale and Purchase Not Forbidden by Law. The offer,  issue,  sale and
delivery by the  Companies of the  Securities to be issued  pursuant  hereto and
your  purchase of such  Securities at the Closing shall not be prohibited by and
shall not subject you to any tax, penalty,  liability or other onerous condition
under or pursuant to any law, statute, rule or regulation.

     4.12.  Payment of Closing Fee and  Transactions  Costs. The Companies shall
have paid in immediately available funds (a) a non-refundable closing fee to you
and the  Other  Purchasers  in the  aggregate  amount of  $300,000  (1.0% of the
aggregate principal amount of the Notes), which shall be allocated among you and
the Other Purchasers in proportion to the aggregate principal amount of Notes to
be purchased  by you and the Other  Purchasers,  and (b) all fees,  expenses and
disbursements  incurred  by you  at or  prior  to the  time  of the  Closing  in
connection  with  the  transactions  contemplated  by the  Operative  Documents,
including,  without limitation,  the reasonable fees, expenses and disbursements
of your special counsel.

     4.13.  Proceedings  and Documents.  All  proceedings in connection with the
transactions  contemplated  by  the  Operative  Documents  and  all  agreements,
documents  and  instruments  incident to such  transactions  shall be reasonably
satisfactory in substance and form to you and your special counsel,  and you and
your  special  counsel  shall have  received all such  counterpart  originals or
copies  of  such  agreements,  documents  and  instruments  as you or  they  may
reasonably request.

5. Representations and Warranties. The Companies jointly and severally represent
and warrant that (after giving  effect to the  transactions  consummated  at the
Closing): 

     5.1.  Organization,  Standing,  etc. of the  Companies.  Each  Company is a
corporation duly organized, validly existing and in good standing under the laws
of its jurisdiction of  incorporation  and has all requisite power and authority
to own,  lease and  operate  its  properties,  to carry on its  business  as now
conducted,  and now proposed to be  conducted  as  described  in the  Disclosure
Document referred to in section 5.4, to execute, deliver and perform each of the

<PAGE>

Operative  Documents to which it is (or is to be) a party and to consummate  the
transactions  contemplated  by  the  Operative  Documents.  No  approval  of the
stockholders  of either  Company or any class  thereof is required in connection
therewith which has not previously been obtained.

     5.2.  Subsidiaries.  Exhibit 5.2 attached  hereto is a complete and correct
list of the Holding Company's Subsidiaries  (corporate or other) which correctly
specifies as to each such Subsidiary (a) its legal name, (b) the jurisdiction of
its  organization,  (c) each other  jurisdiction  in which it is qualified to do
business,  (d) the authorized Shares of each Subsidiary (specifying the class or
classes thereof) and the number of such Shares outstanding,  (e) the number (and
percentage)  of such  outstanding  Shares  owned by the Holding  Company and its
other  Subsidiaries  and (f) the  name of each  other  holder,  if any,  of such
Shares,  together  with the number (and  percentage)  held by such other holder.
Each  Subsidiary of the Holding  Company is a  corporation  or other entity duly
organized,  validly  existing  and  in  good  standing  under  the  laws  of the
jurisdiction  of its  organization  and has all requisite power and authority to
own,  lease  and  operate  its  properties,  to  carry  on its  business  as now
conducted,  and now proposed to be  conducted,  as  described in the  Disclosure
Document referred to in section 5.4 and to execute,  deliver and perform each of
the  Operative  Documents to which it is (or is to be) a party and to consummate
the transactions  contemplated  thereby.  All of the outstanding  Shares of each
Subsidiary  of  the  Holding  Company  are  validly   issued,   fully  paid  and
nonassessable  and not  subject  to  preemptive  rights on the part of any other
Person, and all of such Shares have been offered,  issued and sold by the issuer
thereof in compliance with all applicable laws. All of the Shares of the Holding
Company's  Subsidiaries  owned by the Holding  Company and its  Subsidiaries  as
shown on Exhibit 5.2 attached hereto are so owned of record and beneficially and
free of any Lien (other than the Liens permitted  pursuant to section  14.9(a)),
proxy, voting agreement,  voting trust or similar agreement or restriction.  The
Operating Company is a Wholly-Owned Subsidiary of the Holding Company.

     5.3.  Qualification.  The Holding  Company and each of its  Subsidiaries is
duly  qualified  or  licensed  to do  business  and is in good  standing in each
jurisdiction  in which the  character of the  properties  owned or leased or the
nature  of the  activities  conducted  makes  such  qualification  or  licensing
necessary,  except  for  those  jurisdictions  in  which  the  failure  to be so
qualified  or licensed or to be in good  standing has not resulted in, and could
not reasonably be expected to result in, a Material Adverse Change.

     5.4. Business, etc. The Holding Company and its Subsidiaries are engaged in
the  business  of  designing,  engineering,  manufacturing  and selling bar code
scanning  equipment  (the  "Business"),  as  further  described  in the  Holding
Company's  Annual  Report on Form 10-K  filed by the  Holding  Company  with the
Commission for the fiscal year ended  December 31, 1995,  including all exhibits
and appendices thereto (the "Disclosure Document"), a true, correct and complete
copy of which has been furnished to you.
<PAGE>

      5.5.  Shares; Stockholders.

          (a) The authorized and  outstanding  Shares of the Holding Company are
     fully and accurately  described on Exhibit 5.5(a) attached  hereto.  All of
     the  outstanding  Shares of the Holding  Company are, and all Shares issued
     upon exercise of any Warrants in accordance with the terms thereof will be,
     validly issued,  fully paid and nonassessable and not subject to preemptive
     rights on the part of any other  Person,  and all of such  Shares have been
     (or will have  been)  offered,  issued and sold by the  Holding  Company in
     compliance  with all applicable  laws. The number of shares of Common Stock
     of the Holding  Company  beneficially  owned by each director and executive
     officer of the Holding Company and its  Subsidiaries  and each other Person
     that, individually or together with its Affiliates, beneficially owns 5% or
     more of such shares of Common Stock (on a fully diluted basis),  along with
     the  percentage  of the total  outstanding  shares  of Common  Stock of the
     Holding Company that such number  represents of Common Stock of the Holding
     Company  (on a fully  diluted  basis),  are set  forth  on  Exhibit  5.5(a)
     attached hereto.  There are no outstanding  Preferred Shares of the Holding
     Company.

          (b) Except as set forth on Exhibit 5.5(b) attached  hereto,  except as
     provided in sections 11 and 12 and except for the  Warrants:  (i) there are
     no  outstanding  rights,  options,  warrants or agreements for the purchase
     from,  or  sale  or  issuance  by,  the  Holding  Company  or  any  of  its
     Subsidiaries of any of its Shares or any other securities  convertible into
     or  exercisable  or  exchangeable  for  such  Shares;  (ii)  there  are  no
     agreements on the part of the Holding Company or any of its Subsidiaries to
     issue,  sell or distribute  any Shares or any  properties and assets of the
     Holding  Company  or any of its  Subsidiaries;  (iii) neither  the  Holding
     Company  nor any of its  Subsidiaries  has any  obligation  (contingent  or
     otherwise)  to purchase,  redeem or otherwise  acquire any of its Shares or
     any  interest  therein or to pay any dividend or make any  distribution  in
     respect  thereof;  and (iv) no Person is entitled to (A) any  preemptive or
     similar  right with  respect to the  issuance  of any Shares of the Holding
     Company or any of its  Subsidiaries  or (B) any rights with  respect to the
     registration   of  any  Shares  of  the  Holding  Company  or  any  of  its
     Subsidiaries under the Securities Act.

          (c) The  aggregate  number of shares of  Common  Stock  issuable  upon
     exercise in full of the Warrants  immediately  after the Closing is 975,000
     which,  if  then  issued,   would  constitute  6.8%  of  the  Common  Stock
     (calculated on a fully-diluted basis assuming the conversion,  exercise and
     exchange of all outstanding  securities convertible into and exercisable or
     exchangeable for shares of Common Stock,  including without  limitation the
     Warrants).  The Holding Company has reserved 975,000 shares of Common Stock
     solely for issuance upon exercise of the Warrants.
<PAGE>

      5.6.  Financial Statements.  You have been furnished with:

          (a) the financial  statements  referred to on Exhibit 5.6(a)  attached
     hereto, which financial statements are complete and correct in all material
     respects (subject,  in the case of any unaudited financial  statements,  to
     the  absence  of  footnote   disclosure  and  normal   year-end  and  audit
     adjustments)  and have been prepared in  accordance  with GAAP applied on a
     consistent  basis throughout the periods covered thereby and present fairly
     in all  material  respects  the  financial  position  and  the  results  of
     operations and cash flows of the Person(s)  purported to be covered thereby
     as at the  respective  dates and for the  respective  periods  indicated in
     conformity  with  GAAP  (subject,  in the case of any  unaudited  financial
     statements,  to the absence of footnote  disclosure and normal year-end and
     audit adjustments);

          (b) the  projections  referred to on Exhibit 5.6(b)  attached  hereto,
     which  projections  were prepared in good faith, are based upon assumptions
     that the  Companies  believe  are  reasonable  and take  into  account  all
     material  information   regarding  the  matters  set  forth  therein.  Such
     projections  represent a reasonable estimate by the Companies of the future
     financial  performance  of the Holding  Company and its  Subsidiaries.  The
     Companies do not  presently  anticipate  any material  deviation  from such
     projections  and the  Companies  reasonably  believe  that the  results  of
     operations reflected therein are attainable; and

          (c) the pro forma unaudited  consolidated balance sheet of the Holding
     Company and its Subsidiaries referred to on Exhibit 5.6(c) attached hereto,
     which balance sheet fairly  presents the financial  position of the Holding
     Company and its  Subsidiaries  as at May 31, 1996,  adjusted on a pro forma
     basis to give effect to the consummation of the  transactions  contemplated
     by the Operative Documents,  and reflects all known material liabilities of
     the Holding  Company and its  Subsidiaries,  contingent or other, as at the
     Closing Date, required by GAAP to be reflected therein.

     5.7. Changes; Solvency, etc. Since December 31, 1995: (a) there has been no
change in the assets,  liabilities or financial condition of the Holding Company
and its  Subsidiaries  from that set forth in the balance  sheet as at such date
referred to on Exhibit 5.6 attached  hereto,  other than changes in the ordinary
course of business which have not been,  either in any case or in the aggregate,
materially  adverse;  (b) no condition or event has occurred  which has resulted
in, or could reasonably be expected to result in, a Material Adverse Change; and
(c) except  as set forth on Exhibit  5.7  attached  hereto,  neither the Holding
Company  nor any of its  Subsidiaries  has,  directly or  indirectly,  declared,
ordered,  paid or made any Restricted  Payment.  Each of the Holding Company and
its Subsidiaries are Solvent.
<PAGE>

     5.8. Tax Returns and  Payments.  The Holding  Company and its  Subsidiaries
have filed all tax returns  required by law to be filed and have paid all taxes,
assessments  and  other  governmental   charges  levied  upon  their  respective
properties,  assets, income, receipts, franchises or sales, other than those not
yet delinquent and those, not substantial in aggregate amount, being or about to
be contested  as provided in section  14.2(a).  The income tax  liability of the
Holding Company and its Subsidiaries has been finally determined by the Internal
Revenue  Service,  and  satisfied,  or the time for audit has  expired,  for the
fiscal years listed on Exhibit 5.8 attached hereto.  The Holding Company and its
Subsidiaries  have not executed any waiver or waivers that would have the effect
of extending  the  applicable  statute of  limitations  in respect of income tax
liabilities.  The charges,  accruals and reserves in the financial statements of
the  Holding  Company  and its  Subsidiaries  in respect of taxes for all fiscal
periods are adequate in the opinion of the Companies,  and the Companies know of
no unpaid assessments for additional taxes for any fiscal period or of any basis
therefor.

     5.9. Funded Debt,  Current Debt,  Liens,  Investments and Transactions with
Affiliates. Exhibit 5.9 attached hereto correctly describes:

          (a) all Funded Debt and/or Current Debt of the Holding  Company and/or
     any of its Subsidiaries to be outstanding immediately following the Closing
     (other than that evidenced by the Notes);

          (b) all Liens to which any of the properties and assets of the Holding
     Company  and/or  any  of  its  Subsidiaries  will  be  subject  immediately
     following  the Closing  (other  than those of the  character  described  in
     section 14.9(b));

          (c) all  Investments  (and  all  agreements  and  commitments  to make
     Investments)  of the Holding  Company and/or any of its  Subsidiaries to be
     owned or held (or in effect) immediately  following the Closing (other than
     Cash Equivalents);

          (d)  all  Affiliates  of  the  Holding   Company  and/or  any  of  its
     Subsidiaries and all  transactions or series of transactions  that involved
     (or will involve) an aggregate  value of $1,000,000 or more with Affiliates
     of  the  Holding  Company  and/or  any  of  its  Subsidiaries   which  were
     consummated  during the 12-month  period ended on the Closing Date or which
     the Holding Company and/or any of its  Subsidiaries is now obligated or now
     intends to consummate at any time in the future; and

          (e) each lease,  other than  Capital  Leases,  under which the Holding
     Company  and/or any of its  Subsidiaries  is lessee or sublessee  and is or
     shall be  obligated  to pay  $25,000  or more  during  any period of twelve
     consecutive  months after the Closing Date,  and, with respect to each such
     lease,  the  name  of the  lessor,  the  lessee  or  sublessee,  a  general
     description of the property leased, the annual Rental  Obligations  payable
     thereunder and the term thereof.
<PAGE>


     5.10.  Title to  Properties;  Liens;  Leases.  The Holding  Company and its
Subsidiaries  have  good  and  marketable  title  to  all  of  their  respective
properties and assets, including,  without limitation, the properties and assets
reflected in the balance sheet, dated December 31, 1995,  referred to on Exhibit
5.6 attached hereto, except properties and assets disposed of since such date in
the  ordinary  course  of  business,  free of all  Liens  (other  than the Liens
permitted under section 14.9).  The Holding Company and its  Subsidiaries  enjoy
peaceful and undisturbed  possession  under all material leases under which they
operate, and all of such leases are valid, subsisting and in full force and
effect. None of such leases contains any unusual or burdensome provision, which,
in either case, has resulted in, or could reasonably be expected to result in, a
Material Adverse Change.

     5.11. Litigation,  etc. Except as set forth on Exhibit 5.11(a), there is no
action,  proceeding  or  investigation  pending or, to the  knowledge  of either
Company,  threatened  (or any  basis  therefor  known to either  Company)  which
questions the validity of any of the Operative  Documents or any action taken or
to be taken  pursuant  thereto or which has resulted in, or could  reasonably be
expected  to result  in, a  Material  Adverse  Change.  There is no  outstanding
judgment, decree or order which has resulted in, or could reasonably be expected
to result in, a Material  Adverse Change.  Exhibit 5.11(b)  attached hereto is a
complete and correct  list of all actions and  proceedings  pending  against the
Holding Company and any of its Subsidiaries.

     5.12.  Valid and Binding  Obligations;  Compliance with Other  Instruments,
Borrowing Restrictions, etc.

          (a) This Agreement has been duly authorized, executed and delivered by
     each Company and constitutes  the valid and legally  binding  obligation of
     each Company enforceable against such Company in accordance with its terms.
     Each of the other Operative Documents to which either Company and/or any of
     their  respective  Subsidiaries is a party has been duly authorized by such
     Person and,  when executed and  delivered,  will  constitute  the valid and
     legally  binding  obligation  of such  Person,  enforceable  against  it in
     accordance with its terms.

          (b) Neither of the Companies nor any of their respective  Subsidiaries
     is in  violation  of or in  default  under  any term of its  Organizational
     Documents, or of any agreement,  document,  instrument,  judgment,  decree,
     order,  law,  statute,  rule or  regulation  applicable to it or any of its
     properties  and  assets,  in any  way  which  has  resulted  in,  or  could
     reasonably  be expected to result in, a Material  Adverse  Change.  Without
     limiting the generality of the foregoing,  the Holding  Company and each of
     its  Subsidiaries  is in  compliance  with (and  neither  it nor any of its
     predecessors in interest has received any notice to the contrary) and there
     is no reasonable possibility of any liability of or any judgment, decree or
     order binding upon or applicable to the Holding  Company  and/or any of its
     Subsidiaries or any of their  respective  properties and assets under or on
     account of any Environmental Laws, except where the same has not
<PAGE>

      resulted in, and could not reasonably be expected to result in, a Material
      Adverse Change.

          (c) The execution, delivery and performance of and the consummation of
     the transactions  contemplated by the Operative  Documents will not violate
     or  constitute a default  under,  or permit any Person to  accelerate or to
     require the prepayment of any Indebtedness of the Holding Company or any of
     its  Subsidiaries  or to terminate  any material  lease or agreement of the
     Holding  Company or any of its  Subsidiaries  pursuant to, or result in the
     creation  of any Lien upon any of the  properties  or assets of the Holding
     Company  or  any  of  its  Subsidiaries   pursuant  to,  any  term  of  its
     Organizational  Documents  or  of  any  agreement,   document,  instrument,
     judgment, decree, order, law, statute, rule or regulation applicable to any
     of them or any of their respective properties and assets.

          (d) Neither the Holding Company nor any of its Subsidiaries is a party
     to or bound by or subject to any agreement, document, instrument, judgment,
     decree,  order, law, statute,  rule or regulation (other than the Operative
     Documents  and the Bank  Credit  Agreement  and  laws,  statutes,  rules or
     regulations   affecting  creditors  or  businesses   generally)  (i)  which
     restricts its right or ability to incur  Indebtedness,  to issue securities
     or to consummate the transactions contemplated hereby; (ii) under the terms
     of or  pursuant  to which its  obligation  to pay all  amounts  due from it
     and/or to perform all  obligations  imposed on it and/or to comply with the
     terms  applicable to it under any of the Operative  Documents is in any way
     restricted;  (iii)  which  restricts  its  right  or  ability  to make  any
     distributions  to its  stockholders or in respect of any of its Shares,  to
     mortgage  or  dispose  of  its   properties,   to  consummate  any  merger,
     consolidation or acquisition,  to make Investments or Capital Expenditures,
     to enter into and perform leases, to pay executive  compensation  and/or to
     conduct its business as now conducted and now proposed to be conducted,  or
     (iv) which has resulted in, or could reasonably be expected to result in, a
     Material Adverse Change.

      5.13. ERISA.

          (a)  Each  Company  and  each  ERISA   Affiliate   have  operated  and
     administered  each Plan in compliance  with all applicable  laws except for
     such instances of  noncompliance  which have not resulted in, and could not
     reasonably  be expected to result in, a Material  Adverse  Change.  Neither
     Company nor any ERISA  Affiliate  has  incurred any  liability  pursuant to
     Title I or IV of ERISA or the penalty or excise tax  provisions of the Code
     relating to employee benefit plans (as defined in section 3 of ERISA),  and
     no event,  transaction  or  condition  has  occurred  or exists  that could
     reasonably be expected to result in the incurrence of any such liability by
     either Company or any ERISA Affiliate,  or in the imposition of any Lien on

<PAGE>

     any of the  rights,  properties  or assets of either  Company  or any ERISA
     Affiliate,  in either  case  pursuant  to Title I or IV of ERISA or to such
     penalty or excise tax  provisions  or to section  401(a)(29)  or 412 of the
     Code,  other than such liabilities or Liens as would not individually or in
     the aggregate result in a Material Adverse Change.

          (b) The present value of the aggregate benefit  liabilities under each
     of the Plans (other than Multiemployer Plans),  determined as of the end of
     such Plan's  most  recently  ended plan year on the basis of the  actuarial
     assumptions  specified  for  funding  purposes  in such  Plan's most recent
     actuarial  valuation report,  did not exceed the aggregate current value of
     the assets of such Plan  allocable  to such benefit  liabilities.  The term
     "benefit  liabilities"  has the meaning  specified in section 4001 of ERISA
     and the  terms  "current  value"  and  "present  value"  have  the  meaning
     specified in section 3 of ERISA.

          (c)  The  Companies  and  the  ERISA   Affiliates  have  not  incurred
     withdrawal  liabilities  (and  are not  subject  to  contingent  withdrawal
     liabilities)   under   section   4201  or  4204  of  ERISA  in  respect  of
     Multiemployer Plans that individually or in the aggregate could result in a
     Material  Adverse Change.  The Companies and the ERISA Affiliates have made
     all required  contributions to Multiemployer Plans. Neither Company nor any
     ERISA Affiliate has incurred,  nor would  reasonably  expect to incur,  any
     Withdrawal  Liability  upon a  complete  or  partial  withdrawal  from  any
     Multiemployer  Plan that individually or in the aggregate could result in a
     Material  Adverse  Change.  To the  best of the  Companies'  knowledge,  no
     Multiemployer  Plan is, or is  reasonably  expected  to be,  insolvent,  in
     reorganization or terminated within the meaning of Title IV of ERISA.

          (d) Neither the Holding  Company nor any of its  Subsidiaries  has any
     material post retirement benefit obligations (determined in accordance with
     Financial  Accounting  Standards Board Statement No. 106, without regard to
     liabilities attributable to continuation coverage mandated by section 4980B
     of the Code).

          (e) The consummation of the transactions contemplated by the Operative
     Documents  will  not  involve  any  transaction  that  is  subject  to  the
     prohibitions  of section 406(a) of ERISA or in connection  with which a tax
     could be imposed  pursuant to section  4975(c)(1)(A)-(D)  of the Code.  The
     representation  by the  Companies  in the first  sentence  of this  section
     5.13(e)  is made in  reliance  upon and  subject  to the  accuracy  of your
     representation in section 26 as to the sources of the funds used to pay the
     purchase price of the Securities to be purchased by you.

     5.14.  Consents,  etc.  No  consent,   approval  or  authorization  of,  or
declaration or filing with, or other action by, any Person  (including,  without
limitation,  any  creditor  of or lender to the  Holding  Company  or any of its
Subsidiaries and any governmental (13)
<PAGE>

authority) is required as a condition precedent to the valid execution, delivery
and performance of and the consummation of the transactions  contemplated by the
Operative Documents. 

     5.15.  Proprietary  Rights;  Licenses.  Except as disclosed on Exhibit 5.15
attached hereto,  the Holding Company and its Subsidiaries  have all Proprietary
Rights  and  Licenses  as are  adequate  for the  conduct  of  their  respective
businesses as now conducted and now proposed to be conducted,  without any known
conflict with the rights of others.  Each such Proprietary  Right and License is
in full force and effect,  all material  obligations  with respect  thereto have
been fulfilled and performed and, to the knowledge of the Companies, there is no
infringement  thereon by any other  Person.  No default  in the  performance  or
observance by the Holding  Company  and/or any of its  Subsidiaries  (or, to the
knowledge of the Companies, any of their respective predecessors in interest) of
its obligations  thereunder has occurred which permits, or after notice of lapse
of time or both would  permit,  the  revocation or  termination  of any material
Proprietary  Right or License or which has resulted in, or could  reasonably  be
expected to result in, a Material Adverse Change.

     5.16. Offer of Securities;  Investment Bankers.  Neither Company nor any of
their  respective  Subsidiaries  nor any Person  acting on their behalf  (a) has
directly or indirectly offered the Securities or any part thereof or any similar
securities  for issue or sale to, or solicited  any offer to buy any of the same
from,  anyone other than you and the Other Purchasers and not more than 65 other
institutional investors, (b) has taken or will take any action which would bring
the issuance and sale of the  Securities  within the  provisions of Section 5 of
the  Securities  Act or the  registration  or  qualification  provisions  of any
applicable  blue sky or other  securities  laws,  (c) has dealt with any broker,
finder,  commission agent or other similar Person in connection with the sale of
the  Securities  and  the  other  transactions  contemplated  by  the  Operative
Documents, other than Fleet National Bank, or (d) is under any obligation to pay
any  broker's  fee,   finder's  fee  or  commission  in  connection   with  such
transactions,  other  than  a fee  to  Fleet  National  Bank,  which  fee is the
obligation solely of the Holding Company.

     5.17.  Government  Regulation.  Neither the Holding  Company nor any of its
Subsidiaries  is subject to regulation  under the Public Utility Holding Company
Act of 1935,  the Federal Power Act, the  Investment  Company Act of 1940 or the
Interstate Commerce Act, each as amended.

     5.18. Labor Relations;  Suppliers,  Distributors and Customers.  No dispute
involving  employees of the Holding  Company or any of its  Subsidiaries  or the
relationship  of  the  Holding  Company  or any of  its  Subsidiaries  with  its
employees  has  resulted in, or could  reasonably  be expected to result in, any
Material  Adverse  Change.   The   relationships   with  the  suppliers  to  and
distributors  for and customers of the Holding Company and its  Subsidiaries are
satisfactory  commercial  working  relationships and, during the 12-month period
ended on the  Closing  Date,  no such  supplier,  distributor  or  customer  has

<PAGE>

cancelled  or  otherwise  terminated  its  relationship  with or  decreased  its
services,  supplies or  materials to or its usage or purchase of the services or
products of the Holding Company or any of its Subsidiaries in a manner which has
resulted in, or could  reasonably  be expected to result in, a Material  Adverse
Change.  The Holding Company is not aware of any intention of any such supplier,
distributor  or  customer  to take any such action  which  could  reasonably  be
expected to result in a Material Adverse Change.

     5.19.  Voting  Provisions.  Except as set forth on  Exhibit  5.19  attached
hereto,  neither the  Organizational  Documents  of the Holding  Company nor any
other agreement,  document or instrument binding on or applicable to the Holding
Company or its  stockholders  contains any  provision  requiring a higher voting
requirement   with  respect  to  action  taken  (and/or  to  be  taken)  by  the
stockholders  or directors of the Holding Company than that which would apply in
the absence of such provision.

     5.20.  Disclosure.  Neither this  Agreement nor any of the other  Operative
Documents nor any other document,  certificate or written statement furnished to
you by or on behalf of either Company or any of their respective Subsidiaries in
connection  with  the  transactions  contemplated  by  the  Operative  Documents
(including,  without limitation,  the Disclosure Document),  contains any untrue
statement  of a material  fact or omits to state a material  fact  necessary  in
order to make the statements  contained herein and therein not misleading in the
light of the  circumstances  under  which such  statements  were made,  it being
understood  that,  except as set forth in  section  5.6,  no  representation  or
warranty is made with respect to any projections or other prospective  financial
information.  There is no fact known to either Company  (other than  information
concerning general economic  conditions known to the public generally) which has
resulted in, or could  reasonably  be expected to result in, a Material  Adverse
Change  which has not been set  forth in this  Agreement,  the  other  Operative
Documents and the other documents,  certificates and written statements referred
to above in this section 5.20.

6.    Use of Proceeds.

          (a)  The  proceeds  of the  sale  of the  Securities  received  by the
     Companies  at the  Closing  will be used on the  Closing  Date to make  the
     payments  to the  Persons  and for the  purposes  specified  on  Exhibit  6
     attached hereto and any remaining balance of such proceeds will be used for
     general corporate purposes of the Operating Company and its Subsidiaries.

          (b) The Companies do not own, and will not, and will not permit any of
     their respective  Subsidiaries to, directly or indirectly,  use any part of
     the proceeds of the sale of the Securities for the purpose of purchasing or
     carrying any "margin stock" within the meaning of Regulation G (12 CFR Part
     207) of the Board of Governors of the Federal Reserve System (herein called
     a "margin  security")  or for the  purpose  of  reducing  or  retiring  any
     Indebtedness which was originally  incurred to purchase or carry any margin

<PAGE>

     security or for any other purpose which might  constitute the  transactions
     contemplated  by the  Operative  Documents  a "purpose  credit"  within the
     meaning of said  Regulation  G or cause this  Agreement or any of the other
     Operative  Documents to violate Regulation G or any other regulation of the
     Board of Governors of the Federal  Reserve  System,  or the Exchange Act or
     any other applicable law, statute, regulation, rule, order or restriction.

     7. Financial Statements and Information.  The Companies will furnish to you
in duplicate, so long as you shall be obligated to purchase Securities hereunder
or shall  hold any of the Notes or  Warrants,  and to each  other  institutional
holder from time to time of any of the Notes or Warrants:

          (a) as soon as available and in any event within 45 days after the end
     of each  quarterly  accounting  period in each  fiscal  year of the Holding
     Company  (other  than the last  quarterly  accounting  period  of each such
     fiscal year), the consolidated  and, if otherwise  prepared,  consolidating
     balance sheets of the Holding Company and its Subsidiaries as at the end of
     such  period and the  related  consolidated  and,  if  otherwise  prepared,
     consolidating  statements of income,  retained  earnings and cash flows for
     such  period and for the  portion of such fiscal year ended on the last day
     of such  period,  in each  case  setting  forth  in  comparative  form  the
     corresponding  figures for the same period and portion of the prior  fiscal
     year and the corresponding figures from the budgets for such period and for
     the fiscal year which includes such period;

          (b) as soon as available and in any event within 90 days after the end
     of  each  fiscal  year  of  the  Holding  Company,   the  consolidated  and
     consolidating balance sheets of the Holding Company and its Subsidiaries as
     at the end of such  year and the  related  consolidated  and  consolidating
     statements  of income and  retained  earnings  and a  consolidated  and, if
     otherwise prepared, consolidating statement of cash flows for such year, in
     each case setting forth in comparative form the  corresponding  figures for
     the prior  fiscal year and the  corresponding  figures  from the budget for
     such fiscal year,  all in reasonable  detail and  accompanied by an opinion
     acceptable to the Required Holders of the Notes and of the Warrants on such
     consolidated   financial   statements  of  the  Holding  Company)  and  its
     Subsidiaries  of Arthur  Andersen LLP (or other  accountants  of recognized
     national  standing  selected by the Holding Company) which report shall (i)
     state  that  the  audit  of  such   accountants  in  connection  with  such
     consolidated  financial  statements has been  conducted in accordance  with
     generally  accepted  auditing  standards and that such accountants  believe
     that such audit provides a reasonable basis for their opinion, (ii) contain
     the other statements  required from time to time by the American  Institute
     of  Certified  Public  Accountants,  (iii)  include  the  opinion  of  such
     accountants that such consolidated  financial  statements present fairly in
     all material  respects the consolidated  financial  position of the Holding
     Company  and its  Subsidiaries  as at the end of such  fiscal  year and the

<PAGE>

     consolidated  results of operations and cash flows for such fiscal year, in
     conformity  with GAAP, and (iv) be  accompanied  by a separate  letter from
     such  accountants  which shall state (A) that such accountants are familiar
     with the terms of this Agreement,  the Other Securities Purchase Agreements
     and the Securities and provide  negative  assurance  relative to compliance
     with the  applicable  covenants  of this  Agreement,  the Other  Securities
     Purchase Agreements and the Securities as they relate to accounting matters
     and  (B) whether  or not their  examination  has disclosed  the  existence,
     during  or at  the  end  of the  fiscal  year  covered  by  such  financial
     statements  and/or  the date of such  letter,  of any  Default  or Event of
     Default and, if their  examination has disclosed such a condition or event,
     specifying in reasonable detail the nature and period of existence thereof,
     provided that in issuing such  certificate  such  accountants  shall not be
     required to go beyond normal accounting  procedures conducted in connection
     with issuing their report referred to above;

          (c) together  with each delivery of financial  statements  pursuant to
     sections 7(a) and 7(b), an Officers' Certificate which shall:

               (i) certify that such financial  statements have been prepared in
          accordance with GAAP (subject,  in the case of any unaudited financial
          statements,  to normal year-end and audit adjustments and the omission
          of footnotes)  applied on a consistent  basis  throughout  the periods
          covered  thereby  and  present  fairly in all  material  respects  the
          consolidated  financial  position  and  the  consolidated  results  of
          operations and cash flows of the Holding Company and its  Subsidiaries
          as at the end of and for the  periods  covered  thereby in  conformity
          with GAAP;

               (ii)  state  that,  after due  inquiry,  the  signers do not have
          knowledge of the  existence,  during the fiscal period covered by such
          financial statements or as at the date of such Officers'  Certificate,
          of (A) any "reportable condition" (as defined in Statement on Auditing
          Standards  No.  60  issued  by the  Auditing  Standards  Board  of the
          American  Institute of Certified  Public  Accountants) in the internal
          control structure of the Holding Company or any of its Subsidiaries or
          (B) any  Default  or Event of  Default,  or,  if such is not the case,
          specifying  in  reasonable  detail the nature and period of  existence
          thereof  and  what  action  the  Holding  Company  or  the  applicable
          Subsidiary  has taken,  is taking and  proposes  to take with  respect
          thereto;

               (iii) (A) show in reasonable detail all computations  required to
          demonstrate  compliance,  during and at the end of the  fiscal  period
          covered by such financial statements,  with the provisions of sections
          14.5,  14.6,  14.7,   14.9,  14.11  and  14.15   (including,   without
          limitation,  the computation of  Consolidated  EBITDA for such period)
          and  (B) in the case of the  Officer's  Certificate  accompanying  the

<PAGE>

          financial  statements  required  under  section  7(b),  set  forth  in
          reasonable detail the fair market values of any significant properties
          and  assets  disposed  of  during  the  fiscal  year  covered  by such
          financial statements;

               (iv) include in reasonable  detail  management's  discussion  and
          analysis of the results of operations  and the financial  condition of
          Holding  Company  and  its  Subsidiaries  as at the end of and for the
          fiscal  period  covered  by such  financial  statements,  including  a
          discussion  of any  significant  variation  from the  budgets for such
          period delivered pursuant to section 7(h); and

               (v) if there shall exist any Subsidiary of the Holding Company as
          of the date of such  Officers'  Certificate  which did not exist as of
          the date of the last Officers'  Certificate delivered pursuant to this
          section  7(c),  specify  with  respect  to each  such  Subsidiary  the
          information called for by Exhibit 7(c)(v), contain a brief description
          of the nature of each such Subsidiary's business and certify that each
          such new Subsidiary is a party to a Note Guarantee;

          (d) as promptly as  practicable  (but in any event not later than five
     Business  Days)  after  receipt  thereof,  copies of all final  reports  or
     written comments (including,  without limitation, audit reports, management
     letters  and  any  other  reports  with  respect  to the  internal  control
     structure of the Holding Company or any of its  Subsidiaries)  submitted by
     independent accountants;

          (e) as promptly as  practicable  (but in any event not later than five
     Business  Days) after the same are  available,  copies of (i) all  notices,
     proxy  statements,  financial  statements,  reports  and  documents  as the
     Holding Company shall send or make available  generally to its stockholders
     or as any  Subsidiary of the Holding  Company shall send or make  available
     generally to its  stockholders  other than the Holding Company and (ii) all
     periodic and special reports,  documents and registration statements (other
     than on Form S-8)  which  the  Holding  Company  or any  Subsidiary  of the
     Holding  Company  furnishes  or  files,  or  any  officer  or  director  or
     stockholder of the Holding Company or any of its Subsidiaries  furnishes or
     files with respect to the Holding Company or any of its  Subsidiaries  with
     the Commission  (or any analogous  foreign  governmental  authority) or any
     securities exchange if furnished or available to the Holding Company or any
     of its Subsidiaries;

          (f) as promptly as  practicable  (but in any event not later than five
     Business Days) after the Chief Executive Officer or Chief Financial Officer
     of the  Holding  Company  becomes  aware  of the  occurrence  of any of the
     following  conditions  or events,  an Officers'  Certificate  specifying in
     reasonable detail the nature and period of existence  thereof,  what action
     the Holding  Company or any of its  Subsidiaries  has taken,  is taking and
     proposes to take with respect thereto:

<PAGE>

     (i) with respect to any Plan, any reportable  event,  as defined in section
     4043(b) of ERISA and the regulations  thereunder,  for which notice thereof
     has not been waived  pursuant to such  regulations as in effect on the date
     hereof;  (ii)  the  taking  by the  PBGC  of  steps  to  institute,  or the
     threatening by the PBGC of the  institution of,  proceedings  under section
     4042 of ERISA for the  termination  of, or the  appointment of a trustee to
     administer,  any  Plan,  or the  receipt  by  either  Company  or any ERISA
     Affiliate of a notice from a  Multiemployer  Plan that such action has been
     taken by the PBGC with  respect to such  Multiemployer  Plan;  or (iii) any
     event,  transaction or condition that could result in the incurrence of any
     liability by either Company or any ERISA  Affiliate  pursuant to Title I or
     IV of ERISA or the penalty or excise tax provisions of the Code relating to
     employee  benefit  plans,  or in the  imposition  of any Lien on any of the
     rights,  properties  or  assets of either  Company  or any ERISA  Affiliate
     pursuant  to  Title  I or IV  of  ERISA  or  such  penalty  or  excise  tax
     provisions,  if such liability or Lien,  taken together with any other such
     liabilities or Liens then existing, has resulted in, or could reasonably be
     expected to result in, a Material Adverse Change;

          (g) as  promptly as  practicable  (but in any event not later than two
     Business Days) after the occurrence of any Default or Event of Default,  or
     of any  condition or event which has resulted  in, or could  reasonably  be
     expected to result in, a Material Adverse Change, an Officers'  Certificate
     specifying in reasonable detail the nature and period of existence thereof,
     what action the Holding  Company or any of its  Subsidiaries  has taken, is
     taking and proposes to take with respect  thereto and the date,  if any, on
     which it is estimated the same will be remedied;

          (h) as  promptly  as  practicable  (but in any event not later than 30
     days) after the end of each fiscal year of the Holding  Company,  an annual
     budget  prepared  on a  quarterly  basis for the  Holding  Company  and its
     Subsidiaries for the succeeding fiscal year (displaying anticipated balance
     sheets and  statements  of income,  retained  earnings and cash flows) and,
     promptly upon preparation thereof, any revisions of such annual budget;

          (i) such  other  material  information  and  notices  relating  to the
     Holding Company and/or any of its  Subsidiaries as shall be furnished to or
     received  from the  Sellers  or any bank,  financial  institution  or other
     Person to which the Holding Company or any of its  Subsidiaries is indebted
     for borrowed money (other than that relating  solely to collateral for such
     Indebtedness),  including,  without  limitation,  any  notice of default or
     event of default  under the Seller Notes and/or the Bank Credit  Agreement,
     such  information  and  notices  to be  furnished  to  the  holders  of the
     Securities at the same time as it is furnished to, or immediately  after it
     is received from, any such bank, financial institution or other Person; and
<PAGE>

          (j) such  other  information  as from time to time may  reasonably  be
     requested.

8.  Inspection.  The Holding  Company will permit any Person  designated  by any
institutional holder of any of the Notes or Warrants on reasonable notice and at
such holder's  expense (unless a Default or Event of Default shall have occurred
and be  continuing,  in which case,  at the  Companies'  expense),  to visit and
inspect any of the properties of the Holding  Company and its  Subsidiaries,  to
examine  its and their books and  records  (and to make copies  thereof and take
extracts therefrom) and to discuss its and their affairs,  finances and accounts
with and to be  advised as to the same by, its and their  officers  and  outside
counsel  (and if a  Default  or Event of  Default  shall  have  occurred  and be
continuing,  its and their independent  accountants,  each of whom the Companies
hereby  direct  and  authorize  to  engage  in  such   discussions   under  such
circumstances),  all at such  reasonable  times and intervals as such holder may
desire. 

9. Prepayment of Notes.

     9.1.  Required Annual  Prepayment  Without Premium of Notes. In addition to
paying the entire  outstanding  principal  amount of and the interest due on the
Notes on the maturity date thereof,  on each June 30,  commencing June 30, 2003,
until  the Notes  have been paid in full,  the  Operating  Company  will  prepay
without  premium  $7,500,000  principal  amount  of the  Notes  (or such  lesser
principal amount thereof as shall then be outstanding). No partial prepayment of
the Notes  shall  alter the  obligation  of the  Operating  Company  to make the
required prepayments provided for in this section 9.1.

     9.2.  Optional  Prepayment With Premium of Notes. At any time and from time
to time, the Operating  Company may, at its option,  upon notice as set forth in
section 9.5,  prepay all or any part (in an integral  multiple of $500,000 and a
minimum of $1,000,000 or such lesser  principal  amount thereof as shall then be
outstanding) of the Notes upon the concurrent  payment of an amount equal to the
Make Whole Amount.  Any partial prepayment of Notes pursuant to this section 9.2
shall be applied to the payment of  installments  of  principal  of the Notes in
inverse order of maturity.

     9.3.  Optional  Prepayment  With  Premium of the Notes with the Proceeds of
Certain Public Offerings.  Concurrent with (or immediately  following) a closing
of a sale by the  Holding  Company to the public of its  Shares  pursuant  to an
effective   registration  statement  filed  by  the  Holding  Company  with  the
Commission  under the  Securities  Act  resulting in net proceeds to the Holding
Company from such sale of not less than $25,000,000,  the Operating Company may,
at its option,  upon notice as set forth in section 9.5,  prepay all (subject to
the limitation set forth in the second proviso to this sentence) or any part (in
an  integral  multiple of $500,000  and a minimum of  $1,000,000  or such lesser
principal  amount  thereof as shall then be  outstanding)  of the Notes upon the
concurrent  payment  of an  amount  equal  to the  Special  Prepayment  Premium,

<PAGE>

provided that such prepayment  shall be made only with available net proceeds of
such sale of Shares to the public, and provided, further, that in no event shall
the aggregate  principal  amount of Notes prepaid by the Operating  Company from
time to time  pursuant  to this  section  9.3 exceed  $10,000,000.  Each  notice
pursuant  to  section  9.5 of a  prepayment  under  this  section 9.3  shall  be
accompanied by an Officers'  Certificate  certifying and demonstrating that this
section 9.3  is being  complied  with in  connection  with such  prepayment  and
specifying  the source or sources of funds to be used for such  prepayment.  Any
partial prepayment of Notes pursuant to this section 9.3 shall be applied to the
payment of installments of principal of the Notes in inverse order of maturity.

     9.4.  Allocation  of  Partial  Prepayments  of  Notes.  In the case of each
partial prepayment of the Notes under this section 9, the principal amount to be
prepaid  shall be  allocated  among  all of the  Notes  at the time  outstanding
(excluding  any Notes at the time owned by either  Company or any  Affiliate  of
either  Company) in  proportion,  as nearly as  practicable,  to the  respective
unpaid principal amounts thereof,  with adjustments,  to the extent practicable,
to compensate for any prior prepayments not made exactly in such proportion.

     9.5.  Notice  of  Optional  Prepayments  of  Notes.  In the  case  of  each
prepayment under sections 9.2 and 9.3, the Operating  Company shall give written
notice  thereof  to each  holder  of any Notes not less than 30 nor more than 60
days prior to the date fixed for such  prepayment.  Each such  notice  shall set
forth:  (a) the date fixed for  prepayment  (which,  in the case of a prepayment
under  section  9.3 may be a good faith  approximation  of such  date);  (b) the
aggregate  principal  amount of Notes to be prepaid on such  date;  and  (c) the
aggregate  principal  amount of Notes held by such  holder to be prepaid on such
date and the amount of accrued  interest  and an  estimation  of the  Applicable
Premium to be paid to such holder on such date (together with the calculation of
such estimated  Applicable  Premium,  which calculation shall be satisfactory to
each holder of the Notes to be prepaid).

     9.6. Maturity;  Accrued Interest;  Surrender, etc. of Notes. In the case of
each  prepayment  of all or any part of any  Note,  the  principal  amount to be
prepaid  shall  mature  and  become  due and  payable on the date fixed for such
prepayment, together with interest on such principal amount accrued to such date
and the  premium,  if any,  due  thereon.  Any  Note  prepaid  in full  shall be
surrendered to the Operating Company at the Operating  Company's principal place
of  business  promptly  following  prepayment  and  cancelled  and  shall not be
reissued, and no Note shall be issued in lieu of any prepaid principal amount of
any Note.

     9.7.  Purchase of Notes.  The  Companies  will not, and will not permit any
Affiliate of either Company to,  directly or  indirectly,  purchase or otherwise
acquire, or offer to purchase or otherwise acquire, any outstanding Notes except
by way of payment or prepayment in accordance  with the  provisions of the Notes
and this Agreement.

<PAGE>

     9.8.  Payment on  Non-Business  Days. If any amount  hereunder or under the
Notes shall become due on a day which is not a Business  Day, such payment shall
be due on the next succeeding Business Day.

     9.9. Application of Notes in Satisfaction of Exercise Price of Warrants. In
the event  that any  holder of any Note  shall  apply all or any  portion of the
principal  amount  of such  Note in  satisfaction  (in  whole or in part) of the
payment  of the  Exercise  Price  (as  defined  in the  Warrants),  any  partial
application  of the  principal  amount of any such Note  shall be applied to the
payment of  installments  of principal  due  thereunder  in the inverse order of
maturity.

10.   Subordination of Notes.

     10.1. Certain Definitions.  As used in this section 10, the following terms
have the following respective meanings:

          "Accrued  Bankruptcy   Interest"  shall  mean,  with  respect  to  any
     Indebtedness,  all interest accruing thereon after the filing of a petition
     by or against either Company under the Bankruptcy  Code, in accordance with
     and at the rate (including any rate applicable upon any default or event of
     default,  to the extent  lawful)  specified in the documents  evidencing or
     governing such Indebtedness,  whether or not the claim for such interest is
     allowed as a claim after such filing in any proceeding under the Bankruptcy
     Code.

          "Bankruptcy  Code" shall mean 11 U.S.C.  101 et seq.,  as from time to
     time hereafter amended, and any successor or similar federal statute.

          "Material  Default" shall mean (a) any default in the payment when due
     of fees or expenses that constitute  Superior  Indebtedness  and/or (b) any
     default  under section  6.01(f) of the Bank Credit  Agreement and any other
     Event of Default  (other than an Event of Default  under  section  6.01(a))
     under the Bank  Credit  Agreement,  or a default  or Event of  Default,  as
     applicable, under the analogous provisions of any Refinancing Agreement.

            "Obligors"  shall mean each of the Companies and each Person who has
      executed and delivered a Note Guarantee.
 
          "Permissible Securities" shall mean securities the payment of which is
     subordinated,  at least to the  extent  provided  in this  section  10 with
     respect to the  Subordinated  Indebtedness,  to the payment of all Superior
     Indebtedness at the time outstanding and all securities  issued in exchange
     therefor.

          "Refinancing Agreement" shall mean the loan agreements,  documents and
     instruments,  if any, entered into by the Companies in compliance with this
     Agreement,  pursuant to which  Indebtedness  is  incurred by the  Companies
     which
<PAGE>

     refinances or refunds all or any portion of the Indebtedness under the Bank
     Credit  Documents,  provided  that  all of such  refinancing  or  refunding
     Indebtedness is permitted under section 14.5(a)(iv) and provided,  further,
     that the terms of such loan agreements, documents and instruments, taken as
     a whole,  are no more  restrictive upon the Obligors and no more adverse to
     the  interests  of the  holders  of the  Securities  than those of the Bank
     Credit Documents.

          "Subordinated  Indebtedness"  shall mean the  principal  amount of the
     Indebtedness  evidenced by the Notes, together with any interest,  premium,
     if any,  fee,  expense  and/or  other  amount due  thereon or payable  with
     respect thereto, including any such amounts payable by any guarantor of the
     Notes.

          "Superior  Indebtedness" shall mean the principal amount of all Funded
     Debt and Current Debt  (including  the face amount of letters of credit) of
     the  Operating  Company  under the Bank  Credit  Agreement,  the other Bank
     Credit  Documents or under any  Refinancing  Agreement,  together  with any
     interest  (including Accrued Bankruptcy  Interest),  premium,  if any, fee,
     expense,  other  reimbursement  obligations in respect of letters of credit
     and/or other amount due thereon or payable with respect thereto,  including
     any such amounts  payable by any  guarantor  of any Superior  Indebtedness,
     provided that the aggregate principal amount (and face amount of letters of
     credit) of all Superior  Indebtedness  (a) under  the term loan  facilities
     established  by the Bank Credit  Agreement (or any  Refinancing  Agreement)
     shall  at no  time  exceed  (i)  $84,000,000  minus  (ii)  the  sum  of all
     repayments  of  the  principal  of  such  Indebtedness  and  (b) under  the
     revolving credit facility  established by the Bank Credit Agreement (or any
     Refinancing  Agreement)  shall  at no  time  exceed  (i) $21,000,000  minus
     (ii) the sum of all repayments of the principal of such Indebtedness (other
     than any repayment  that may be thereafter  reborrowed  under the revolving
     credit facility) and minus (iii) the sum of all permanent reductions in the
     amount of the borrowing availability under such revolving credit facility.

      10.2. Subordinated Indebtedness Subordinated to Superior Indebtedness; No
Amendments.

          (a) Each Obligor for itself and its successors  and assigns  covenants
     and  agrees,  and each  holder  of any  Subordinated  Indebtedness,  by its
     acceptance  thereof,  shall  be  deemed  to  have  agreed,  notwithstanding
     anything to the contrary in this Agreement,  the Other Securities  Purchase
     Agreements,  the Notes, or any of the other Operative  Documents,  that the
     payment  of the  Subordinated  Indebtedness  shall be  subordinated  to the
     extent and in the manner set forth in this section 10, to the prior payment
     in full (in cash,  Cash  Equivalents of the kind described in clause (a) of
     the definition of such term,  other forms  reasonably  satisfactory  to the
     holder or  holders  of at least 75% in  aggregate  principal  amount of the
     Superior Indebtedness, or a combination of the foregoing) of all Superior 

<PAGE>

     Indebtedness,  and that each holder of Superior  Indebtedness,  whether now
     outstanding or hereafter created, incurred, assumed or guaranteed, shall be
     deemed  to  have  acquired  Superior  Indebtedness  in  reliance  upon  the
     provisions  contained  in this  section 10. No present or future  holder of
     Superior  Indebtedness  shall be  prejudiced  in the right to  enforce  the
     subordination of the Subordinated  Indebtedness  effected  pursuant to this
     section 10 by any act or failure to act on the part of any Obligor.

          (b) Neither this  section 10 nor any of the terms of the  Subordinated
     Indebtedness   relating  to  the  timing  or  amount  of  any  payment  (or
     prepayment)  of the  principal  of or  premium,  if any, or interest on the
     Subordinated  Indebtedness,  or any  other  amount  (including  any  fee or
     expense) due thereon,  shall be amended  without the written consent of the
     holder or holders of at least 66-2/3% in aggregate  principal amount of the
     Superior Indebtedness at the time outstanding.

          (c) Unless and until the Superior  Indebtedness  has been paid in full
     (in cash,  Cash  Equivalents  of the kind  described  in clause  (a) of the
     definition of such term, other forms reasonably  satisfactory to the holder
     or holders of at least 75% in  aggregate  principal  amount of the Superior
     Indebtedness,  or a combination of the  foregoing),  the Obligors shall not
     grant to the holders of the Subordinated Indebtedness any Lien in or on any
     of the  assets of the  Obligors  to secure the  Subordinated  Indebtedness,
     without  the  written  consent  of the holder or holders of at least 75% in
     aggregate  principal  amount  of the  Superior  Indebtedness  at  the  time
     outstanding.

     10.3. Dissolution,  Liquidation,  Reorganization,  etc. Upon any payment or
distribution  of the assets of either Company of any kind or character,  whether
in cash, property or securities, to creditors upon any dissolution,  winding-up,
total  or  partial  liquidation,   reorganization,   composition,   arrangement,
adjustment or readjustment of such Company or its securities,  whether voluntary
or involuntary,  or in bankruptcy,  insolvency,  reorganization,  liquidation or
receivership  proceedings,  or upon a  general  assignment  for the  benefit  of
creditors,  or any other  marshalling  of the  assets  and  liabilities  of such
Company,  or otherwise  (hereinafter a "Liquidation  Payment"),  then and in any
such event: 

          (a) the  holders of the  Superior  Indebtedness  shall be  entitled to
     receive payment in full (in cash, Cash Equivalents of the kind described in
     clause  (a)  of  the  definition  of  such  term,  other  forms  reasonably
     satisfactory  to the  holder  or  holders  of at  least  75%  in  aggregate
     principal  amount of the Superior  Indebtedness,  or a  combination  of the
     foregoing)  (or  to  have  such  payment  duly  provided  for  in a  manner
     reasonably  satisfactory  to the holders of Superior  Indebtedness)  of all
     Superior  Indebtedness,  before any Liquidation  Payment,  whether in cash,
     property or  securities  (other than  Permissible  Securities),  is made on
     account of or applied to the Subordinated Indebtedness; 
<PAGE>

          (b) the  Subordinated  Indebtedness  shall  forthwith  become  due and
     payable,  and  any  Liquidation  Payment,  whether  in  cash,  property  or
     securities (other than Permissible Securities), to which the holders of the
     Subordinated  Indebtedness  would be entitled  except for the provisions of
     this  section 10,  shall be paid or  delivered  by any  debtor,  custodian,
     liquidating trustee, agent or other Person making such Liquidation Payment,
     directly  to  the   holders  of  the   Superior   Indebtedness,   or  their
     representative  or  representatives,  ratably  according  to the  aggregate
     amounts  remaining  unpaid on account of such  Superior  Indebtedness,  for
     application to the payment thereof, to the extent necessary to pay all such
     Superior Indebtedness in full after giving effect to any concurrent payment
     or  distribution,  or provision  therefor,  to the holders of such Superior
     Indebtedness; and

          (c)  each  holder  of  the  Subordinated   Indebtedness  at  the  time
     outstanding hereby  irrevocably  authorizes and empowers each holder of the
     Superior  Indebtedness  or such  holder's  representative  to  collect  and
     receive  such  holder's  ratable  share of any  Liquidation  Payment and to
     receipt therefor, and, if any holder of Subordinated  Indebtedness fails to
     file a claim  therefor at least seven (7)  calendar  days prior to the date
     established  by rule of law or order of court for such filing,  to file and
     prove (but not to vote) such claims therefor,  provided that such holder of
     Superior  Indebtedness  shall  concurrently  send written notice thereof to
     each holder of Subordinated Indebtedness, together with a copy of the proof
     of claim so filed.

     Upon any payment or  distribution of assets referred to in this section 10,
the holders of the Subordinated  Indebtedness shall be entitled to rely upon any
order or  decree  made by any  court of  competent  jurisdiction  in which  such
bankruptcy,  insolvency,  reorganization,  liquidation,  receivership  or  other
proceeding is pending,  or a certificate of the debtor,  custodian,  liquidating
trustee,  agent or other Person making any such payment or  distribution to such
holders,  for the purpose of  ascertaining  the Persons  entitled to participate
therein,  the  holders  of  the  Superior  Indebtedness,  the  then  outstanding
principal  amount of the Superior  Indebtedness  and any and all amounts payable
thereon,  the amount or amounts paid or distributed  thereon and all other facts
pertinent thereto or to this section 10.

     10.4.  No Payments  With Respect to  Subordinated  Indebtedness  in Certain
Circumstances.  

          (a) The Obligors will not,  directly or  indirectly,  make or agree to
     make,  and neither the holder nor any assignee or  successor  holder of any
     Subordinated   Indebtedness   will   accept  or  receive   any  payment  or
     distribution  (in cash,  property or  securities  (other  than  Permissible
     Securities) by set-off or otherwise),  direct or indirect, of or on account
     of all or any portion of any  Subordinated  Indebtedness if, at the time of
     such payment or distribution or immediately after giving effect thereto all
     of the following four conditions shall be satisfied:
<PAGE>

               (i) a Material  Default shall have occurred  which (other than in
          the  case of a  default  under  section  6.01(f)  of the  Bank  Credit
          Agreement) permits the holder or holders of any Superior  Indebtedness
          to immediately accelerate the maturity thereof;

               (ii)  the  Operating   Company  and  the  holder  or  holders  of
          Subordinated Indebtedness shall have received written notice (given as
          provided in this Agreement)  (each a  "Subordination  Notice") of such
          Material   Default  from  the  holder  or  holders  of  such  Superior
          Indebtedness, or their representative or representatives (which notice
          shall  state  that  it is a  "Subordination  Notice"  and  shall  make
          explicit reference to the provisions of this section 10.4);

               (iii)  such  Material  Default  shall not have been  cured by any
          Obligor or waived in writing by the requisite holder or holders of the
          Superior  Indebtedness  with  respect to which such  Material  Default
          shall have occurred; and

               (iv)  less than 150 days  shall  have  elapsed  after the date of
          receipt by the Operating  Company and the holders of the  Subordinated
          Indebtedness of such Subordination Notice (any period during which the
          restrictions  imposed  by this  Section  10.4(a)  are in effect  being
          hereinafter referred to as a "Blockage Period");

     provided,  however, that, for the purpose of this section 10.4(a),  (x) not
     more than one Blockage  Period shall be in effect  during any period of 360
     consecutive  days, (y) Blockage Periods shall not be in effect on more than
     three occasions, and (z) no facts or circumstances  constituting a Material
     Default on the date any Subordination  Notice is given may be used or shall
     be effective as a basis for any subsequent Subordination Notice.

          (b) The  restrictions  imposed by section 10.4(a) shall cease to apply
     and the  Obligors  may  resume  payments  in  respect  of the  Subordinated
     Indebtedness  (including  any  payments  which  shall not have been made on
     account of the  provisions  of this section 10, but  excluding any payments
     which may have  become due solely on  account  of any  acceleration  of the
     maturity of the  Subordinated  Indebtedness)  or any judgment  with respect
     thereto upon the earliest to occur of (i) the cure of the Material  Default
     by any Obligor,  (ii) the written waiver thereof by the requisite holder or
     holders of the Superior  Indebtedness  with respect to which such  Material
     Default shall have occurred,  (iii) the  expiration of the Blockage  Period
     and (iv) the termination of such

<PAGE>

     Blockage  Period by such  requisite  holder  or  holders  of such  Superior
     Indebtedness.

          (c) In the event any of (i) a  default in the payment of any principal
     or  interest  that  constitutes  a  default  in  the  payment  of  Superior
     Indebtedness,  which default  continues  unremedied and unwaived,  (ii) the
     failure of the Obligors to pay any Superior  Indebtedness upon the maturity
     thereof or (iii) an  acceleration  of the maturity of the  principal of any
     Superior   Indebtedness   in  accordance  with  the  terms  thereof  (which
     acceleration   has  not  been   rescinded  or   annulled),   such  Superior
     Indebtedness  shall first be paid in full (in cash, Cash Equivalents of the
     kind  described in clause (a) of the  definition of such term,  other forms
     reasonably  satisfactory  to the  holder  or  holders  of at  least  75% in
     aggregate principal amount of the Superior  Indebtedness,  or a combination
     of the  foregoing) (or provision for such payment shall be made in a manner
     reasonably   satisfactory  to  the  holder  or  holders  of  such  Superior
     Indebtedness)  before any payment or distribution  (in cash,  properties or
     securities (other than Permissible Securities), by set-off or otherwise) is
     made on account of or applied on the Subordinated Indebtedness.

          (d) Nothing  herein  shall affect or impair the right of any holder of
     any Notes to apply any amount payable in respect  thereof to the payment of
     any amount due upon the exercise of any Warrants at any time.

     10.5. Payments and Distributions  Received.  If any payment or distribution
of any kind or character,  whether in cash,  property or securities  (other than
Permissible  Securities),  shall  be  received  by  any  holder  of  any  of the
Subordinated  Indebtedness in  contravention of this section 10, such payment or
distribution  shall be held in trust for the  benefit of, and shall be paid over
or delivered and  transferred to, the holders of the Superior  Indebtedness,  or
their  representative  or  representatives,  ratably  according to the aggregate
amount  remaining  unpaid  on  account  of  such  Superior   Indebtedness,   for
application  to the payment  thereof,  to the extent  necessary  to pay all such
Superior  Indebtedness in full, after giving effect to any concurrent payment or
distribution,   or  provision   therefor,   to  the  holders  of  such  Superior
Indebtedness,  provided, that amounts so paid over shall be returned promptly to
the  applicable  holders  of the  Subordinated  Indebtedness  in the  event  the
Superior Indebtedness was otherwise paid in full. In the event of the failure of
any holder of any of the Subordinated Indebtedness to endorse or assign any such
payment  or  distribution,  any  holder  of the  Superior  Indebtedness  or such
holder's  representative is hereby  irrevocably  authorized to endorse or assign
the same. 

     10.6.  Subrogation.  Subject  to  the  payment  in  full  of  all  Superior
Indebtedness,  in  case  cash,  property  or  securities  otherwise  payable  or
deliverable  to the  holders of the  Subordinated  Indebtedness  shall have been
applied  pursuant to this  section 10 to the  payment of Superior  Indebtedness,
then and in each such case, the holders of the Subordinated  Indebtedness  shall
be subrogated to the rights of each holder of Superior
<PAGE>

Indebtedness  to receive any further  payment or  distribution  in respect of or
applicable  to  the  Superior  Indebtedness;  and,  for  the  purposes  of  such
subrogation,  no payment or distribution to the holders of Superior Indebtedness
of any  cash,  property  or  securities  to which  any  holder  of  Subordinated
Indebtedness  would be entitled  except for the  provisions  of this  section 10
shall,  and no payment over pursuant to the provisions of this section 10 to the
holders of Superior Indebtedness by the holders of the Subordinated Indebtedness
shall as between  the  Obligors,  their  creditors  (other  than the  holders of
Superior Indebtedness) and the holders of Subordinated  Indebtedness,  be deemed
to be a payment by the Obligors to or on account of Superior Indebtedness.

     10.7.  Notice.  In the event that any  Subordinated  Indebtedness  shall be
transferred  and/or shall become due and payable  before the expressed  maturity
thereof as the result of the occurrence of a default, the Operating Company will
give  immediate  written  notice in writing of such  happening to each holder of
Superior  Indebtedness  (together,  in the case of any such  transfer,  with the
address of the  transferee for purposes of this section 10, it being agreed that
the holders of Superior  Indebtedness shall not be obligated to give to any such
transferee any notice  required  hereunder to be given by them to the holders of
Subordinated Indebtedness unless the holders of Superior Indebtedness shall have
received  such notice (and the address of such  transferee)  from the  Operating
Company  (or, in the case of any such  transfer,  a notice  from the  transferee
containing substantially the same information)).

     10.8.  Subordination  Not Affected,  etc. The terms of this section 10, the
subordination  effected  hereby and the rights  created hereby of the holders of
the  Superior   Indebtedness  shall  not  be  affected  by  (a)  any  amendment,
modification  or waiver of or  supplement  to any Superior  Indebtedness  or any
agreement,   document  or  instrument  relating  thereto,   provided  that  such
amendment,  modification,  waiver  or  supplement  is not in  violation  of this
Agreement,  (b) any exercise or non-exercise of any right, power or remedy under
or in  respect of any  Superior  Indebtedness  (or any  security  or  collateral
therefor) or pursuant to any agreement,  document or instrument relating thereto
or (c) any consent,  release,  indulgence,  delay or other  action,  inaction or
omission, in respect of any Superior Indebtedness (or any security or collateral
therefor) or pursuant to any agreement, document or instrument relating thereto,
whether or not any holder of any Subordinated Indebtedness shall have had notice
or knowledge of any of the foregoing.

     10.9. Obligations Unimpaired.  The provisions of this section 10 are solely
for the  purpose of  defining  the  relative  rights of the  holders of Superior
Indebtedness on the one hand and the holders of Subordinated Indebtedness on the
other hand, and (a) subject to the rights,  if any, under this section 10 of the
holders of Superior Indebtedness, nothing in this section 10 shall (i) impair as
among  the  Obligors  and  the  holder  of  any  Subordinated  Indebtedness  the
obligation of the Obligors,  which is unconditional and absolute,  to pay to the
holder  thereof all amounts due thereon in accordance  with the terms thereof or
(ii) except as otherwise  provided in section  10.11,  prevent the holder of any

<PAGE>

Subordinated Indebtedness from exercising all remedies available to such holder,
whether arising under the Operative Documents,  applicable law or otherwise, and
(b) no Person is entitled to any third party beneficiary rights or other similar
rights on  account of or under  this  section  10 other than the  holders of the
Superior  Indebtedness.  The  failure to make any  payment due in respect of the
Subordinated  Indebtedness  or to comply with any of the terms and conditions of
any of the  agreements,  documents and instruments  related to the  Subordinated
Indebtedness  by  reason  of any  provision  of this  section  10  shall  not be
construed as preventing  the  occurrence of any Default or Event of Default with
respect to the Subordinated Indebtedness.

     10.10. Holders of Subordinated Indebtedness Entitled to Assume Payments Not
Prohibited in Absence of Notice. No holder of Subordinated Indebtedness shall at
any time be charged  with  knowledge  of the  existence of any facts which would
prohibit  the making of any payment to it,  unless and until such  holder  shall
have received  written notice thereof (given as provided in this Agreement) from
the Operating  Company or from any holder of Superior  Indebtedness or any agent
or representative  thereof. Prior to the receipt of any such notice, each holder
of Subordinated  Indebtedness  shall be entitled to assume  conclusively that no
such facts exist, without, however, limiting any right of any holder of Superior
Indebtedness   under  this  section  10  to  recover  from  any  holder  of  the
Subordinated  Indebtedness any payment made in contravention of this section 10.
Each payment on the Subordinated  Indebtedness by the Operating Company shall be
deemed to constitute a representation of the Operating Company that such payment
is permitted to be paid by the Operating Company under this section 10.

     Each holder of Subordinated  Indebtedness  shall be entitled to rely on the
delivery  to it of a written  notice by a Person  representing  himself  to be a
holder of  Superior  Indebtedness  or to be the agent or  representative  of any
holder of Superior  Indebtedness to establish that such notice has been given by
any such  Person.  In the event that such  holder of  Subordinated  Indebtedness
determines  in good faith that further  evidence is required with respect to the
right of any such Person to participate in any payment or distribution  pursuant
to this section 10, such holder of  Subordinated  Indebtedness  may request such
Person to furnish  evidence  to the  reasonable  satisfaction  of such holder of
Subordinated  Indebtedness as to any fact pertinent to the rights of such Person
under this  section 1, and if such  evidence  is not  furnished,  such holder of
Subordinated  Indebtedness may defer any payment to such Person pending judicial
determination as to the right of such Person to receive such payment.

     10.11.  Limitation  on Right of  Action.  Notwithstanding  anything  to the
contrary  contained in this  Agreement,  the Notes or any of the other Operative
Documents,  the holders of the  Subordinated  Indebtedness  agree  that,  if any
Superior   Indebtedness  is  outstanding,   the  holders  of  the   Subordinated
Indebtedness  will not exercise any right or remedy available to them on account
of any  Default  or Event of Default  (other  than the right to  accelerate  the
Subordinated  Indebtedness in accordance with the terms thereof and the right to
exercise any of the  Warrants) at any time at which  payments may not be made in

<PAGE>

respect of the Subordinated  Indebtedness under section 10.4(a) unless and until
the first to occur of (a) the  holder or holders  of any  Superior  Indebtedness
shall have commenced  appropriate  proceedings (judicial or nonjudicial) for the
enforcement of their rights and remedies, including, without limitation, (i) any
action by any holder of any Superior Indebtedness against or with respect to any
Obligor to seek collection, or enforce collection, of any Superior Indebtedness,
or (ii) any exercise by any holder of any Superior  Indebtedness of any right to
foreclose on any security  interest or to sell any collateral or to exercise any
set-off or similar  right,  (b) a proceeding  under the  Bankruptcy  Code or any
similar state statute or law (including any law providing for the appointment of
a receiver or other similar  official)  shall have been  commenced by or against
either  Company  or any of  their  respective  Subsidiaries  (other  than by the
holders of the Subordinated Indebtedness), or (c) an Event of Default shall have
occurred and shall have continued uncured and unwaived for a period of 150 days,
provided that, in any event,  the holders of the  Subordinated  Indebtedness may
commence any legal proceeding or take any other appropriate action if and to the
extent necessary to prevent the imminent  expiration of any applicable period of
limitations or the loss of any right under any applicable statute of limitations
or other law.

11.   Registration, etc.

      11.1. Shelf Registration.

          (a) As soon as  practicable  following the Closing  Date,  the Holding
     Company shall prepare and file with the Commission a registration statement
     on Form S-3 with respect to all of the Registrable Shares and shall use its
     best efforts to cause such  registration  statement to become  effective as
     soon  as  practicable,  but in any  event  not  later  than  the  one  year
     anniversary  of the Closing Date, so as to permit the sale to the public of
     the Registrable Shares through such methods and means as shall be specified
     in such  registration  statement  at the  direction  of the  holders of the
     Registrable  Shares. The Holding Company shall use its best efforts to keep
     such  registration  statement  current and effective with respect to all of
     the  Registrable  Shares by such action as may be necessary or appropriate,
     including,  without limitation, the filing of post-effective amendments and
     supplements,  until  the  earlier  of (i)  the  second  anniversary  of the
     effectiveness of the registration  statement and (ii) the date on which all
     of the  Registrable  Shares  have been sold to the  public  pursuant  to an
     effective  registration  statement or in  accordance  with Rule 144 (or any
     similar provision then in force) under the Securities Act. In addition,  if
     at any time and from time to time prior to July 12,  2006,  a  registration
     statement  on Form S-3 is not  effective  with  respect to the  Registrable
     Shares  of  any  holder  thereof,  upon  the  request  of  such  holder  of
     Registrable  Shares,  the Holding  Company  shall prepare and file with the
     Commission  a  registration  statement  on Form  S-3 with  respect  to such
     holder's Registrable Shares (and the Registrable Shares of any other holder
     thereof who shall notify the Holding  Company,  within 10 days of receiving
     the notice referred to below in this Section 11.1(a), that it requests that
<PAGE>

     its  Registrable  Shares be included in such  registration  statement)  and
     shall use its best efforts to cause such  registration  statement to become
     effective as soon as practicable  following each such request of any holder
     of  Registrable  Shares,  so as to  permit  the sale to the  public of such
     Registrable  Shares through such methods and means as shall be specified in
     such  registration  statement at the  direction of the holder or holders of
     75% of the  Registrable  Shares to be  included in such  registration.  The
     Holding  Company  shall  use its best  efforts  to keep  such  registration
     statement  current and  effective  with  respect to all of the  Registrable
     Shares  included in such  registration  statement  by such action as may be
     necessary or  appropriate,  including,  without  limitation,  the filing of
     post-effective  amendments  and  supplements,  until the earlier of (i) the
     second anniversary of the effectiveness of such registration  statement and
     (ii) the date on which all of the Registrable  Shares have been sold to the
     public  pursuant to an effective  registration  statement or in  accordance
     with Rule 144 (or any similar provision then in force) under the Securities
     Act. Immediately  following its receipt of any holder's request to register
     Registrable  Shares,  the Holding Company shall notify each other holder of
     Registrable  Shares.  The Holding Company may be required  pursuant to this
     Section 11.1 to file (and keep effective) such  registration  statements on
     any number of occasions by the several holders of Registrable Shares.

          (b) The obligations of the Holding Company under this section 11.1 are
     subject to the following terms:

               (i) the Holding  Company  shall not  include in the  registration
          effected   pursuant  to  this  section   11.1  any  other   securities
          (including,  without  limitation,  any to be  issued  and  sold by the
          Holding  Company),  without the prior written consent of the holder or
          holders  of 75% of the  Registrable  Shares  to be  included  in  such
          registration; and

               (ii) the  Holding  Company  shall pay all  Registration  Expenses
          related to such registrations effected pursuant to this section 11.1.

          (c) The Companies jointly and severally represent and warrant that the
     Holding  Company has and shall  continue at all times to satisfy all of the
     conditions  to the use of Form  S-3,  including,  without  limitation,  the
     timely  filing of all reports  required to be filed under the  Exchange Act
     during the twelve calendar months preceding the date in question.

      11.2. Incidental Registration.

          (a) If the  Holding  Company  at any time or from  time to time  shall
     determine to effect the  registration,  qualification  and/or compliance of
     any of its Shares  (whether in  connection  with an offering by the Holding
     Company or others)  (otherwise  than  pursuant to a  registration  effected

<PAGE>

     pursuant to section 2 of the  Registration  Rights and  Holdback  Agreement
     dated as of July 12, 1996, by and between  Spectra-Physics  and the Holding
     Company  or a  registration  on a form  inappropriate  for an  underwritten
     public  offering or relating solely to securities to be issued in a merger,
     acquisition  of the  stock or  assets  of  another  entity  or in a similar
     transaction), then, in each such case, the Holding Company will:

               (i) promptly  give written  notice of the proposed  registration,
          qualification  and/or  compliance  (which shall  include a list of the
          jurisdictions  in which the  Holding  Company  intends to  register or
          qualify such  securities  under the applicable blue sky or other state
          securities  laws) to each holder of any Registrable  Shares;  and 

               (ii)  include  among  the  Shares  which  it  then  registers  or
          qualifies all Registrable  Shares specified by any holder thereof in a
          written request or requests, made within 30 days after receipt of such
          written notice from the Holding Company.

          (b) The obligations of the Holding Company under this section 11.2 are
     subject to the following terms:

               (i) the  Holding  Company  shall  pay all  Registration  Expenses
          related to any  registration,  qualification  or compliance  requested
          pursuant to this section 11.2; and

               (ii) if, in connection with any underwritten offering pursuant to
          this  section  11.2,  the  managing   underwriter(s)  shall  impose  a
          limitation on the number or kind of  securities  which may be included
          in any such registration  because,  in its reasonable  judgment,  such
          limitation is necessary to effect an orderly public distribution, then
          the Holding Company shall be obligated to include in such registration
          statement only such limited portion of the  Registrable  Shares (which
          may  be  none)  as is  determined  in  good  faith  by  such  managing
          underwriter,  provided  that, if any  securities are being offered for
          the  account of any  Person  other than the  Holding  Company  and the
          holders of the  Registrable  Shares,  the  reduction  in the number of
          Registrable Shares included in such registration shall not represent a
          greater  percentage  of the amount of  Registrable  Shares  originally
          requested  to be  registered  and sold in such  registration  than the
          lowest such percentage reduction imposed upon any other Person.

     11.3.  Permitted  Registration.  If and to the  extent  that any  holder or
holders of any  Registrable  Shares  shall have,  at the time of delivery of the
written request referred to in section 11.2, no present  intention of selling or
distributing  such securities,  the Holding Company shall be obligated to effect

<PAGE>

the registration, qualification and compliance of such securities of such holder
or holders  only if and to the  extent,  in each case,  that such  registration,
qualification  and  compliance  are  at the  time  permitted  by the  applicable
statutes  or  rules  and   regulations   thereunder  or  the  practices  of  the
governmental authority concerned.

     11.4.   Registration   Procedures.   In  the  case  of  each  registration,
qualification  and/or  compliance  contemplated  by this section 11, the Holding
Company will keep the holder or holders of Registrable Shares advised in writing
as to the initiation of proceedings  for such  registration,  qualification  and
compliance and as to the completion  thereof,  and will advise each such holder,
upon  request,  of the progress of such  proceedings.  In addition,  the Holding
Company will follow  procedures  customarily  observed by issuers in  registered
public offerings,  and accord to the holder or holders of Registrable Shares all
rights (including,  without  limitation,  the right to perform  appropriate "due
diligence")   customarily   accorded  to  selling   stockholders   in  secondary
distributions and to managing  underwriters if the transaction in question is or
were an underwritten public offering. At the expense of the Holding Company, the
Holding  Company  will in the case of each  registration,  qualification  and/or
compliance  contemplated by this section 11 (a) take all necessary  action under
any applicable blue sky or other state  securities law to permit the sale and/or
distribution of the Registrable Shares pursuant thereto, all as requested by the
holder or holders of  Registrable  Shares  included  therein,  provided that the
Holding  Company shall not be required to so register or qualify the Registrable
Shares in any jurisdiction  if, solely as a result thereof,  the Holding Company
must qualify  generally to do business  therein or consent to general service of
process  therein,  (b) comply  with  applicable  requirements  of all regulatory
entities,  including, without limitation, the National Association of Securities
Dealers,  Inc.,  (c) furnish each holder of Registrable  Shares included therein
such number of registration statements,  prospectuses,  supplements, amendments,
offering  circulars and other documents  incidental  thereto as such holder from
time to time may reasonably  request,  (d) list all  Registrable  Shares on each
securities  exchange on which  securities  of the same class are then listed and
(e) furnish (or cause to be furnished) to each holder of Registrable Shares, all
undertakings,  agreements,  certificates,  opinions,  financial  statements  and
"comfort  letters" of the sort customarily  provided to selling  stockholders in
secondary distributions and to the managing underwriters,  if the transaction in
question is or were an underwritten public offering.  Each holder of Registrable
Shares will furnish to the Holding  Company upon request by the Holding  Company
such  information  regarding  such holder and any  distribution  of  Registrable
Shares   proposed  by  such  holder  as  may  be  required  to  consummate   any
registration, qualification and/or compliance contemplated by this section 11.

     11.5.  Indemnification.  Without limiting the generality of section 21, the
Companies  will jointly and severally  indemnify,  defend and hold harmless each
holder of Registrable Shares included in any registration,  qualification and/or
compliance  contemplated  by  this  section  11 and  each  underwriter  of  such
securities,  and  each  Person,  if any,  who  controls  each  such  holder  and
underwriter  within the  meaning of the  Securities  Act,  and their  respective

<PAGE>

directors,  officers,  employees,  agents,  advisors and  Affiliates  (each,  an
"Indemnified  Person"),  to the fullest extent  enforceable under applicable law
against  all claims,  losses,  damages  and  liabilities  (or actions in respect
thereof)  arising out of or based on any untrue  statement  (or  alleged  untrue
statement)  of  a  material  fact  contained  in  any  registration   statement,
prospectus,  supplement,  amendment, offering circular or other document related
to any  registration,  qualification  or  compliance or any omission (or alleged
omission)  to state  therein a material  fact  required to be stated  therein or
necessary to make the statements  therein not  misleading,  or any violation (or
alleged  violation) of the Securities Act or other securities laws in connection
with any such registration, qualification or compliance, and will reimburse each
such Indemnified Person for any legal or any other expenses  reasonably incurred
in connection with  investigating  and/or  defending  (and/or  preparing for any
investigation or defense of) any such claim, loss, damage, liability,  action or
violation;  provided that the  Companies  will not be liable in any such case to
any such  Indemnified  Person if, but only to the extent  that,  any such claim,
loss, damage,  liability,  action, violation or expense is finally determined to
arise out of or result from any untrue  statement  in or omission  from  written
information  furnished to the Holding  Company by an instrument duly executed by
such  Indemnified  Person and stated to be  specifically  for use therein.  Each
holder of  Registrable  Shares  will,  if  securities  held by such  holder  are
included in a  registration  effected  pursuant to this  section 11,  indemnify,
defend and hold harmless the Holding Company, each of its directors and officers
who signs the related  registration  statement,  and each  Person,  if any,  who
controls the Holding Company within the meaning of the Securities  Act,  against
all claims,  losses,  damages and  liabilities  (or actions in respect  thereof)
arising out of or based on any untrue statement (or alleged untrue statement) of
a  material  fact  contained  in any such  registration  statement,  prospectus,
supplement,  amendment,  offering circular or other document or any omission (or
alleged omission) to state therein a material fact required to be stated therein
or necessary to make the statements  therein not misleading,  and will reimburse
the Holding Company and such directors, officers or Persons for any legal or any
other expenses reasonably incurred in connection with investigating or defending
(and/or  preparing for any  investigation  or defense of) any such claim,  loss,
damage, liability or action, in each case to the extent, but only to the extent,
that such untrue statement (or alleged untrue statement) or omission (or alleged
omission) was made in (or omitted from) such registration statement, prospectus,
supplement,  amendment, offering circular or other document in reliance upon and
in conformity  with written  information  furnished to the Holding Company by an
instrument  duly executed by such holder and stated to be  specifically  for use
therein;  provided that the liability of any such holder under this section 11.5
shall be limited to the net sales proceeds actually received by such holder as a
result of the sale by it of securities in such registration.


     11.6. Restrictions on Other Agreements.  The Holding Company will not grant
any right relating to the registration of its securities if the exercise thereof
interferes  with or is inconsistent  with or will delay (or could  reasonably be
expected to interfere  with or be  inconsistent  with or delay) the exercise and
enjoyment  of any of the rights  granted  under this  section  11,  without  the

<PAGE>

written consent of holders of 75% or more of (34) the Registrable  Shares at the
time issued and/or issuable,  which consent may be given or withheld in the sole
discretion  of such  holders.  The  Holding  Company  will not permit any of its
Subsidiaries to effect,  or to grant any right relating to, the  registration of
its securities.

12.   Put Rights.

     12.1.  Put Rights.  Each holder of Put  Securities (as defined below) shall
have the right to require the  Companies  to purchase  all or any portion of the
Put Securities owned by such holder  concurrently with the occurrence of any Put
Event  (as  defined  below),  in each  case at a  purchase  price  equal  to the
aggregate Put Price (as defined below) for such Put Securities. Each such holder
may  exercise  such  option  by  delivering  to the  Companies  a notice (a "Put
Notice")  specifying  that  the  Put  Securities  therein  described  are  to be
purchased  by the  Companies  and,  if the  Underlying  Securities  are not then
Publicly  Traded,  specifying the appraiser (first referred to in the definition
of Fair Value below) that shall  determine the Fair Value of the Put Securities.
Upon  receipt  of any  such Put  Notice  from a holder  of Put  Securities,  the
Companies  shall be  obligated,  jointly  and  severally,  to  purchase  the Put
Securities  specified  in such Put  Notice on the date upon which such Put Event
shall occur (the "Put Closing Date"),  unless in any case the Companies and such
holder agree to a different  date.  The closing for any payment of the Put Price
due to any holder of Put  Securities  under this section 12.1 shall occur at the
principal office of the Companies, unless the Companies and such holder agree to
a different  location,  and the aggregate Put Price shall be paid in immediately
available  funds  against  delivery  of the  certificates  evidencing  such  Put
Securities  as are to be purchased  from such holder at such  closing.  Promptly
after receipt by the Companies of a Put Notice from a holder of Put  Securities,
the Companies will notify each other holder of Put Securities of receipt of such
Put Notice and thereafter shall furnish to each holder such information relating
to the same as such holder may request  from time to time.  The  Companies  will
notify each holder of Put  Securities of the occurrence of any event which will,
or could  reasonably be expected to, result in a Put Event at least 30 days (but
not more than 60 days) prior to the occurrence of such Put Event.  The Companies
shall not permit a Put Event to be consummated unless the notice required by the
preceding  sentence  with  respect  to such  Put  Event  has been  delivered  in
accordance with such preceding sentence.

     12.2. Defined Terms. As used herein, the following terms have the following
respective meanings:

          "Current  Market  Price"  of any  Underlying  Security  as of any date
     herein specified shall mean the average of the daily closing prices for the
     30  consecutive  trading days  commencing 45 trading days before the day in
     question.  The closing  price for each day shall be (a) if such  Underlying
     Security  is listed or  admitted  for  trading on any  national  securities
     exchange, the last sale price of such Underlying Security,  regular way, or

<PAGE>

     the  average of the closing  bid and asked  prices  thereof if no such sale
     occurred,  in each case as officially reported on the principal  securities
     exchange  on  which  such  Underlying  Security  is  listed,  or (b) if not
     reported as  described  in clause  (a),  the average of the closing bid and
     asked prices of such Underlying Security in the over-the-counter  market as
     shown by the National  Association of Securities  Dealers,  Inc.  Automated
     Quotation  System,  if so quoted, as reported by any member firm of the New
     York Stock Exchange selected by the Companies.

          "Fair Value" shall mean the fair value of the appropriate Put Security
     as determined in accordance with generally  accepted  financial practice by
     an independent  appraiser of recognized  national  standing selected by the
     holders of a majority of the Put  Securities  requested  to be  repurchased
     (provided such appraiser is reasonably satisfactory to the Companies).  The
     Companies shall use their best efforts to enable the independent  appraiser
     to  provide  its  determination  not  later  than  10  days  following  its
     selection.  Each such  determination  of Fair  Value  shall be set forth in
     writing and shall be  conclusive  and binding on the  Companies  and on the
     holders of the Put Securities to be  repurchased.  The Companies  shall pay
     all of the expenses  incurred in connection  with each such  determination,
     including, without limitation, the expenses of each appraiser.

          "Publicly   Traded"  shall  mean,   with  respect  to  the  Underlying
     Securities or the equity  securities  referred to in the definition of "Put
     Event",  on any date,  listed  or  admitted  for  trading  on any  national
     securities  exchange  or  quoted  on  the  over-the-counter  market  of the
     National  Association  of  Securities  Dealers,  Inc.  Automated  Quotation
     System,  in each case on such date and during the immediately  preceding 45
     consecutive  days and having an average  daily  trading  volume of not less
     than 78,500 during such period.

          "Put Event" shall mean (a) the merger or  consolidation of the Holding
     Company or any of its Material  Subsidiaries  with or into  another  Person
     (other than a merger of the Holding  Company with or into  another  Person,
     the sole  purpose  and  result of which is to change  the  jurisdiction  of
     incorporation of the Holding Company to another state of the United States)
     which does not have a class of Publicly Traded equity securities registered
     under the  Exchange Act and where the  consideration  to be received by the
     holders of the Holding  Company's  Shares in connection with such merger or
     consolidation  does  not  consist  solely  of cash  payable  in  full  upon
     consummation of such merger or consolidation,  or (b) the sale, transfer or
     other   disposition  by  the  Holding   Company  or  any  of  its  Material
     Subsidiaries of all or any substantial part of its properties and assets to
     another  Person  for  consideration  which (i) is other  than (A)  Publicly
     Traded equity securities  registered under the Exchange Act and/or (B) cash
     and (ii) is then  distributed to the stockholders of the Holding Company or
     the holders of Superior Indebtedness.

          "Put Price" at any date,  as applied to any Put  Security,  shall mean
     (i) if the  Underlying  Securities are not then Publicly  Traded,  the Fair

<PAGE>

     Value thereof as of the date of occurrence of the  applicable Put Event and
     (ii) if the  Underlying  Securities are then Publicly  Traded,  the Current
     Market Price  thereof as of the date of occurrence  of the  applicable  Put
     Event.  The Put Price of any Warrant shall be reduced by an amount equal to
     the  amount  payable  upon  exercise  thereof  (if  and to the  extent  not
     otherwise paid to the Holding Company).

          "Put   Securities"   shall  mean  the  Warrants  and  the   Underlying
     Securities, each of which is a "Put Security".

     12.3 Continued Effect.  The provisions of this section 12 are applicable to
successive  Put  Events.  No  failure  on the  part  of any  holder  of the  Put
Securities to exercise any right under this section 12 arising on account of any
Put Event shall affect or impair any other right of such  holder,  in respect of
the Put  Securities or  otherwise,  under any of the  Operative  Documents.  The
covenants  contained in this section 12 shall  continue in effect so long as any
Put  Securities  are  outstanding  and,  without  limiting the generality of the
foregoing, shall survive the payment, prepayment and/or replacement of any other
Securities and any merger,  consolidation,  recapitalization,  sale of assets or
other similar  transaction or event  involving the Holding Company and/or any of
its Subsidiaries.

13.   Board Inspection Rights.

          (a) At any  reasonable  time and from  time to time,  upon  reasonable
     notice,  the  Companies  will permit any holder of the Notes or Warrants or
     any agents or representatives  thereof,  to examine and make abstracts from
     any  resolutions  and  consents  of, and any minutes  and other  records of
     meetings of, the respective boards of directors (and committees thereof) of
     the Holding  Company  and its  Subsidiaries,  and to discuss  the  affairs,
     finances and accounts of the Holding Company and its Subsidiaries  with any
     of their directors.

          (b) The Holding  Company  will meet at least once each  calendar  year
     with  representatives  of the holders of the Notes and  Warrants to discuss
     the  affairs,  finances  and  accounts  of  the  Holding  Company  and  its
     Subsidiaries.

14. Covenants of the Companies.  From and after the date of this Agreement,  and
thereafter so long as any of the Notes shall remain  outstanding,  the Companies
will duly perform and observe, for the benefit of the holders of the Notes, each
and all of the covenants and agreements  hereinafter set forth: 

          14.1.  Books of Record and Account;  Reserves.  Each Company will, and
     will cause each of its  Subsidiaries  to (a) at all times keep proper books
     of record and account in which full, true and correct entries shall be made
     of its  transactions in accordance with GAAP and (b) set aside on its books
     from its earnings for each fiscal year all such proper reserves as shall be
     required in accordance with GAAP in connection with its business.
<PAGE>


          14.2.  Payment  of  Taxes;   Existence;   Maintenance  of  Properties;
     Compliance with Laws; Lines of Business;  Proprietary  Rights. Each Company
     will, and will cause each of its Subsidiaries to:

               (a) pay and discharge promptly as they become due and payable all
          taxes,  assessments and other  governmental  charges or levies imposed
          upon it or its  income  or upon  any of its  property,  as well as all
          claims  of  any  kind  (including  claims  for  labor,  materials  and
          supplies)  which,  if  unpaid,  might by law  become  a Lien  upon its
          property;  provided  that no such Person  shall be required to pay any
          such  tax,   assessment,   charge,   levy  or  claim  if  the  amount,
          applicability or validity thereof shall currently be contested in good
          faith by  appropriate  proceedings  promptly  initiated and diligently
          conducted  and if it shall have set aside on its books such  reserves,
          if any,  with  respect  thereto  as are  required  by GAAP;  provided,
          further,   that  each  Company  will,  and  will  cause  each  of  its
          Subsidiaries to, pay any such tax,  assessment,  charge, levy or claim
          prior to the  commencement  of any  proceeding  to foreclose  any Lien
          securing the same;

               (b) do or cause to be done all things  necessary  to preserve and
          keep in full force and effect its  existence  (except  that nothing in
          this section  14.2(b) shall prohibit the  consummation  of any merger,
          consolidation or other business  combination  permitted under sections
          14.13, 14.14 and/or 14.15, as applicable);

               (c)  maintain and keep its  material  properties  in good repair,
          working  order  and  condition,  so that the  business  carried  on in
          connection  therewith may be properly and advantageously  conducted at
          all times;

               (d) comply in all material  respects  with all  applicable  laws,
          statutes,  rules,  regulations  and  orders  of,  and  all  applicable
          restrictions  imposed by, all  governmental  authorities in respect of
          the  conduct  of its  business  and  the  ownership  of  its  property
          (including, without limitation, all Environmental Laws); provided that
          no such Person shall be required by reason of this section  14.2(d) to
          comply  therewith  at any  time  while  it  shall  be  contesting  its
          obligation to do so in good faith by appropriate  proceedings promptly
          initiated and diligently conducted,  and if it shall have set aside on
          its books such reserves,  if any, with respect thereto as are required
          by GAAP;

               (e) engage only in the  Business  (and in other lines of business
          related to the Business)  substantially in the manner described in the
          Disclosure Document; and

               (f) own or  have a valid  license  for all  material  Proprietary
          Rights and Licenses used by it in the conduct of its business.

<PAGE>

          14.3.  Insurance.  Each  Company  will,  and  will  cause  each of its
     Subsidiaries  to, maintain with financially  sound and reputable  insurers,
     insurance with respect to its  properties  and  businesses  against loss or
     damage of the kinds  customarily  insured against by Persons of established
     reputation  engaged  in  the  same  or a  similar  business  and  similarly
     situated,  in such amounts and by such  methods as shall be  customary  for
     such Persons and reasonably deemed adequate by the Companies.

          14.4.  Limitation on Discount or Sale of Receivables.  Neither Company
     will, and neither Company will permit any of their respective  Subsidiaries
     to,  directly  or  indirectly,  discount  or  sell  any of  their  accounts
     receivable,  except  that each  Company or any such  Subsidiary  may settle
     doubtful  accounts  or may  grant  discounts  (such as  quantity  or prompt
     payment discounts) in the ordinary course of business.

          14.5.  Limitation  on Funded Debt and Current  Debt.  Neither  Company
     will, and neither Company will permit any of their respective  Subsidiaries
     to, be liable or create, assume, incur,  guarantee, or in any manner become
     liable, contingently or otherwise, in respect of any Funded Debt or Current
     Debt other than:

      (a)   in the case of the Holding Company and the Operating Company:

          (i) Funded Debt evidenced by the Notes;

          (ii) Funded Debt  evidenced  by the Seller  Notes,  but no  extension,
     refinancing, refunding or renewal thereof;

          (iii) Funded Debt and Current Debt  outstanding on the date hereof and
     referred to in Exhibit 5.9 attached  hereto  (excluding  any Funded Debt or
     Current Debt  evidenced by the Seller Notes or  outstanding  under the Bank
     Credit  Documents),  but no  extension,  refinancing,  refunding or renewal
     thereof;
 
          (iv) Funded  Debt or Current  Debt  outstanding  under the Bank Credit
     Documents  and under any  Refinancing  Agreement  (but no other  extension,
     refinancing,  refunding or renewal of the Bank Credit Documents),  provided
     that the aggregate  principal amount (and face amount of letters of credit)
     of such Funded Debt and Current  Debt  (A) under  the term loan  facilities
     established  by the Bank Credit  Agreement (or any  Refinancing  Agreement)
     shall at no time exceed (1) $84,000,000 minus (2) the sum of all repayments
     of the principal of such  Indebtedness  and (B) under the revolving  credit
     facility  established  by the Bank  Credit  Agreement  (or any  Refinancing
     Agreement) shall at no time exceed (1) $21,000,000 minus (2) the sum of all
     repayments of the principal of such Indebtedness  (other than any repayment
     that may be thereafter reborrowed under such revolving credit facility) and
     minus  (3)  the  sum of all  permanent  reductions  in  the  amount  of the
     borrowing availability under such revolving credit facility;

            (v)   additional Funded Debt or Current Debt not otherwise permitted

<PAGE>

     under this section 14.5, provided that, both at the time of and immediately
     after giving  effect to the  incurrence  thereof and the  retirement of any
     Indebtedness which is concurrently being retired:

               (A) no  Default or Event of Default  shall have  occurred  and be
          continuing; and

               (B) the aggregate outstanding principal amount of Funded Debt and
          Current Debt incurred  pursuant to this clause (v) shall not exceed at
          any time the greater of (1)  $10,000,000  and (2) such amount that, if
          incurred at the end of the immediately preceding fiscal quarter of the
          Holding Company, would have caused the Consolidated Indebtedness Ratio
          (calculated at the end of such fiscal quarter on a pro forma basis) to
          exceed 2.50 to 1.00; and

          (vi) Funded Debt and Current Debt owed to any Wholly-Owned Subsidiary;
     and

     (b) in the case of any  Subsidiary of the Holding  Company  (other than the
Operating Company):

          (i) Funded Debt evidenced by the Note Guarantees;

          (ii)  Funded  Debt  arising  under  Guarantees  of Funded  Debt of the
     Companies   permitted  under  section   14.5(a)(iii),   14.5(a)(iv)  and/or
     14.5(a)(v); and

          (iii)  Funded  Debt or  Current  Debt  (other  than  that of a Foreign
     Subsidiary) owed to the Holding Company or a Wholly-Owned Subsidiary (other
     than a Foreign Subsidiary),  provided that such Funded Debt or Current Debt
     is evidenced by a promissory note.

For  purposes of this section  14.5,  any Person  becoming a  Subsidiary  of the
Holding Company after the date hereof shall be deemed,  at the time it becomes a
Subsidiary, to have incurred all of its then outstanding Funded Debt and Current
Debt, and any Person  extending,  refinancing,  refunding or renewing any Funded
Debt or  Current  Debt  shall be deemed to have  incurred  such  Funded  Debt or
Current  Debt, as the case may be, at the time of such  extension,  refinancing,
refunding or renewal.

          14.6. Limitation on Restricted Payments; Payments on Seller Notes.

          (a) Neither Company will, and neither Company will permit any of their
     respective Subsidiaries to, directly or indirectly,  make or commit to make
     any  Restricted  Payment;  provided  that the  Holding  Company may acquire
     shares  of  Common  Stock  for an  aggregate  purchase  price not to exceed
<PAGE>

     $3,000,000 if, both at the time of each such purchase and immediately after
     giving effect thereto,  (i)  Consolidated  Net Worth shall be not less than
     $44,000,000 and (ii) no Default or Event of Default shall have occurred and
     be continuing.

          (b) Neither Company will, and neither Company will permit any of their
     respective  Subsidiaries  to, make any payment or  prepayment in respect of
     the  Seller  Notes if such  payment  or  prepayment  is  prohibited  by the
     subordination provisions of the Seller Notes.

          14.7. Certain Financial Covenants.  The Companies will, and will cause
     their respective Subsidiaries to:

     (a) Fixed Charge Coverage Ratio. Maintain at the end of each fiscal quarter
     of the Holding  Company  specified below in this section 14.7(a) a ratio of
     (i) (x)  Consolidated  EBITDA for the most recently  completed  four fiscal
     quarters of the Holding Company (provided that, if such four fiscal quarter
     period  includes  either or both of the fiscal quarters ending on March 31,
     1996 or June 30, 1996, Consolidated EBITDA shall be calculated by using Pro
     Forma  EBITDA  for each such  fiscal  quarter in such four  fiscal  quarter
     period)  less (y) the sum of (A)  Consolidated  Capital  Expenditures  made
     during such period plus (B) the aggregate amount of federal,  state,  local
     and foreign taxes paid by the Holding Company and its  Subsidiaries  during
     such  period to (ii) the sum of (w) cash  interest  payable by the  Holding
     Company  and its  Subsidiaries  on  Consolidated  Indebtedness  during such
     period,  plus (x) cash rentals  payable  under  Capital  Leases during such
     period,  plus (y) principal amounts of Consolidated Funded Debt and Current
     Debt  payable by the  Holding  Company  and its  Subsidiaries  during  such
     period,  plus (z) the aggregate  purchase price paid by the Holding Company
     and its  Subsidiaries  during such period to purchase  Common  Stock of the
     Holding  Company of not less than the ratio set forth below for such period
     (provided that if such four fiscal quarter period  includes  either or both
     of the  fiscal  quarters  ending on March 31,  1996 or June 30,  1996,  (i)
     Capital  Expenditures  for such four  fiscal  quarter  period  shall be the
     lesser of (A) the product of actual Capital  Expenditures  made during such
     period since the Closing  Date  multiplied  by a fraction the  numerator of
     which is four and the denominator of which is the number of fiscal quarters
     that have elapsed since the Closing Date and (B) $14,000,000, (ii) interest
     expense for such four  fiscal  quarter  period  shall be the product of the
     actual  amount of interest  expense  payable  during such period  since the
     Closing Date  multiplied  by a fraction the  numerator of which is four and
     the denominator of which is the number of fiscal quarters that have elapsed
     since the  Closing  Date and (iii)  aggregate  taxes paid  during such four
     fiscal  quarter period shall be the product of the actual taxes paid during
     such period since the Closing Date  multiplied  by a fraction the numerator
     of which is four and the  denominator  of  which is the  number  of  fiscal
     quarters have elapsed since the Closing):

<PAGE>

      Four Fiscal Quarters Ending Ratio

            12/31/96 ..............................  1.01
            3/31/97 ...............................  1.01
            6/30/97 ...............................  1.01
            9/30/97 ...............................  1.01
            12/31/97 ..............................  1.01
            3/31/98 ...............................  1.01
            6/30/98 ...............................  1.01
            9/30/98 ...............................  1.01
            12/31/98 ..............................  1.01
            3/31/99 and the last day of
            each fiscal quarter thereafter ........  1.15x

          (b)  Consolidated  Indebtedness  Ratio.  Maintain  at the  end of each
     fiscal  quarter of the  Holding  Company  specified  below in this  section
     14.7(b) a  Consolidated  Indebtedness  Ratio for such date of not more than
     the ratio set forth below for such period:

      Four Fiscal Quarters Ending Ratio

            9/30/96 ...............................  5.50x
            12/31/96 ..............................  5.50x
            3/31/97 ...............................  5.25x
            6/30/97 ...............................  5.25x
            9/30/97 ...............................  4.75x
            12/31/97 ..............................  4.75x
            3/31/98 ...............................  4.25x
            6/30/98 ...............................  4.25x
            9/30/98 ...............................  4.25x
            12/31/98 ..............................  4.25x
            3/31/99 and the last day of
            each fiscal quarter thereafter ........  3.75x

     (c) Senior Debt to EBITDA Ratio. Maintain at the end of each fiscal quarter
of the Holding  Company  specified  below in this section 14.7(c) a ratio of (i)
Consolidated  Senior Debt  outstanding on the last day of such fiscal quarter to
(ii) Consolidated EBITDA for the most recently completed four fiscal quarters of
the Holding Company  (provided that, if such four fiscal quarter period includes
any or all of the fiscal quarters ending on December 31, 1995, March 31, 1996 or
June 30, 1996, Consolidated EBITDA shall be calculated by using Pro Forma EBITDA
for each such fiscal quarter in such four fiscal quarter period), of not more
than the ratio set forth below for such period:


<PAGE>

      Four Fiscal Quarters Ending Ratio

            9/30/96 ...............................  4.00x
            12/31/96 ..............................  4.00x
            3/31/97 ...............................  4.00x
            6/30/97 ...............................  4.00x
            9/30/97 ...............................  3.50x
            12/31/97 ..............................  3.50x
            3/31/98 ...............................  3.00x
            6/30/98 ...............................  3.00x
            9/30/98 ...............................  3.00x
            12/31/98 ..............................  2.75x
            3/31/99 and the last day of
            each fiscal quarter thereafter ........  2.50x

     (d) Net Worth. Maintain at all times an excess of Consolidated Total Assets
over  Consolidated  Total Liabilities of not less than (i) $34,000,000 plus (ii)
50% of positive Consolidated Net Income (without adjustment for any loss) during
the  period  after June 30,  1996 to and  including  each date of  determination
computed on a cumulative basis for said entire period.
 
     14.8. Limitation on Investments.  Neither Company will, and neither Company
will permit any of their  respective  Subsidiaries  to,  directly or indirectly,
make or hold any Investment in any Person other than:

     (a)  Investments by the Holding  Company,  the Operating  Company and their
respective Subsidiaries in their Subsidiaries outstanding on the date hereof and
additional  Investments  in  Wholly-Owned  Subsidiaries  in an aggregate  amount
invested from the date hereof not to exceed $6,000,000  (provided that, not more
than an aggregate amount of $4,000,000,  may be invested from the date hereof in
Foreign Subsidiaries);

     (b) (i) loans to employees of the Holding  Company and its  Subsidiaries in
connection  with purchases of stock of the Holding  Company  pursuant to the PSC
Stock Option Plans in an aggregate  principal amount not to exceed $1,000,000 at
any time  outstanding  and (ii) loans and  advances to employees in the ordinary
course of business  of the  Holding  Company,  the  Operating  Company and their
respective  Subsidiaries as presently conducted in an aggregate principal amount
not to exceed $1,000,000 at any time outstanding;

     (c)  Investments by the Holding  Company,  the Operating  Company and their
respective Subsidiaries in Cash Equivalents;
 
     (d)  Investments by the Holding  Company,  the Operating  Company and their
respective Subsidiaries in Hedge Agreements permitted under section 14.11(c);
<PAGE>


     (e) Investments  consisting of intercompany  debt permitted by section 14.5
(b);

     (f)  Investments  (i) existing on the date hereof and  described on Exhibit
5.9 attached hereto or (ii) otherwise disclosed on such Exhibit 5.9; and

     (g)  other  Investments  in an  aggregate  amount  invested  not to  exceed
$3,000,000;  provided  that with respect to  Investments  made under this clause
(g); (i) any newly acquired or created  Subsidiary of the Holding  Company,  the
Operating  Company  or  any  of  their  respective   Subsidiaries   shall  be  a
Wholly-Owned  Subsidiary  Guarantor,  (ii)  immediately  before and after giving
effect  thereto,  no  Default or Event of Default  shall  have  occurred  and be
continuing  or would  result  therefrom;  and  (iii) any  business  acquired  or
invested in pursuant  to this  clause (g) shall be in the same  general  line of
business as the Holding Company, the Operating Company or any of
their respective Subsidiaries.

     14.9.  Limitation on Liens.  Neither Company will, and neither Company will
permit any of their  respective  Subsidiaries  to, create or suffer to exist any
Lien in respect of any  property  of any  character  (whether  owned on the date
hereof or hereafter acquired) other than:

          (a) any Lien created  pursuant to the Bank Credit  Documents  securing
     Funded Debt or Current Debt or other obligations of the Companies under the
     Bank Credit Agreement or any Guarantee  thereof by any Subsidiary,  in each
     case to the  extent  such  Funded  Debt or  Current  Debt  or  Guaranty  is
     permitted under section 14.5;

          (b) Permitted Liens;

          (c) any Lien  existing on the date  hereof and  referred to on Exhibit
     5.9 attached hereto;

          (d)  purchase  money  Liens  upon or in  real  property  or  equipment
     acquired or held by the Holding  Company,  the Operating  Company or any of
     their respective  Subsidiaries in the ordinary course of business to secure
     the purchase  price of such  property or equipment or to secure Funded Debt
     and/or  Current  Debt  incurred  solely for the  purpose of  financing  the
     acquisition,  construction or improvement of any such property or equipment
     to be subject to such  Liens,  or Liens  existing  on any such  property or
     equipment at the time of acquisition  (other than any such Liens created in
     contemplation  of such  acquisition that do not secure the purchase price),
     or  extensions,  renewals or  replacements  of any of the foregoing for the
     same or a lesser amount;  provided that (i) no such Lien shall extend to or
     cover any property  other than the property or  equipment  being  acquired,
     constructed  or improved,  and no such  extension,  renewal or  replacement

<PAGE>

     shall extend to or cover any property not  theretofore  subject to the Lien
     being extended, renewed or replaced and (ii) any Funded Debt and/or Current
     Debt secured by Liens permitted by this clause (d) shall be permitted under
     section 14.5(a)(v);

          (e) Liens arising in connection  with Capital Leases  permitted  under
     section 14.5(a)(v); provided that no such Lien shall extend to or cover any
     properties or assets other than the  properties  and assets subject to such
     Capital Leases; and

          (f) the  replacement,  extension  or renewal of any Lien  permitted by
     clauses  (c)  through  (e) above upon or in the same  property  theretofore
     subject thereto or the replacement,  extension or renewal (without increase
     in the amount or change in any direct or contingent  obligor) of the Funded
     Debt and/or Current Debt secured thereby.

In no event shall there be any Liens securing the Seller Notes.

     14.10.  Limitation on Transactions  with Affiliates.  Neither Company will,
and neither Company will permit any of their respective  Subsidiaries to, engage
in any  transaction  (including,  without  limitation,  the  purchase,  sale  or
exchange of any  properties and assets or the rendering of any services) with an
Affiliate of either Company or of any of their respective  Subsidiaries on terms
less favorable to either Company or any such Subsidiary in any material  respect
than would be obtainable at the time in  comparable  transactions  with a Person
not such an Affiliate.

     14.11.  Limitation  on  Rental  Obligations;  Capital  Expenditures;  Hedge
Agreements.  Neither  Company will, and neither Company will permit any of their
respective Subsidiaries to:

     (a) create,  incur, assume or suffer to exist any obligations as lessee (i)
for the rental or hire of real or personal  property in connection with any sale
and  leaseback  transaction  or  (ii) for  the  rental or hire of other  real or
personal  property of any kind under  leases or  agreements  to lease  including
Capital  Leases having an original term of one year or more that would cause the
Consolidated  Rental  Obligations  in respect of all such  obligations to exceed
$4,000,000 payable in any period of 12 consecutive months; or

     (b) make any Capital  Expenditures in any period set forth below that would
cause the aggregate of all such Capital  Expenditures  made by the Companies and
their  respective  Subsidiaries  in such  period to exceed  the amount set forth
below for such period:

<PAGE>

     Fiscal Quarter Ending                            Amount

      Closing Date through 12/31/96 ..............  $8,000,000

      Fiscal year ending 12/31/97 ................  14,000,000

      Fiscal year ending 12/31/98 ................  17,000,000

      Fiscal year ending 12/31/99 ................  20,000,000

      Fiscal year ending 12/31/2000 ..............  21,000,000

      Fiscal year ending 12/31/2001
      and each fiscal year ending thereafter .....  17,000,000

; or

     (c)  engage in any  transaction  involving  commodity  options  or  futures
contracts  or  any  similar  speculative   transactions  except  for  the  Hedge
Agreements permitted under Section 5.01(p) of the Bank Credit Agreement.

     14.12.  Limitation  on  Issuance  of Shares of  Subsidiaries.  The  Holding
Company will not permit any of its Subsidiaries to (a) issue,  sell or otherwise
dispose of any Shares (or any  securities  convertible  into or  exercisable  or
exchangeable  for  Shares)  of such  Subsidiary  except  to  either  Company  or
(b) except pursuant to the consummation of a transaction permitted under section
14.15,  sell,  transfer or  otherwise  dispose of any Shares (or any  securities
convertible  into or  exercisable  or  exchangeable  for  Shares)  of any  other
Subsidiary of either Company except to either Company. Each Company will not, in
any event,  permit  any  Subsidiary  of such  Company  to have  outstanding  any
Preferred  Shares.  The Holding Company shall at all times remain the sole owner
of all  outstanding  shares of capital  stock of the  Operating  Company and all
options or warrants to acquire the same.

     14.13.  Limitation on  Subsidiary's  Consolidation  or Merger.  The Holding
Company will not permit any of its  Subsidiaries  to  consolidate  with or merge
into  any  other  Person,  provided  that  (a) any  Subsidiary  (other  than the
Operating   Company)  may  consolidate  with  or  merge  into  any  Wholly-Owned
Subsidiary  Guarantor if the resulting or surviving Person of such consolidation
or  merger  is  a  Wholly-Owned  Subsidiary  Guarantor  and  is  not  a  Foreign
Subsidiary,  (b) any Foreign  Subsidiary may consolidate  with or merge into any
other  Foreign   Subsidiary  if  the  resulting  or  surviving  Person  of  such
consolidation  or merger is a  Wholly-Owned  Subsidiary  and (c) any  Subsidiary
(other than the  Operating  Company)  may merge into the Holding  Company if the
Holding Company is the surviving Person of such merger; provided,  further, that
in each case on the date of such consolidation or merger and after giving effect
thereto, no Default or Event of Default shall have occurred and be continuing.
<PAGE>

     14.14. Limitation on Holding Company's Consolidation or Merger. The Holding
Company will not consolidate with or merge into any other Person,  provided that
any  Subsidiary  (other than the  Operating  Company) may merge into the Holding
Company if the Holding Company is the surviving  Person of such merger and if on
the date of such merger and after giving effect thereto,  no Default or Event of
Default shall have occurred and be continuing.

     14.15.  Limitation on  Disposition of Property.  Neither  Company will, and
neither Company will permit any of their respective Subsidiaries to, directly or
indirectly,  sell,  lease or otherwise  dispose of  (including by way of merger,
consolidation or other business  combination) any of their respective properties
and assets (or any right, title or interest therein),  whether real, personal or
mixed, tangible or intangible, including, without limitation, Shares, securities
or Indebtedness of any Subsidiaries of either Company, except for:

          (a)  sales by the  Companies  and  their  respective  Subsidiaries  of
     inventory  in the  ordinary  course of  business  consistent  with  prudent
     business practice; and

          (b) other sales by the Companies and their respective  Subsidiaries of
     properties and assets for  consideration in any fiscal year in an aggregate
     amount not to exceed $2,000,000,  provided that in the case of this section
     14.15(b),  on the date of each such  disposition  and after  giving  effect
     thereto,  (i) no  Default or Event of Default  shall have  occurred  and be
     continuing  and (ii) the  Companies  shall be permitted to become liable in
     respect of at least $1 of  additional  Funded  Debt or  Current  Debt under
     section 14.5(a)(v); and

          (c)  sales by the  Companies  and  their  respective  Subsidiaries  of
     properties  and  assets in excess of the  limitations  set forth in section
     14.15(b),  provided that in the case of this section 14.15(c),  on the date
     of each such disposition and after giving effect thereto, (i) no Default or
     Event of Default shall have occurred and be continuing,  (ii) the Companies
     shall be permitted to become liable in respect of at least $1 of additional
     Funded  Debt or  Current  Debt  under  section  14.5(a)(v),  and  (iii) the
     aggregate  fair  market  value  (determined  in each case as of the date of
     disposition)  of all properties and assets  disposed of pursuant to section
     14.15(b) and this section  14.15(c) by the Companies  and their  respective
     Subsidiaries (A) since the beginning of the then current fiscal year of the
     Holding  Company is less than 10% of  Consolidated  Total  Assets as at the
     last day of the most recently  completed fiscal year of the Holding Company
     and (B)  since the  Closing  Date is less  than 30% of  Consolidated  Total
     Assets as at the last day of the most recently completed fiscal year of the
     Holding Company.

<PAGE>

A disposition  of  (x) property  made by any Subsidiary to either Company or (y)
obsolete  assets in the  ordinary  course of business  consistent  with  prudent
business practice shall be disregarded for purposes of this section 14.15.

     14.16.  Modification  of Certain  Documents,  Agreements  and  Instruments.
Neither  Company will, and neither  Company will permit any of their  respective
Subsidiaries to:

          (a) file any resolution of its board of directors (or other  governing
     body) with the Secretary of State of the  jurisdiction of its  organization
     if such resolution is related to the issuance of Preferred Shares or if the
     effect  thereof is, or could  reasonably be expected to be,  adverse to the
     interests of any holder of any of the Securities;

          (b) have a fiscal  year which ends on any date other than the last day
     of December; or

          (c)  amend,  modify,  supplement  or  waive  any  term,  condition  or
     provision  of its  Organizational  Documents  or  any  of  the  agreements,
     documents or  instruments  referred to in section 4.3,  including,  without
     limitation, the Acquisition Documents and the Bank Credit Documents, or any
     Refinancing  Agreement or enter into any Refinancing Agreement or any other
     agreement, document or instrument or transaction, if the effect thereof is,
     or could  reasonably  be expected to be,  adverse to the  interests  of any
     holder of any of the  Securities or to impose  restrictions  upon the right
     and obligation of the Companies to make payments on the Notes or to pay the
     Put  Price  under  section  12 that are more  restrictive  in any  material
     respect than those set forth in its Organizational  Documents or such other
     agreements,  documents  and  instruments  as in effect on the Closing Date.
     Without limiting the generality of the foregoing, neither Company will, and
     neither Company will permit any of their respective Subsidiaries to, amend,
     supplement,  modify or waive any term of the Bank Credit  Documents  or any
     Refinancing Agreement or enter into any Refinancing Agreement if the effect
     of any such amendment,  supplement,  modification,  waiver or entering into
     would be that,  after giving  effect  thereto,  (i) any of the terms of the
     Superior  Indebtedness  relating  to the amount of or timing of any payment
     (or  prepayment) of the principal of,  premium,  if any, or interest on any
     Superior  Indebtedness differs from the terms of the Superior  Indebtedness
     prior to giving effect thereto, (ii) the rate of interest payable on any of
     the Superior Indebtedness increases, (iii) the aggregate amount of Superior
     Indebtedness  increases  to an amount  greater  than the amount of Superior
     Indebtedness  permitted under the definition of Superior  Indebtedness,  or
     (iv) any of the terms and  provisions  of any  covenant or  agreement,  the
     breach  of  which  constitutes  or would  constitute  a  Material  Default,
     changes.


<PAGE>

      14.17. Further Assurances; Release of Note Guarantees.

          (a) From  time to time  hereafter,  the  Companies  will  execute  and
     deliver,  or will  cause to be  executed  and  delivered,  such  additional
     agreements,  documents and instruments and will take all such other actions
     as any  holder  or  holders  of the Notes may  reasonably  request  for the
     purpose of  implementing  or  effectuating  the provisions of the Operative
     Documents.

          (b) Without  limiting the  generality of the  foregoing,  in the event
     that  either  Company  at any  time or from  time to time  shall  elect  to
     organize or acquire any Subsidiary (subject to the limitations set forth in
     section 14.18),  then and in each such case such Company will promptly (but
     in any  event  not  later  than 20 days  prior  to  consummating  any  such
     transaction)  notify each holder of the Notes and,  not later than the date
     upon which such  transaction is consummated,  will cause to be executed and
     delivered,  to the  holder  or  holders  of the  Notes,  one or  more  Note
     Guarantees executed by such Subsidiary.

          (c) In the  event of a sale or other  disposition  to an  unaffiliated
     third party of all or substantially  all of the assets of a Subsidiary that
     has executed a Note Guarantee, such Subsidiary or the corporation acquiring
     such  assets,  as  applicable,   will  be  released  and  relieved  of  any
     obligations under the applicable Note Guarantee, provided that such sale or
     other   disposition  is  permitted  under  this  Agreement  and  the  Other
     Securities Purchase  Agreements,  including,  without  limitation,  section
     14.15 hereof and thereof.

     14.18. Additional  Subsidiaries.  Notwithstanding  anything to the contrary
set forth herein,  without the prior written consent of the Required  Holders of
the Notes,  neither  Company shall organize or acquire any Subsidiary  unless at
the time of any such  organization or acquisition  such Subsidiary shall execute
and deliver to each holder of any Notes a Note Guarantee.

     14.19  Limitation on Tax  Consolidation.  Neither Company will, and neither
Company will permit any of their respective Subsidiaries to, become a party to a
consolidated  or  combined  income  tax return  with any  Person  other than the
Companies and their respective Subsidiaries.

15. Definitions.  Note:  Bracketed items are  cross-references to the section or
sections of this  Agreement in which the specified  definitions  are used;  they
appear for  purpose of  convenience  only and do not affect the  meaning of such
definitions.

     15.1.  Definitions of Capitalized  Terms. The terms defined in this section
15.1,  whenever  used in this  Agreement,  shall,  unless the context  otherwise
requires, have the following respective meanings:

     "Accrued  Bankruptcy  Interest" shall have the meaning specified in section
10.

<PAGE>


     "Acquisition",    "Acquisition   Agreement",    "Acquisition   Corp."   and
"Acquisition  Documents" shall have the respective meanings specified in section
4.3.

     "Affiliate"  of any Person shall mean any other Person  which,  directly or
indirectly,  controls or is controlled  by or is under common  control with such
first-mentioned  Person,  or any  individual,  in the case of a Person who is an
individual,  who has a  relationship  by blood,  marriage  or  adoption  to such
first-mentioned  Person not more remote than first cousin, and, without limiting
the  generality  of the  foregoing,  shall  include (a) any Person  beneficially
owning or  holding  5% or more of any class of Voting  Stock or other  Shares of
such  first-mentioned  Person or (b) any  Person of which  such  first-mentioned
Person  owns or holds 5% or more of any class of Voting  Stock or other  Shares;
provided  that,  for  purposes  hereof,  in no  event  shall  you or  any  other
institutional  holder  of  Securities  be deemed  to be an  Affiliate  of either
Company.  For  the  purposes  of this  definition,  "control"  (including,  with
correlative  meanings,  the terms  "controlled  by" and  "under  common  control
with"), as used with respect to any Person, shall mean the possession,  directly
or  indirectly,  of the power to direct or cause the direction of the management
and policies of such Person, whether through the ownership of Voting Stock or by
contract or otherwise.

     "Bank Credit Agreement", "Bank Credit Documents" and "Banks" shall have the
respective meanings specified in section 4.3.

     "Bankruptcy Code" shall have the meaning specified in section 10.

     "Business" shall have the meaning specified in section 5.4.

     "Business  Day" shall mean any day other than a  Saturday,  Sunday or other
day  which  shall be in  Boston,  Massachusetts  or New  York,  New York a legal
holiday or a day on which banking  institutions therein are authorized by law to
close.

     "Capital  Expenditures" of any Person shall mean any payment made, directly
or indirectly, by such Person for the purpose of acquiring or constructing fixed
assets,  real property or  improvements  or equipment  which, in accordance with
GAAP,  would be added as a debit to the  fixed  asset  account  of such  Person,
including,  without limitation,  any payment made under any Capital Lease or any
conditional sale or other title retention agreement.

     "Capital  Lease"  shall mean any lease or similar  arrangement  which is of
such a nature that payment  obligations of the lessee or obligor  thereunder are
required to be capitalized and shown as liabilities upon a balance sheet of such
lessee or obligor  prepared in  accordance  with GAAP or for which the amount of
the asset and liability thereunder as if so capitalized should be disclosed in a
note to such balance sheet.

     "Cash Equivalents" shall mean any of the following,  to the extent owned by
the Holding Company or any of its Subsidiaries free and clear of all Liens other

<PAGE>
than Liens  created  under the Bank Credit  Documents:  (a)  readily  marketable
direct  obligations  of the  government  of the United  States of America or any
agency or instrumentality thereof or obligations  unconditionally  guaranteed by
the full faith and  credit of the  government  of the  United  States of America
having a maturity not later than 360 days from the date of issuance thereof, (b)
insured  certificates of deposit of or time deposits having a maturity not later
than 360 days from the date of issuance thereof with any commercial bank that is
a member of the Federal Reserve  System,  issues (or the parent of which issues)
commercial  paper rated as described in clause (c), is organized  under the laws
of the United  States of America or any state  thereof and has combined  capital
and surplus of at least $1 billion or (c) commercial paper having a maturity not
later than 180 days from the date of issuance  thereof in an aggregate amount of
no more than  $2,500,000  per  issuer  outstanding  at any  time,  issued by any
corporation  organized  under  the laws of any  state of the  United  States  of
America and rated at least "Prime-1" (or the then  equivalent  grade) by Moody's
Investors  Service,  Inc. or "A-1" (or the then equivalent  grade) by Standard &
Poor's Ratings Group.

     "Closing" and "Closing Date" shall have the respective  meanings  specified
in section 3.

     "Code" shall mean the Internal  Revenue Code of 1986,  as amended from time
to time.

     "Commission" shall mean the Securities and Exchange Commission or any other
federal  agency from time to time  administering  the  Securities Act and/or the
Exchange Act.

     "Common Stock" shall mean the Common Stock, $0.01 par value, of the Holding
Company as constituted on the Closing Date and any Shares into which such Common
Stock shall have been changed or any Shares resulting from any  reclassification
of the Common Stock.

     "Companies"  shall  mean the  Holding  Company  and the  Operating  Company
collectively.

     "Consolidated  Indebtedness  Ratio" shall mean,  at any date,  the ratio of
Consolidated  Indebtedness on the last day of the most recently completed fiscal
quarter of the  Holding  Company to  Consolidated  EBITDA for the most  recently
completed four fiscal  quarters of the Holding  Company  (provided that, if such
four fiscal quarter period  includes any or all of the fiscal quarters ending on
December 31, 1995, March 31, 1996 or June 30, 1996, Consolidated EBITDA shall be
calculated  by using the Pro Forma  EBITDA for each such fiscal  quarter in such
four fiscal quarter period).

     "Consolidated     EBITDA"     [14.7],     "Consolidated     Funded    Debt"
[14.7],"Consolidated   Indebtedness"  [14.7],  "Consolidated  Interest  Charges"
[14.7],  "Consolidated  Interest  Expense"  [14.7],  "Consolidated  Net  Income"

<PAGE>

[14.7],  "Consolidated  Rental Obligations" [14.7, 14.11]  "Consolidated  Senior
Debt" [14.7],  "Consolidated Total Assets" [14.7, 14.15] and "Consolidated Total
Liabilities" [14.7] shall mean the EBITDA, Funded Debt,  Indebtedness,  Interest
Charges,  Interest Expense, Net Income,  Rental Obligations,  Senior Debt, Total
Assets and Total Liabilities, as the case may be, of the Holding Company and its
Subsidiaries (whether or not ordinarily  consolidated in consolidated  financial
statements  of the  Holding  Company  and  Subsidiaries),  all  consolidated  in
accordance with GAAP, and after giving  appropriate  effect to outside  minority
interests,  if any, in Subsidiaries,  provided that in determining  Consolidated
Net Income there shall be excluded (a) the Net Income of any Person  (other than
a  Subsidiary  of the  Holding  Company)  in which the  Holding  Company  or any
Subsidiary  of the Holding  Company  has an  ownership  interest,  except to the
extent  that any such Net  Income  has been  actually  received  by the  Holding
Company or such  Subsidiary  in the form of dividends or similar  distributions,
(b) any  undistributed  Net Income of a Subsidiary of the Holding  Company which
for any reason is unavailable  for  distribution  to the Holding  Company or any
other  Subsidiary  of the  Holding  Company,  (c) the  Net  Income of any Person
accrued prior to the date it becomes a Subsidiary  of the Holding  Company or is
merged into or  consolidated  with the Holding  Company or a  Subsidiary  of the
Holding  Company,  (d) in the case of a  successor  to the  Holding  Company  by
consolidation,  merger or transfer of assets,  the Net Income of such  successor
accrued  prior to such  consolidation,  merger or transfer,  (e) any deferred or
other  credit  representing  the excess of the equity in any  Subsidiary  of the
Holding  Company  at the  date  of  acquisition  thereof  over  the  cost of the
investment  in  such  Subsidiary  and  (f)  any  restoration  to  income  of any
contingency  reserve,  except to the extent that  provision for such reserve was
made out of income accrued during the same period.

     "Current Debt" of any Person shall mean, at any date, without  duplication,
(a) all  Indebtedness  for borrowed money or in respect of Capital Leases or the
deferred purchase price of property (including, without limitation, Indebtedness
of the kind  referred to in clauses (b),  (c), (d) and (e) of the  definition of
Indebtedness),  whether or not  interest  bearing,  of such  Person at such date
which would, in accordance  with GAAP, be classified as short-term  Indebtedness
at such date, but specifically excluding the current maturities of such Person's
Funded Debt,  (b) all  Guarantees by such Person at such date of Current Debt of
others and (c) the aggregate  amount which is due on or before the expiration of
one year from such date in respect of any Redeemable Shares of such Person.

     "Current Market Price" shall have the meaning specified in section 12.

     "Default"  shall mean any  condition or event which  constitutes  or, after
notice or lapse of time or both, would constitute an Event of Default.

     "EBITDA" of any Person shall mean,  for any period,  the Net Income of such
Person for such period after restoring thereto amounts deducted for (a) Interest
Charges,  (b) taxes in respect of income and profits,  and (c)  amortization and
<PAGE>

depreciation, in each case determined in accordance with GAAP, excluding, in the
case of the  fiscal  quarter  in  which  the  Acquisition  is  consummated,  any
restructuring  charge  taken by the  Holding  Company  and its  Subsidiaries  in
connection with the Acquisition.

     "Environmental Laws" shall mean any law, statute, rule, regulation or other
governmental   standard  or  requirement  relating  or  pertaining  to  (a)  the
generation,  manufacture,   management,  handling,  use,  sale,  transportation,
treatment,  storage, disposal,  delivery,  discharge, release or emission of any
waste, pollutant or toxic,  hazardous or other substance,  or (b) any other act,
omission or condition  affecting or involving  the  environment  or air or water
pollution or soil or groundwater contamination.

     "ERISA" shall mean the Employee  Retirement Income Security Act of 1974, as
amended from time to time, and the regulations and rulings thereunder.

     "ERISA  Affiliate"  shall  mean  each  trade or  business  (whether  or not
incorporated) that,  together with either Company,  would be treated as a single
employer under section 4001(b) of ERISA, or that is a member of a group of which
either Company is a member and that is a controlled  group within the meaning of
section 4971(e)(2)(B) of the Code.

     "Event of Default" shall have the meaning specified in section 16.1.

     "Exchange Act" shall mean the Securities  Exchange Act of 1934, as amended,
or  any  successor  federal  statute,  and  the  rules  and  regulations  of the
Commission promulgated thereunder,  all as the same shall be in effect from time
to time.

     "Fair Value" shall have the meaning specified in section 12.

     "Foreign Subsidiary" shall mean each of the following:  (a) each Subsidiary
of the Holding Company identified as such on Exhibit 5.2 attached hereto and (b)
each  Subsidiary of the Holding  Company which is organized  under the laws of a
jurisdiction other than the United States of America or any state thereof.

     "Funded Debt" of any Person shall mean, at any date,  without  duplication,
(a) all  Indebtedness  for borrowed money or in respect of Capital Leases or the
deferred purchase price of property (including, without limitation, Indebtedness
of the kind  referred to in clauses (b),  (c), (d) and (e) of the  definition of
Indebtedness),  whether or not interest-bearing,  of such Person which would, in
accordance with GAAP, be classified as long-term  Indebtedness at such date, but
in any event including all such Indebtedness,  whether secured or unsecured,  of
such Person which matures (or which, pursuant to the terms of a revolving credit
agreement or otherwise, is directly or indirectly renewable or extendible at the
option of such Person for a period  ending) more than one year after the date of
the creation thereof,  notwithstanding the fact that payments in respect thereof
<PAGE>

(whether installment, serial maturity or sinking fund payments or otherwise) are
required  to be made by such  Person not more than one year after the date as of
which the  amount of Funded  Debt is being  determined,  other  than any  amount
thereof  which is at the time  included in Current Debt of such Person,  (b) all
Guarantees  by such  Person at such date of  Funded  Debt of others  and (c) the
aggregate  amount  which is due more than one year from such date in  respect of
any Redeemable Shares of such Person.

     "GAAP" shall mean generally accepted accounting  principles as in effect in
the United States from time to time, consistently applied.

     "Guarantee"  of any Person shall mean, at any date,  any obligation of such
Person at such date  guaranteeing,  directly or  indirectly,  any  Indebtedness,
liability  or other  obligation  of any other  Person in any manner,  but in any
event  including all  endorsements  (other than for collection or deposit in the
ordinary  course of business),  all discounts with recourse and all  obligations
incurred  through an agreement,  contingent  or  otherwise,  (a) to purchase the
obligations of any other Person or any security therefor or to advance or supply
funds for the payment or purchase of such obligations,  or (b) to purchase, sell
or lease (as lessee or lessor) property,  products,  materials or supplies or to
purchase  or sell  transportation  or  services,  primarily  for the  purpose of
enabling the obligor to make payment of such  obligations or to assure the owner
of such obligations against loss,  regardless of the delivery or non-delivery of
the property, products, materials or supplies or the furnishing or nonfurnishing
of the  transportation or services,  or (c) to provide funds for the payment of,
or obligating such Person to make, any loan,  advance,  capital  contribution or
other  investment  in the obligor for the purpose of assuring a minimum  equity,
asset base,  working capital or other balance sheet condition for any date or to
provide funds for the payment of any obligation,  dividend or stock  liquidation
payment, or otherwise to supply funds to or in any manner invest in the obligor.
The amount of any  Guarantee  shall be equal to the amount of all  Indebtedness,
liabilities and other obligations directly or indirectly guaranteed thereby.

     "Hedge Agreements" shall mean interest rate swap, cap or collar agreements,
interest rate future or option  contracts,  currency swap  agreements,  currency
future or option  contracts  and other  similar  agreements of the Companies and
their respective Subsidiaries.

     "Holding  Company"  shall mean PSC Inc.,  a New York  corporation,  and any
successor thereto.

     "Indebtedness"  of any Person shall mean,  at any date,  all  indebtedness,
liabilities and other  obligations of such Person at such date (other than items
of shareholders'  equity) which would, in accordance with GAAP, be classified as
liabilities of such Person, but in any event including (without duplication):

          (a) all Guarantees of such Person;
<PAGE>


          (b) all indebtedness, liabilities and other obligations secured by any
     Lien in  respect  of  property  owned by such  Person,  whether or not such
     Person has assumed or become liable for the payment of such obligations;

          (c) all indebtedness, liabilities and other obligations of such Person
     arising  under any  conditional  sale or other title  retention  agreement,
     whether or not the rights and  remedies of the seller or lender  under such
     agreement  in the event of default are limited to  repossession  or sale of
     such property;

          (d) the amount of the obligation required to be recorded by the lessee
     in respect of any Capital Lease under which such Person is lessee; and

          (e) all  indebtedness,  liabilities and other  obligations  arising in
     connection  with  letters of credit,  bankers  acceptances  or other credit
     enhancement facilities and Hedge Agreements.

     "Indemnified  Costs" and  "Indemnitee"  shall have the respective  meanings
specified in section 21.  

     "Indemnified Person" shall have the meaning specified in section 11.5.

     "Interest  Charges" of any Person shall mean, for any period, the aggregate
amount of all interest  paid,  payable or guaranteed  during such period by such
Person  in  respect  of  Funded  Debt  and  Current  Debt,  including,   without
limitation,  Rental Obligations on Capital Leases, determined in accordance with
GAAP.

     "Interest  Expense"  of any Person  shall mean,  for any  period,  Interest
Charges of such Person for such period net of interest  income for such  period,
whether paid or accrued,  and including,  without  limitation,  (a) commissions,
discounts  and other fees and  charges  payable in  connection  with  letters of
credit  and  (b) the  net  payment,  if any,  payable in  connection  with Hedge
Agreements  less the net  credit,  if any,  received  in  connection  with Hedge
Agreements.

     "Investment" of any Person shall mean any investment made by such Person in
any  other  Person  by stock  purchase,  capital  contribution,  loan,  advance,
acquisition of Indebtedness, Guarantee or otherwise.

     "Licenses"  shall mean  certificates  of public  convenience and necessity,
franchises,  licenses and other  permits and  authorizations  from  governmental
authorities.

     "Lien" shall mean any mortgage, pledge, hypothecation,  assignment, deposit
arrangement,  lien  (statutory or  otherwise),  preference,  priority,  security
interest,  chattel  mortgage or other charge or  encumbrance of any kind, or any
other type of preferential arrangement,  including, without limitation, the lien

<PAGE>


or retained  security title of a conditional  vendor and any easement,  right of
way or  other  encumbrance  on  title  to real  property  and any  lease  having
substantially the same effect as any of the foregoing.

     "Make Whole Amount" shall mean, at any date, with respect to any prepayment
or payment  (whether on account of  acceleration or otherwise) of any Notes (but
excluding any prepayment of Notes pursuant to section 9.3), if the Treasury Rate
plus 200 basis points at such date is lower than  11.25%,  the excess of (x) the
present value of the  principal  and interest  payments on and in respect of the
Notes being prepaid or paid, as the case may be, that would otherwise become due
and payable (without giving effect to such prepayment or payment) (including the
final payment on the maturity date of the Notes),  discounted at a rate which is
equal to the Treasury Rate plus 200 basis points over (y) the  principal  amount
of the Notes being  prepaid or paid, as the case may be, at par. If the Treasury
Rate plus 200 basis points at the date of such prepayment or payment is equal to
or higher than 11.25% per annum, the Make Whole Amount is zero.

     "Material Adverse Change" shall mean a material adverse change in or effect
upon any of (a) the condition (financial or otherwise),  business,  performance,
operations,  properties,  profits or prospects of the Operating  Company and its
Subsidiaries  taken as one enterprise,  the Holding Company and its Subsidiaries
taken as one enterprise or any of the material assets or liabilities acquired or
assumed  pursuant to the Acquisition  Agreement,  (b) the legality,  validity or
enforceability  of this Agreement,  the Securities or any of the other Operative
Documents,  (c) the rights and remedies of any holder of Securities with respect
to the  Securities  or (d) the ability of the  Holding  Company,  the  Operating
Company or any of the other  Material  Subsidiaries  to perform its  obligations
under any of the  Operative  Documents  and/or  to comply  with any of the terms
thereof applicable to it.

     "Material Default" shall have the meaning specified in section 10.

     "Material  Subsidiary"  shall mean, at any date of  determination,  (a) the
Operating Company and (b) any other Subsidiary which, in the case of this clause
(b),  individually or together with its  Subsidiaries,  (i) accounted  for 5% or
more  of  the  consolidated  gross  revenues  of the  Holding  Company  and  its
Subsidiaries,  determined  in accordance  with GAAP,  for the then most recently
completed period of four  consecutive  fiscal quarters of the Holding Company or
(ii) owns  (or own)  properties  and assets  (whether  real,  personal or mixed,
tangible or intangible) which have an aggregate fair market value equal to 5% or
more of the aggregate  fair market value of the  properties  and assets owned by
the Holding Company and its Subsidiaries, determined in accordance with GAAP, as
at the end of the then most  recently  completed  fiscal  quarter of the Holding
Company.

     "Merger"  and  "Merger  Agreement"  shall  have  the  respective   meanings
specified in section 4.3.

<PAGE>

     "Multiemployer  Plan" shall mean any Plan that is a "multiemployer plan" as
defined in section 4001(a)(3) of ERISA.

     "Net Income" of any Person shall mean,  for any period,  the net income (or
net  loss),   excluding  all   extraordinary,   unusual,   nonrecurring   and/or
nonoperating  items,  of such Person for such period,  determined  in accordance
with GAAP.

     "Note Guarantees" shall have the meaning specified in section 1.

     "Notes" shall have the meaning specified in section 1.

     "Obligors" shall have the meaning specified in section 10.

     "Officers'  Certificate"  shall mean a certificate signed on behalf of each
Company  by its  Chief  Executive  Officer,  its  President  or one of its  Vice
Presidents and its Chief  Financial  Officer,  Treasurer or one of its Assistant
Treasurers.

     "Operating Company" shall mean SpectraScan,  Inc., a Delaware  corporation,
and any successor thereto.

     "Operative  Documents"  shall  mean this  Agreement,  the Other  Securities
Purchase Agreements, the Securities, and each of the other agreements, documents
and instruments  executed in connection  herewith and therewith,  each as it may
from time to time be amended, modified or supplemented.

     "Organizational  Documents" of any Person shall mean such Person's  charter
and by-laws,  partnership agreement,  operating agreement,  trust agreement,  as
applicable, and/or any other similar agreement, document or instrument.

     "Other Securities  Purchase  Agreements" and "Other  Purchasers" shall have
the respective meanings specified in section 1.

     "PBGC" shall mean the Pension Benefit Guaranty  Corporation referred to and
defined in ERISA or any successor thereto.

     "Permissible Securities" shall have the meaning specified in section 10.

     "Permitted  Liens"  shall  mean  such  of  the  following  as to  which  no
enforcement,  collection,  execution,  levy or foreclosure proceeding shall have
been commenced:  (a) Liens for taxes,  assessments and  governmental  charges or
levies not yet due and payable; (b) Liens imposed by law, such as materialmen's,
mechanics',  carriers',  workmen's and repairmen's Liens and other similar Liens
arising in the ordinary  course of business  securing  obligations  that are not
overdue  for a period of more than 30 days;  (c) pledges  or  deposits to secure
obligations under workers' compensation laws or similar legislation or to secure

<PAGE>

public or  statutory  obligations;  and (d)  easements,  rights of way and other
encumbrances  on title to real property that do not render title to the property
encumbered thereby  unmarketable or materially  adversely affect the use of such
property for its present purposes.

     "Person"  shall  mean an  individual,  a  corporation,  an  association,  a
joint-stock  company,  a  business  trust  or  other  similar  organization,   a
partnership,  a  limited  liability  company,  a  joint  venture,  a  trust,  an
unincorporated  organization or a government or any agency,  instrumentality  or
political subdivision thereof.

     "Plan" shall mean an "employee benefit plan" (as defined in section 3(3) of
ERISA) that is or,  within the preceding  five years,  has been  established  or
maintained,  or to which  contributions are or, within the preceding five years,
have been made or required to be made, by either Company or any ERISA  Affiliate
or with  respect to which  either  Company or any ERISA  Affiliate  may have any
liability.

     "Preferred  Shares",  as applied to any  Person,  shall mean Shares of such
Person which shall be entitled to  preference  or priority over any other Shares
of such Person in respect of either the payment of dividends or the distribution
of assets upon liquidation.

     "Pro Forma  EBITDA"  shall  mean,  for the fiscal  quarters  of the Holding
Company  ending on December  31,  1995,  March 31, 1996 and June 30,  1996,  the
amount listed on Exhibit 15.1 attached hereto for such fiscal quarter.

     "Proprietary  Rights"  shall mean any  patents,  registered  and common law
trademarks,  service marks, trade names, copyrights,  licenses and other similar
rights  (including,  without  limitation,  know-how,  trade  secrets  and  other
confidential information) and applications for each of the foregoing, if any.

     "PSC Stock Option Plans" shall mean the 1987 Stock Option Plan and the 1994
Stock Option Plan of the Holding Company.

     "Publicly Traded" shall have the meaning specified in section 12.

     "Put  Closing  Date",  "Put  Event",  "Put  Notice",  "Put  Price" and "Put
Securities" shall have the respective meanings specified in section 12.

     "Redeemable"  shall mean,  with  respect to any shares of any Person,  each
share of such Person that is (a) redeemable, payable or required to be purchased
or otherwise retired or extinguished, or convertible into Funded Debt or Current
Debt of such Person,  (i) at a fixed or determinable  date, whether by operation
of any sinking  fund or  otherwise,  (ii) at the option of any Person other than
such Person or  (iii) upon  the  occurrence of a condition not solely within the
control of such Person or (b) convertible into other Redeemable shares.

     "Refinancing Agreement" shall have the meaning specified in section 10.

<PAGE>


     "Registrable Shares" shall mean the Underlying Securities,  except that, as
to any particular  Registrable Shares, such securities,  once issued, will cease
to be  Registrable  Shares  when  (a) a  registration  statement  covering  such
securities has been declared effective and such securities have been disposed of
pursuant to an effective  registration statement or (b) such securities are sold
to the public in  accordance  with Rule 144 (or any  similar  provision  then in
force)  under the  Securities  Act. A Person  shall be deemed to be a "holder of
Registrable  Shares" for the purposes of section 11 if such Person is the holder
of any Warrants and/or any Underlying Securities.

     "Registration  Expenses"  shall mean all fees,  expenses and  disbursements
related to any registration, qualification or compliance pursuant to section 11,
including,  without  limitation,  all registration,  filing,  rating and listing
fees,  blue  sky fees  and  expenses,  printing  expenses,  reasonable  fees and
disbursements of counsel (including,  without limitation, the fees, expenses and
disbursements  of counsel for the holder or holders of the Registrable  Shares),
and expenses of any special audits incident to or required by any  registration,
qualification or compliance, except that Registration Expenses shall not include
any  underwriters'  discounts or  commissions  attributable  to any  Registrable
Shares registered and sold pursuant to any such registration.

     "Rental  Obligations"  of any Person shall mean, for any period,  all rents
and  other  amounts  (including  as such,  all  payments  which  such  Person is
obligated to make to the lessor on  termination of any lease and/or on surrender
of the leased property other than payments for which such Person is contingently
liable on account of early termination or breach of such lease) paid, payable or
guaranteed  during such period by such Person,  as lessee or sublessee under any
lease,  including,  without  limitation,  any amount required to be paid by such
Person  (whether or not  designated as rents or additional  rents) on account of
maintenance,   repairs,   insurance,   taxes,  utilities  and  similar  charges,
determined  in accordance  with GAAP.  Whenever it is necessary to determine the
amount of Rental  Obligations  for any  period,  to the extent  that such Rental
Obligations  are not  definitely  determinable  by the terms of the  lease,  the
Rental  Obligations  not so definitely  determinable  shall be estimated in good
faith  and in such  reasonable  manner  as the Chief  Financial  Officer  of the
Holding  Company may  determine  (as  evidenced  by a  certificate  of the Chief
Financial Officer promptly delivered to the holder or holders of the Notes).

     "Required  Holders" as applied to describe the requisite  holder or holders
of any class of the  Securities,  shall mean, at any date, the holder or holders
of 75% or more in interest of such class of Securities  at the time  outstanding
(excluding  all  Securities at the time owned by either Company or any Affiliate
of either Company).

     "Restricted Payment" as applied to any Person shall mean:

          (a) any dividend or other distribution, direct or indirect, on account
     of any  Shares of such  Person  now or  hereafter  outstanding  (including,
     without limitation, Preferred Shares) or any securities convertible into or

<PAGE>

     exercisable  or  exchangeable  for such  Shares or any  rights,  options or
     warrants  to acquire  any such  Shares,  except  (i) any  such  dividend or
     distribution  payable to the Holding Company,  the Operating Company and/or
     any  Wholly-Owned  Subsidiary  Guarantor  and (ii) a pro rata  distribution
     payable to all of the  stockholders of the Holding Company solely in shares
     of Common Stock of the Holding Company and as a result of which there is no
     change in the relative ownership interest of any stockholder in the Holding
     Company or any of such stockholder's rights; and

          (b) any redemption,  retirement, purchase or other acquisition, direct
     or  indirect,  of any Shares of such  Person now or  hereafter  outstanding
     (including,  without  limitation,   Preferred  Shares)  or  any  securities
     convertible  into or  exercisable  or  exchangeable  for such Shares or any
     rights, options or warrants to acquire any such Shares;

provided that,  notwithstanding  the foregoing,  the term  "Restricted  Payment"
shall not include any dividend or other distribution paid on, or any redemption,
retirement,  purchase or other  acquisition  of, or other payment in respect of,
any of the Securities.

     "Scanning" shall have the meaning specified in section 4.3.

     "Scanning Shares" shall have the meaning specified in section 4.3.

     "Securities"  shall mean the Notes,  the Warrants  and,  unless the context
clearly  requires  otherwise,  the  Underlying  Securities,  each of  which is a
"Security".

     "Securities Act" shall mean the Securities Act of 1933, as amended,  or any
successor  federal  statute,  and the rules and  regulations  of the  Commission
promulgated thereunder, all as the same shall be in effect from time to time.

     "Seller Notes" shall have the meaning specified in section 4.3.

     "Sellers" shall have the meaning specified in section 4.3.

     "Senior  Debt" of any Person shall mean at any date,  all  Indebtedness  of
such  Person  outstanding  on such date under the Bank Credit  Documents  or any
Refinancing Agreement and any Hedge Agreements.

     "Shares" of any Person shall  include any and all shares of capital  stock,
partnership  interests,   membership  interests,  or  other  shares,  interests,
participations or other equivalents (however designated and of any class) in the
capital of, or other ownership interests in, such Person, and, as applied to the
Holding Company, includes Common Stock.
<PAGE>

     "Solvent" as applied to any Person at any date shall mean that on and as of
such date (a) the fair value of the  property of such Person is greater than the
total  amount  of  liabilities,   including,   without  limitation,   contingent
liabilities, of such Person, (b) the present fair salable value of the assets of
such  Person  is not less  than the  amount  that  will be  required  to pay the
probable  liability  of such  Person on its debts as they  become  absolute  and
matured,  (c) such Person does not intend to, and does not believe that it will,
incur debts or liabilities beyond such Person's ability to pay as such debts and
liabilities  mature  and  (d) such  Person  is  not  engaged  in  business  or a
transaction,  and is not about to engage in business or a transaction, for which
such Person's  property would  constitute an  unreasonably  small  capital.  The
amount of contingent  liabilities on and as of any date shall be computed as the
amount that, in the light of all the facts and circumstances  existing on and as
of such date, represents the amount that can reasonably be expected to become an
actual or matured liability.

     "Source" shall have the meaning specified in section 26.

     "Special  Prepayment  Premium" shall mean the premium payable  concurrently
with each  prepayment  of Notes  pursuant to section 9.3 (such  premium  being a
percentage of the principal amount so prepaid) applicable in accordance with the
following  table  depending  upon the 12-month  period in which such  prepayment
occurs:

                    12-Month Period
                    Ending June 30,                       Premium

                        1997 ...........................    5%
                        1998 ...........................    5%
                        1999 ...........................    5%
                        2000 ...........................    4%
                        2001 ...........................    3%
                        2002 ...........................    2%
                        2003 ...........................    1%
                        2004 and thereafter ............    0%

     "Spectra-Physics" shall have the meaning specified in section 4.3.

     "Spectra SA" shall have the meaning specified in section 4.3.

     "Stock/Asset Purchase" shall have the meaning specified in section 4.3.

     "Subordinated Indebtedness" shall have the meaning specified in section 10.

     "Subsidiary"  of any Person at any date  shall mean (a) any other  Person a
majority  (by  number of votes)  of the  Voting  Stock of which is owned by such
first-mentioned  Person  and/or  by one  or  more  other  Subsidiaries  of  such
first-mentioned  Person  and (b) any other  Person  with  respect  to which such

<PAGE>

first-mentioned  Person  and/or  any  one or  more  other  Subsidiaries  of such
first-mentioned Person (i) is entitled to more than 50% of such Person's profits
or losses or more than 50% of such Person's  assets on liquidation or (ii) holds
an equity  interest in such Person of more than 50%. As used herein,  unless the
context clearly required otherwise, the term "Subsidiary" refers to a Subsidiary
of the Holding Company.

     "Superior Indebtedness" shall have the meaning specified in section 10.

     "Total Assets" of any Person shall mean, at any date, the net book value of
the assets of such  Person as would be shown on a balance  sheet of such  Person
prepared in accordance with GAAP.

     "Total Liabilities" of any Person shall mean, at any date, the total amount
of the  liabilities  of such Person as would be shown on a balance sheet of such
Person prepared in accordance with GAAP.

     "Treasury Rate" at any time with respect to any Notes being prepaid or paid
(whether on account of  acceleration  or  otherwise),  as the case may be, shall
mean and shall be determined by reference to the applicable display on Bloomberg
Financial  Markets Service as of 10:00 A.M., Boston time, on the second Business
Day prior to the date fixed for such  prepayment or payment (or, if such display
is no longer available,  any publicly  available source of similar market data),
and shall be the yield on actively  traded  United  States  Treasury  securities
adjusted to a maturity  equal to the then  remaining  Weighted  Average  Life to
Maturity  of the Notes  then  being  prepaid  or paid  (whether  on  account  of
acceleration or otherwise) (the "Remaining  Life"). If the Remaining Life is not
equal to the maturity of a United States Treasury  security for which a yield is
given, the Treasury Rate shall be obtained by linear  interpolation  (calculated
to the nearest  one-twelfth of a year) from the weekly average yields of the two
closest  United  States  Treasury  securities  for which such  yields are given,
except that if the  Remaining  Life is less than one year,  the average yield on
actively  traded  United  States  Treasury  securities  adjusted  to a  constant
maturity of one year shall be used.  The Treasury  Rate shall be computed to the
fifth decimal place  (one-thousandth  of a percentage point) and then rounded to
the fourth decimal place (one-hundredth of a percentage point).

     "TxCom" shall have the meaning specified in section 4.3.

     "TxCom Shares" shall have the meaning specified in section 4.3.

     "Underlying  Securities"  shall mean any Shares  (or Other  Securities  (as
defined in the Warrants)) issued or issuable, as applicable upon exercise of any
Warrants, each of which is an "Underlying Security".

     "Voting Stock",  when used with reference to any Person,  shall mean Shares
(however  designated)  of such  Person  having  ordinary  voting  power  for the
<PAGE>

election  of a  majority  of the  members  of the board of  directors  (or other
governing  body) of such  Person,  other than  Shares  having such power only by
reason of the happening of a contingency.

     "Warrants" shall have the meaning specified in section 1.

     "Weighted Average Life to Maturity" of any Indebtedness or obligation shall
mean, at any date,  the number of years  obtained by dividing the then Remaining
Dollar-years  of  such  Indebtedness  or  obligation  by  the  then  outstanding
principal  amount of such  Indebtedness  or  obligation.  For  purposes  of this
definition, the "Remaining Dollar-years" of any Indebtedness or obligation shall
mean, at any date,  the total of the products  obtained by  multiplying  (a) the
amount of each then  remaining  installment,  sinking fund,  serial  maturity or
other required payment, including payment at final maturity, in respect thereof,
by (b) the number of years  (calculated to the nearest  one-twelfth)  which will
elapse between such date and the making of such payment.

     "Wholly-Owned  Subsidiary" shall mean any Subsidiary all of the outstanding
Shares of which, other than directors'  qualifying Shares,  shall at the time be
owned  by  the  Holding  Company  and/or  by  one  or  more  other  Wholly-Owned
Subsidiaries  and the  accounts  of which  are  consolidated  with  those of the
Holding Company in accordance with GAAP.

     "Wholly-Owned  Subsidiary Guarantor" shall mean any Wholly-Owned Subsidiary
which has delivered to each holder of any Notes a valid, binding and enforceable
Note Guarantee.

     "Withdrawal  Liability" shall have the meaning given such term under Part 1
of Subtitle E of Title IV of ERISA.

     15.2. Other Definitions.  The terms defined in this section 15.2,  whenever
used in this Agreement,  shall, unless the context otherwise requires,  have the
respective meanings hereinafter specified.

     "this  Agreement"  (and similar  references  to any of the other  Operative
Documents)  shall mean,  and the words "herein" (and  "therein"),  "hereof" (and
"thereof"),  "hereunder"  (and  "thereunder")  and words of similar import shall
refer to, such instruments as they may from time to time be amended, modified or
supplemented.

     a "class" of Securities  shall refer to the Notes,  the Warrants and/or the
Underlying Securities, as the case may be, each of which is a separate class.

     "corporation" shall include an association,  joint stock company,  business
trust or other similar organization.

<PAGE>

     "premium"  when used in  conjunction  with  references  to principal of and
interest on the Notes,  shall mean any amount due upon any payment or prepayment
of any of the Notes,  other than  principal  and interest and shall  include the
Make Whole Amount and the Special Prepayment Premium.

     "qualification"  or  "compliance"  as  used  in  section  11  refer  to the
qualification   or  compliance  of  all  Registrable   Shares  included  in  any
registration pursuant to section 11 under all applicable blue sky or other state
securities laws.

     "register",  "registered" and "registration" as used in section 11 refer to
a registration  effected by filing a registration  statement in compliance  with
the Securities Act to permit the sale and disposition of the Registrable  Shares
and any amendment filed or required to be filed to permit any such disposition.

     15.3. Accounting Terms and Principles; Laws.

          (a) All accounting  terms used herein which are not expressly  defined
     in this  Agreement  shall  have the  respective  meanings  given to them in
     accordance  with GAAP,  all  computations  made pursuant to this  Agreement
     shall be made in accordance with GAAP and all financial statements shall be
     prepared in accordance with GAAP.

          (b) All references  herein to laws,  statutes,  rules and  regulations
     shall, unless the context clearly requires otherwise, be deemed to refer to
     any law, statute, rule, regulation and any other governmental  restriction,
     standard  and/or  requirement  promulgated,  issued and/or  enforced by any
     domestic  or  foreign  federal,  state  or local  government,  governmental
     agency,  authority,  court,  instrumentality or regulatory body, including,
     without  limitation,  those of the  United  States of  America or any state
     thereof or the District of Columbia.

16.   Remedies.

     16.1.  Events of Default Defined;  Acceleration of Maturity.  If any one or
more of the following  events  ("Events of Default")  shall occur  (whatever the
reason  for  such  Event of  Default  and  whether  it  shall  be  voluntary  or
involuntary  or be effected  by  operation  of law or pursuant to any  judgment,
decree  or  order  of  any  court  or  any  order,  rule  or  regulation  of any
administrative or governmental body), that is to say:

          (a) if default shall be made in the due and punctual payment of all or
     any part of the  principal of, or premium (if any) on, any Note when and as
     the same shall  become  due and  payable,  whether  at the stated  maturity
     thereof, by notice of or demand for prepayment, or otherwise;
<PAGE>

          (b) if default  shall be made in the due and  punctual  payment of any
     interest on any Note when and as such interest shall become due and payable
     and such default shall have continued for a period of five Business Days;

          (c) if default shall be made in the  performance  or observance of any
     covenant,  agreement or condition  contained in sections  7(g), 8, 9.7, 12,
     13, 14.2(b) or 14.5 to 14.19, inclusive;

          (d) if default shall be made in the  performance  or observance of any
     other  of  the  covenants,  agreements  or  conditions  contained  in  this
     Agreement or any of the other  Operative  Documents  and such default shall
     have  continued  for a period of 30 days after the  earlier to occur of (i)
     either Company's  obtaining actual knowledge of such default or (ii) either
     Company's receipt of written notice of such default;

          (e) if the Holding  Company or any Material  Subsidiary of the Holding
     Company shall make a general  assignment  for the benefit of creditors,  or
     shall not pay its debts as they  become  due, or shall admit in writing its
     inability  to pay its debts as they  become  due, or shall file a voluntary
     petition in bankruptcy,  or shall be adjudicated bankrupt or insolvent,  or
     shall file any  petition or answer  seeking for itself any  reorganization,
     arrangement, composition, readjustment, liquidation, dissolution or similar
     relief under any present or future  statute,  law or  regulation,  or shall
     file any answer  admitting or not contesting the material  allegations of a
     petition filed against it in any such proceeding,  or shall seek or consent
     to or acquiesce in the  appointment  of any trustee,  custodian,  receiver,
     liquidator or fiscal agent for it or for all or any substantial part of its
     properties,  or shall (or its  directors  or  stockholders  shall) take any
     action looking to its dissolution or liquidation;

          (f) if, within 30 days after the commencement of an action against the
     Holding  Company or any Material  Subsidiary of the Holding Company seeking
     any reorganization,  arrangement, composition,  readjustment,  liquidation,
     dissolution or similar relief under any present or future  statute,  law or
     regulation,  such  action  shall not have been  dismissed  or all orders or
     proceedings  thereunder  affecting  the  operations  or the business of the
     Holding Company or such Material  Subsidiary  stayed, or if the stay of any
     such order or proceeding  shall  thereafter be set aside,  or if, within 30
     days after the  appointment  without  the  consent or  acquiescence  of the
     Holding  Company or such  Material  Subsidiary  of any trustee,  custodian,
     receiver,  liquidator  or  fiscal  agent  for the  Holding  Company  or any
     Material  Subsidiary of the Holding  Company or for all or any  substantial
     part of their respective  properties,  such appointment shall not have been
     vacated;

          (g) if,  under  the  provisions  of any law for the  relief  or aid of
     debtors,  any court or governmental agency of competent  jurisdiction shall
<PAGE>

     assume  custody  or  control  of the  Holding  Company  or of any  Material
     Subsidiary  of the  Holding  Company or of all or any  substantial  part of
     their  respective  properties  and such  custody  or  control  shall not be
     terminated  or stayed  within 30 days from the date of  assumption  of such
     custody or control; 

          (h) if (i)  the  Holding  Company  or any  Subsidiary  of the  Holding
     Company shall fail to (A) make any payment due on any  Indebtedness  (other
     than the Notes  and  other  than the  Indebtedness  under  the Bank  Credit
     Documents (or any Refinancing  Agreement)) or other  obligation  (including
     any in respect of any lease or any Shares  upon the  exercise by any Person
     of any  put or  call  option  or  other  similar  right  of  redemption  or
     repurchase  with regard to such Shares in accordance with the terms of such
     option or right), if the aggregate  outstanding  amount thereof (and of any
     other  Indebtedness or other  obligation as to which the Holding Company or
     any Subsidiary is in default) exceeds $2,000,000 or (B) perform, observe or
     discharge any covenant, condition or obligation in any agreement,  document
     or  instrument  evidencing,  securing or relating to such  Indebtedness  or
     other  obligation,  if the  effect  of any such  failure  of the  character
     described  in this  clause (i) is to cause,  or permit any other  Person to
     cause,  any payment in respect thereof in an aggregate amount of $2,000,000
     or more to become due and payable,  or (ii) any such  Indebtedness or other
     obligation or any  Indebtedness or other  obligation  under the Bank Credit
     Documents (or any Refinancing  Agreement) in aggregate amount of $2,000,000
     or more shall be  accelerated  or shall become due and payable by its terms
     and shall not be paid or extended;

          (i) if a final judgment for the payment of money which,  together with
     all other  outstanding final judgments for the payment of money against the
     Holding  Company  and/or any of its  Subsidiaries,  exceeds an aggregate of
     $2,000,000  shall be  rendered  by a court of record  against  the  Holding
     Company or any Subsidiary, and the Holding Company or such Subsidiary shall
     not discharge the same or provide for its discharge in accordance  with its
     terms, or procure a stay of execution  thereof within 30 days from the date
     of entry  thereof and within such period of 30 days,  or such longer period
     during which  execution of such  judgment  shall have been stayed,  move to
     vacate such judgment or appeal therefrom and cause the execution thereof to
     be stayed pending determination of such motion or during such appeal;

          (j) if any  representation  or  warranty  made by or on  behalf of the
     Holding  Company or any Subsidiary of the Holding Company in this Agreement
     or in any of the other Operative Documents or in any agreement, document or
     instrument  delivered under or pursuant to any provision  hereof or thereof
     shall prove to have been  materially  false or  incorrect on the date as of
     which made;
<PAGE>

          (k) if,  at any time,  this  Agreement  or any of the other  Operative
     Documents  shall  for any  reason  (other  than the  scheduled  termination
     thereof in accordance with its terms) expire,  fail to be in full force and
     effect or be disaffirmed,  repudiated, cancelled, terminated or declared to
     be unenforceable, null and void;

          (l) if (i)  any  Plan  shall  fail  to  satisfy  the  minimum  funding
     standards  of ERISA or the Code  for any  plan  year or part  thereof  or a
     waiver of such standards or extension of any amortization  period is sought
     or  granted  under  section  412 of the  Code,  (ii) a notice  of intent to
     terminate  any Plan shall have been or is  reasonably  expected to be filed
     with the PBGC or the PBGC shall have instituted  proceedings  under section
     4042 of ERISA to terminate or appoint a trustee to  administer  any Plan or
     the PBGC shall have notified  either Company or any ERISA  Affiliate that a
     Plan may  become a subject  of any such  proceedings,  (iii) the  aggregate
     "amount of  unfunded  benefit  liabilities"  (within the meaning of section
     4001(a)(18) of ERISA) under all Plans,  determined in accordance with Title
     IV of ERISA,  shall  exceed  $250,000,  (iv)  either  Company  or any ERISA
     Affiliate  shall  have  incurred  or is  reasonably  expected  to incur any
     liability  pursuant  to Title I or IV of ERISA or the penalty or excise tax
     provisions  of the Code  relating to  employee  benefit  plans,  (v) either
     Company or any ERISA Affiliate  withdraws from any  Multiemployer  Plan, or
     (vi) either  Company or any  Subsidiary of either  Company  establishes  or
     amends any  employee  welfare  benefit plan that  provides  post-employment
     welfare  benefits in a manner that would  increase the  liability of either
     Company or any Subsidiary of either Company thereunder;  and any such event
     or events described in clauses (i) through (vi) above,  either individually
     or together with any other such event or events,  has resulted in, or could
     reasonably be expected to result in a Material Adverse Change; or

          (m) if (i) any Person or two or more Persons  acting in concert  shall
     have acquired beneficial ownership (within the meaning of Rule 13d-3 of the
     Commission under the Exchange Act), directly or indirectly, of Voting Stock
     of the Holding Company (or other  securities  convertible  into such Voting
     Stock)  representing 30% or more of the combined voting power of all Voting
     Stock  of  the  Holding  Company;  (ii)  during  any  period  of  up  to 24
     consecutive months,  commencing before or after the date of this Agreement,
     individuals  who at the beginning of such 24-month period were directors of
     the Holding  Company shall cease for any reason to constitute a majority of
     the board of directors of the Holding  Company;  or (iii) any Person or two
     or more  Persons  acting in concert  shall have  acquired  by  contract  or
     otherwise,  or shall have entered into a contract or arrangement that, upon
     consummation,  will  result in its or their  acquisition  of,  the power to
     exercise,   directly  or  indirectly,  a  controlling  influence  over  the
     management or policies of the Holding Company;
<PAGE>

then,  in the  case  of an  Event  of  Default  of the  character  described  in
subdivisions  (a), (b), (c), (d), (h), (i), (j), (k), (l) or (m) of this section
16.1 and at the  option of the  holder or  holders  of 25% or more in  aggregate
principal  amount of the Notes at the time  outstanding  (excluding any Notes at
the time owned by either Company or any Affiliate of either Company),  exercised
by written  notice to the  Operating  Company,  the principal of all Notes shall
forthwith  become due and  payable,  together  with  interest  accrued  thereon,
without presentment,  demand,  protest or other notice of any kind, all of which
are hereby expressly waived,  and the Operating Company shall forthwith upon any
such acceleration pay to the holder or holders of all the Notes then outstanding
(i) the entire  principal  of and  interest  accrued  on the Notes,  and (ii) in
addition, to the extent permitted by applicable law, an amount equal to the Make
Whole Amount as liquidated  damages and not as a penalty;  provided that, in the
case of an Event of Default of the character  described in  subdivisions  (a) or
(b) of this section 16.1 and  irrespective of whether all of the Notes have been
declared  due and  payable by the holder or holders of 25% or more in  aggregate
principal amount of the Notes at the time  outstanding,  any holder of Notes who
or which has not  consented  to any waiver with respect to such Event of Default
may, at the option of such holder,  by written notice to the Operating  Company,
declare all Notes then held by such holder to be, and such Notes shall thereupon
become,  forthwith  due and payable,  together with  interest  accrued  thereon,
without presentment,  demand,  protest or other notice of any kind, all of which
are hereby expressly waived,  and the Operating Company shall forthwith upon any
such  acceleration  pay to such holder (i) the entire  principal of and interest
accrued  on such  Notes,  and  (ii) in  addition,  to the  extent  permitted  by
applicable  law, an amount equal to the Make Whole Amount as liquidated  damages
and not as a  penalty;  provided,  further,  that,  in the  case of an  Event of
Default of the  character  described  in  subdivisions  (e),  (f) or (g) of this
section 16.1, the principal of all Notes shall forthwith become due and payable,
together with interest  accrued thereon  (including any interest  accruing after
the commencement of any action or proceeding under the federal  bankruptcy laws,
as now or hereafter  constituted,  or any other  applicable  domestic or foreign
federal or state  bankruptcy,  insolvency  or other  similar  law, and any other
interest that would have accrued but for the  commencement  of such  proceeding,
whether or not any such  interest  is allowed  as an  enforceable  claim in such
proceeding),  without presentment,  demand, protest or other notice of any kind,
all of which are  hereby  expressly  waived,  and the  Operating  Company  shall
forthwith  upon any such  acceleration  pay to the  holder or holders of all the
Notes then  outstanding (i) the entire  principal of and interest accrued on the
Notes,  and (ii) in  addition,  to the extent  permitted by  applicable  law, an
amount  equal  to the Make  Whole  Amount  as  liquidated  damages  and not as a
penalty.

     Notwithstanding the foregoing provisions,  at any time after the occurrence
of any Event of Default and of notice thereof,  if any, by any holder or holders
of Notes and before any  judgment,  decree or order for payment of the money due
has been  obtained  by or on behalf of any holder or  holders of the Notes,  the
Required  Holders of the Notes by written notice to the Operating  Company,  may
rescind and annul such Event of Default  and/or  notice of such Event of Default
and the  consequences  thereof with respect to all of the Notes  (including  any
Notes  which were  accelerated  pursuant to the first  proviso in the  preceding

<PAGE>

paragraph  by any  holder or  holders  on  account of an Event of Default of the
character described in subdivision (a) or (b) of this section 16.1) if:

     (1) the Operating Company has paid a sum sufficient to pay

          (A) all  overdue  installments  of  interest  on all Notes at the rate
     specified in the Notes;

          (B) the  principal of (and  premium,  if any, on) any Notes which have
     become due  otherwise  than by such Event of Default or notice  thereof and
     interest thereon at the rate specified in such Notes; and

          (C) to the extent that  payment of such  interest is lawful,  interest
     upon overdue interest at the rate specified in such Notes; and

     (2) all Defaults and Events of Default,  other than the  non-payment of the
principal of Notes which have become due solely by such acceleration,  have been
cured or waived as provided in section 19.

No such  rescission  shall  affect  any  subsequent  default or impair any right
consequent thereon.

     16.2. Suits for Enforcement,  etc. Subject to the provisions of section 10,
in case any one or more of the Events of Default specified in section 16.1 shall
have occurred,  and  irrespective  of whether any Notes have become or have been
declared  immediately due and payable under section 16.1, the holder of any Note
may proceed to protect  and  enforce  its rights  either by suit in equity or by
action at law, or both. The Companies  stipulate that the remedies at law of the
holder or holders of the  Securities  in the event of any default or  threatened
default by either Company in the  performance of or compliance with any covenant
or agreement in this Agreement or any of the other  Operative  Documents are not
and will not be adequate and that, to the fullest extent  permitted by law, such
terms may be  specifically  enforced  by a decree for the  specific  performance
thereof,  whether by an  injunction  against a violation  thereof or  otherwise.
Without  limiting the generality of the foregoing (and without  derogating  from
any  provision  contained  in  this  Agreement  or any of  the  other  Operative
Documents),  upon the  occurrence  and  during  the  continuance  of an Event of
Default,  the Required  Holders of each class of Securities shall have the right
to apply for and have a receiver  appointed  for each of the Companies and their
respective  Subsidiaries,  or any one or more of them,  by a court of  competent
jurisdiction in any action taken by any such holders to enforce their respective
rights and remedies  hereunder and under the other Operative  Documents in order
to manage, protect and preserve the assets of the Companies and their respective
Subsidiaries  and continue the  operation of the business of the  Companies  and
their  respective  Subsidiaries,  or to sell or  dispose  of the  assets  of the
Companies  and their  respective  Subsidiaries,  and to collect all revenues and
profits  thereof  and apply the same to the  payment of all  expenses  and other

<PAGE>

charges of such  receivership,  including the compensation of the receiver,  and
the Companies hereby consent to such appointment without regard to the existence
of any  misfeasance  or  malfeasance  or the presence of any defenses that would
otherwise be available to such application.

     16.3. Remedies Cumulative.  No remedy conferred in this Agreement or in any
of the other Operative  Documents upon the holder of any Security is intended to
be  exclusive  of any other  remedy,  and each and every  such  remedy  shall be
cumulative  and shall be in addition to every other  remedy  given  hereunder or
thereunder  or now or  hereafter  existing  at law or in equity or by statute or
otherwise.

     16.4.  Remedies Not Waived. No course of dealing between either Company and
any of their  respective  Subsidiaries,  on the one hand,  and any holder of any
Security,  on the other hand,  and no delay by any such holder in exercising any
rights hereunder or under any of the other Operative  Documents shall operate as
a waiver of any rights of any such holder.

     16.5.  Application  of  Payments.  In case any one or more of the Events of
Default specified in section 16.1 shall have occurred, all amounts to be applied
to the prepayment or payment of any Notes,  shall be applied,  after the payment
of all  related  costs  and  expenses  incurred  by  the  holders  of the  Notes
(including, without limitation, reasonable compensation to any and all trustees,
liquidators,  receivers or similar  officials and reasonable fees,  expenses and
disbursements  of counsel) in such order of  priority  as is  determined  by the
Required Holders of the Notes.

17.  Registration,  Transfer  and  Exchange  of  Securities.  Securities  issued
hereunder shall be issued in registered  form. The Companies shall keep at their
principal executive office (which is now located at the address set forth at the
beginning  of this  Agreement),  registers  in which they shall  provide for the
registration and transfer of the Securities. The name and address of each holder
of the Securities  shall be registered in such  registers.  The Companies  shall
give to any  institutional  holder of any  Security  promptly  (but in any event
within 10 days) following request  therefor,  a complete and correct copy of the
names and addresses of all  registered  holders of the Securities and the amount
and kind of Securities held by each.  Whenever any Security or Securities  shall
be surrendered for transfer or exchange,  the applicable  Company at its expense
will execute and deliver in exchange  therefor a new Security or Securities  (in
such  denominations  and registered in such name or names as may be requested by
the holder of the  surrendered  Security or  Securities),  in the same aggregate
unpaid  principal  amount (in the case of the Notes) or exercisable for the same
aggregate  number  of  Shares  (in the  case  of any  Warrants)  or in the  same
aggregate  number  of  Shares  (in the  case  of any  Underlying  Security),  as
applicable, as that of the Security or Securities so surrendered.  The Companies
may treat the Person in whose name any  Security is  registered  as the owner of
such Security for all purposes.  
<PAGE>

18.  Replacement  of  Securities.  Upon receipt by the  Companies of  reasonably
satisfactory evidence of the loss, theft,  destruction or mutilation of any Note
or  Warrant  and (in the  case of  loss,  theft or  destruction)  of  reasonably
satisfactory  indemnity,  and (in the case of mutilation) upon surrender of such
Note or Warrant,  the applicable Company at its expense will execute and deliver
in lieu of such Note or Warrant a new Note or Warrant of like tenor and,  in the
case of any new Note,  dated so as not to result in any loss of  interest.  Your
unsecured  agreement  to  indemnify  and/or  affidavit  and  that  of any  other
institutional holder shall constitute satisfactory indemnity and/or satisfactory
evidence of loss, theft or destruction for the purpose of this section 18.

19.   Amendment and Waiver.

          (a)  Any  term of  this  Agreement  and,  unless  explicitly  provided
     otherwise  therein,  of any of the other Operative  Documents may, with the
     consent of the  Companies,  be  amended,  or  compliance  therewith  may be
     waived,  in  writing  only,  by the  Required  Holders  of  each  class  of
     Securities entitled to the benefits of such term, provided that (i) without
     the consent of the holders of all of the Notes at the time outstanding,  no
     such amendment or waiver shall (A) change the amount of the principal of or
     any rate of interest on or the amount of any premium  payable  with respect
     to any of the Notes or change the  payment  terms of any of the Notes,  or,
     except as provided in the Notes, subordinate the obligation of the Obligors
     to pay any amount due on the Notes to any other  obligation,  or (B) change
     the percentage of holders of Notes required to approve any such  amendment,
     effectuate any such waiver or accelerate payment of the Notes; (ii) without
     the consent of the holders of all of the Warrants and Underlying Securities
     at the time  outstanding,  no such amendment or waiver shall (A) modify any
     of the provisions of section 11 or section 12, or (B) change the percentage
     of holders of the Warrants and  Underlying  Securities  required to approve
     any such  amendment or effect any such waiver;  and (iii) no such amendment
     or waiver shall extend to or affect any obligation not expressly amended or
     waived or impair any right consequent thereon. Executed or true and correct
     copies  of any  amendment,  waiver or  consent  effected  pursuant  to this
     section 19 shall be delivered by the Companies to each holder of Securities
     forthwith  (but in any event not later than five Business  Days)  following
     the effective date thereof.

          (b) The  Companies  will  not,  directly  or  indirectly,  request  or
     negotiate for, or offer or pay any remuneration or grant any security as an
     inducement  for, any proposed  amendment or waiver of any of the provisions
     of this  Agreement  or any of the other  Operative  Documents  unless  each
     holder of the Securities (irrespective of the kind and amount of Securities
     then owned by it) shall be informed  thereof by the Companies  and, if such
     holder is  entitled  to the  benefit of any such  provision  proposed to be
     amended or waived,  shall be afforded the  opportunity of  considering  the
     same,  shall be supplied by the Companies  with  sufficient  information to

<PAGE>

     enable it to make an informed  decision  with respect  thereto and shall be
     offered and paid such  remuneration  and granted such  security on the same
     terms.

          (c) In determining  whether the requisite  holders of Securities  have
     given any  authorization,  consent  or waiver  under this  section  19, any
     Securities  owned by either Company or any of their  respective  Affiliates
     shall be disregarded and deemed not to be outstanding.

20. Method of Payment of Securities.  Irrespective of any provision hereof or of
the  other  Operative  Documents  to the  contrary,  so long as you or any other
institutional  holder  shall  hold any  Security,  the  Companies  will make all
payments  on such  Security  to you or such  other  institutional  holder by the
method and at the  address  for such  purpose  specified  in Schedule I attached
hereto  or by  such  other  method  or at  such  other  address  as you or  such
institutional holder may designate in writing (given as provided in section 23),
without requiring any presentation or surrender of such Security, except that if
any Security shall be paid,  prepaid and/or  repurchased in full,  such Security
shall be surrendered to the applicable Company promptly following such payment, 
prepayment or repurchase and cancelled.


21. Expenses;  Indemnity. Whether or not the transactions contemplated by any of
the  Operative  Documents  shall be  consummated,  the  Companies,  jointly  and
severally,  will pay or cause to be paid (or reimbursed, as the case may be) and
will  defend,  indemnify  and hold  you (and  each  other  holder  of any of the
Securities)  and each of your (and such  other  holder's)  directors,  officers,
employees,  agents, advisors and Affiliates (each, an "Indemnitee") harmless (on
an after tax  basis) in  respect  of all  costs,  losses,  expenses  (including,
without  limitation,  the reasonable fees, costs,  expenses and disbursements of
counsel) and damages (collectively, "Indemnified Costs") incurred by or asserted
against any Indemnitee in connection with the negotiation,  execution, delivery,
performance  and/or  enforcement of this Agreement or any of the other Operative
Documents   (including,   without   limitation,   so-called  work-  outs  and/or
restructurings   and  all  amendments,   waivers  and  consents   hereunder  and
thereunder, whether or not effected) and/or the consummation of the transactions
contemplated  hereby and thereby or which may otherwise be related in any way to
this Agreement or any other  Operative  Documents or such  transactions  or such
Indemnitee's   relationship  to  either  Company  or  any  of  their  respective
Affiliates or any of their respective properties and assets, including,  without
limitation, any and all Indemnified Costs related in any way to the requirements
of any Environmental Laws (as the same may be amended,  modified or supplemented
from  time to  time) or to any  environmental  investigation,  assessment,  site
monitoring,  containment, clean up, remediation, removal, restoration, reporting
and  sampling,  whether or not  consented  to, or  requested or approved by, any
Indemnitee, and whether or not such Indemnified Cost is attributable to an event
or condition  originating from any properties or assets of either Company or any
of their respective Subsidiaries or any other properties previously or hereafter
owned, leased, occupied or operated by either Company or any of their respective

<PAGE>

Subsidiaries.  Notwithstanding  the  foregoing,  the  Companies  shall  have any
obligation  to  an  Indemnitee  under  this  section  21  with  respect  to  any
Indemnified   Cost  which  is  finally   determined  by  a  court  of  competent
jurisdiction  to have  arisen  solely and  directly  as a result of the  willful
misconduct or bad faith of such Indemnitee.

22.  Taxes.  The  Companies  jointly and  severally  will pay all taxes and fees
(including interest and penalties),  including, without limitation, all issuance
and documentary stamp and similar taxes,  which may be payable in respect of the
execution  and  delivery  of this  Agreement  and  each of the  other  Operative
Documents.

23.  Communications.   All  communications   provided  for  herein  and,  unless
explicitly  provided otherwise therein,  in any of the other Operative Documents
shall be in writing and sent (a) by telecopy if the sender on the same day sends
a  confirming  copy of such  communication  by a recognized  overnight  delivery
service  (charges  prepaid),  (b) by a  recognized  overnight  delivery  service
(charges prepaid), or (c) by messenger.  Any such communication must be sent (i)
if to either Company (or any Subsidiary of either Company),  to such Company (or
such Subsidiary) at:

                  PSC Inc.
                  675 Basket Road
                  Webster, New York   14580
                  Attention: William J. Woodard
                  Telecopy No.:  (716) 265-6409

                  with a copy (which shall not constitute notice) to:

                  Boylan, Brown, Code, Fowler, Vigdor & Wilson, LLP
                  2400 Chase Square
                  Rochester, New York  14604
                  Attention:  Martin S. Weingarten, Esq.
                  Telecopy No.:  (716) 232-3528

or at such other address (or telecopy  number) as may be furnished in writing by
the Companies to each holder of any Security and (ii) if to you, at your address
for such  purpose  set forth in Schedule I attached  hereto,  with a copy (which
shall not constitute notice) to:

                  Choate, Hall & Stewart
                  Exchange Place
                  53 State Street
                  Boston, Massachusetts  02109
                  Attention:  Frank B. Porter, Jr., Esq.
                  Telecopy No.:  (617) 248-4000

<PAGE>

and if to any other holder of any Security,  at the address of such holder as it
appears on the applicable register maintained pursuant to section 17, or at such
other  address as may be  furnished  in writing by you or by any other holder to
the Companies.  Communications  under this section 23 shall be deemed given only
when actually received.

24. Survival of Agreements, Representations and Warranties, etc. All agreements,
representations  and  warranties  contained  herein  and in the other  Operative
Documents  shall be deemed to have been relied upon by you and shall survive the
execution  and  delivery  of this  Agreement  and  each of the  other  Operative
Documents,  the issue,  sale and delivery of the Securities and payment therefor
and any disposition of the Securities by you,  whether or not any  investigation
at any time is made by you or on your behalf.  All  indemnification  provisions,
including,  without  limitation,  those  contained in sections  11.5, 21 and 22,
shall survive the date upon which none of the  Securities  shall be  outstanding
and the termination of this Agreement and each of the other Operative Documents.

25. Successors and Assigns;  Rights of Other Holders. This Agreement and, unless
explicitly  provided  otherwise therein,  each of the other Operative  Documents
shall bind and inure to the benefit of and be  enforceable  by the Companies and
you,  successors  to each  Company  and your  successors  and  assigns,  and, in
addition,  shall inure to the benefit of and be  enforceable by each holder from
time to time of any Securities  who, upon  acceptance  thereof,  shall,  without
further action,  be entitled to enforce the applicable  provisions and enjoy the
applicable  benefits  hereof and thereof.  The  Companies  may not assign any of
their  respective  rights  or  obligations  hereunder  or under any of the other
Operative  Documents without the written consent of the Required Holders of each
class of Securities then outstanding.

26.   Purchase for Investment; ERISA.

          (a) You  represent and warrant (i) that you have been  furnished  with
     all information  that you have requested for the purpose of evaluating your
     proposed  acquisition of the Securities to be issued to you pursuant hereto
     and  (ii) that  you will acquire such  Securities  for your own account for
     investment  and not for  distribution  in any  manner  that  would  violate
     applicable securities laws, but without prejudice to your rights to dispose
     of such Securities or a portion thereof to a transferee or transferees,  in
     accordance  with such laws if at some future time you deem it  advisable to
     do so. The  acquisition  of such  Securities  by you at the  Closing  shall
     constitute  your   confirmation  of  the  foregoing   representations   and
     warranties.  You understand that such Securities are being sold to you in a
     transaction  which is  exempt  from the  registration  requirements  of the
     Securities  Act, and that,  in making the  representations  and  warranties
     contained  in  section  5.16,  the  Companies  are  relying,  to the extent
     applicable, upon your representations and warranties contained herein.

<PAGE>

          (b) You represent that at least one of the following  statements is an
     accurate  representation as to each source of funds (a "Source") to be used
     by you to pay the purchase  price of the  Securities to be purchased by you
     hereunder:

               (i) the  Source is an  "insurance  company  general  account"  as
          defined in Section V(e) of Prohibited  Transaction  Exemption  ("PTE")
          95- 60 (issued July 12, 1995) and, except as you have disclosed to the
          Companies  in writing  pursuant  to this  section  (i),  the amount of
          reserves and liabilities for the general account  contract(s)  held by
          or on behalf of any employee benefit plan or group of plans maintained
          by the same employer or employee organization do not exceed 10% of the
          total reserves and  liabilities of the general  account  (exclusive of
          separate  account  liabilities)  plus surplus as set forth in the NAIC
          Annual Statement filed with the state of domicile of the insurer; or

               (ii) the Source is a separate  account  of an  insurance  company
          maintained  by you in which an employee  benefit  plan (or its related
          trust) has an interest, which separate account is maintained solely in
          connection  with your fixed  contractual  obligations  under which the
          amounts payable,  or credited,  to such plan and to any participant or
          beneficiary of such plan (including any annuitant) are not affected in
          any manner by the investment performance of the separate account; or

               (iii) the  Source  is  either  (A) an  insurance  company  pooled
          separate  account,  within the meaning of PTE 90-1 (issued January 29,
          1990), or (B) a bank collective investment fund, within the meaning of
          the PTE 91-38 (issued July 12, 1991) and, except as you have disclosed
          to the  Companies  in  writing  pursuant  to this  section  (iii),  no
          employee  benefit  plan or  group  of  plans  maintained  by the  same
          employer or employee  organization  beneficially owns more than 10% of
          all assets  allocated to such pooled  separate  account or  collective
          investment fund; or

               (iv)  the  Source  constitutes  assets  of an  "investment  fund"
          (within  the  meaning  of Part V of the QPAM  Exemption)  managed by a
          "qualified  professional  asset manager" or "QPAM" (within the meaning
          of Part V of the QPAM  Exemption),  no employee  benefit plan's assets
          that are included in such  investment  fund,  when  combined  with the
          assets of all other employee  benefit plans  established or maintained
          by the same employer or by an affiliate (within the meaning of Section
          V(c)(1)  of the  QPAM  Exemption)  of  such  employer  or by the  same
          employee  organization  and  managed by such  QPAM,  exceed 20% of the
          total client assets  managed by such QPAM, the conditions of Part I(c)
          and (g) of the QPAM  Exemption are  satisfied,  neither the QPAM nor a
          person

<PAGE>

          controlling  or  controlled by the QPAM  (applying  the  definition of
          "control"  in Section  V(e) of the QPAM  Exemption)  owns a 5% or more
          interest  in either  Company  and  (A) the  identity  of such QPAM and
          (B) the names of all employee  benefit plans whose assets are included
          in such  investment  fund  have been  disclosed  to the  Companies  in
          writing  pursuant  to  this  section  (iv);  or 

               (v) the Source is a governmental plan; or

               (vi) the  Source  is one or more  employee  benefit  plans,  or a
          separate  account  or trust  fund  comprised  of one or more  employee
          benefit plans,  each of which has been  identified to the Companies in
          writing pursuant to this section (vi); or

               (vii) the Source does not include assets of any employee  benefit
          plan, other than a plan exempt from the coverage of ERISA.

     As  used  in  this  section  26(b),  the  terms  "employee  benefit  plan",
     "governmental  plan", "party in interest" and "separate account" shall have
     the respective  meanings  assigned to such terms in Section 3 of ERISA, and
     the term "QPAM Exemption" means PTE 84-14 (issued March 13, 1984).

27.  Governing  Law;  Jurisdiction;  Waiver of Jury Trial.  This  Agreement and,
unless  explicitly  provided  otherwise  therein,  each of the  other  Operative
Documents,  including  the  validity  hereof  and  thereof  and the  rights  and
obligations  of the parties  hereunder and  thereunder,  and all  amendments and
supplements  hereof and  thereof  and all waivers  and  consents  hereunder  and
thereunder,  shall be construed in accordance  with and governed by the domestic
substantive laws of the State of New York without giving effect to any choice of
law or conflicts of law  provision or rule that would cause the  application  of
the domestic  substantive laws of any other  jurisdiction.  Each Company, to the
extent that it may lawfully do so, hereby consents to service of process, and to
be sued, in the State of New York and in The Commonwealth of  Massachusetts  and
consents to the  jurisdiction  of the courts of the State of New York and of The
Commonwealth of  Massachusetts  and of the United States District Courts for the
Southern District of New York and for the District of Massachusetts,  as well as
to the  jurisdiction  of all  courts to which an appeal  may be taken  from such
courts,  for the purpose of any suit, action or other proceeding  arising out of
any  of  its  obligations  hereunder  or  thereunder  or  with  respect  to  the
transactions  contemplated  hereby or thereby,  and expressly waives any and all
objections  it may have as to venue in any such  courts.  Each  Company  further
agrees that a summons and complaint commencing an action or proceeding in any of
such courts shall be properly served and shall confer  personal  jurisdiction if
served personally or by certified mail to it at its address set forth in section
23 or as  otherwise  provided  under  the  laws of the  State of New York or The
Commonwealth  of  Massachusetts,   as  the  case  may  be.  Notwithstanding  the
foregoing,  each Company agrees that nothing  contained in this section 27 shall

<PAGE>

preclude the  institution  of any such suit,  action or other  proceeding in any
jurisdiction   other  than  the  State  of  New  York  or  The  Commonwealth  of
Massachusetts.  EACH COMPANY  IRREVOCABLY WAIVES ALL RIGHT TO A TRIAL BY JURY IN
ANY SUIT,  ACTION OR OTHER  PROCEEDING  INSTITUTED BY OR AGAINST SUCH COMPANY IN
RESPECT  OF  ITS  OBLIGATIONS   HEREUNDER  OR  THEREUNDER  OR  THE  TRANSACTIONS
CONTEMPLATED HEREBY OR THEREBY.

28. Rule 144A. Each Company will take, or will cause to be taken, such action as
any holder of Securities may reasonably  request from time to time to facilitate
any  sale  or  disposition  by  any  such  holder  of  any  Securities   without
registration  under the  Securities Act and/or any  applicable  securities  laws
within the  limitation  of the  exemptions  provided  by any rule or  regulation
thereunder, including, without limitation, Rule 144A under the Securities Act.

29.  Miscellaneous.  The  headings  in this  Agreement  and in each of the other
Operative  Documents  are for purposes of reference  only and shall not limit or
otherwise  affect the meaning hereof or thereof.  This Agreement  (together with
the other Operative  Documents)  embodies the entire agreement and understanding
among  you  and  the  Companies  and   supersedes   all  prior   agreements  and
understandings  relating to the subject matter hereof.  Each covenant  contained
herein and in each of the other Operative  Documents shall be construed  (absent
an  express  provision  to the  contrary)  as being  independent  of each  other
covenant contained herein and therein,  so that compliance with any one covenant
shall  not  (absent  such an  express  contrary  provision)  be deemed to excuse
compliance with any other covenant. If any provision in this Agreement or in any
of the other  Operative  Documents  refers to any action taken or to be taken by
any Person, or which such Person is prohibited from taking, such provision shall
be  applicable,  whether  such action is taken  directly or  indirectly  by such
Person,  whether  or not  expressly  specified  in such  provision.  In case any
provision in this  Agreement or any of the other  Operative  Documents  shall be
invalid, illegal or unenforceable,  the validity, legality and enforceability of
the remaining  provisions shall not in any way be affected or impaired  thereby.
This Agreement and, unless explicitly  provided otherwise  therein,  each of the
other Operative Documents,  may be executed in any number of counterparts and by
the parties hereto or thereto, as the case may be, on separate  counterparts but
all such counterparts shall together constitute but one and the same instrument.


               [The remainder of this page is intentionally left blank.]
<PAGE>

     If you are in  agreement  with  the  foregoing,  please  sign  the  form of
agreement on the accompanying counterparts of this letter, whereupon this letter
shall become a binding agreement under seal among you and the Companies. Please
then return one of such counterparts to the Companies.

                                         Very truly yours,

                                         PSC INC.



                                         By:  _____________________________
                                                                  (Title)

                                         SPECTRASCAN, INC.



                                         By:  _____________________________
                                                                  (Title)

The foregoing Agreement is hereby
agreed to as of the date thereof.

[THE FOLLOWING ARE THE SIGNATURE
BLOCKS FOR EACH OF THE PURCHASERS
WHICH WILL APPEAR IN THE APPLICABLE
SECURITIES PURCHASE AGREEMENT
BETWEEN THE COMPANIES AND EACH
SUCH PURCHASER.]

JOHN HANCOCK MUTUAL LIFE
   INSURANCE COMPANY



By: ______________________________
                                            (Title)


JOHN HANCOCK VARIABLE LIFE
   INSURANCE COMPANY



By: ______________________________
                                            (Title)

<PAGE>

THE LINCOLN NATIONAL LIFE
   INSURANCE COMPANY



By: ______________________________
                                            (Title)


LINCOLN NATIONAL INCOME FUND, INC.



By: ______________________________
                                            (Title)


SECURITY-CONNECTICUT LIFE
   INSURANCE COMPANY

By:  Lincoln Investment Management, Inc.
     Its Attorney-In-Fact



     By: __________________________
                                            (Title)


SECURITY-CONNECTICUT CORPORATION

By:  Lincoln Investment Management, Inc.
     Its Attorney-In-Fact



     By: __________________________
                                            (Title)






<PAGE>

THE EQUITABLE LIFE ASSURANCE
   SOCIETY OF THE UNITED STATES



By: ______________________________
                                            (Title)





                                                                EXHIBIT 10.2
                                                                EXECUTION COPY

                                 $100,000,000

                               CREDIT AGREEMENT

                           Dated as of July 12, 1996

                                     Among

                             PSC ACQUISITION, INC.

                                  as Borrower

                                     and

                                   PSC INC.

                                 as Guarantor

                                      and

                              THE INITIAL LENDERS
                                  NAMED HEREIN

                              as Initial Lenders
                                  FLEET BANK
                           as Initial Issuing Bank,
                                      and
                                  FLEET BANK
                            as Administrative Agent


<PAGE>



                       T A B L E   O F   C O N T E N T S


Section                                                                   Page

                                   ARTICLE I

                       DEFINITIONS AND ACCOUNTING TERMS

      1.01.  Certain Defined Terms.........................................  2
      1.02.  Computation of Time Periods................................... 27
      1.03.  Accounting Terms.............................................. 27

                                  ARTICLE II

                       AMOUNTS AND TERMS OF THE ADVANCES
                           AND THE LETTERS OF CREDIT

      2.01.  The Advances.................................................. 27
      2.02.  Making the Advances........................................... 29
      2.03.  Issuance of and Drawings and
               Reimbursement Under Letters of Credit .....................  31
      2.04.  Repayment of Advances......................................... 33
      2.05.  Termination or Reduction of the Commitments................... 36
      2.06.  Prepayments................................................... 36
      2.07.  Interest...................................................... 39

<PAGE>



Section                                                                   Page


      2.08.  Fees.......................................................... 40
      2.09.  Conversion of Advances........................................ 40
      2.10.  Increased Costs, Etc.......................................... 41
      2.11.  Payments and Computations..................................... 43
      2.12.  Taxes......................................................... 44
      2.13.  Sharing of Payments, Etc...................................... 46
      2.14.  Use of Proceeds............................................... 47
      2.15.  Defaulting Lenders............................................ 47

                                  ARTICLE III

                             CONDITIONS OF LENDING

      3.01.  Conditions Precedent to Initial Extension of Credit........... 49
      3.02.  Conditions Precedent to Each Borrowing and Issuance........... 57
      3.03.  Determinations Under Section 3.01............................. 58

                                  ARTICLE IV

                        REPRESENTATIONS AND WARRANTIES

      4.01.  Representations and Warranties of PSC and the Borrower........ 58

<PAGE>



Section                                                                   Page


                                   ARTICLE V

                       COVENANTS OF PSC AND THE BORROWER
      5.01.  Affirmative Covenants......................................... 65
      5.02.  Negative Covenants............................................ 70
      5.03.  Reporting Requirements........................................ 77
      5.04.  Financial Covenants........................................... 81

                                  ARTICLE VI

                               EVENTS OF DEFAULT

      6.01.  Events of Default............................................. 84
      6.02.  Actions in Respect of the Letters of Credit upon Default...... 88

                                  ARTICLE VII

                           The Administrative Agent

      7.01.  Authorization and Action...................................... 88
      7.02.  Administrative Agent's Reliance, Etc.......................... 88
      7.03.  Fleet and Affiliates.......................................... 89
      7.04.  Lender Party Credit Decision.................................. 89


<PAGE>

Section                                                                   Page


      7.05.  Indemnification............................................... 89
      7.06.  Successor Administrative Agents............................... 91

                                 ARTICLE VIII

                                 MISCELLANEOUS

      8.01.  Amendments, Etc............................................... 92
      8.02.  Notices, Etc.................................................. 93
      8.03.  No Waiver; Remedies........................................... 93
      8.04.  Costs and Expenses............................................ 93
      8.05.  Right of Set-off.............................................. 95
      8.06.  Binding Effect................................................ 95
      8.07.  Assignments and Participations................................ 95
      8.08.  Execution in Counterparts..................................... 98
      8.09.  No Liability of the Issuing Bank.............................. 98
      8.10.  Confidentiality............................................... 99
      8.11.  Jurisdiction, Etc............................................. 99
      8.12.  Governing Law................................................. 99
      8.13.  Waiver of Jury Trial.......................................... 99

                                  ARTICLE IX

<PAGE>


Section                                                                   Page


                                 PSC GUARANTY

      9.01.  PSC Guaranty..................................................100
      9.02.  Guaranty Absolute.............................................100
      9.03.  Waivers and Acknowledgments...................................101
      9.04.  Subrogation...................................................102
      9.05.  Continuing Guarantee; Assignments.............................102


<PAGE>

SCHEDULES

Schedule I ...................  Commitments and Applicable Lending Offices
Schedule II ..................  Foreign Subsidiaries
Schedule III .................  Pro Forma EBITDA
Schedule 3.01(g) .............  Disclosed Litigation
Schedule 3.01(k) .............  Hedge Agreements
Schedule 3.01(l)(vi) .........  States in which Loan Parties are
                                   Qualified to do Business
Schedule 3.01(l)(xi) .........  Mortgages
Schedule 3.01 (l)(xvii) ......  Environmental Assessment Reports
Schedule 4.01(b) .............  Subsidiaries
Schedule 4.01(d) .............  Required Authorizations and Approvals
Schedule 4.01(n) .............  Plans, Multiemployer Plans and Welfare Plans
Schedule 4.01(w) .............  Open Tax Years
Schedule 4.01(dd) ............  Existing Debt (other than Surviving Debt)
Schedule 4.01(ee) ............  Surviving Debt
Schedule 4.01(ff) ............  Owned Real Estate
Schedule 4.01(gg) ............  Leased Real Estate
Schedule 4.01(hh) ............  Material Contracts
Schedule 4.01(ii) ............  Investments
Schedule 4.01(jj) ............  Intellectual Property
Schedule 5.02(a)(iii) ........  Liens
<PAGE>


EXHIBITS

Exhibit A-1 ..................  Form of Term A Note
Exhibit A-2 ..................  Form of Term B Note
Exhibit A-3 ..................  Form of Working Capital Note
Exhibit B ....................  Form of Notice of Borrowing
Exhibit C ....................  Form of Assignment and Acceptance
Exhibit D ....................  Form of Security Agreement
Exhibit E ....................  Form of Intellectual Property Security Agreement
Exhibit F-1 ..................  Form of New York Mortgage
Exhibit F-2 ..................  Form of Oregon Deed of Trust
Exhibit G ....................  Form of Subsidiary Guaranty
Exhibit H ....................  Form of Assumption Agreement
Exhibit I ....................  Form of Solvency Certificate
Exhibit J ....................  Form of Opinion of Borrower's Counsel
Exhibit K ....................  Form of Opinion of Local Counsel Opinion
Exhibit L ....................  Form of Opinion of Intellectual Property Counsel
Exhibit M ....................  Form of Borrowing Base Certificate
<PAGE>




                               CREDIT AGREEMENT


     CREDIT AGREEMENT dated as of July 12, 1996 among PSC  Acquisition,  Inc., a
Delaware  corporation  ("PSC  Acquisition"  and,  together  with  the  Surviving
Corporation  (as  hereinafter  defined)  following  the Merger  (as  hereinafter
defined),  the  "Borrower"),  PSC  Inc.,  a New  York  corporation  ("PSC"),  as
Guarantor,  the banks,  financial  institutions and other institutional  lenders
listed on the  signature  pages  hereof as the  Initial  Lenders  (the  "Initial
Lenders"),  the Initial  Issuing Bank (as  hereinafter  defined)  (the  "Initial
Issuing  Bank"),  the  Swing  Line Bank (as  hereinafter  defined),  Fleet  Bank
("Fleet"),  as  administrative  agent  (together  with any  successor  appointed
pursuant to Article VII,  the "Administrative Agent") for the Lender Parties (as
hereinafter defined).

PRELIMINARY STATEMENTS:

     (1) PSC  Acquisition  was  organized by PSC to acquire  certain  assets and
businesses of  Spectra-Physics,  Inc., a Delaware  corporation  (the "Company"),
Spectra-Physics  Scanning Systems, Inc., a Delaware corporation ("Scanning") and
T.X.C.O.M., S.A., a French corporation ("TxCom") and other related assets.

     (2) Pursuant to the Asset and Stock Purchase  Agreement dated May 20,  1996
(as amended, supplemented or otherwise modified in accordance with its terms, to
the extent  permitted in  accordance  with the Loan  Documents  (as  hereinafter
defined), the "Purchase Agreement") by and among PSC, Spectra-Physics  Holdings,
S.A., a French  corporation  ("SP Holdings") and the Company,  PSC has agreed to
purchase,   both  directly  and  through  PSC   Acquisition   and  other  direct
wholly-owned Subsidiaries (as hereinafter defined) certain assets and businesses
of  the  Company.  Simultaneously  with  such  purchase,  PSC  Acquisition  will
consummate a merger (the "Merger") with Scanning,  in which Scanning will be the
surviving  corporation (the "Surviving  Corporation").  Upon the consummation of
the  Merger,  the  name  of  the  Surviving   Corporation  will  be  changed  to
SpectraScan, Inc.

     (3) The Borrower has requested that the Lender Parties lend to the Borrower
up to $92,500,000 of the total  Commitments (as  hereinafter  defined) to pay to
the Company the cash  consideration for the assets and businesses of the Company
that  PSC  and  its  direct  wholly-owned   Subsidiaries  are  purchasing,   pay
transaction  fees and expenses,  and that, from time to time, the Lender Parties
lend the remaining  balance of the total  Commitments  to the Borrower and issue
Letters of Credit for the benefit of the Borrower to provide working capital for
the Borrower and its  Subsidiaries.  The Lender  Parties  have  indicated  their
willingness  to agree to lend such amounts on the terms and  conditions  of this
Agreement.

     NOW,  THEREFORE,  in  consideration  of the  premises  and  of  the  mutual
covenants and agreements  contained  herein,  the parties hereto hereby agree as
follows:

<PAGE>

                                    Article I

                        Definitions And Accounting Terms

     SECTION  1.01.  Certain  Defined  Terms.  As used in  this  Agreement,  the
following  terms shall have the following  meanings (such meanings to be equally
applicable to both the singular and plural forms of the terms defined):

          "Acquired  Assets and Liabilities"  means the Scanning Shares,  the US
     Assets,  the TxCom Assets and Liabilities and the International  Assets and
     Liabilities (each as defined in the Purchase Agreement).

          "Acquisition"  means the  transactions  contemplated  by the  Purchase
     Agreement.

          "Administrative  Agent" has the  meaning  specified  in the recital of
     parties to this Agreement.

          "Administrative   Agent's   Account"   means   the   account   of  the
     Administrative  Agent maintained by the Administrative  Agent with Fleet at
     its office at One East  Avenue,  Rochester,  New York  14638,  Account  No.
     1983580, Attention: Jeffrey Kenefick.

          "Advance" means a Term A Advance,  a Term B Advance, a Working Capital
     Advance, a Swing Line Advance or a Letter of Credit Advance.

          "Affiliate" means, as to any Person,  any other Person that,  directly
     or indirectly,  controls,  is controlled by or is under common control with
     such Person or is a director  or officer of such  Person.  For  purposes of
     this  definition,  the term "control"  (including the terms  "controlling,"
     "controlled  by" and "under  common  control  with") of a Person  means the
     possession,  direct  or  indirect,  of the  power to vote 5% or more of the
     Voting  Stock of such  Person or to direct  or cause the  direction  of the
     management  and policies of such Person,  whether  through the ownership of
     Voting Stock, by contract or otherwise.

          "Applicable  Lending Office" means, with respect to each Lender Party,
     such Lender  Party's  Domestic  Lending  Office in the case of a Prime Rate
     Advance and such Lender Party's  Eurodollar Lending Office in the case of a
     Eurodollar Rate Advance.

          "Applicable  Margin"  means at any time and from time to time (a) with
     respect to the Term B Facility  1.75% per annum for Prime Rate Advances and
     3.25% per annum for  Eurodollar  Rate  Advances and (b) with respect to the
     Term A Facility  and the  Working  Capital  Facility,  (i) prior to July 1,
     1997,  1.25%  per annum for  Prime  Rate  Advances  and 2.75% per annum for
     Eurodollar Rate Advances and (ii) from and after July 1, 1997, a percentage
     per annum  determined  by  reference  to the Total  Debt Ratio as set forth
     below:
<PAGE>


                             Term A Facility and
                               Working Capital       Term A Facility and Working
        Total Debt                 Facility               Capital Facility
          Ratio              Prime Rate Advances      Eurodollar Rate Advances

Level I:
 a ratio greater than               1.25%                       2.75%
3.5:1

Level II:
a ratio of
3.5:1 or less
but at least 3.0:1                  1.00%                       2.50%

Level III:
a ratio of less than
3.0:1 but at least 2.5:1             .75%                       2.25%

Level IV:
a ratio of less than
2.5:1                                .50%                       2.00%


     The  Applicable  Margin for each Prime Rate Advance  shall be determined by
     reference  to the  ratio in  effect  from  time to time and the  Applicable
     Margin for each Eurodollar Rate Advance shall be determined by reference to
     the  ratio in effect on the  first  day of each  Interest  Period  for such
     Advance;  provided,  however,  that (A) no change in the Applicable  Margin
     shall be effective  until three  Business  Days after the date on which the
     Administrative    Agent   receives   financial   statements   pursuant   to
     Section 5.03(c)  or (d) and a certificate of the chief financial officer of
     PSC  demonstrating  such  ratio and  (B) if  PSC has not  submitted  to the
     Administrative  Agent  the  information  described  in  clause (A)  of this
     proviso as and when required under Section  5.03(c) or (d), as the case may
     be,  the  Applicable  Margin  shall  be at  Level  I for so  long  as  such
     information has not been received by the Administrative Agent.

          "Appropriate  Lender" means,  at any time,  with respect to (a) any of
     the Term A Facility, the Term B Facility or the Working Capital Facility, a
     Lender that has a Commitment  with  respect to such  Facility at such time,
     (b) the  Letter of Credit  Facility,  (i) the  Issuing Bank and (ii) if the
     other Working Capital Lenders have made Letter of Credit Advances  pursuant
     to  Section 2.03(c)  that are  outstanding  at such  time,  each such other
     Working Capital Lender and (c) the Swing Line Facility,  (i) the Swing Line
     Bank and (ii) if the other  Working  Capital  Lenders  have made Swing Line
     Advances  pursuant to Section  2.02(b) that are  outstanding  at such time,
     each such other Working Capital Lender.

          "Assignment and Acceptance" means an assignment and acceptance entered
     into by a Lender  Party  and an  Eligible  Assignee,  and  accepted  by the
     Administrative  Agent, in accordance with Section 8.07 and in substantially
     the form of Exhibit C hereto.

<PAGE>


          "Assumption   Agreement"   has  the  meaning   specified   in  Section
     3.01(l)(xiv).

          "Available  Amount" of any Letter of Credit  means,  at any time,  the
     maximum  amount  available  to be drawn under such Letter of Credit at such
     time (assuming compliance at such time with all conditions to drawing).

          "Bank  Hedge  Agreement"  means  any  interest  rate  Hedge  Agreement
     required or permitted  under  Article V that is entered into by and between
     the Borrower and any Lender Party.

          "Bond  Trustee" means The Oregon Bank in its capacity as trustee under
     the IRB Documents.

          "Borrower" has the meaning specified in the recital of parties to this
     Agreement.

          "Borrower's  Account" means the account of the Borrower  maintained by
     the Borrower with M&T at its office at 44 Exchange Street,  Rochester,  New
     York 14614, Account No. 15976632.

          "Borrowing" means, a Term A Borrowing,  a Term B Borrowing,  a Working
     Capital Borrowing or a Swing Line Borrowing.

          "Borrowing  Base" on any date means the sum of (x) 80% of the value of
     the Eligible Receivables arising out of sales to account debtors within the
     United States and (y) 60% of the value of the Eligible  Receivables arising
     out of sales to account debtors outside the United States,  in each case as
     set forth in the most recent  Borrowing Base  Certificate  delivered to the
     Administrative Agent pursuant to the terms of this Agreement on or prior to
     such date.

          "Borrowing Base Certificate"  means a certificate in substantially the
     form of Exhibit M hereto,  duly certified by the chief financial officer of
     the Borrower.

          "Borrowing Base Deficiency" means, at any time, the failure of (a) the
     Borrowing  Base at such  time to equal or  exceed  (b) the  sum of  (i) the
     aggregate  principal amount of the Working Capital Advances,  the Letter of
     Credit  Advances and the Swing Line Advances  outstanding at such time plus
     (ii) the aggregate Available Amount under all Letters of Credit outstanding
     at such time.

          "Business Day" means a day of the year on which banks are not required
     or authorized by law to close in Rochester, New York and, if the applicable
     Business Day relates to any Eurodollar Rate Advances, on which dealings are
     carried on in the London interbank market.

          "Capital  Expenditures"  means, for any Person for any period, the sum
     of all expenditures made, directly or indirectly,  by such Person or any of

<PAGE>

     its  Subsidiaries  during such period for  equipment,  fixed  assets,  real
     property or improvements,  or for replacements or substitutions therefor or
     additions  thereto,  that have been or should be, in accordance  with GAAP,
     reflected as additions  to property,  plant or equipment on a  Consolidated
     balance sheet of such Person.

          "Capitalized  Leases" means all leases that have been or should be, in
     accordance with GAAP, recorded as capitalized leases.

          "Cash Equivalents" means any of the following,  to the extent owned by
     the Borrower or any of its  Subsidiaries  free and clear of all Liens other
     than Liens created under the Collateral Documents:  (a) readily  marketable
     direct  obligations of the Government of the United States or any agency or
     instrumentality  thereof or obligations  unconditionally  guaranteed by the
     full  faith and credit of the  Government  of the  United  States  having a
     maturity  of not greater  than 360 days from the date of issuance  thereof,
     (b) insured  certificates  of deposit of or time deposits having a maturity
     of not  greater  than 360 days from the date of issuance  thereof  with any
     commercial  bank that is a Lender Party or a member of the Federal  Reserve
     System,  issues (or the parent of which issues)  commercial  paper rated as
     described in clause (c),  is organized  under the laws of the United States
     or any State  thereof and has  combined  capital and surplus of at least $1
     billion or  (c) commercial  paper having a maturity of not greater than 180
     days from the date of issuance  thereof in an  aggregate  amount of no more
     than  $2,500,000  per  issuer  outstanding  at  any  time,  issued  by  any
     corporation  organized under the laws of any State of the United States and
     rated  at  least  "Prime-1"  (or the  then  equivalent  grade)  by  Moody's
     Investors  Service,  Inc.  or  "A-1"  (or the  then  equivalent  grade)  by
     Standard & Poor's Ratings Group.

          "CERCLA" means the Comprehensive Environmental Response,  Compensation
     and Liability Act of 1980, as amended from time to time.

          "CERCLIS" means the Comprehensive Environmental Response, Compensation
     and  Liability  Information  System  maintained  by the U.S.  Environmental
     Protection Agency.

          "Co-Arrangers" means Fleet and M&T.

          "Collateral"  means all  "Collateral"  referred  to in the  Collateral
     Documents  and all other  property  that is or is intended to be subject to
     any  Lien in favor  of the  Administrative  Agent  for the  benefit  of the
     Secured Parties.

          "COMIDA" means the County of Monroe Industrial Development Agency.

          "Collateral Documents" means the Security Agreement,  the Intellectual
     Property Security  Agreement,  the Mortgages,  and any other agreement that
     creates or purports to create a Lien in favor of the  Administrative  Agent
     for the benefit of the Secured Parties.

          "Commitment" means a Term A Commitment, a Term B Commitment, a Working
     Capital Commitment or a Letter of Credit Commitment.
<PAGE>

          "Commitment  Fee  Percentage"  means at any time and from time to time
     (a) prior to July 1,  1997,  0.50% per annum and (b) from and after July 1,
     1997 a percentage per annum determined by reference to the Total Debt Ratio
     as set forth below:


          Total Debt Ratio              Commitment Fee Percentage

Level I: .......................................    .50
a ratio of greater
than 3.5:1


Level II: ......................................    .50
a ratio of 3.5:1
or less but at least
3.0:1

Level III: .....................................   .375
a ratio of less than
3.0:1 but at least 2.5:1

Level IV: ......................................   .375
a ratio of less
than 2.5:1



     ; provided,  however,  that (A) no change in the  Commitment Fee Percentage
     shall be effective  until three  Business  Days after the date on which the
     Administrative  Agent  receives  financial  statements  pursuant to Section
     5.03(c)  or (d) and a  certificate  of the chief  financial  officer of PSC
     demonstrating  such  ratio  and  (B)  if  PSC  has  not  submitted  to  the
     Administrative  Agent  the  information  described  in  clause  (A) of this
     proviso as and when required under Section  5.03(c) or (d), as the case may
     be, the Commitment  Fee Percentage  shall be at Level I for so long as such
     information has not been received by the Administrative Agent.

          "Company" has the meaning specified in the Preliminary Statements.

          "Confidential   Information"   means  information  that  the  Borrower
     furnishes  to the  Administrative  Agent or any  Lender  Party in a writing
     designated as confidential,  but does not include any such information that
     is or becomes generally available to the public other than as a result of a
     breach by the  Administrative  Agent or any Lender Party of its obligations
     hereunder or that is or becomes  available to the  Administrative  Agent or
     such Lender Party from a source other than the Borrower that is not, to the
     best of the Administrative Agent's or such Lender Party's knowledge, acting
     in violation of a confidentiality agreement with the Borrower.

          "Consolidated"  refers to the consolidation of accounts, in accordance
     with GAAP, of PSC and all of its Subsidiaries.

<PAGE>


          "Conversion,"  "Convert" and "Converted" each refer to a conversion of
     Advances  of  one  Type  into  Advances  of  the  other  Type  pursuant  to
     Section 2.09 or 2.10.

          "Current  Assets" of any Person  means all assets of such  Person that
     would,  in  accordance  with GAAP,  be  classified  as current  assets of a
     company  conducting  a  business  the  same as or  similar  to that of such
     Person,  after deducting  adequate reserves in each case in which a reserve
     is proper in accordance with GAAP.

          "Current  Liabilities" of any Person means (a) all Debt of such Person
     except Funded Debt that by its terms is payable on demand or matures within
     one year after the date of  determination  (excluding any Debt renewable or
     extendible, at the option of such Person, to a date more than one year from
     such date or arising  under a revolving  credit or similar  agreement  that
     obligates  the lender or lenders to extend  credit  during a period of more
     than one year from  such  date),  (b) all  amounts  of Funded  Debt of such
     Person  required to be paid or prepaid  within one year after such date and
     (c)  all  other  items  (including  taxes  accrued  as  estimated)  that in
     accordance  with GAAP would be  classified as current  liabilities  of such
     Person.

          "Debt" of any Person means, without duplication,  (a) all indebtedness
     of such Person for borrowed  money,  (b) all Obligations of such Person for
     the  deferred  purchase  price of property  or  services  (other than trade
     payables not overdue by more than 60 days  incurred in the ordinary  course
     of such Person's  business and trade  payables that are being  contested in
     good faith), (c) all Obligations of such Person evidenced by notes,  bonds,
     debentures or other similar instruments, (d) all Obligations of such Person
     created or arising  under any  conditional  sale or other  title  retention
     agreement with respect to property acquired by such Person (even though the
     rights and  remedies of the seller or lender  under such  agreement  in the
     event of default are limited to repossession or sale of such property), (e)
     all Obligations of such Person as lessee under Capitalized  Leases, (f) all
     Obligations,  contingent  or  otherwise,  of such Person under  acceptance,
     letter of credit or similar facilities,  (g) all Obligations of such Person
     to  purchase,  redeem,  retire,  defease or  otherwise  make any payment in
     respect of any capital  stock of or other  ownership or profit  interest in
     such  Person or any other  Person or any  warrants,  rights or  options  to
     acquire such capital  stock,  valued,  in the case of Redeemable  Preferred
     Stock,  at  the  greater  of  its  voluntary  or  involuntary   liquidation
     preference plus accrued and unpaid dividends,  (h) all  Obligations of such
     Person in respect of Hedge  Agreements,  (i) all Debt of others referred to
     in clauses (a) through (h) above or clause (j) below guaranteed directly or
     indirectly in any manner by such Person, or in effect  guaranteed  directly
     or  indirectly  by such Person  through an agreement (i) to pay or purchase
     such Debt or to advance or supply funds for the payment or purchase of such
     Debt, (ii) to purchase, sell or lease (as lessee or lessor) property, or to
     purchase or sell services, primarily for the purpose of enabling the debtor
     to make  payment of such Debt or to assure the holder of such Debt  against
     loss,  (iii) to supply funds to or in any other manner invest in the debtor
     (including  any agreement to pay for property or services  irrespective  of
     whether  such  property is  received  or such  services  are  rendered)  or
     (iv) otherwise to assure a creditor against loss, and (j) all Debt referred
     to in  clauses (a)  through (i) above of another  Person secured by (or for
     which  the  holder  of such  Debt  has an  existing  right,  contingent  or
     otherwise, to be
<PAGE>

     secured by) any Lien on property (including,  without limitation,  accounts
     and contract rights) owned by such Person,  even though such Person has not
     assumed or become liable for the payment of such Debt.

          "Default"  means  any  Event  of  Default  or  any  event  that  would
     constitute an Event of Default but for the requirement that notice be given
     or time elapse or both.

          "Defaulted  Advance"  means,  with  respect to any Lender Party at any
     time,  the portion of any Advance  required to be made by such Lender Party
     to the Borrower  pursuant to  Section 2.01 or 2.02 at or prior to such time
     which has not been made by such Lender Party or by the Administrative Agent
     for the account of such Lender Party pursuant to Section 2.02(e) as of such
     time.  In the event that a portion of a Defaulted  Advance  shall be deemed
     made pursuant to  Section 2.15(a),  the remaining portion of such Defaulted
     Advance shall be considered a Defaulted Advance  originally  required to be
     made pursuant to Section 2.01 on the same date as the Defaulted  Advance so
     deemed made in part.

          "Defaulted  Amount"  means,  with  respect to any Lender  Party at any
     time,  any  amount  required  to be  paid  by  such  Lender  Party  to  the
     Administrative Agent or any other Lender Party hereunder or under any other
     Loan  Document  at or prior to such  time  which has not been so paid as of
     such time, including, without limitation, any amount required to be paid by
     such Lender Party to (a) the Swing Line Bank pursuant to Section 2.02(b) to
     purchase a portion of a Swing Line Advance made by the Swing Line Bank, (b)
     the Issuing  Bank  pursuant  to Section  2.03(c) to purchase a portion of a
     Letter of Credit Advance made by the Issuing Bank,  (c) the  Administrative
     Agent pursuant to Section 2.02(e) to reimburse the Administrative Agent for
     the amount of any Advance made by the Administrative  Agent for the account
     of such Lender Party,  (d) any other Lender Party  pursuant to Section 2.13
     to purchase any  participation in Advances owing to such other Lender Party
     and (e) the  Administrative  Agent or the Issuing Bank  pursuant to Section
     7.05 to  reimburse  the  Administrative  Agent or the Issuing Bank for such
     Lender  Party's  ratable  share of any  amount  required  to be paid by the
     Lender Parties to the Administrative  Agent or the Issuing Bank as provided
     therein.  In the event that a portion of a Defaulted Amount shall be deemed
     paid pursuant to Section 2.15(b),  the remaining  portion of such Defaulted
     Amount shall be  considered a Defaulted  Amount  originally  required to be
     paid  hereunder  or under any other Loan  Document  on the same date as the
     Defaulted Amount so deemed paid in part.

          "Defaulting Lender" means, at any time, any Lender Party that, at such
     time, (a) owes a Defaulted  Advance or a Defaulted Amount or (b) shall take
     any  action  or be  the  subject  of any  action  or  proceeding  of a type
     described in Section 6.01(f).

          "Disclosed Litigation" has the meaning specified in Section 3.01(g).

          "Domestic Lending Office" means, with respect to any Lender Party, the
     office of such Lender Party  specified  as its  "Domestic  Lending  Office"
     opposite its name on Schedule I  hereto or in the Assignment and Acceptance

<PAGE>

     pursuant  to which it  became a Lender  Party,  as the case may be, or such
     other  office of such Lender  Party as such  Lender  Party may from time to
     time specify to the Borrower and the Administrative Agent.

          "EBITDA" means, for any period, the sum,  determined on a Consolidated
     basis, of (a) net income (or net loss),  (b) interest  expense,  (c) income
     tax expense,  (d) depreciation expense and (e) amortization expense in each
     case of PSC and its  Subsidiaries,  determined in accordance  with GAAP for
     such  period  (excluding,  in the case of the  Fiscal  Quarter in which the
     consummation of the Acquisition  occurs, any restructuring  charge taken by
     PSC and its Subsidiaries, in respect of the Acquisition).

          "Eligible Assignee" means (a) with respect to any Facility (other than
     the  Letter  of Credit  Facility),  (i) a Lender;  (ii) an  Affiliate  of a
     Lender;  (iii) a  commercial  bank  organized  under the laws of the United
     States,  or any  State  thereof,  and  having  total  assets  in  excess of
     $500,000,000; (iv) a savings and loan association or savings bank organized
     under the laws of the United States, or any State thereof, and having total
     assets in excess of $500,000,000; (v) a commercial bank organized under the
     laws of any other  country  that is a member  of the OECD or has  concluded
     special  lending   arrangements  with  the   International   Monetary  Fund
     associated  with  its  General  Arrangements  to  Borrow  or of the  Cayman
     Islands, or a political  subdivision of any such country,  and having total
     assets in excess of $500,000,000,  so long as such bank is acting through a
     branch or agency located in the United States; (vi) the central bank of any
     country that is a member of the OECD;  (vii) a finance  company,  insurance
     company or other  financial  institution  or fund  (whether a  corporation,
     partnership,  trust or other entity) that is engaged in making,  purchasing
     or otherwise  investing in commercial  loans in the ordinary  course of its
     business and having total assets in excess of $500,000,000;  and (viii) any
     other Person approved by the  Administrative  Agent and the Borrower,  such
     approval not to be unreasonably  withheld or delayed,  and (b) with respect
     to the Letter of Credit  Facility,  a Person that is an  Eligible  Assignee
     under  subclause  (iii)  or (v) of  clause  (a) of this  definition  and is
     approved by the Administrative Agent and the Borrower, such approval not to
     be unreasonably  withheld or delayed;  provided,  however, that neither any
     Loan Party nor any  Affiliate of a Loan Party shall  qualify as an Eligible
     Assignee under this definition.

          "Eligible  Receivables"  means  only such  Receivables  of PSC and its
     Subsidiaries as the Administrative Agent, in its reasonable judgment, shall
     from time to time elect to consider  Eligible  Receivables  for purposes of
     this Agreement.  The value of such  Receivables  shall be determined by the
     Administrative  Agent in its reasonable judgment taking into consideration,
     among other factors,  their book value  determined in accordance with GAAP.
     By  way of  example  only,  and  without  limiting  the  discretion  of the
     Administrative  Agent  to  consider  any  Receivables  not  to be  Eligible
     Receivables,  the  Administrative  Agent may consider any of the  following
     classes of Receivables not to be Eligible Receivables:

               (a)  Receivables  that do not  arise  out of  sales  of  goods or
          rendering  of  services  in the  ordinary  course  of  the  Borrower's
          business;

<PAGE>

               (b)  Receivables on terms other than those normal or customary in
          the Borrower's business;

               (c) Receivables owing from any Person that is an Affiliate of the
          Borrower;

               (d) In the case of Lazerdata  Holdings Inc. and its  Subsidiaries
          Receivables more than 180 days past original invoice date or more than
          60 days  past  the date  due  and,  in the  case of PSC and its  other
          Subsidiaries,  Receivables  more than 150 days past  original  invoice
          date or more than 60 days past the date due;

               (e)  Receivables  owing from any Person  from which an  aggregate
          amount of more than 50% of the Receivables  owing is more than 60 days
          past due;

               (f)  Receivables  owing from any Person that shall take or be the
          subject  of  any  action  or  proceeding   of  a  type   described  in
          Section 6.01(f);

               (g) Receivables (i) owing from any Person that is also a supplier
          to or creditor of the Borrower unless such Person has waived any right
          of set-off in a reasonably  manner  acceptable  to the  Administrative
          Agent or (ii) representing any  manufacturer's or supplier's  credits,
          discounts,  incentive  plans or  similar  arrangements  entitling  the
          Borrower to discounts on future purchase therefrom;

               (h)  Receivables   arising  out  of  sales  on  a  bill-and-hold,
          guaranteed sale, sale-or-return, sale on approval or consignment basis
          or subject to any right of return, set-off or charge-back;

               (i)  Receivables  owing from an account debtor that is an agency,
          department  or  instrumentality  of the  United  States  or any  State
          thereof unless the Borrower shall have satisfied the  requirements  of
          the  Assignment  of Claims Act of 1940,  as  amended,  and any similar
          State legislation and the Administrative  Agent is satisfied as to the
          absence of set-offs,  counterclaims  and other defenses on the part of
          such account debtor;

               (j)  Receivables  the  full  and  timely  payment  of  which  the
          Administrative  Agent in its reasonable  judgment,  after consultation
          with the Borrower, believes to be doubtful; and

               (k) Receivables in respect of which the Security Agreement, after
          giving effect to the related filings of financing statements that have
          then been made,  if any,  does not or has ceased to create a valid and
          perfected  first  priority  lien or security  interest in favor of the
          Secured Parties securing the Secured Obligations.

          "Environmental  Action" means any action, suit, demand, demand letter,
     claim,  notice of  non-compliance  or  violation,  notice of  liability  or
     potential
<PAGE>

     liability,  investigation,  proceeding,  consent order or consent agreement
     relating in any way to any Environmental  Law, any Environmental  Permit or
     Hazardous  Material  or  arising  from  alleged  injury or threat to public
     health and safety or the environment, including, without limitation, (a) by
     any governmental or regulatory authority for enforcement, cleanup, removal,
     response,  remedial or other actions or damages and (b) by any governmental
     or  regulatory   authority  or  third  party  for  damages,   contribution,
     indemnification, cost recovery, compensation or injunctive relief.

          "Environmental  Law"  means  any  federal,  state,  local  or  foreign
     statute,  law, ordinance,  rule,  regulation,  code, order, writ, judgment,
     injunction, decree or judicial or agency interpretation, policy or guidance
     relating  to  pollution  or  protection  of  the   environment  or  natural
     resources,  including,  without  limitation,  those  relating  to the  use,
     handling,   transportation,   treatment,   storage,  disposal,  release  or
     discharge of Hazardous Materials.

          "Environmental  Permit"  means any  permit,  approval,  identification
     number,  license or other  authorization  required under any  Environmental
     Law.

          "ERISA" means the Employee  Retirement Income Security Act of 1974, as
     amended  from time to time,  and the  regulations  promulgated  and rulings
     issued thereunder.

          "ERISA  Affiliate"  means any Person that for  purposes of Title IV of
     ERISA is a member  of the  controlled  group  of any Loan  Party,  or under
     common  control  with any Loan Party,  within the meaning of Section 414 of
     the Internal Revenue Code.

          "ERISA  Event" means (a) (i) the  occurrence  of a  reportable  event,
     within  the  meaning  of Section  4043 of ERISA,  with  respect to any Plan
     unless the 30-day  notice  requirement  with respect to such event has been
     waived by the PBGC, or (ii) the  requirements  of subsection (1) of Section
     4043(b) of ERISA (without regard to subsection (2) of such Section) are met
     with respect to a contributing  sponsor,  as defined in Section 4001(a)(13)
     of ERISA, of a Plan, and an event  described in paragraph (9), (10),  (11),
     (12) or (13) of Section  4043(c) of ERISA is  reasonably  expected to occur
     with respect to such Plan within the following 30 days; (b) the application
     for a minimum  funding  waiver with respect to a Plan; (c) the provision by
     the administrator of any Plan of a notice of intent to terminate such Plan,
     pursuant to Section  4041(a)(2)  of ERISA  (including  any such notice with
     respect to a plan amendment  referred to in Section 4041(e) of ERISA);  (d)
     the  cessation of  operations  at a facility of any Loan Party or any ERISA
     Affiliate in the  circumstances  described in Section 4062(e) of ERISA; (e)
     the  withdrawal  by any Loan Party or any ERISA  Affiliate  from a Multiple
     Employer Plan during a plan year for which it was a  substantial  employer,
     as  defined  in  Section  4001(a)(2)  of  ERISA;  (f)  the  conditions  for
     imposition of a lien under Section 302(f) of ERISA shall have been met with
     respect to any Plan;  (g) the adoption of an amendment to a Plan  requiring
     the provision of security to such Plan pursuant to Section 307 of ERISA; or
     (h) the institution by the PBGC of proceedings to terminate a Plan pursuant
     to  Section  4042 of ERISA,  or the  occurrence  of any event or  condition
     described  in  Section  4042 of  ERISA  that  constitutes  grounds  for the
     termination of, or the appointment of a trustee to administer, such Plan.

<PAGE>

          "Escrow   Agreement"  has  the  meaning   specified  in  the  Purchase
     Agreement.

          "Eurocurrency  Liabilities" has the meaning  specified in Regulation D
     of the Board of Governors of the Federal Reserve System,  as in effect from
     time to time.

          "Eurodollar  Lending Office" means,  with respect to any Lender Party,
     the  office of such  Lender  Party  specified  as its  "Eurodollar  Lending
     Office"  opposite  its name on Schedule I hereto or in the  Assignment  and
     Acceptance  pursuant  to which it  became a Lender  Party  (or,  if no such
     office is specified,  its Domestic Lending Office), or such other office of
     such Lender Party as such Lender Party may from time to time specify to the
     Borrower and the Administrative Agent.

          "Eurodollar  Rate" means,  for any Interest  Period for all Eurodollar
     Rate Advances  comprising part of the same Borrowing,  an interest rate per
     annum equal to the rate per annum  obtained  by  dividing  (a) the rate per
     annum at which  deposits  in U.S.  dollars  are offered by Fleet in London,
     England to prime banks in the London interbank market at 11:00 A.M. (London
     time) two Business Days before the first day of such Interest  Period in an
     amount  substantially  equal to Fleet's  Eurodollar Rate Advance comprising
     part of such Borrowing to be outstanding  during such Interest  Period (or,
     if Fleet shall not have such a Eurodollar Rate Advance, $1,000,000) and for
     a period equal to such Interest  Period by (b) a  percentage  equal to 100%
     minus the Eurodollar Rate Reserve Percentage for such Interest Period.

          "Eurodollar  Rate Advance"  means,  an Advance that bears  interest as
     provided in Section 2.07(a)(ii).

          "Eurodollar  Rate Reserve  Percentage" for any Interest Period for all
     Eurodollar  Rate Advances  comprising  part of the same Borrowing means the
     reserve  percentage  applicable  two Business  Days before the first day of
     such  Interest  Period  under  regulations  issued from time to time by the
     Board of Governors of the Federal  Reserve  System (or any  successor)  for
     determining the maximum reserve requirement (including, without limitation,
     any emergency,  supplemental or other marginal  reserve  requirement) for a
     member bank of the Federal  Reserve System in New York City with respect to
     liabilities or assets consisting of or including  Eurocurrency  Liabilities
     (or with  respect  to any  other  category  of  liabilities  that  includes
     deposits  by  reference  to which  the  interest  rate on  Eurodollar  Rate
     Advances  is  determined)  having  a term  equal to such  Interest  Period.

          "Events of Default" has the meaning specified in Section 6.01.

          "Excess  Cash Flow"  means for any period the sum of (i) EBITDA of PSC
     and its  Subsidiaries for such period plus (ii) the aggregate amount of all
     non-cash  charges  deducted in arriving at EBITDA plus (iii) if there was a
     net  increase  in   Consolidated   Current   Liabilities  of  PSC  and  its
     Subsidiaries  during  such  period,  the amount of such net  increase  plus
     (iv) if there was a net decrease in Consolidated  Current Assets (excluding
     cash and Cash  Equivalents) of PSC and its Subsidiaries  during such period

<PAGE>

     the amount of such net decrease less (v) the aggregate  amount of mandatory
     prepayments or repayments of principal made by PSC and its  Subsidiaries on
     any Funded  Debt of PSC and its  Subsidiaries  during such period less (vi)
     Capital  Expenditures of PSC and its Subsidiaries  less (vii) the aggregate
     amount of all federal,  state,  local and foreign taxes paid by PSC and its
     Subsidiaries  during  such  period  less  (viii)  the  aggregate  amount of
     interest  paid on any Funded Debt of PSC and its  Subsidiaries  during such
     periods less (ix) the aggregate  amount of all non-cash credits included in
     arriving  at  such  EBITDA  less  (x)  if  there  was  a  net  decrease  in
     Consolidated  Current  Liabilities of PSC and its Subsidiaries  during such
     period,  the  amount  of such net  decrease  less  (xi) if  there was a net
     increase  in   Consolidated   Current  Assets   (excluding  cash  and  Cash
     Equivalents) of PSC and its  Subsidiaries  during such period the amount of
     such increase.

          "Existing  Debt" means Debt of TxCom,  Scanning  and its  Subsidiaries
     outstanding immediately before giving effect to the Acquisition.

          "Extraordinary  Receipt"  means any cash received by or paid to or for
     the  account  of any  Person  not  in  the  ordinary  course  of  business,
     including,  without  limitation,  tax  refunds,  pension  plan  reversions,
     proceeds  of  insurance  (other  than  proceeds  of  business  interruption
     insurance  to the extent such  proceeds  constitute  compensation  for lost
     earnings), condemnation awards (and payments in lieu thereof) and indemnity
     payments;  provided,  however,  that an  Extraordinary  Receipt  shall  not
     include cash receipts  received  from  proceeds of insurance,  condemnation
     awards (or payments in lieu  thereof) or  indemnity  payments to the extent
     that such proceeds,  awards or payments (A) in respect of loss or damage to
     equipment,  fixed  assets or real  property  are  applied (or in respect of
     which  expenditures  were  previously  incurred)  to  replace or repair the
     equipment,  fixed assets or real property in respect of which such proceeds
     were received in accordance with the terms of the Loan  Documents,  so long
     as such  application  is made within 6 months after the  occurrence of such
     damage or loss or (B) are  received  by any  Person in respect of any third
     party claim  against such Person and applied to pay (or to  reimburse  such
     Person for its prior  payment of) such claim and the costs and  expenses of
     such Person with respect thereto.

          "Facility" means the Term A Facility, the Term B Facility, the Working
     Capital Facility, the Swing Line Facility or the Letter of Credit Facility.

          "Federal  Funds Rate" means,  for any period,  a fluctuating  interest
     rate per  annum  equal for each day  during  such  period  to the  weighted
     average of the rates on overnight  Federal funds  transactions with members
     of the  Federal  Reserve  System  arranged  by Federal  funds  brokers,  as
     published for such day (or, if such day is not a Business Day, for the next
     preceding  Business  Day) by the Federal  Reserve Bank of New York,  or, if
     such  rate is not so  published  for any day that is a  Business  Day,  the
     average of the  quotations for such day for such  transactions  received by
     the  Administrative  Agent from three  Federal  funds brokers of recognized
     standing selected by it.

          "Fiscal  Year"  means  a  fiscal  year  of PSC  and  its  Consolidated
     Subsidiaries ending on December 31 in any calendar year.

<PAGE>

          "Foreign Sales  Agreements" has the meaning  specified in the Purchase
     Agreement.

          "Foreign Subsidiary" means each of the following:  (A) each Subsidiary
     of PSC  identified  as such on  Schedule  II  annexed  hereto  and (B) each
     Subsidiary of PSC which is organized under the laws of a jurisdiction other
     than the United States of America or any state thereof.

          "Funded Debt" of any Person means Debt in respect of the Advances,  in
     the case of the  Borrower,  and all other Debt of such  Person  that by its
     terms matures more than one year after the date of determination or matures
     within  one year from  such date but is  renewable  or  extendible,  at the
     option of such  Person,  to a date more  than one year  after  such date or
     arises under a revolving  credit or similar  agreement  that  obligates the
     lender or  lenders to extend  credit  during a period of more than one year
     after such date.

          "GAAP" has the meaning specified in Section 1.03.

          "Guaranteed Obligations" has the meaning specified in Section 9.01.

          "Guarantors" means PSC and the Subsidiary Guarantors.

          "Hazardous  Materials"  means  (a) petroleum  or  petroleum  products,
     by-products    or    breakdown     products,     radioactive     materials,
     asbestos-containing materials,  polychlorinated biphenyls and radon gas and
     (b) any other chemicals, materials or substances designated,  classified or
     regulated as hazardous or toxic or as a pollutant or contaminant  under any
     Environmental Law.

          "Hedge Agreements" means interest rate swap, cap or collar agreements,
     interest  rate  future  or  option  contracts,  currency  swap  agreements,
     currency future or option contracts and other similar agreements.

          "Hedge  Bank" means any Lender  Party in its  capacity as a party to a
     Bank Hedge Agreement.

          "Indemnified Party" has the meaning specified in Section 8.04(b).

          "Information  Memorandum" means the information memorandum dated June,
     1996 used by the  Co-Arrangers  in connection  with the  syndication of the
     Commitments.

          "Initial  Extension  of  Credit"  means  the  earlier  to occur of the
     initial Borrowing and the initial issuance of a Letter of Credit hereunder.

          "Initial Issuing Bank" means Fleet.

          "Initial  Lenders" has the meaning specified in the recital of parties
     to this Agreement.
<PAGE>

          "Insufficiency"  means,  with respect to any Plan, the amount, if any,
     of its unfunded benefit liabilities,  as defined in  Section 4001(a)(18) of
     ERISA.

          "Intellectual  Property Security  Agreement" has the meaning specified
     in Section 3.01(l)(x).

          "Interest  Expense" means,  with respect to any Person for any period,
     interest expense on all Debt of such Person for such period net of interest
     income  for  such  period,  whether  paid  or  accrued,   determined  on  a
     Consolidated  basis for such Person and its  Subsidiaries and in accordance
     with  GAAP,  and  including,  without  limitation,  (a) in the case of PSC,
     interest  expense in  respect  of Debt  resulting  from  Advances,  (b) the
     interest  component  of  all  obligations  under  Capitalized  Leases,  (c)
     commissions,  discounts  and other fees and charges  payable in  connection
     with letters of credit (including,  without limitation, Letters of Credit),
     (d) the net payment,  if any,  payable in connection with Hedge  Agreements
     less the net credit,  if any,  received in connection with Hedge Agreements
     and (e) in the case of the Borrower,  all fees paid by such Person pursuant
     to Section 2.08(a).

          "Interest  Period" means, for each Eurodollar Rate Advance  comprising
     part of the  same  Borrowing,  the  period  commencing  on the date of such
     Eurodollar  Rate  Advance or the date of the  Conversion  of any Prime Rate
     Advance into such  Eurodollar  Rate Advance,  and ending on the last day of
     the period selected by the Borrower  pursuant to the provisions  below and,
     thereafter,  each  subsequent  period  commencing  on the  last  day of the
     immediately  preceding  Interest  Period  and ending on the last day of the
     period  selected by the  Borrower  pursuant to the  provisions  below.  The
     duration  of each such  Interest  Period  shall be one,  two,  three or six
     months,  as the Borrower  may, upon notice  received by the  Administrative
     Agent not later  than  11:00 A.M.  (Rochester,  New York time) on the third
     Business  Day  prior to the  first  day of such  Interest  Period,  select;
     provided, however, that:

               (a) the Borrower may not select any Interest  Period with respect
          to any  Eurodollar  Rate Advance  under a Facility that ends after any
          principal repayment  installment date for such Facility unless,  after
          giving effect to such  selection,  the aggregate  principal  amount of
          Prime Rate Advances and of Eurodollar  Rate Advances  having  Interest
          Periods that end on or prior to such principal  repayment  installment
          date  for such  Facility  shall  be at  least  equal to the  aggregate
          principal amount of Advances under such Facility due and payable on or
          prior to such date;

               (b) Interest  Periods  commencing on the same date for Eurodollar
          Rate Advances  comprising  part of the same Borrowing  shall be of the
          same duration;

               (c) whenever the last day of any Interest  Period would otherwise
          occur  on a day  other  than a  Business  Day,  the  last  day of such
          Interest  Period  shall be  extended  to occur on the next  succeeding
          Business Day, provided,  however,  that, if such extension would cause
          the last day of such  Interest  Period to occur in the next  following
          calendar  month,  the last day of such Interest  Period shall occur on
          the next preceding Business Day; and
<PAGE>

               (d) whenever the first day of any Interest Period occurs on a day
          of an  initial  calendar  month  for  which  there  is no  numerically
          corresponding  day in the calendar  month that  succeeds  such initial
          calendar  month by the number of months  equal to the number of months
          in such Interest  Period,  such Interest  Period shall end on the last
          Business Day of such succeeding calendar month.

          "Internal  Revenue  Code" means the Internal  Revenue Code of 1986, as
     amended  from time to time,  and the  regulations  promulgated  and rulings
     issued thereunder.

          "Investment"  in any Person  means any loan or advance to such Person,
     any purchase or other  acquisition of any capital stock or other  ownership
     or  profit  interest,  warrants,  rights,  options,  obligations  or  other
     securities of such Person,  any capital  contribution to such Person or any
     other  investment  in  such  Person,  including,  without  limitation,  any
     arrangement  pursuant  to  which  the  investor  incurs  Debt of the  types
     referred to in clause (i) or (j) of the  definition of "Debt" in respect of
     such Person.

          "IRB Documents" means (i) the Installment  Sale Agreement  between the
     Oregon Economic Development Commission,  acting for itself and on behalf of
     the  Department  of  Economic  Development,  and as  designee  of the State
     Treasurer (collectively, the "OEDC") (as such interest of OEDC was assigned
     to  the  Bond  Trustee  by   assignment   dated   January  1,  1981),   and
     Spectra-Physics,  Inc. dated January 1, 1981, (ii) the Assignment of Rights
     Under   Installment   Sale   Agreement   dated   December   21,   1990   by
     Spectra-Physics,  Inc. to Scanning,  (iii) all financing  statements  filed
     naming the OEDC as secured party and  Spectra-Physics,  Inc. as debtor,  or
     naming the OEDC as debtor and Bank of America Oregon as secured party, (iv)
     the   Guaranty   Agreement   dated  July  1,  1979  between  the  OEDC  and
     Spectra-Physics,  Inc.  and (v) the  Indenture of Trust dated as of July 1,
     1979 between the OEDC and the Bond Trustee.

          "IRB Notices" has the meaning specified in Section 3.01(l)(xiv).

          "IRB Property" means the real estate in Eugene,  Oregon,  that is more
     particularly described on Schedule 4.01(ff).

          "Issuing  Bank"  means  the  Initial  Issuing  Bank and each  Eligible
     Assignee  to which  the  Letter  of Credit  Commitment  hereunder  has been
     assigned pursuant to Section 8.07.

          "L/C  Cash  Collateral  Account"  has  the  meaning  specified  in the
     Security Agreement.

          "L/C  Related   Documents"  has  the  meaning   specified  in  Section
     2.04(e)(ii).

          "Lender  Party"  means any Lender,  the Issuing Bank or the Swing Line
     Bank.

          "Lenders"  means the Initial Lenders and each Person that shall become
     a Lender hereunder pursuant to Section 8.07.

<PAGE>

          "Letter of Credit" has the meaning specified in Section 2.01(e).

          "Letter of Credit  Advance"  means an advance made by the Issuing Bank
     or any Working Capital Lender pursuant to Section 2.03(c).

          "Letter of Credit  Agreement"  has the  meaning  specified  in Section
     2.03(a)(E).

          "Letter of Credit Commitment" means, with respect to the Issuing Bank,
     the amount set forth  opposite the Issuing Bank's name on Schedule I hereto
     under the caption "Letter of Credit Commitment" or, if the Issuing Bank has
     entered into one or more  Assignments  and  Acceptances,  set forth for the
     Issuing  Bank  in  the  Register  maintained  by the  Administrative  Agent
     pursuant  to  Section  8.07(d)  as the  Issuing  Bank's  "Letter  of Credit
     Commitment,"  as such  amount  may be  reduced  at or  prior  to such  time
     pursuant to Section 2.05.

          "Letter of Credit Facility" means, at any time, an amount equal to the
     amount of the Issuing  Bank's Letter of Credit  Commitment at such time, as
     such  amount may be reduced  at or prior to such time  pursuant  to Section
     2.05.

          "Lien"  means  any  lien,   security   interest  or  other  charge  or
     encumbrance  of any kind,  or any other type of  preferential  arrangement,
     including,  without  limitation,  the lien or retained  security title of a
     conditional  vendor and any easement,  right of way or other encumbrance on
     title to real property.

          "Loan  Documents"  means (a) for  purposes of this  Agreement  and the
     Notes and any amendment or modification hereof or thereof and for all other
     purposes  other  than  for  purposes  of the  Subsidiary  Guaranty  and the
     Collateral  Documents,  (i) this  Agreement,  (ii)  the  Notes,  (iii)  the
     Subsidiary  Guaranty,  (iv) the  Collateral  Documents,  (v) each Letter of
     Credit Agreement and (vi) the Assumption  Agreement and (b) for purposes of
     the Subsidiary Guaranty and the Collateral  Documents,  (i) this Agreement,
     (ii)  the  Notes,  (iii)  the  Subsidiary  Guaranty,  (iv)  the  Collateral
     Documents,  (v) each  Letter  of  Credit  Agreement,  (vi)  the  Assumption
     Agreement and (vii) each Bank Hedge  Agreement,  in each case as amended or
     otherwise modified from time to time.

          "Loan Parties" means the Borrower and the Guarantors.

          "M&T" means Manufacturers and Traders Trust Company.

          "Margin Stock" has the meaning specified in Regulation U.

          "Material Adverse Change" means any material adverse change in (a) the
     business,  condition  (financial or  otherwise),  operations,  performance,
     properties or prospects of any Loan Party and its Subsidiaries  (taken as a
     whole),  (b) the ability of the  Borrower or any  Guarantor  to perform its
     obligations under the Loan Documents or (c) any aspect of the Transaction.

<PAGE>

          "Material  Adverse  Effect"  has  the  meaning  specified  in  Section
     3.01(g).

          "Material  Contract" means, with respect to any Person,  each contract
     listed on Schedule  4.01(hh),  each contract  which is a  replacement  or a
     substitute  for any  contract  listed on Schedule  4.01(hh)  and each other
     contract to which such Person is a party which is material to the business,
     condition (financial or otherwise), operations,  performance, properties or
     prospects of such Person.

          "Merger" has the meaning specified in the Preliminary Statements.

          "Merger  Agreement"  means the Plan and Agreement of Merger dated July
     __, 1996  adopted by the Board of  Directors  of Scanning  and the Board of
     Directors of PSC Acquisition.

          "Mortgage"  means the New York Mortgage,  the Oregon Deed of Trust and
     each  other  mortgage  delivered  pursuant  to  Section  5.01(o) or Section
     5.01(s),  in each case as amended,  supplemented or otherwise modified from
     time to time.

          "Mortgage Policy" has the meaning specified in Section 3.01(l)(xi)(B).

          "Multiemployer Plan" means a multiemployer plan, as defined in Section
     4001(a)(3)  of ERISA,  to which any Loan  Party or any ERISA  Affiliate  is
     making or accruing an obligation to make  contributions,  or has within any
     of the  preceding  five plan years made or  accrued an  obligation  to make
     contributions.

          "Multiple  Employer Plan" means a single  employer plan, as defined in
     Section  4001(a)(15) of ERISA,  that (a) is maintained for employees of any
     Loan Party or any ERISA  Affiliate  and at least one Person  other than the
     Loan  Parties  and the ERISA  Affiliates  or (b) was so  maintained  and in
     respect of which any Loan Party or any ERISA Affiliate could have liability
     under Section 4064 or 4069 of ERISA in the event such plan has been or were
     to be terminated.

          "Net Cash Proceeds" means, with respect to any sale,  lease,  transfer
     or other  disposition  of any asset or the sale or  issuance of any Debt or
     capital  stock  or other  ownership  or  profit  interest,  any  securities
     convertible  into or  exchangeable  for capital stock or other ownership or
     profit  interest or any warrants,  rights,  options or other  securities to
     acquire  capital stock or other  ownership or profit interest by any Person
     (other than the sale of shares of common  stock of PSC to  employees of PSC
     pursuant to the  exercise of stock  options  received by such  employees in
     connection  with the PSC Stock  Option  Plans and the sale or  issuance  of
     shares of  Common  Stock of PSC upon the  exercise  by the  holders  of the
     Subordinated Notes of the Warrants),  or any Extraordinary Receipt received
     by or paid to or for the account of any  Person,  the  aggregate  amount of
     cash  received  from time to time  (whether  as  initial  consideration  or
     through payment or disposition of deferred  consideration)  by or on behalf
     of  such  Person  in  connection  with  such  transaction  after  deducting
     therefrom only (without duplication) (a) reasonable and customary brokerage
     commissions, underwriting

<PAGE>

     fees and  discounts,  legal fees,  finder's fees and other similar fees and
     commissions  and (b) the amount of taxes payable in connection with or as a
     result of such transaction and (c) the amount of any Debt secured by a Lien
     on such asset  that,  by the terms of such  transaction,  is required to be
     repaid upon such disposition,  in each case to the extent,  but only to the
     extent,  that the amounts so  deducted  are, at the time of receipt of such
     cash,  actually paid to a Person that is not an Affiliate of such Person or
     any  Loan  Party  or any  Affiliate  of any  Loan  Party  and are  properly
     attributable  to such  transaction  or to the  asset  that  is the  subject
     thereof.

          "New York Mortgage" has the meaning specified in Section 3.01(l)(xi).

          "New York Tax  Agreement"  means the Payment in Lieu of Tax  Agreement
     dated November 1, 1993 between COMIDA and PSC.

          "Nonratable Assignment" means an assignment by a Lender Party pursuant
     to Section  8.07(a) of a portion of its rights and  obligations  under this
     Agreement,  other  than an  assignment  of a  uniform,  and not a  varying,
     percentage of all of the rights and  obligations of such Lender Party under
     and in respect of all of the  Facilities  (other  than the Letter of Credit
     Facility and the Swing Line Facility).

          "Note" means a Term A Note, a Term B Note or a Working Capital Note.

          "Notice of Borrowing" has the meaning specified in Section 2.02(a).

          "Notice of Issuance" has the meaning specified in Section 2.03(a).

          "Notice of Renewal" has the meaning specified in Section 2.01(e).

          "Notice of Swing Line Borrowing" has the meaning  specified in Section
     2.02(b).

          "Notice of Termination" has the meaning specified in Section 2.01(e).

          "NPL" means the National Priorities List under CERCLA.

          "Obligation"   means,  with  respect  to  any  Person,   any  payment,
     performance  or other  obligation  of such  Person of any kind,  including,
     without limitation,  any liability of such Person on any claim,  whether or
     not the right of any  creditor  to  payment  in  respect  of such  claim is
     reduced to judgment, liquidated,  unliquidated, fixed, contingent, matured,
     disputed,  undisputed,  legal, equitable, secured or unsecured, and whether
     or not such  claim is  discharged,  stayed  or  otherwise  affected  by any
     proceeding referred to in Section 6.01(f).  Without limiting the generality
     of the  foregoing,  the  Obligations  of the Loan  Parties  under  the Loan
     Documents include (a) the obligation to pay principal,  interest, Letter of
     Credit  commissions,   charges,   expenses,   fees,   attorneys'  fees  and
     disbursements,  indemnities  and other  amounts  payable  by any Loan Party
     under  any  Loan  Document  and (b) the  obligation  of any  Loan  Party to
     reimburse  any amount in respect  of any of the  foregoing  that any Lender
     Party,  in its sole  discretion,  may elect to pay or  advance on behalf of
     such Loan Party.
<PAGE>


          "OECD"   means  the   Organization   for  Economic   Cooperation   and
     Development.

          "Open Year" has the meaning specified in Section 4.01(w).

          "Oregon   Deed  of  Trust"  has  the  meaning   specified  in  Section
     3.01(l)(xi).

          "Other Taxes" has the meaning specified in Section 2.12(b).

          "PBGC"  means  the  Pension  Benefit  Guaranty   Corporation  (or  any
     successor).

          "Permitted Encumbrances" has the meaning specified in the Mortgages.

          "Permitted  Liens"  means  such  of  the  following  as  to  which  no
     enforcement,  collection,  execution,  levy or foreclosure proceeding shall
     have been  commenced:  (a) Liens for taxes,  assessments  and  governmental
     charges or levies not yet due and payable;  (b) Liens  imposed by law, such
     as materialmen's,  mechanics',  carriers',  workmen's and repairmen's Liens
     and other similar Liens arising in the ordinary course of business securing
     obligations  that  are not  overdue  for a  period  of more  than 30  days;
     (c) pledges or deposits to secure  obligations under workers'  compensation
     laws or similar  legislation or to secure public or statutory  obligations;
     and (d) Permitted Encumbrances.

          "Person" means an individual,  partnership,  corporation  (including a
     business trust),  limited liability  company,  joint stock company,  trust,
     unincorporated association,  joint venture or other entity, or a government
     or any political subdivision or agency thereof.

          "Plan" means a Single Employer Plan or a Multiple Employer Plan.

          "Pre-Commitment  Information"  has the  meaning  specified  in Section
     3.01(j).

          "Preferred  Stock"  means,  with respect to any  corporation,  capital
     stock  issued by such  corporation  that is  entitled  to a  preference  or
     priority over any other capital stock issued by such  corporation  upon any
     distribution  of such  corporation's  assets,  whether by  dividend or upon
     liquidation.

          "Prime  Rate" means a  fluctuating  interest  rate per annum in effect
     from time to time,  which rate per annum shall at all times be equal to the
     higher of:

               (a)  the  rate  of  interest   announced  publicly  by  Fleet  in
          Rochester, New York from time to time, as Fleet's prime rate; or

               (b) 1/2 of one percent per annum above the Federal Funds Rate.

          "Prime Rate Advance"  means an Advance that bears interest as provided
     in Section 2.07(a)(i).

<PAGE>

          "Pro Forma EBITDA" means for each fiscal  quarter  ending on September
     30, 1995,  December  31, 1995,  March 31, 1996 and June 30, 1996 the amount
     listed on Schedule III for such fiscal quarter.

          "Pro Rata  Share" of any amount  means,  with  respect to any  Working
     Capital Lender at any time, the product of such amount times a fraction the
     numerator  of  which  is  the  amount  of  such  Lender's  Working  Capital
     Commitment at such time and the denominator of which is the Working Capital
     Facility at such time.

          "PSC" has the  meaning  specified  in the  recital  of parties to this
     Agreement.

          "PSC Guaranty" has the meaning specified in Section 9.01.

          "PSC Stock  Option  Plans" means the 1987 Stock Option Plan of PSC and
     the 1994 Stock Option Plan of PSC.

          "Purchase  Agreement"  has the meaning  specified  in the  Preliminary
     Statements.

          "Receivables" means all Receivables referred to in Section 1(c) of the
     Security Agreement.

          "Redeemable"  means,  with  respect  to any  capital  stock  or  other
     ownership or profit interest,  Debt or other right or Obligation,  any such
     right or Obligation that (a) the issuer has undertaken to redeem at a fixed
     or  determinable  date or dates,  whether by operation of a sinking fund or
     otherwise,  or upon the  occurrence  of a condition  not solely  within the
     control of the issuer or (b) is redeemable at the option of the holder.

          "Reduction Amount" has the meaning specified in Section 2.06(b)(vi).

          "Register" has the meaning specified in Section 8.07(d).

          "Registration  Rights  Agreement"  has the  meaning  specified  in the
     Purchase Agreement.

          "Regulation  U" means  Regulation U  of the Board of  Governors of the
     Federal Reserve System, as in effect from time to time.

          "Related   Documents"  means  the  Purchase   Agreement,   the  Merger
     Agreement,  the Subordinated  Debt Documents,  the Seller Note, the Foreign
     Sales  Agreements,   the  Escrow  Agreement,   the  TxCom  Agreement,   the
     Registration  Rights Agreement,  the Transition  Services Agreement and the
     New York Tax Agreement.

          "Required  Lenders" means at any time Lenders owed or holding at least
     66-2/3% of the sum of (a) the  aggregate  principal  amount of the Advances
     outstanding  at such  time and (b) the  aggregate  Available  Amount of all
     Letters of Credit outstanding at such time, or, if no
<PAGE>

     such  principal  amount and no Letters  of Credit are  outstanding  at such
     time,  Lenders  holding  at least  66-2/3% of the  aggregate  of the Term A
     Commitments,  Term B Commitments  and Working Capital  Commitments  owed or
     holding at least 66-2/3% of the sum of (w) the aggregate  principal  amount
     of the  Advances  outstanding  at such time,  (x) the  aggregate  Available
     Amount of all Letters of Credit outstanding at such time, (y) the aggregate
     unused  Commitments under the Term A and Term B Facilities at such time and
     (z)  the  aggregate  Unused  Working  Capital  Commitments  at  such  time;
     provided,  however, that if any Lender shall be a Defaulting Lender at such
     time, there shall be excluded from the determination of Required Lenders at
     such time (A) the aggregate  principal amount of the Advances owing to such
     Lender (in its capacity as a Lender) and outstanding at such time, (B) such
     Lender's Pro Rata Share of the aggregate Available Amount of all Letters of
     Credit  issued  by  such  Lender  and  outstanding  at such  time,  (C) the
     aggregate  unused Term A Commitments  and Term B Commitments of such Lender
     at such time and (D) the Unused Working  Capital  Commitment of such Lender
     at such time.  For purposes of this  definition,  the  aggregate  principal
     amount of Swing Line Advances owing to the Swing Line Bank and of Letter of
     Credit Advances owing to the Issuing Bank and the Available  Amount of each
     Letter of Credit  shall be  considered  to be owed to the  Working  Capital
     Lenders  ratably  in  accordance  with  their  respective  Working  Capital
     Commitments.

          "Responsible  Officer"  means any  officer of any Loan Party or any of
     its Subsidiaries.

          "Secured  Obligations"  has  the  meaning  specified  in the  Security
     Agreement.

          "Secured Parties" means the Administrative  Agent, the Lender Parties,
     and the Hedge Banks and the other  Persons the  Obligations  owing to which
     are or are purported to be secured by the Collateral under the terms of the
     Collateral Documents.

          "Securities   Purchase  Agreements"  means  each  Securities  Purchase
     Agreement dated July __, 1996 between the Surviving Corporation,  PSC and a
     purchaser of the  Subordinated  Notes,  pursuant to which the  Subordinated
     Notes are issued.

          "Security Agreement" has the meaning specified in Section 3.01(l)(ix).

          "Seller  Note" means the  promissory  note dated July __, 1996 made by
     PSC Acquisition to the Company.

          "Senior Debt" means Debt incurred by the Borrower pursuant to the Loan
     Documents and the Hedge Agreements.

          "Single  Employer  Plan" means a single  employer  plan, as defined in
     Section  4001(a)(15) of ERISA,  that (a) is maintained for employees of any
     Loan Party or any ERISA Affiliate and no Person other than the Loan Parties
     and the ERISA  Affiliates or (b) was so maintained  and in respect of which
     any Loan Party or any ERISA  Affiliate  could have liability  under Section
     4069 of ERISA in the event such plan has been or were to be terminated.

<PAGE>


          "Solvent"  and  "Solvency"  mean,  with  respect  to any  Person  on a
     particular  date,  that on such date (a) the fair value of the  property of
     such Person is greater  than the total  amount of  liabilities,  including,
     without limitation, contingent liabilities, of such Person, (b) the present
     fair salable value of the assets of such Person is not less than the amount
     that will be required to pay the  probable  liability of such Person on its
     debts as they become absolute and matured,  (c) such Person does not intend
     to, and does not believe that it will,  incur debts or  liabilities  beyond
     such Person's  ability to pay such debts and liabilities as they mature and
     (d) such  Person is not engaged in business  or a  transaction,  and is not
     about to engage in  business  or a  transaction,  for which  such  Person's
     property would  constitute an  unreasonably  small  capital.  The amount of
     contingent liabilities at any time shall be computed as the amount that, in
     the  light  of all the  facts  and  circumstances  existing  at such  time,
     represents  the amount that can  reasonably be expected to become an actual
     or matured liability.

          "SP Holdings" has the meaning specified in the Preliminary Statements.

          "Standby Letter of Credit" means any Letter of Credit issued under the
     Letter of Credit Facility, other than a Trade Letter of Credit.

          "Subordinated Debt" means the Subordinated Notes and any other Debt of
     the Borrower that is  subordinated to the Obligations of the Borrower under
     the Loan  Documents on, and that otherwise  contains,  terms and conditions
     reasonably satisfactory to the Required Lenders.

          "Subordinated Debt Documents" means the Securities Purchase Agreements
     and all other  agreements,  indentures  and  instruments  pursuant to which
     Subordinated Debt is issued.

          "Subordinated  Notes" means the subordinated  notes of the Borrower in
     an  aggregate  principal  amount  of  $30,000,000  issued  pursuant  to the
     Securities Purchase Agreements.

          "Subsidiary" of any Person means any corporation,  partnership,  joint
     venture,  limited liability company, trust or estate of which (or in which)
     more  than 50% of (a) the  issued  and  outstanding  capital  stock  having
     ordinary voting power to elect a majority of the Board of Directors of such
     corporation (irrespective of whether at the time capital stock of any other
     class or classes of such corporation  shall or might have voting power upon
     the  occurrence  of any  contingency),  (b) the  interest in the capital or
     profits of such partnership,  joint venture or limited liability company or
     (c) the beneficial interest in such trust or estate is at the time directly
     or indirectly owned or controlled by such Person, by such Person and one or
     more of its other  Subsidiaries  or by one or more of such  Person's  other
     Subsidiaries.

          "Subsidiary  Guarantors"  means each direct or indirect  Subsidiary of
     PSC (other than any Foreign Subsidiary).

          "Subsidiary Guaranty" has the meaning specified Section 3.01(l)(xii).

          "Surviving  Corporation" has the meaning  specified in the Preliminary
     Statements.
<PAGE>

          "Surviving Debt" has the meaning specified in Section 3.01(e).

          "Swing Line Advance"  means an advance made by (a) the Swing Line Bank
     pursuant to Section  2.01(d) or (b) any Working  Capital Lender pursuant to
     Section 2.02(b).

          "Swing Line Bank" means Fleet.

          "Swing Line  Borrowing"  means a borrowing  consisting of a Swing Line
     Advance made by the Swing Line Bank.

          "Swing Line Facility" has the meaning specified in Section 2.01(d).

          "Tax Certificate" has the meaning specified in Section 5.03(p).

          "Taxes" has the meaning specified in Section 2.12(a).

          "Term A Advance" has the meaning specified in Section 2.01(a).

          "Term A Borrowing" means a borrowing consisting of simultaneous Term A
     Advances of the same Type made by the Term A Lenders.

          "Term A  Commitment"  means,  with respect to any Term A Lender at any
     time, the amount set forth opposite such Lender's name on Schedule I hereto
     under the caption "Term A  Commitment"  or, if such Lender has entered into
     one or more Assignments and  Acceptances,  set forth for such Lender in the
     Register maintained by the Administrative Agent pursuant to Section 8.07(d)
     as such Lender's "Term A  Commitment,"  as such amount may be reduced at or
     prior to such time pursuant to Section 2.05.

          "Term A Facility"  means,  at any time,  the  aggregate  amount of the
     Term A Lenders' Term Commitments at such time.

          "Term A Lender" means any Lender that has a Term A Commitment.

          "Term A Note" means a promissory  note of the Borrower  payable to the
     order of any  Term A  Lender,  in  substantially  the  form of  Exhibit A-1
     hereto,  evidencing  the  indebtedness  of  the  Borrower  to  such  Lender
     resulting from the Term A Advance made by such Lender.

          "Term B Advance" has the meaning specified in Section 2.01(b).

          "Term B Borrowing" means a borrowing consisting of simultaneous Term B
     Advances of the same Type made by the Term B Lenders.

          "Term B  Commitment"  means,  with respect to any Term B Lender at any
     time, the amount set forth opposite such Lender's name on Schedule I hereto
     under the caption "Term B  Commitment"  or, if such Lender has entered into
     one or more Assignments and Acceptances
<PAGE>

     set forth for such Lender in the Register  maintained by the Administrative
     Agent pursuant to Section  8.07(d) as such Lender's "Term B Commitment," as
     such  amount may be reduced  at or prior to such time  pursuant  to Section
     2.04.

          "Term B Facility" means, at any time, the aggregate amount of the Term
     B Lenders' Term B Commitments at such time.

          "Term B Lender" means any Lender that has a Term B Commitment.

          "Term B Note" means a promissory  note of the Borrower  payable to the
     order of any Term B  Lender,  in  substantially  the  form of  Exhibit  A-2
     hereto,  evidencing  the  indebtedness  of  the  Borrower  to  such  Lender
     resulting from the Term B Advance made by such Lender.

          "Term Facilities" means the Term A Facility and the Term B Facility.

          "Termination Date" means the earlier of December 31, 2002 and the date
     of termination in whole of the Term A Commitments,  the Term B Commitments,
     the  Letter of  Credit  Commitments  and the  Working  Capital  Commitments
     pursuant to Section 2.05 or 6.01.

          "Total  Debt Ratio"  means,  at any date,  the ratio of the  aggregate
     amount  of Debt of PSC and its  Subsidiaries  on the  last  day of the most
     recently  completed  fiscal quarter of PSC to  Consolidated  EBITDA for the
     most recently  completed four fiscal  quarters of PSC;  provided,  however,
     that if such four fiscal quarter  period  includes any or all of the fiscal
     quarters ending on September 30, 1995, December 31, 1995, March 31, 1996 or
     June 30, 1996,  Consolidated  EBITDA shall be  calculated  by using the Pro
     Forma  EBITDA  for each such  fiscal  quarter in such four  fiscal  quarter
     period;  provided,  further,  that for purposes  solely of calculating  the
     aggregate amount of Debt outstanding, the Working Capital Advances shall be
     deemed to be  outstanding  in an  aggregate  principal  amount equal to the
     average  principal  amount  outstanding  over the  previous two full fiscal
     quarters.

          "Trade  Letter of Credit"  means any  Letter of Credit  that is issued
     under the  Letter of Credit  Facility  for the  benefit  of a  supplier  of
     Inventory to the Borrower or any of its  Subsidiaries to effect payment for
     such  Inventory,   the  conditions  to  drawing  under  which  include  the
     presentation  to the Issuing Bank of negotiable  bills of lading,  invoices
     and related documents  sufficient,  in the judgment of the Issuing Bank, to
     create  a  valid  and  perfected  lien  on or  security  interest  in  such
     Inventory,  bills of lading, invoices and related documents in favor of the
     Issuing Bank.

          "Transaction"  means  the  Acquisition,  the  Merger,  the  Securities
     Purchase   Agreements   and  the  Loan   Documents  and  the   transactions
     contemplated thereby.

          "Transition  Services  Agreement"  has the  meaning  specified  in the
     Purchase Agreement.

          "TxCom" means T.X.C.O.M., S.A., a French corporation.

<PAGE>


          "TxCom Agreement" has the meaning specified in the Purchase Agreement.

          "Type" refers to the distinction  between Advances bearing interest at
     the Prime Rate and Advances bearing interest at the Eurodollar Rate.

          "Unused Working Capital Commitment" means, with respect to any Working
     Capital Lender at any time, (a) such Lender's Working Capital Commitment at
     such time minus (b) the sum of (i) the  aggregate  principal  amount of all
     Working Capital Advances, Swing Line Advances and Letter of Credit Advances
     made by such Lender (in its capacity as a Lender) and  outstanding  at such
     time, plus (ii) such Lender's Pro Rata Share of (A) the aggregate Available
     Amount of all Letters of Credit outstanding at such time, (B) the aggregate
     principal  amount of all Letter of Credit Advances made by the Issuing Bank
     pursuant  to  Section 2.03(c)  and  outstanding  at such  time  and (C) the
     aggregate  principal  amount of all Swing Line  Advances  made by the Swing
     Line Bank pursuant to Section 2.01(d) and outstanding at such time.

          "Voting  Stock"  means  capital  stock  issued  by a  corporation,  or
     equivalent  interests  in any  other  Person,  the  holders  of  which  are
     ordinarily,  in the  absence  of  contingencies,  entitled  to vote for the
     election of directors  (or persons  performing  similar  functions) of such
     Person, even if the right so to vote has been suspended by the happening of
     such a contingency.

          "Warrants"  means the  warrants to purchase  975,000  shares of common
     stock of PSC issued pursuant to the Securities Purchase Agreements.

          "Welfare  Plan" means a welfare  plan,  as defined in Section  3(1) of
     ERISA,  that is maintained for employees of any Loan Party or in respect of
     which any Loan Party could have liability.

          "Withdrawal   Liability"  has  the  meaning  specified  in  Part I  of
     Subtitle E of Title IV of ERISA.

          "Working   Capital    Advance"   has   the   meaning    specified   in
     Section 2.01(c).

          "Working   Capital   Borrowing"   means  a  borrowing   consisting  of
     simultaneous  Working Capital Advances of the same Type made by the Working
     Capital Lenders.

          "Working  Capital  Commitment"  means,  with  respect  to any  Working
     Capital  Lender at any time,  the amount set forth  opposite  such Lender's
     name on Schedule I hereto under the caption  "Working  Capital  Commitment"
     or,  if  such  Lender  has  entered  into  one  or  more   Assignments  and
     Acceptances,  set forth for such Lender in the Register  maintained  by the
     Administrative  Agent pursuant to Section 8.07(d) as such Lender's "Working
     Capital Commitment," as such amount may be reduced at or prior to such time
     pursuant to Section 2.05.

<PAGE>

          "Working Capital Facility" means, at any time, the aggregate amount of
     the Working Capital Lenders' Working Capital Commitments at such time.

          "Working  Capital  Lender" means any Lender that has a Working Capital
     Commitment.

          "Working Capital Note" means a promissory note of the Borrower payable
     to the order of any Working Capital Lender,  in  substantially  the form of
     Exhibit A-3 hereto,  evidencing the aggregate  indebtedness of the Borrower
     to such Lender  resulting  from the Working  Capital  Advances made by such
     Lender.

          "Working Capital  Termination Date" means the earlier of June 30, 2001
     and the date of the  termination  in whole  of the  Term  Commitments,  the
     letter of Credit Commitments and the Working Capital  Commitments  pursuant
     to Section 2.05 or 6.01.

          SECTION 1.02.  Computation  of Time Periods.  In this Agreement in the
     computation of periods of time from a specified  date to a later  specified
     date,  the word "from"  means "from and  including"  and the words "to" and
     "until" each mean "to but excluding."

          SECTION 1.03.  Accounting Terms. All accounting terms not specifically
     defined  herein shall be construed in accordance  with  generally  accepted
     accounting  principles  consistent with those applied in the preparation of
     the financial statements referred to in Section 4.01(f)(ii) ("GAAP").


                                   ARTICLE II

                        AMOUNTS AND TERMS OF THE ADVANCES
                            AND THE LETTERS OF CREDIT

     SECTION  2.01.  The Advances.  (a) The Term A Advances.  Each Term A Lender
severally agrees,  on the terms and conditions  hereinafter set forth, to make a
single  advance (a "Term A Advance")  to the Borrower on any Business Day during
the period from the date  hereof  until July 30, 1996 in an amount not to exceed
such Lender's Term A Commitment at such time. The Term A Borrowing shall consist
of Term A Advances made  simultaneously  by the Term A Lenders ratably according
to their Term A Commitments.  Amounts  borrowed  under this Section  2.01(a) and
repaid or prepaid may not be reborrowed.

     (b) The Term B Advances.  Each Term B Lender severally agrees, on the terms
and  conditions  hereinafter  set  forth,  to make a single  advance  (a "Term B
Advance")  to the  Borrower on any  Business Day during the period from the date
hereof  until July 30,  1996 in an amount  not to exceed  such  Lender's  Term B
Commitment at such time.  The Term B Borrowing  shall consist of Term B Advances
made  simultaneously  by the Term B Lenders  ratably  according  to their Term B
Commitments.  Amounts  borrowed under this Section 2.01(b) and repaid or prepaid
may not be reborrowed.
<PAGE>

     (c) The Working Capital  Advances.  Each Working  Capital Lender  severally
agrees,  on the terms and  conditions  hereinafter  set forth,  to make advances
(each a "Working  Capital  Advance")  to the  Borrower  from time to time on any
Business  Day during the period from the date hereof  until the Working  Capital
Termination  Date in an amount for each such Advance not to exceed such Lender's
Unused Working Capital  Commitment at such time. Each Working Capital  Borrowing
shall be in an  aggregate  amount  of  $1,000,000  or an  integral  multiple  of
$100,000 in excess  thereof  (other than a Borrowing the proceeds of which shall
be used  solely to repay or prepay in full  outstanding  Swing Line  Advances or
outstanding  Letter of Credit  Advances)  and shall  consist of Working  Capital
Advances made simultaneously by the Working Capital Lenders ratably according to
their Working  Capital  Commitments.  Within the limits of each Working  Capital
Lender's  Unused  Working  Capital  Commitment in effect from time to time,  the
Borrower  may borrow  under this  Section  2.01(c),  prepay  pursuant to Section
2.06(a) and reborrow under this Section 2.01(c).

     (d) The Swing Line  Advances.  The Borrower may request the Swing Line Bank
to make, and the Swing Line Bank may, if in its sole  discretion it elects to do
so, make, on the terms and conditions hereinafter set forth, Swing Line Advances
to the Borrower from time to time on any Business Day during the period from the
date  hereof  until the Working  Capital  Termination  Date (i) in an  aggregate
amount  not to  exceed  at any time  outstanding  $5,000,000  (the  "Swing  Line
Facility")  and (ii) in an amount  for each such  Swing  Line  Borrowing  not to
exceed the aggregate of the Unused  Working  Capital  Commitments of the Working
Capital  Lenders  at such  time.  No Swing  Line  Advance  shall be used for the
purpose of funding the  payment of  principal  of any other Swing Line  Advance.
Each  Swing  Line  Borrowing  shall be made as a Base Rate  Advance.  Within the
limits of the Swing Line  Facility  and within the limits  referred to in clause
(ii) above,  so long as the Swing Line Bank, in its sole  discretion,  elects to
make Swing Line  Advances,  the Borrower may borrow under this Section  2.01(d),
repay  pursuant to Section  2.04(d) or prepay  pursuant  to Section  2.06(a) and
reborrow under this Section 2.01(d).

     (e) Letters of Credit. The Issuing Bank agrees, on the terms and conditions
hereinafter  set forth, to issue letters of credit (the "Letters of Credit") for
the account of the  Borrower  from time to time on any  Business  Day during the
period from the date hereof until 60 days before the Working Capital Termination
Date (i) in an  aggregate  Available  Amount  for all  Letters  of Credit not to
exceed at any time the Issuing  Bank's Letter of Credit  Commitment at such time
and (ii) in an Available  Amount for each such Letter of Credit not to exceed an
amount equal to the Unused Working  Capital  Commitments of the Working  Capital
Lenders  at such  time.  No Letter  of  Credit  shall  have an  expiration  date
(including  all rights of the Borrower or the  beneficiary  to require  renewal)
later than the earlier of 60 days before the Working  Capital  Termination  Date
and (A) in the case of a Standby  Letter of  Credit  one year  after the date of
issuance  thereof,  but may by its terms be  renewable  annually  upon notice (a
"Notice of Renewal") given to the Issuing Bank and the  Administrative  Agent on
or prior to any date for  notice of renewal  set forth in such  Letter of Credit
but in any event at least three  Business Days prior to the date of the proposed
renewal of such Standby Letter of Credit and upon  fulfillment of the applicable
conditions  set forth in Article III unless such  Issuing  Bank has notified the
Borrower (with a copy to the  Administrative  Agent) on or prior to the date for
notice of  termination  set forth in such  Letter of Credit  but in any event at
least 30 Business  Days prior to the date of  automatic  renewal of its election
not to renew such  Standby  Letter of Credit (a "Notice  of  Termination"))  and

<PAGE>

(B) in the case of a Trade Letter of Credit, 180 days after the date of issuance
thereof;  provided  that the terms of each  Standby  Letter  of  Credit  that is
automatically  renewable annually shall (x) require the Issuing Bank that issued
such  Standby  Letter of Credit to give the  beneficiary  named in such  Standby
Letter  of  Credit  notice  of  any  Notice  of  Termination,  (y)  permit  such
beneficiary,  upon receipt of such notice,  to draw under such Standby Letter of
Credit prior to the date such Standby Letter of Credit otherwise would have been
automatically  renewed  and (z) not permit the  expiration  date  (after  giving
effect  to any  renewal)  of such  Standby  Letter  of Credit in any event to be
extended  to a date later than 60 days before the  Working  Capital  Termination
Date.  If either a Notice of Renewal is not given by the Borrower or a Notice of
Termination is given by the Issuing Bank pursuant to the  immediately  preceding
sentence,  such  Standby  Letter of Credit  shall expire on the date on which it
otherwise would have been automatically renewed; provided, however, that even in
the  absence  of  receipt of a Notice of  Renewal  the  Issuing  Bank may in its
discretion, unless instructed to the contrary by the Administrative Agent or the
Borrower,  deem that a Notice of Renewal had been timely  delivered  and in such
case,  a Notice of  Renewal  shall be deemed to have been so  delivered  for all
purposes  under  this  Agreement.  Within  the  limits  of the  Letter of Credit
Facility,  and subject to the limits referred to above, the Borrower may request
the issuance of Letters of Credit under this  Section 2.01(e),  repay any Letter
of  Credit   Advances   resulting   from   drawings   thereunder   pursuant   to
Section 2.03(c)  and request the issuance of additional  Letters of Credit under
this Section 2.01(e).

     SECTION  2.02.  Making the  Advances.  (a) Except as otherwise  provided in
Section 2.02(b) or 2.03, each Borrowing shall be made on notice, given not later
than 11:00 A.M. (Boston,  Massachusetts time) on the third Business Day prior to
the date of the  proposed  Borrowing  in the case of a Borrowing  consisting  of
Eurodollar  Rate  Advances,  or the first  Business Day prior to the date of the
proposed Borrowing in the case of a Borrowing consisting of Prime Rate Advances,
by  the  Borrower  to  the  Administrative  Agent,  which  shall  give  to  each
Appropriate  Lender  prompt  notice  thereof by telex or  telecopier.  Each such
notice of a Borrowing (a "Notice of Borrowing") shall be by telephone, confirmed
immediately in writing,  or telex or telecopier,  in  substantially  the form of
Exhibit B hereto,  specifying  therein the requested (i) date of such Borrowing,
(ii) Facility under which such  Borrowing is to be made,  (iii) Type of Advances
comprising  such Borrowing,  (iv) aggregate  amount of such Borrowing and (v) in
the case of a Borrowing consisting of Eurodollar Rate Advances, initial Interest
Period for each such Advance.  Each Appropriate Lender shall,  before 11:00 A.M.
(Rochester, New York time) on the date of such Borrowing, make available for the
account of its  Applicable  Lending  Office to the  Administrative  Agent at the
Administrative Agent's Account, in same day funds, such Lender's ratable portion
of such  Borrowing  in  accordance  with the  respective  Commitments  under the
applicable Facility of such Lender and the other Appropriate Lenders.  After the
Administrative  Agent's  receipt  of such  funds  and  upon  fulfillment  of the
applicable  conditions set forth in Article III,  the Administrative  Agent will
make such funds  available to the Borrower by crediting the Borrower's  Account;
provided,  however,  that,  in the case of any Working  Capital  Borrowing,  the
Administrative  Agent  shall  first make a portion  of such  funds  equal to the
aggregate  principal  amount of any Swing  Line  Advances  and  Letter of Credit
Advances  made by the Swing Line Bank or the Issuing  Bank,  as the case may be,
and by any other  Working  Capital  Lender and  outstanding  on the date of such
Working Capital Borrowing, plus interest accrued and unpaid thereon to and as of
such date, available to the Swing Line Bank or the Issuing Bank, as the case may
be, and such other  Working  Capital  Lenders for  repayment  of such Swing Line
Advances and Letter of Credit Advances.
<PAGE>

     (b) Each Swing Line Borrowing shall be made on notice, given not later than
11:00 A.M.  (Rochester,  New York time) on the date of the  proposed  Swing Line
Borrowing,  by the Borrower to the Swing Line Bank and the Administrative Agent.
Each such notice of a Swing Line Borrowing (a "Notice of Swing Line  Borrowing")
shall be by telephone, confirmed immediately in writing, or telex or telecopier,
specifying therein the requested (i) date of such Borrowing, (ii) amount of such
Borrowing and (iii) maturity of such Borrowing (which maturity shall be no later
than the seventh day after the  requested  date of such  Borrowing).  If, in its
sole discretion,  it elects to make the requested Swing Line Advance,  the Swing
Line Bank will make the amount thereof available to the Administrative  Agent at
the Administrative  Agent's Account, in same day funds. After the Administrative
Agent's receipt of such funds and upon fulfillment of the applicable  conditions
set  forth in  Article III,  the  Administrative  Agent  will  make  such  funds
available to the  Borrower by crediting  the  Borrower's  Account.  Upon written
demand by the Swing Line Bank, with a copy of such demand to the  Administrative
Agent,  each other  Working  Capital  Lender shall  purchase from the Swing Line
Bank,  and the Swing Line Bank shall sell and assign to each such other  Working
Capital  Lender,  such other Lender's Pro Rata Share of such  outstanding  Swing
Line Advance as of the date of such demand,  by making available for the account
of its Applicable Lending Office to the Administrative  Agent for the account of
the Swing Line Bank, by deposit to the Administrative  Agent's Account,  in same
day funds, an amount equal to the portion of the outstanding principal amount of
such Swing Line  Advance to be purchased  by such  Lender.  The Borrower  hereby
agrees to each such sale and  assignment.  Each Working Capital Lender agrees to
purchase  its Pro Rata Share of an  outstanding  Swing  Line  Advance on (i) the
Business Day on which demand  therefor is made by the Swing Line Bank,  provided
that notice of such demand is given not later than  11:00 A.M.  (Rochester,  New
York time) on such Business Day or (ii) the first  Business Day next  succeeding
such  demand if notice of such  demand is given  after such time.  Upon any such
assignment  by the  Swing  Line Bank to any other  Working  Capital  Lender of a
portion of a Swing Line Advance,  the Swing Line Bank represents and warrants to
such other Lender that the Swing Line Bank is the legal and beneficial  owner of
such  interest  being  assigned  by it,  but  makes no other  representation  or
warranty and assumes no responsibility  with respect to such Swing Line Advance,
the Loan  Documents  or any Loan  Party.  If and to the extent  that any Working
Capital  Lender  shall not have so made the amount of such  Swing  Line  Advance
available to the Administrative Agent, such Working Capital Lender agrees to pay
to the  Administrative  Agent  forthwith  on demand  such amount  together  with
interest  thereon,  for each day from the date of demand by the Swing  Line Bank
until the date such amount is paid to the  Administrative  Agent, at the Federal
Funds Rate. If such Lender shall pay to the Administrative Agent such amount for
the account of the Swing Line Bank on any Business  Day,  such amount so paid in
respect of principal  shall  constitute a Swing Line Advance made by such Lender
on  such  Business  Day for  purposes  of this  Agreement,  and the  outstanding
principal  amount of the Swing Line Advance made by the Swing Line Bank shall be
reduced by such amount on such Business Day.

     (c)  Anything  in  subsection (a)  above to the  contrary  notwithstanding,
(i) the  Borrower  may not  select  Eurodollar  Rate  Advances  for the  initial
Borrowing  hereunder  or for  any  Borrowing  if the  aggregate  amount  of such
Borrowing  is less  than  $1,000,000  or if the  obligation  of the  Appropriate
Lenders to make  Eurodollar  Rate Advances  shall then be suspended  pursuant to
Section 2.09 or Section 2.10 and (ii) the Term A Advances may not be outstanding
as part of more  than 5  separate  Borrowings,  the Term B  Advances  may not be

<PAGE>

outstanding as part of more than 5 separate  Borrowings and the Working  Capital
Advances  made on any  date  may  not be  outstanding  as  part of more  than 10
separate Borrowings.

     (d) Each Notice of Borrowing  and Notice of Swing Line  Borrowing  shall be
irrevocable  and binding on the Borrower.  In the case of any Borrowing that the
related  Notice of Borrowing  specifies is to be  comprised of  Eurodollar  Rate
Advances, the Borrower shall indemnify each Appropriate Lender against any loss,
cost or expense incurred by such Lender as a result of any failure to fulfill on
or before the date  specified in such Notice of Borrowing for such Borrowing the
applicable  conditions set forth in Article III, including,  without limitation,
any loss (including loss of anticipated  profits),  cost or expense  incurred by
reason of the liquidation or reemployment of deposits or other funds acquired by
such  Lender  to fund  the  Advance  to be made by such  Lender  as part of such
Borrowing  when such Advance,  as a result of such failure,  is not made on such
date.

     (e) Unless the  Administrative  Agent  shall have  received  notice from an
Appropriate  Lender prior to the date of any  Borrowing  under a Facility  under
which such Lender has a Commitment  that such Lender will not make  available to
the  Administrative  Agent such Lender's ratable portion of such Borrowing,  the
Administrative Agent may assume that such Lender has made such portion available
to the  Administrative  Agent on the date of such  Borrowing in accordance  with
subsection (a) or (b) of this Section 2.02 and the Administrative  Agent may, in
reliance  upon such  assumption,  make  available to the Borrower on such date a
corresponding  amount.  If and to the extent that such Lender  shall not have so
made such ratable portion available to the Administrative Agent, such Lender and
the  Borrower  severally  agree  to  repay  or pay to the  Administrative  Agent
forthwith on demand such corresponding  amount and to pay interest thereon,  for
each day from the date such amount is made  available to the Borrower  until the
date such amount is repaid or paid to the  Administrative  Agent,  at (i) in the
case of the Borrower,  the interest  rate  applicable at such time under Section
2.07 to Advances  comprising such Borrowing and (ii) in the case of such Lender,
the Federal  Funds Rate.  If such Lender shall pay to the  Administrative  Agent
such  corresponding  amount,  such amount so paid shall constitute such Lender's
Advance as part of such Borrowing for all purposes.

     (f) The  failure of any Lender to make the Advance to be made by it as part
of any Borrowing shall not relieve any other Lender of its  obligation,  if any,
hereunder to make its Advance on the date of such Borrowing, but no Lender shall
be  responsible  for the  failure of any other  Lender to make the Advance to be
made by such other Lender on the date of any Borrowing.

     SECTION 2.03.  Issuance of and Drawings and Reimbursement  Under Letters of
Credit.  (a) Request for  Issuance.  Each Letter of Credit  shall be issued upon
notice, given not later than 11:00 A.M. (Rochester,  New York time) on the fifth
Business  Day  prior to the date of the  proposed  issuance  of such  Letter  of
Credit,  by  the  Borrower  to  the  Issuing  Bank,  which  shall  give  to  the
Administrative  Agent and each Working  Capital  Lender prompt notice thereof by
telex or  telecopier.  Each  such  notice of  issuance  of a Letter of Credit (a
"Notice of Issuance") shall be by telephone,  confirmed  immediately in writing,
or  telex or  telecopier,  specifying  therein  the  requested  (A) date of such
issuance (which shall be a Business Day), (B) Available Amount of such Letter of
Credit, (C) expiration date of such Letter of Credit, (D)name and address of the
beneficiary of such Letter of Credit and (E) form of such Letter of Credit,  and
shall be accompanied by such application and agreement for letter of credit as

<PAGE>

the Issuing  Bank may specify to the Borrower  for use in  connection  with such
requested  Letter of Credit (a "Letter of Credit  Agreement").  If the requested
form of such  Letter of Credit is  acceptable  to the  Issuing  Bank in its sole
discretion, the Issuing Bank will, upon fulfillment of the applicable conditions
set forth in Article III,  make such Letter of Credit  available to the Borrower
at its office  referred  to in  Section 8.02  or as  otherwise  agreed  with the
Borrower in connection  with such issuance.  In the event and to the extent that
the  provisions  of any  Letter of Credit  Agreement  shall  conflict  with this
Agreement, the provisions of this Agreement shall govern.

     (b) Letter of Credit  Reports.  The Issuing  Bank shall  furnish (A) to the
Administrative  Agent on the first  Business  Day of each week a written  report
summarizing issuance and expiration dates of Letters of Credit issued during the
previous week and drawings during such week under all Letters of Credit,  (B) to
each Working  Capital  Lender on the first  Business Day of each month a written
report  summarizing  issuance and  expiration  dates of Letters of Credit issued
during the preceding  month and drawings  during such month under all Letters of
Credit and (C) to the  Administrative  Agent and each Working  Capital Lender on
the first  Business Day of each calendar  quarter a written report setting forth
the average daily  aggregate  Available  Amount  during the  preceding  calendar
quarter of all Letters of Credit.

     (c) Drawing and  Reimbursement.  The payment by the Issuing Bank of a draft
drawn  under any Letter of Credit  shall  constitute  for all  purposes  of this
Agreement  the making by the Issuing Bank of a Letter of Credit  Advance,  which
shall be a Prime Rate Advance,  in the amount of such draft. Upon written demand
by the Issuing  Bank,  with a copy of such demand to the  Administrative  Agent,
each  Working  Capital  Lender shall  purchase  from the Issuing  Bank,  and the
Issuing Bank shall sell and assign to each such  Working  Capital  Lender,  such
Lender's Pro Rata Share of such  outstanding  Letter of Credit Advance as of the
date of such  purchase,  by making  available for the account of its  Applicable
Lending Office to the Administrative  Agent for the account of the Issuing Bank,
by deposit to the Administrative  Agent's Account,  in same day funds, an amount
equal to the  portion  of the  outstanding  principal  amount of such  Letter of
Credit Advance to be purchased by such Lender.  Promptly after receipt  thereof,
the  Administrative  Agent shall  transfer such funds to the Issuing  Bank.  The
Borrower  hereby agrees to each such sale and  assignment.  Each Working Capital
Lender agrees to purchase its Pro Rata Share of an outstanding  Letter of Credit
Advance on (i) the Business Day on which demand  therefor is made by the Issuing
Bank,  provided  notice  of such  demand  is given not  later  than  11:00  A.M.
(Rochester,  New York time) on such Business Day or (ii) the first  Business Day
next  succeeding  such demand if notice of such demand is given after such time.
Upon any such assignment by the Issuing Bank to any other Working Capital Lender
of a portion of a Letter of Credit  Advance,  the Issuing  Bank  represents  and
warrants to such other Lender that the Issuing Bank is the legal and  beneficial
owner of such interest  being  assigned by it, free and clear of any liens,  but
makes no other  representation  or warranty and assumes no  responsibility  with
respect to such Letter of Credit Advance,  the Loan Documents or any Loan Party.
If and to the extent that any Working  Capital Lender shall not have so made the
amount of such Letter of Credit Advance available to the  Administrative  Agent,
such Working Capital Lender agrees to pay to the Administrative  Agent forthwith
on demand such amount together with interest thereon, for each day from the date
of  demand  by the  Issuing  Bank  until  the date  such  amount  is paid to the
Administrative  Agent,  at the Federal Funds Rate for its account or the account

<PAGE>

of  the  Issuing  Bank,  as  applicable.   If  such  Lender  shall  pay  to  the
Administrative  Agent such  amount for the  account of the  Issuing  Bank on any
Business  Day,  such amount so paid in respect of principal  shall  constitute a
Letter of Credit  Advance made by such Lender on such  Business Day for purposes
of this Agreement,  and the outstanding principal amount of the Letter of Credit
Advance  made by the  Issuing  Bank  shall be  reduced  by such  amount  on such
Business Day.

     (d) Failure to Make Letter of Credit Advances. The failure of any Lender to
make the  Letter of Credit  Advance  to be made by it on the date  specified  in
Section  2.03(c) shall not relieve any other Lender of its obligation  hereunder
to make its  Letter of  Credit  Advance  on such  date,  but no Lender  shall be
responsible  for the  failure  of any other  Lender to make the Letter of Credit
Advance to be made by such other Lender on such date.

     SECTION  2.04.  Repayment of Advances.  (a) Term A  Advances.  The Borrower
shall repay to the  Administrative  Agent for the ratable  account of the Term A
Lenders the aggregate outstanding principal amount of the Term A Advances on the
following  dates in the amounts  indicated  (which amounts shall be reduced as a
result  of the  application  of  prepayments  in  accordance  with the  order of
priority set forth in Section 2.06):






Date                                                                    Amount
- - ----                                                                    ------
March 31, 1997 ........................................               $2,000,000
June 30, 1997 .........................................               $2,000,000
September 30, 1997 ....................................               $2,000,000
December 31, 1997 .....................................               $2,000,000
March 31, 1998 ........................................               $2,500,000
June 30, 1998 .........................................               $2,500,000
September 30, 1998 ....................................               $2,500,000
December 30, 1998 .....................................               $2,500,000
March 31, 1999 ........................................               $3,000,000
June 30, 1999 .........................................               $3,000,000
September 30, 1999 ....................................               $3,000,000
December 31, 1999 .....................................               $3,000,000
March 31, 2000 ........................................               $3,500,000
June 30, 2000 .........................................               $3,500,000
September 30, 2000 ....................................               $3,500,000
December 30, 2000 .....................................               $3,500,000
March 31, 2001 ........................................               $4,500,000
June 30, 2001 .........................................               $6,500,000

<PAGE>

provided,  however,  that the final principal installment shall be repaid on the
Working Capital Termination Date and in any event shall be in an amount equal to
the aggregate principal amount of the Term A Advances outstanding on such date.

     (b) Term B Advances.  The Borrower shall repay to the Administrative  Agent
for  the  ratable  account  of the  Term B  Lenders  the  aggregate  outstanding
principal  amount of the Term B Advances on the  following  dates in the amounts
indicated  (which  amounts  shall be reduced as a result of the  application  of
prepayments in accordance with the order of priority set forth in Section 2.06):

Date                                                                     Amount
- - ----                                                                     ------
March 31, 1997 ........................................               $  250,000
June 30, 1997 .........................................               $  250,000
September 30, 1997 ....................................               $  250,000
December 31, 1997 .....................................               $  250,000
March 31, 1998 ........................................               $  250,000
June 30, 1998 .........................................               $  250,000
September 30, 1998 ....................................               $  250,000
December 31, 1998 .....................................               $  250,000
March 31, 1999 ........................................               $  250,000
June 30, 1999 .........................................               $  250,000
September 30, 1999 ....................................               $  250,000
December 31, 1999 .....................................               $  250,000
March 31, 2000 ........................................               $  250,000
June 30, 2000 .........................................               $  250,000
September 30, 2000 ....................................               $  250,000
December 31, 2000 .....................................               $  250,000
March 31, 2001 ........................................               $2,625,000
June 30, 2001 .........................................               $2,625,000
September 30, 2001 ....................................               $2,625,000
December 31, 2001 .....................................               $2,625,000
March 31, 2002 ........................................               $2,625,000
June 30, 2002 .........................................               $2,625,000
September 30, 2002 ....................................               $2,625,000
December 31, 2002 .....................................               $2,625,000

<PAGE>

provided,  however,  that the final principal installment shall be repaid on the
Termination  Date and in any event shall be in an amount equal to the  aggregate
principal amount of the Term B Advances outstanding on such date.

     (c)  Working   Capital   Advances.   The   Borrower   shall  repay  to  the
Administrative  Agent for the ratable  account of the Working Capital Lenders on
the Working Capital Termination Date the aggregate  outstanding principal amount
of the Working Capital Advances then outstanding.

     (d) Swing Line  Advances.  The Borrower  shall repay to the  Administrative
Agent for the  account of each Swing  Line Bank and each other  Working  Capital
Lender that has made a Swing Line Advance the  outstanding  principal  amount of
each Swing Line Advance made by each of them on the earlier of the maturity date
specified in the applicable Notice of Swing Line Borrowing (which maturity shall
be no later than the seventh day after the requested date of such Borrowing) and
the Working Capital Termination Date.

     (e)  Letter  of  Credit  Advances.  (i) The  Borrower  shall  repay  to the
Administrative  Agent for the account of the Issuing Bank and each other Working
Capital Lender that has made a Letter of Credit Advance on the earlier of demand
and the Working Capital  Termination  Date the outstanding  principal  amount of
each Letter of Credit Advance made by each of them.

     (ii) The  Obligations of the Borrower under this  Agreement,  any Letter of
Credit Agreement and any other agreement or instrument relating to any Letter of
Credit shall be  unconditional  and  irrevocable,  and shall be paid strictly in
accordance with the terms of this Agreement, such Letter of Credit Agreement and
such other agreement or instrument under all circumstances,  including,  without
limitation, the following circumstances:

          (A) any lack of validity or enforceability  of any Loan Document,  any
     Letter of Credit Agreement,  any Letter of Credit or any other agreement or
     instrument relating thereto (all of the foregoing being, collectively,  the
     "L/C Related Documents");

          (B) any change in the time,  manner or place of payment  of, or in any
     other term of, all or any of the  Obligations of the Borrower in respect of
     any L/C Related Document or any other amendment or waiver of or any consent
     to departure from all or any of the L/C Related Documents;

          (C) the existence of any claim,  set-off,  defense or other right that
     the Borrower may have at any time against any beneficiary or any transferee
     of a Letter of Credit (or any Persons for whom any such  beneficiary or any
     such  transferee  may be  acting),  the Issuing  Bank or any other  Person,
     whether in connection with the transactions contemplated by the L/C Related
     Documents or any unrelated transaction;

<PAGE>

          (D) any statement or any other  document  presented  under a Letter of
     Credit proving to be forged,  fraudulent,  invalid or  insufficient  in any
     respect or any statement therein being untrue or inaccurate in any respect;
     or

          (E) any exchange, release or non-perfection of any Collateral or other
     collateral,  or any  release  or  amendment  or  waiver  of or  consent  to
     departure from the Guaranty or any other  guarantee,  for all or any of the
     Obligations of the Borrower in respect of the L/C Related Documents.

     SECTION 2.05.  Termination or Reduction of the  Commitments.  (a) Optional.
The  Borrower   may,  upon  at  least  three   Business   Days'  notice  to  the
Administrative  Agent,  terminate in whole or reduce in part the unused portions
of the Term A Commitments, the Term B Commitments, the Letter of Credit Facility
and the Unused Working Capital Commitments; provided, however, that each partial
reduction of a Facility  (i) shall be in an aggregate amount of $5,000,000 or an
integral multiple of $1,000,000 in excess thereof and (ii) shall be made ratably
among the Appropriate  Lenders in accordance with their Commitments with respect
to such Facility.

     (b) Mandatory. (i) On the date of the Term A Borrowing, after giving effect
to such Term A Borrowing,  and from time to time  thereafter upon each repayment
or prepayment of the Term A Advances,  the aggregate  Term A Commitments  of the
Term A Lenders shall be  automatically  and permanently  reduced,  on a pro rata
basis,  by an  amount  equal  to  the  amount  by  which  the  aggregate  Term A
Commitments  immediately  prior to such  reduction  exceed the aggregate  unpaid
principal amount of the Term A Advances then outstanding.

     (ii) On the date of the  Term B  Borrowing,  after  giving  effect  to such
Term B  Borrowing,  and from  time to time  thereafter  upon each  repayment  or
prepayment  of the Term B Advances,  the  aggregate  Term B  Commitments  of the
Term B Lenders shall be  automatically  and permanently  reduced,  on a pro rata
basis,  by an  amount  equal  to  the  amount  by  which  the  aggregate  Term B
Commitments  immediately  prior to such  reduction  exceed the aggregate  unpaid
principal amount of the Term B Advances then outstanding.

     (iii) On and after the date that all Term A  Advances  and Term B  Advances
have been repaid in full, the Working  Capital  Facility shall be  automatically
and permanently  reduced on each date on which prepayment thereof is required to
be made pursuant to Section 2.06(b)(i),  (ii) or (iii) in an amount equal to the
applicable  Reduction  Amount,  provided that each such reduction of the Working
Capital  Facility  shall be made ratably  among the Working  Capital  Lenders in
accordance with their Working Capital Commitments.

     (iv) The Letter of Credit  Facility shall be permanently  reduced from time
to time on the date of each  reduction  in the Working  Capital  Facility by the
amount, if any, by which the amount of the Letter of Credit Facility exceeds the
Working  Capital  Facility  after giving effect to such reduction of the Working
Capital Facility.

     SECTION 2.06.  Prepayments.  (a) Optional.  The Borrower may, upon at least
one Business  Day's notice in the case of Prime Rate Advances and three Business

<PAGE>

Days'  notice  in the case of  Eurodollar  Rate  Advances,  in each  case to the
Administrative Agent stating the proposed date and aggregate principal amount of
the  prepayment,  and if such  notice is given the  Borrower  shall,  prepay the
outstanding  aggregate  principal amount of the Advances  comprising part of the
same Borrowing in whole or ratably in part,  together with (i) accrued  interest
to the  date of such  prepayment  on the  aggregate  principal  amount  prepaid;
provided,  however,  that (x) each  partial  prepayment shall be in an aggregate
principal  amount of  $1,000,000  or an integral  multiple of $100,000 in excess
thereof and (y) no such  prepayment  of a Eurodollar  Rate Advance shall be made
other than on the last day of an Interest Period therefor.  Each such prepayment
of the Term  Facilities  shall be applied ratably to the Term A Facility and the
Term B Facility and to the principal repayment  installments of each of the Term
A Facility and Term B Facility in inverse order of maturity;  provided, however,
that if any of the  Lenders  under  either  the  Term A  Facility  or the Term B
Facility  elects  to  refuse  its  ratable  share  of any  such  prepayment,  in
accordance with the procedures  described in Section 2.06(c),  the ratable share
of such Lender shall be applied to the  Advances of the Lenders  under such Term
Facility and to the principal repayment installments thereof in inverse order of
maturity,  or if all Lenders in such Term Facility elect to refuse their ratable
share,  to the Advances of the Lenders  under the other Term Facility and to the
principal repayment installments thereof in inverse order of maturity.

     (b) Mandatory.  (i) The Borrower shall, on the fifth day following the date
the Lender  Parties have received or are required to have received  (pursuant to
Section  5.03(d))  the  audited  financials  of PSC for each  fiscal year of the
Borrower,  prepay an aggregate  principal amount of the Advances comprising part
of the same  Borrowings  equal to (x) if the Total Debt Ratio is 3.50:1 or more,
75% of Excess  Cash Flow for such  Fiscal  Year,  (y) if the Total Debt Ratio is
less than 3.50:1 but more than 2.49:1,  50%,  and (z) at all other times,  0% of
Excess Cash Flow for such fiscal  year.  Each such  prepayment  shall be applied
first  ratably  to the  Term A  Facility,  and the Term B  Facility,  and to the
installments  thereof in inverse  order of  maturity  and second to the  Working
Capital Facility as set forth in clause (vi) below.

     (ii) PSC and the  Borrower  shall,  on the date of  receipt of the Net Cash
Proceeds by any Loan Party or any of its Subsidiaries  from (A) the sale, lease,
transfer  or other  disposition  of any  assets of any Loan  Party or any of its
Subsidiaries  (other  than any sale,  lease,  transfer or other  disposition  of
assets  pursuant  to clause  (i) of  Section  5.02(e)),  (B) the  incurrence  or
issuance  by any Loan Party or any of its  Subsidiaries  of any Debt (other than
Debt incurred or issued  pursuant to clause  Section  5.02(b)),  (C) the sale or
issuance by any Loan Party (other than PSC) or any of the other  Subsidiaries of
any PSC capital  stock or other  ownership or profit  interest,  any  securities
convertible  into or exchangeable for capital stock or other ownership or profit
interest or any  warrants,  rights or options to acquire  capital stock or other
ownership or profit interest and (D) any  Extraordinary  Receipt  received by or
paid to or for the account of any Loan Party or any of its  Subsidiaries and not
otherwise  included  in  clause  (A),  (B) or (C)  above,  prepay  an  aggregate
principal amount of the Advances comprising part of the same Borrowings equal to
the  amount of such Net Cash  Proceeds.  Each such  prepayment  shall be applied
first,  ratably  to the  Term A  Facility  and the  Term B  Facility  and to the
installments  thereof in inverse  order of  maturity  and second to the  Working
Capital Facility as set forth in clause (vi) below.

<PAGE>

     (iii) PSC and the  Borrower  shall,  on the date of receipt of the Net Cash
Proceeds by any Loan Party or any of its Subsidiaries  from the sale or issuance
by  PSC of any  capital  stock  or  other  ownership  or  profit  interest,  any
securities convertible into or exchangeable for capital stock or other ownership
or profit interest, or any warrants,  rights or options to acquire capital stock
or other  ownership or profit  interest,  prepay an  aggregate  principal of the
Advances  comprising part of the same Borrowings  equal to (x) if the Total Debt
Ratio is 3.5:1 or more,  100% of the  amount  of such Net Cash  Proceeds  to the
extent,  and only to the extent,  that such Net Cash  Proceeds are  necessary to
reduce  the Total  Debt Ratio to less than 3.5:1 and (y) if the Total Debt Ratio
is less than 3.5:1, 0% of such Net Cash Proceeds.

     (iv)  The  Borrower  shall,  on each  Business  Day,  prepay  an  aggregate
principal  amount of the Working  Capital  Advances  comprising part of the same
Borrowings,  and the Letter of Credit Advances and the Swing Line Advances equal
to the amount by which (A) the sum of the aggregate  principal amount of (x) the
Working Capital Advances and (y) the Letter of Credit Advances and (z) the Swing
Line  Advances  then  outstanding  plus the  aggregate  Available  Amount of all
Letters of Credit then outstanding exceeds (B) the lesser of the Working Capital
Facility and the Borrowing Base on such Business Day.

     (v) The Borrower  shall,  on each Business  Day, pay to the  Administrative
Agent for deposit in the L/C Cash  Collateral  Account an amount  sufficient  to
cause the  aggregate  amount on deposit  in such  Account to equal the amount by
which the aggregate  Available  Amount of all Letters of Credit then outstanding
exceeds the Letter of Credit Facility on such Business Day.

     (vi)  Prepayments of the Working  Capital  Facility made pursuant to clause
(i),  (ii) or (iii)  above  shall be first  applied  to prepay  Letter of Credit
Advances then outstanding  until such Advances are paid in full,  second applied
to prepay Swing Line Advances then  outstanding  until such Advances are paid in
full,  third  applied  to  prepay  Working  Capital  Advances  then  outstanding
comprising part of the same Borrowings until such Advances are paid in full, and
fourth deposited in the L/C Cash Collateral  Account to cash  collateralize 100%
of the Available Amount of the Letters of Credit then  outstanding;  and, in the
case of prepayments of the Working Capital Facility  required pursuant to clause
(i) or (ii) above, the amount remaining (if any) after the prepayment in full of
the  Advances  then  outstanding  and the  100%  cash  collateralization  of the
aggregate  Available  Amount of Letters of Credit then  outstanding  (the sum of
such prepayment  amounts,  cash  collateralization  amounts and remaining amount
being  referred  to herein as the  "Reduction  Amount")  may be  retained by the
Borrower and the Working  Capital  Facility shall be permanently  reduced as set
forth in  Section  2.05(b)(iii).  Upon the  drawing  of any Letter of Credit for
which funds are on deposit in the L/C Cash Collateral Account,  such funds shall
be applied to reimburse  the Issuing  Bank or the Working  Capital  Lenders,  as
applicable.

     (vii) All prepayments under this subsection (b) shall be made together with
accrued interest to the date of such prepayment on the principal amount prepaid.

     (c)  Application  of  Prepayments  to the  Term A  Facility  and the Term B
Facility. Upon receipt of any amounts to be applied to the prepayment in respect
of the Term A Facility and the Term B Facility  pursuant to this  Section  2.06,

<PAGE>

the Administrative  Agent shall apply such amounts to the prepayment of the Term
A Advances and Term B Advance  ratably;  provided  however,  that if within five
Business Days of receiving notice from the Administrative Agent of a prepayment,
any Term A Lender or any Term B Lender notifies the Administrative Agent that it
elects to refuse to accept the  prepayment  of its Term A Advances or its Term B
Advances,  as the case may be, the Administrative  Agent shall apply the portion
of such  prepayment  that would have been  allocated  to the  repayment  of such
Lender's  Term A  Advances  or the Term B  Advances,  as the case may be, to the
prepayment of the Advances of the other Lenders under the same Term Facility and
to the principal repayment installments thereof in inverse order of maturity or,
if all Lenders under such Term  Facility  elect to refuse their ratable share of
such  prepayment,  to the Advances of the Lenders  under the other Term Facility
and  to the  principal  repayment  installments  thereof  in  inverse  order  of
maturity.  If any Term A Lender or Term B Lender  shall  not give  notice to the
Administrative  Agent within such five Business Day period,  the  Administrative
Agent shall assume that such Lender shall have accepted such prepayment.

     SECTION 2.07.  Interest.  (a) Scheduled  Interest.  The Borrower  shall pay
interest on the unpaid  principal  amount of each  Advance  owing to each Lender
from the date of such Advance until such principal amount shall be paid in full,
at the following rates per annum:

          (i) Prime Rate  Advances.  During  such  periods as such  Advance is a
     Prime Rate  Advance,  a rate per annum equal at all times to the sum of (A)
     the Prime Rate in effect from time to time plus (B) the  Applicable  Margin
     in effect from time to time,  payable in arrears monthly on the last day of
     each month  during  such  periods  and on the date such Prime Rate  Advance
     shall be Converted or paid in full.

          (ii) Eurodollar Rate Advances.  During such periods as such Advance is
     a Eurodollar Rate Advance,  a rate per annum equal at all times during each
     Interest Period for such Advance to the sum of (A) the  Eurodollar Rate for
     such  Interest  Period for such Advance plus (B) the  Applicable  Margin in
     effect on the first day of such Interest Period,  payable in arrears on the
     last  day of such  Interest  Period  and,  if such  Interest  Period  has a
     duration of more than three  months,  on each day that  occurs  during such
     Interest  Period  every three  months  from the first day of such  Interest
     Period and on the date such  Eurodollar  Rate Advance shall be Converted or
     paid in full.

     (b) Default  Interest.  Upon the occurrence and during the continuance of a
Default,  the Borrower shall pay interest on (i) the unpaid  principal amount of
each Advance owing to each Lender,  payable in arrears on the dates  referred to
in clause  (a)(i) or (a)(ii)  above and on demand,  at a rate per annum equal at
all times to 2% per annum  above the rate per annum  required to be paid on such
Advance  pursuant  to clause  (a)(i) or  (a)(ii)  above and (ii) to the  fullest
extent permitted by law, the amount of any interest, fee or other amount payable
hereunder  that is not paid when due,  from the date  such  amount  shall be due
until  such  amount  shall be paid in full,  payable in arrears on the date such
amount  shall be paid in full and on  demand,  at a rate per annum  equal at all
times to 2% per annum above the rate per annum  required to be paid, in the case
of interest,  on the Type of Advance on which such interest has accrued pursuant
to clause   (a)(i) or (a)(ii)  above,  and,  in all other  cases,  on Prime Rate
Advances pursuant to clause (a)(i) above.

<PAGE>

     (c)  Notice  of  Interest  Rate.  Promptly  after  receipt  of a Notice  of
Borrowing  pursuant  to Section  2.02(a),  the  Administrative  Agent shall give
notice to the Borrower and each  Appropriate  Lender of the applicable  interest
rate  determined  by the  Administrative  Agent for purposes of clause (a)(i) or
(ii).

     SECTION  2.08.  Fees.  (a)  Commitment  Fee. The Borrower  shall pay to the
Administrative  Agent for the account of the Lenders a commitment  fee, from the
date  hereof in the case of each  Initial  Lender  and from the  effective  date
specified in the Assignment and Acceptance  pursuant to which it became a Lender
in the case of each other Lender until the Termination Date,  payable in arrears
on the date of the initial Borrowing hereunder, thereafter quarterly on the last
Business Day of each March, June, September, and December,  commencing September
30,  1996,  and on the  Termination  Date,  at a rate  per  annum  equal  to the
Commitment   Fee  Percentage  on  the  average  daily  unused  portion  of  each
Appropriate  Lender's Term A Commitment  and Term B Commitment and on the sum of
the average daily Unused Working Capital  Commitment of such Lender plus its Pro
Rata Share of the average  daily  outstanding  Swing Line  Advances  during such
quarter; provided,  however, that any commitment fee accrued with respect to any
of the  Commitments  of a Defaulting  Lender during the period prior to the time
such  Lender  became a  Defaulting  Lender  and unpaid at such time shall not be
payable by the  Borrower so long as such  Lender  shall be a  Defaulting  Lender
except to the extent that such  commitment fee shall otherwise have been due and
payable  by the  Borrower  prior to such  time;  and  provided  further  that no
commitment fee shall accrue on any of the Commitments of a Defaulting  Lender so
long as such Lender shall be a Defaulting Lender.

     (b)  Letter  of  Credit  Fees,  Etc.  (i)  The  Borrower  shall  pay to the
Administrative   Agent  for  the  account  of  each  Working  Capital  Lender  a
commission, payable in arrears quarterly on the last Business Day of each March,
June, September and December, commencing September 30, 1996, and on the earliest
to occur of the full drawing expiration, termination or cancellation of any such
Letter of Credit and on the Termination Date, on such Lender's Pro-Rata Share of
the average daily aggregate  Available Amount during such quarter of all Letters
of  Credit  outstanding  from  time to time at the rate per  annum  equal to the
Applicable  Margin  then in effect for  Eurodollar  Advances  under the  Working
Capital Facility.

     (ii) The Borrower shall pay to the Issuing Bank, for its own account,  such
commissions,  issuance  fees,  fronting  fees,  transfer fees and other fees and
charges in  connection  with the  issuance or  administration  of each Letter of
Credit as the Borrower and the Issuing Bank shall agree.

     (c)   Administrative   Agent's  Fees.   The  Borrower   shall  pay  to  the
Administrative  Agent for its own account  such fees as may from time to time be
agreed between the Borrower and the Administrative Agent.

     SECTION 2.09. Conversion of Advances. (a) Optional. The Borrower may on any
Business  Day,  upon  notice  given to the  Administrative  Agent not later than
11:00 A.M.  (Rochester,  New York time) on the third  Business  Day prior to the
date of the proposed  Conversion and subject to the provisions of  Sections 2.07
and 2.10, Convert all or any portion of the Advances of one Type comprising the

<PAGE>

same  Borrowing  into Advances of the other Type;  provided,  however,  that any
Conversion  of Eurodollar  Rate Advances into Prime Rate Advances  shall be made
only on the last day of an Interest  Period for such  Eurodollar  Rate Advances,
any Conversion of Prime Rate Advances into  Eurodollar Rate Advances shall be in
an amount not less than the minimum  amount  specified  in  Section 2.02(c),  no
Conversion  of any  Advances  shall  result  in more  separate  Borrowings  than
permitted under  Section 2.02(c) and each Conversion of Advances comprising part
of the same  Borrowing  under  any  Facility  shall be made  ratably  among  the
Appropriate  Lenders in accordance with their  Commitments  under such Facility.
Each such notice of Conversion shall,  within the restrictions  specified above,
specify (i) the date of such Conversion,  (ii) the  Advances to be Converted and
(iii) if such Conversion is into  Eurodollar Rate Advances,  the duration of the
initial  Interest Period for such Advances.  Each notice of Conversion  shall be
irrevocable and binding on the Borrower.

     (b)  Mandatory.  (i) On the date on which the  aggregate  unpaid  principal
amount of Eurodollar Rate Advances comprising any Borrowing shall be reduced, by
payment or prepayment or otherwise, to less than $1,000,000, such Advances shall
automatically Convert into Prime Rate Advances.

     (ii) If the  Borrower  shall fail to select the  duration  of any  Interest
Period for any  Eurodollar  Rate  Advances  in  accordance  with the  provisions
contained  in  the  definition  of  "Interest   Period"  in  Section  1.01,  the
Administrative  Agent will forthwith so notify the Borrower and the  Appropriate
Lenders, whereupon each such Eurodollar Rate Advance will automatically,  on the
last day of the then existing  Interest  Period  therefor,  Convert into a Prime
Rate Advance.

     (iii) Upon the  occurrence and during the  continuance of any Default,  (x)
each  Eurodollar  Rate Advance will  automatically,  on the last day of the then
existing Interest Period therefor, Convert into a Prime Rate Advance and (y) the
obligation of the Lenders to make, or to Convert Advances into,  Eurodollar Rate
Advances shall be suspended.

     SECTION  2.10.  Increased  Costs,  Etc.  (a)  If,  due to  either  (i)  the
introduction  of or any change  (other than any change by way of  imposition  or
increase  of) reserve  requirements  included  in the  Eurodollar  Rate  Reserve
Percentage)  in or in the  interpretation  of any law or  regulation or (ii) the
compliance  with  any  guideline  or  request  from  any  central  bank or other
governmental  authority (whether or not having the force of law), there shall be
any  increase in the cost to any Lender  Party of agreeing to make or of making,
funding or  maintaining  Eurodollar  Rate Advances or of agreeing to issue or of
issuing or maintaining  Letters of Credit or of agreeing to make or of making or
maintaining  Letter of Credit  Advances  (excluding for purposes of this Section
2.10 any such  increased  costs  resulting  from (A) Taxes or Other Taxes (as to
which  Section 2.12 shall  govern) and  (B) changes  in the basis of taxation of
overall  net  income or  overall  gross  income by the  United  States or by the
foreign  jurisdiction  or state  under the laws of which  such  Lender  Party is
organized or has its  Applicable  Lending  Office or any  political  subdivision
thereof),  then the Borrower shall from time to time, upon demand by such Lender
Party  (with a copy of such  demand  to the  Administrative  Agent),  pay to the
Administrative  Agent for the account of such Lender  Party  additional  amounts
sufficient to compensate  such Lender Party for such increased  cost;  provided,
however,  that a Lender Party  claiming  additional  amounts  under this Section
2.10(a) agrees to use reasonable efforts (consistent with its internal policy

<PAGE>

and legal and  regulatory  restrictions)  to  designate a  different  Applicable
Lending Office if the making of such a designation  would avoid the need for, or
reduce the amount of, such increased  cost that may thereafter  accrue and would
not,  in  the   reasonable   judgment  of  such  Lender   Party,   be  otherwise
disadvantageous  to such Lender Party.  A  certificate  as to the amount of such
increased  cost,  submitted  to the  Borrower  by such  Lender  Party,  shall be
conclusive and binding for all purposes, absent manifest error.

     (b) If, due to either  (i) the  introduction  of or any change in or in the
interpretation  of  any  law or  regulation  or  (ii) the  compliance  with  any
guideline  or request  from any  central  bank or other  governmental  authority
(whether  or not having the force of law),  there  shall be any  increase in the
amount of capital required or reasonably expected to be maintained by any Lender
Party or any corporation  controlling  such Lender Party as a result of or based
upon the existence of such Lender Party's commitment to lend or to issue Letters
of Credit  hereunder  and other  commitments  of such  type or the  issuance  or
maintenance of the Letters of Credit (or similar contingent obligations),  then,
upon  demand  by  such  Lender  Party  (with  a  copy  of  such  demand  to  the
Administrative  Agent), the Borrower shall pay to the  Administrative  Agent for
the account of such Lender Party,  from time to time as specified by such Lender
Party,  additional  amounts  sufficient to  compensate  such Lender Party in the
light of such  circumstances,  to the extent that such Lender  Party  reasonably
determines  such  increase in capital to be allocable  to the  existence of such
Lender Party's  commitment to lend or to issue Letters of Credit hereunder or to
the issuance or maintenance  of any Letters of Credit.  A certificate as to such
amounts  submitted to the Borrower by such Lender Party shall be conclusive  and
binding for all purposes, absent manifest error.

     (c) If, with respect to any  Eurodollar  Rate Advances  under any Facility,
Lenders owed at least  66-2/3% of the then  aggregate  unpaid  principal  amount
thereof  notify  the  Administrative  Agent  that  the  Eurodollar  Rate for any
Interest  Period for such Advances will not adequately  reflect the cost to such
Lenders of making,  funding or maintaining  their  Eurodollar  Rate Advances for
such Interest  Period,  the  Administrative  Agent shall forthwith so notify the
Borrower and the Appropriate  Lenders,  whereupon  (i) each such Eurodollar Rate
Advance  under  any  Facility  will  automatically,  on the last day of the then
existing  Interest  Period  therefor,  Convert  into a Prime  Rate  Advance  and
(ii) the  obligation of the Appropriate  Lenders to make, or to Convert Advances
into, Eurodollar Rate Advances shall be suspended until the Administrative Agent
shall  notify  the  Borrower  that  such  Lenders  have   determined   that  the
circumstances causing such suspension no longer exist.

     (d)  Notwithstanding  any  other  provision  of  this  Agreement,   if  the
introduction  of or  any  change  in or in  the  interpretation  of  any  law or
regulation  shall make it unlawful,  or any central  bank or other  governmental
authority  shall  assert that it is unlawful,  for any Lender or its  Eurodollar
Lending  Office to perform its  obligations  hereunder to make  Eurodollar  Rate
Advances or to continue to fund or maintain  Eurodollar Rate Advances hereunder,
then,  on notice  thereof and demand  therefor  by such  Lender to the  Borrower
through the  Administrative  Agent,  (i) each Eurodollar Rate Advance under each
Facility under which such Lender has a Commitment will automatically,  upon such
demand,  Convert  into a Prime  Rate  Advance  and  (ii) the  obligation  of the
Appropriate  Lenders  to make,  or to Convert  Advances  into,  Eurodollar  Rate
Advances  shall be  suspended  until the  Administrative  Agent shall notify the
Borrower that such Lender has  determined  that the  circumstances  causing such
suspension no longer exist; provided, however, that, before making any such

<PAGE>

demand,  such  Lender  agrees to use  reasonable  efforts  (consistent  with its
internal policy and legal and regulatory  restrictions) to designate a different
Eurodollar  Lending Office if the making of such a designation  would allow such
Lender or its Eurodollar  Lending Office to continue to perform its  obligations
to make Eurodollar  Rate Advances or to continue to fund or maintain  Eurodollar
Rate  Advances  and would not, in the  judgment  of such  Lender,  be  otherwise
disadvantageous to such Lender.

     SECTION 2.11.  Payments and Computations.  (a) The Borrower shall make each
payment hereunder and under the Notes, irrespective of any right of counterclaim
or set-off (except as otherwise  provided in Section 2.15), not later than 11:00
A.M.  (Rochester,  New York  time) on the day  when due in U.S.  dollars  to the
Administrative  Agent at the  Administrative  Agent's Account in same day funds.
The  Administrative  Agent  will  promptly  thereafter  cause  like  funds to be
distributed  (i) if such  payment by the  Borrower  is in respect of  principal,
interest,  commitment fees or any other  Obligation  then payable  hereunder and
under the Notes to more than one Lender  Party,  to such Lender  Parties for the
account of their  respective  Applicable  Lending  Offices ratably in accordance
with the  amounts of such  respective  Obligations  then  payable to such Lender
Parties and (ii) if such payment by the Borrower is in respect of any Obligation
then payable hereunder to one Lender Party, to such Lender Party for the account
of its Applicable  Lending Office, in each case to be applied in accordance with
the terms of this Agreement. Upon its acceptance of an Assignment and Acceptance
and recording of the information  contained  therein in the Register pursuant to
Section  8.07(d),  from and  after the  effective  date of such  Assignment  and
Acceptance, the Administrative Agent shall make all payments hereunder and under
the Notes in  respect of the  interest  assigned  thereby  to the  Lender  Party
assignee  thereunder,  and the parties to such  Assignment and Acceptance  shall
make all  appropriate  adjustments  in such  payments for periods  prior to such
effective date directly between themselves.

     (b) If the  Administrative  Agent  receives  funds for  application  to the
Obligations  under the Loan  Documents  under  circumstances  for which the Loan
Documents do not specify the Advances or the Facility to which, or the manner in
which, such funds are to be applied, the Administrative Agent may, but shall not
be obligated to, elect to distribute  such funds to each Lender Party ratably in
accordance with such Lender Party's  proportionate share of the principal amount
of all  outstanding  Advances and the Available  Amount of all Letters of Credit
then outstanding, in repayment or prepayment of such of the outstanding Advances
or other  Obligations  owed to such Lender Party,  and for  application  to such
principal installments, as the Administrative Agent shall direct.

     (c) The Borrower hereby  authorizes each Lender Party, if and to the extent
payment owed to such Lender Party is not made when due hereunder or, in the case
of a Lender,  under the Note held by such  Lender,  to charge  from time to time
against any or all of the Borrower's  accounts with such Lender Party any amount
so due.

     (d) All  computations  of interest,  fees and Letter of Credit  commissions
shall be made by the Administrative Agent on the basis of a year of 360 days, in
each case for the actual number of days  (including  the first day but excluding
the  last  day)  occurring  in the  period  for  which  such  interest,  fees or
commissions are payable. Each determination by the Administrative Agent of
<PAGE>


an interest  rate, fee or commission  hereunder  shall be conclusive and binding
for all purposes, absent manifest error.

     (e) Whenever any payment hereunder or under the Notes shall be stated to be
due on a day other than a Business  Day,  such payment shall be made on the next
succeeding  Business  Day,  and such  extension  of time  shall in such  case be
included in the  computation  of payment of interest or  commitment  fee, as the
case may be; provided,  however,  that, if such extension would cause payment of
interest on or  principal  of  Eurodollar  Rate  Advances to be made in the next
following  calendar  month,  such  payment  shall be made on the next  preceding
Business Day.

     (f) Unless the  Administrative  Agent shall have  received  notice from the
Borrower  prior to the date on which  any  payment  is due to any  Lender  Party
hereunder   that  the  Borrower  will  not  make  such  payment  in  full,   the
Administrative  Agent may assume that the Borrower has made such payment in full
to the Administrative  Agent on such date and the  Administrative  Agent may, in
reliance upon such assumption, cause to be distributed to each such Lender Party
on such due date an amount  equal to the amount then due such Lender  Party.  If
and to the extent the  Borrower  shall not have so made such  payment in full to
the   Administrative   Agent,   each  such  Lender  Party  shall  repay  to  the
Administrative  Agent forthwith on demand such amount distributed to such Lender
Party together with interest thereon,  for each day from the date such amount is
distributed  to such Lender  Party until the date such Lender  Party repays such
amount to the Administrative Agent, at the Federal Funds Rate.

     SECTION 2.12. Taxes. (a) Any and all payments by the Borrower  hereunder or
under the Notes shall be made, in accordance  with Section 2.11,  free and clear
of and  without  deduction  for any and all  present  or future  taxes,  levies,
imposts, deductions,  charges or withholdings,  and all liabilities with respect
thereto,  excluding,  in the case of each  Lender  Party and the  Administrative
Agent,  net income  taxes that are  imposed by the United  States and net income
taxes (or  franchise  taxes  imposed in lieu  thereof)  that are imposed on such
Lender Party or the  Administrative  Agent by the state or foreign  jurisdiction
under the laws of which such Lender  Party or the  Administrative  Agent (as the
case may be) is organized or any political  subdivision thereof and, in the case
of each Lender  Party,  net income  taxes (or  franchise  taxes  imposed in lieu
thereof)  that  are  imposed  on such  Lender  Party  by the  state  or  foreign
jurisdiction of such Lender Party's  Applicable  Lending Office or any political
subdivision thereof (all such non-excluded taxes, levies,  imposts,  deductions,
charges,  withholdings and liabilities in respect of payments hereunder or under
the Notes being  hereinafter  referred to as "Taxes").  If the Borrower shall be
required  by law to  deduct  any Taxes  from or in  respect  of any sum  payable
hereunder or under any Note to any Lender Party or the Administrative Agent, (i)
the sum payable  shall be increased as may be necessary so that after making all
required deductions  (including deductions applicable to additional sums payable
under this Section 2.12) such Lender Party or the  Administrative  Agent (as the
case may be) receives an amount  equal to the sum it would have  received had no
such  deductions  been made,  (ii) the  Borrower shall make such  deductions and
(iii) the Borrower shall pay the full amount  deducted to the relevant  taxation
authority or other authority in accordance with applicable law.
<PAGE>

     (b) In  addition,  the  Borrower  shall pay any  present  or future  stamp,
documentary,  excise,  property or similar  taxes,  charges or levies that arise
from any  payment  made  hereunder  or under  the  Notes or from the  execution,
delivery or  registration  of,  performing  under, or otherwise with respect to,
this Agreement or the Notes (hereinafter referred to as "Other Taxes").

     (c) The Borrower shall  indemnify each Lender Party and the  Administrative
Agent for the full amount of Taxes and Other  Taxes,  and for the full amount of
taxes imposed by any  jurisdiction on amounts  payable under this  Section 2.12,
imposed on or paid by such Lender Party or the Administrative Agent (as the case
may be) and any liability (including  penalties,  additions to tax, interest and
expenses) arising therefrom or with respect thereto.  This indemnification shall
be made  within 30 days from the date such  Lender  Party or the  Administrative
Agent (as the case may be) makes written demand therefor.

     (d) Within 30 days after the date of any  payment  of Taxes,  the  Borrower
shall  furnish  to the  Administrative  Agent,  at its  address  referred  to in
Section 8.02,  the original  receipt of payment  thereof or a certified  copy of
such receipt.  In the case of any payment  hereunder or under the Notes by or on
behalf of the Borrower through an account or branch outside the United States or
by or on behalf of the Borrower by a payor that is not a United  States  person,
if the Borrower  determines  that no Taxes are payable in respect  thereof,  the
Borrower  shall  furnish,   or  shall  cause  such  payor  to  furnish,  to  the
Administrative  Agent, at such address,  an opinion of counsel acceptable to the
Administrative  Agent  stating  that such  payment  is exempt  from  Taxes.  For
purposes of this  subsection (d) and  subsection (e),  the terms "United States"
and "United States person" shall have the meanings  specified in Section 7701 of
the Internal Revenue Code.

     (e) Each Lender Party  organized  under the laws of a jurisdiction  outside
the United States  shall,  on or prior to the date of its execution and delivery
of this Agreement in the case of each Initial Lender or Initial Issuing Bank, as
the case may be, and on the date of the Assignment  and  Acceptance  pursuant to
which it became a Lender Party in the case of each other Lender Party,  and from
time  to  time  thereafter  as  requested  in  writing  by the  Borrower  or the
Administrative  Agent (but only so long  thereafter as such Lender Party remains
lawfully  able  to do so),  provide  each of the  Administrative  Agent  and the
Borrower  with two original  Internal  Revenue  Service  forms 1001 or 4224,  as
appropriate,  or any successor or other form prescribed by the Internal  Revenue
Service,  certifying  that such  Lender is exempt  from or entitled to a reduced
rate of United States  withholding tax on payments pursuant to this Agreement or
the Notes. If the forms provided by a Lender Party at the time such Lender Party
first  becomes a party to this  Agreement  indicates  a United  States  interest
withholding  tax rate in excess of zero,  withholding  tax at such rate shall be
considered  excluded from Taxes unless and until such Lender Party  provides the
appropriate  form certifying that a lesser rate applies,  whereupon  withholding
tax at such lesser rate only shall be considered excluded from Taxes for periods
governed by such form; provided, however, that, if at the date of the Assignment
and  Acceptance  pursuant  to  which a  Lender  Party  becomes  a party  to this
Agreement,   the  Lender  Party   assignor   was  entitled  to  payments   under
subsection (a)  in  respect of United  States  withholding  tax with  respect to
interest paid at such date,  then, to such extent,  the term Taxes shall include
(in  addition  to  withholding  taxes that may be imposed in the future or other
amounts  otherwise  includable in Taxes) United States  withholding tax, if any,
applicable  with respect to the Lender Party  assignee on such date. If any form
or document  referred  to in this  subsection (e)  requires  the  disclosure  of
information,  other than  information  necessary  to compute the tax payable and
information required on the date hereof by Internal Revenue Service form 1001 or
<PAGE>

     Lender  Party  reasonably  considers to be  confidential,  the Lender Party
shall give notice  thereof to the Borrower and shall not be obligated to include
in such form or document such confidential information.

     (f) For any  period  with  respect  to which a Lender  Party has  failed to
provide the Borrower  with the  appropriate  form  described in  subsection  (e)
(other than if such failure is due to a change in law  occurring  after the date
on which a form originally was required to be provided or if such form otherwise
is not required under  subsection  (e)), such Lender Party shall not be entitled
to indemnification  under subsection (a) or (c) with respect to Taxes imposed by
the United States by reason of such failure;  provided,  however,  that should a
Lender  Party become  subject to Taxes  because of its failure to deliver a form
required  hereunder,  the  Borrower  shall take such steps as such Lender  Party
shall reasonably request to assist such Lender Party to recover such Taxes.

     (g) Any Lender Party claiming any additional  amounts  payable  pursuant to
this Section 2.12 agrees to use reasonable efforts (consistent with its internal
policy and legal and regulatory  restrictions) to change the jurisdiction of its
Eurodollar  Lending  Office if the making of such a change  would avoid the need
for, or reduce the amount of, any such  additional  amounts that may  thereafter
accrue and would not,  in the  reasonable  judgment  of such  Lender  Party,  be
otherwise disadvantageous to such Lender Party.

     SECTION 2.13. Sharing of Payments, Etc. If any Lender Party shall obtain at
any time any payment (whether  voluntary,  involuntary,  through the exercise of
any right of  set-off,  or  otherwise)  (a) on  account of  Obligations  due and
payable  to such  Lender  Party  hereunder  and  under the Notes at such time in
excess of its ratable share  (according  to the  proportion of (i) the amount of
such  Obligations  due and payable to such Lender Party at such time to (ii) the
aggregate  amount of the  Obligations  due and  payable  to all  Lender  Parties
hereunder  and under the  Notes at such  time) of  payments  on  account  of the
Obligations due and payable to all Lender Parties  hereunder and under the Notes
at such time  obtained by all the Lender  Parties at such time or (b) on account
of  Obligations  owing (but not due and payable) to such Lender Party  hereunder
and under the Notes at such time in excess of its ratable  share  (according  to
the proportion of (i) the amount of such Obligations  owing to such Lender Party
at such time to (ii) the  aggregate amount of the Obligations owing (but not due
and payable) to all Lender  Parties  hereunder and under the Notes at such time)
of payments on account of the Obligations owing (but not due and payable) to all
Lender Parties hereunder and under the Notes at such time obtained by all of the
Lender Parties at such time, such Lender Party shall forthwith purchase from the
other Lender Parties such  participations  in the Obligations due and payable or
owing  to  them,  as the  case may be,  as  shall  be  necessary  to cause  such
purchasing  Lender Party to share the excess payment  ratably with each of them;
provided,  however,  that  if all or any  portion  of  such  excess  payment  is
thereafter  recovered from such purchasing Lender Party, such purchase from each
other Lender Party shall be rescinded and such other Lender Party shall repay to
the  purchasing  Lender  Party the  purchase  price to the extent of such Lender
Party's  ratable share  (according to the  proportion of (i) the purchase  price
paid to such  Lender  Party to (ii) the  aggregate  purchase  price  paid to all
Lender  Parties) of such  recovery  together with an amount equal to such Lender
Party's  ratable share  (according  to the  proportion of (i) the amount of such
other Lender  Party's  required  repayment to (ii) the total amount so recovered
from the  purchasing  Lender  Party) of any  interest  or other  amount  paid or
payable  by the  purchasing  Lender  Party in  respect  of the  total  amount so
<PAGE>

The Borrower  agrees that any Lender Party so  purchasing a  participation  from
another  Lender Party  pursuant to this Section 2.13 may, to the fullest  extent
permitted  by law,  exercise all its rights of payment  (including  the right of
set-off)  with  respect to such  participation  as fully as if such Lender Party
were the direct creditor of the Borrower in the amount of such participation.

     SECTION 2.14.  Use of Proceeds.  The proceeds of the Advances and issuances
of Letters of Credit shall be available  (and the Borrower  agrees that it shall
use such  proceeds  and Letters of Credit)  solely to pay to the Company and the
other owners of the Acquired  Assets and  Liabilities  the  consideration  to be
received  by  them  from  PSC  and  PSC  Acquisition  pursuant  to the  Purchase
Agreement, pay transaction fees and expenses and provide working capital for PSC
and its Subsidiaries.

     SECTION 2.15.  Defaulting Lenders.  (a) In the event that, at any one time,
(i) any Lender Party shall be a Defaulting  Lender,  (ii) such Defaulting Lender
shall owe a Defaulted  Advance to the Borrower  and (iii) the Borrower  shall be
required to make any payment  hereunder  or under any other Loan  Document to or
for the account of such Defaulting Lender,  then the Borrower may, so long as no
Default  shall occur or be  continuing  at such time and to the  fullest  extent
permitted by applicable  law, set off and otherwise  apply the Obligation of the
Borrower to make such  payment to or for the account of such  Defaulting  Lender
against the obligation of such Defaulting Lender to make such Defaulted Advance.
In the event that,  on any date,  the  Borrower  shall so set off and  otherwise
apply its  obligation  to make any such payment  against the  obligation of such
Defaulting  Lender to make any such Defaulted  Advance on or prior to such date,
the amount so set off and otherwise applied by the Borrower shall constitute for
all purposes of this  Agreement and the other Loan  Documents an Advance by such
Defaulting  Lender  made on the date under the  Facility  pursuant to which such
Defaulted  Advance  was  originally  required  to have  been  made  pursuant  to
Section 2.01.  Such  Advance  shall  be  a  Prime  Rate  Advance  and  shall  be
considered,  for  all  purposes  of  this  Agreement,  to  comprise  part of the
Borrowing  in  connection  with  which such  Defaulted  Advance  was  originally
required to have been made pursuant to Section 2.01,  even if the other Advances
comprising  such  Borrowing  shall be Eurodollar  Rate Advances on the date such
Advance is deemed to be made pursuant to this subsection (a). The Borrower shall
notify the Administrative  Agent at any time the Borrower exercises its right of
set-off  pursuant to this  subsection (a) and shall set forth in such notice (A)
the name of the Defaulting  Lender and the Defaulted Advance required to be made
by such  Defaulting  Lender and (B) the amount set off and otherwise  applied in
respect of such Defaulted  Advance  pursuant to this subsection (a). Any portion
of such  payment  otherwise  required  to be made by the  Borrower to or for the
account of such  Defaulting  Lender which is paid by the Borrower,  after giving
effect to the amount set off and otherwise  applied by the Borrower  pursuant to
this subsection (a), shall be applied by the  Administrative  Agent as specified
in subsection (b) or (c) of this Section 2.15.

     (b) In the event that,  at any one time,  (i) any  Lender  Party shall be a
Defaulting  Lender,  (ii) such Defaulting Lender shall owe a Defaulted Amount to
the  Administrative  Agent or any of the  other  Lender  Parties  and  (iii) the
Borrower  shall make any payment  hereunder or under any other Loan  Document to
the  Administrative  Agent for the account of such Defaulting  Lender,  then the
Administrative  Agent  may,  on its  behalf or on behalf  of such  other  Lender
Parties and to the fullest  extent  permitted by applicable  law,  apply at such
<PAGE>

time the amount so paid by the Borrower to or for the account of such Defaulting
Lender to the payment of each such  Defaulted  Amount to the extent  required to
pay such Defaulted Amount. In the event that the  Administrative  Agent shall so
apply any such amount to the payment of any such  Defaulted  Amount on any date,
the amount so applied  by the  Administrative  Agent  shall  constitute  for all
purposes of this Agreement and the other Loan Documents payment, to such extent,
of such  Defaulted  Amount  on such  date.  Any such  amount so  applied  by the
Administrative   Agent  shall  be  retained  by  the  Administrative   Agent  or
distributed by the Administrative Agent to such other Lender Parties, ratably in
accordance  with the respective  portions of such Defaulted  Amounts  payable at
such time to the Administrative  Agent and such other Lender Parties and, if the
amount of such payment made by the Borrower  shall at such time be  insufficient
to pay all Defaulted Amounts owing at such time to the Administrative  Agent and
the other Lender Parties, in the following order of priority:

          (i) first, to the  Administrative  Agent for any Defaulted Amount then
     owing to the Administrative Agent; and

          (ii)  second,  to the Lender  Parties for any  Defaulted  Amounts then
     owing to such Lender  Parties,  ratably in accordance  with such respective
     Defaulted Amounts then owing to such Lender Parties.

Any  portion  of such  amount  paid by the  Borrower  for  the  account  of such
Defaulting  Lender  remaining,  after giving effect to the amount applied by the
Administrative  Agent pursuant to this  subsection (b),  shall be applied by the
Administrative Agent as specified in subsection (c) of this Section 2.15.

     (c) In the event  that,  at any one time,  (i) any Lender  Party shall be a
Defaulting Lender, (ii) such Defaulting Lender shall not owe a Defaulted Advance
or a Defaulted Amount and (iii) the Borrower,  the  Administrative  Agent or any
other Lender Party shall be required to pay or distribute  any amount  hereunder
or under  any other  Loan  Document  to or for the  account  of such  Defaulting
Lender,  then the  Borrower or such other  Lender Party shall pay such amount to
the Administrative Agent to be held by the Administrative  Agent, to the fullest
extent permitted by applicable law, in escrow or the Administrative Agent shall,
to the fullest  extent  permitted by applicable  law, hold in escrow such amount
otherwise held by it. Any funds held by the Administrative Agent in escrow under
this subsection (c) shall be deposited by the Administrative Agent in an account
with Fleet, in the name and under the control of the  Administrative  Agent, but
subject to the provisions of this subsection  (c). The terms  applicable to such
account,  including  the rate of  interest  payable  with  respect to the credit
balance  of such  account  from time to time,  shall be Fleet's  standard  terms
applicable to escrow accounts  maintained with it. Any interest credited to such
account  from time to time shall be held by the  Administrative  Agent in escrow
under, and applied by the  Administrative  Agent from time to time in accordance
with the provisions of, this subsection (c).  The Administrative Agent shall, to
the fullest  extent  permitted  by  applicable  law,  apply all funds so held in
escrow from time to time to the extent  necessary to make any Advances  required
to be made by such  Defaulting  Lender  and to pay any  amount  payable  by such
Defaulting   Lender  hereunder  and  under  the  other  Loan  Documents  to  the
Administrative  Agent or any other Lender  Party,  as and when such  Advances or
amounts  are  required  to be made or paid and,  if the amount so held in escrow
shall at any time be insufficient to make and pay all such Advances and amounts
required to be made or paid at such time, in the following order of priority:
<PAGE>

          (i) first,  to the  Administrative  Agent for any amount  then due and
     payable by such Defaulting Lender to the Administrative Agent hereunder;

          (ii) second, to the Lender Parties for any amount then due and payable
     by such  Defaulting  Lender to such Lender  Parties  hereunder,  ratably in
     accordance with such respective amounts then due and payable to such Lender
     Parties; and

          (iii) third,  to the Borrower for any Advance then required to be made
     by such  Defaulting  Lender  pursuant to a  Commitment  of such  Defaulting
     Lender.

In the event that any Lender Party that is a  Defaulting  Lender  shall,  at any
time,  cease to be a  Defaulting  Lender,  any funds held by the  Administrative
Agent in  escrow  at such  time  with  respect  to such  Lender  Party  shall be
distributed by the Administrative Agent to such Lender Party and applied by such
Lender  Party to the  Obligations  owing to such Lender Party at such time under
this  Agreement  and the other Loan  Documents  ratably in  accordance  with the
respective amounts of such Obligations outstanding at such time.

          (d) The rights and  remedies  against a  Defaulting  Lender under this
     Section 2.15 are in addition to other rights and remedies that the Borrower
     may have  against  such  Defaulting  Lender with  respect to any  Defaulted
     Advance  and that the  Administrative  Agent or any  Lender  Party may have
     against such Defaulting Lender with respect to any Defaulted Amount.


                                   ARTICLE III

                             CONDITIONS OF LENDING

     SECTION  3.01.  Conditions  Precedent to Initial  Extension of Credit.  The
obligation  of each Lender to make an Advance or of the Issuing  Bank to issue a
Letter of Credit on the occasion of the Initial Extension of Credit hereunder is
subject to the  satisfaction  of the following  conditions  precedent  before or
concurrently  with the Initial  Extension of Credit:

          (a) The  Acquisition  shall  have been  consummated  substantially  in
     accordance with the terms of the Purchase Agreement,  without any waiver or
     amendment not consented to by the Lender Parties of any term,  provision or
     condition set forth therein, and in compliance with all applicable laws and
     all   necessary   approvals;   the  Merger  shall  have  been   consummated
     substantially in accordance with the terms of the Merger Agreement, without
     any waiver or amendment not consented to by the Lender Parties of any term,
     provision or condition set forth  therein,  and the Lender Parties shall be
     satisfied  that any  applicable  state  takeover law and any  supermajority
     provisions  in the charter of Scanning are not  applicable to the Merger or
     that any conditions to avoiding such restrictions have been satisfied.
<PAGE>

          (b) Each of the Merger  Agreement and the Purchase  Agreement shall be
     in full force and effect.

          (c)  The  Lender  Parties  shall  be  reasonably  satisfied  with  the
     corporate  and legal  structure and  capitalization  of each Loan Party and
     each  of its  Subsidiaries,  including  the  terms  and  conditions  of the
     charter, bylaws and each class of capital stock of each Loan Party and each
     such  Subsidiary  and of each  agreement  or  instrument  relating  to such
     structure or capitalization.

          (d) The Borrower  shall have  received at least  $30,000,000  in gross
     cash  proceeds  from the sale of the  Subordinated  Notes and the principal
     amount of the Seller Note shall not be in excess of $5,000,000.

          (e) The Lender  Parties  shall be satisfied  that all  Existing  Debt,
     other than the Debt identified on Schedule 3.01(e)  (the "Surviving Debt"),
     has been prepaid,  redeemed or defeased in full or otherwise  satisfied and
     extinguished  and that  all  such  Surviving  Debt  shall  be on terms  and
     conditions satisfactory to the Lender Parties.

          (f) There  shall  have  occurred  no  material  adverse  change in the
     business,  condition  (financial or  otherwise),  operations,  performance,
     properties or prospects of (i) either PSC and its Subsidiaries,  taken as a
     whole,  since December 31, 1995, or (ii) PSC Acquisition,  on an individual
     basis, or (iii) either Scanning and its  Subsidiaries  taken as a whole, or
     the Acquired Assets and Liabilities, since December 31, 1995.

          (g) Other than the  litigation  described  in  Schedule  3.01(g)  (the
     "Disclosed Litigation"),  there shall exist no action, suit, investigation,
     litigation or  proceeding  pending or threatened in any court or before any
     arbitrator or governmental or regulatory agency or authority that (i) could
     reasonably  be  expected  to (A)  have a  material  adverse  effect  on the
     business,  condition  (financial or  otherwise),  operations,  performance,
     properties or prospects of PSC and its Subsidiaries,  taken as a whole, PSC
     Acquisition,  on an  individual  basis,  the Company and its  Subsidiaries,
     taken  as  a  whole,  or  any  of  the  Acquired  Assets  and  Liabilities,
     (B) materially  adversely  affect  the  ability  of  the  Borrower  or  any
     Guarantor  to  perform  its   obligations   under  the  Loan  Documents  or
     (C) materially   adversely   affect  the  rights   and   remedies   of  the
     Administrative  Agent and the Lender  Parties  under the Loan  Documents or
     (ii) purports to materially  adversely affect any aspect of the Transaction
     or the Facilities  (collectively,  a "Material Adverse Effect");  and there
     shall have been no  material  adverse  change in the status,  or  financial
     effect on the Borrower or any of its Subsidiaries or Scanning or any of its
     Subsidiaries,  of the Disclosed  Litigation from that described on Schedule
     3.01(g).

          (h) All governmental and third party consents and approvals  necessary
     in connection with each aspect of the Purchase Agreement,  the Acquisition,
     the Merger,  the Securities  Purchase  Agreements and the Facilities  shall
     have been obtained  (without the imposition of any conditions  that are not
     acceptable  to the  Initial  Lenders)  and  shall  remain  in  effect;  all
     applicable  waiting  periods shall have expired  without any adverse action
<PAGE>

     being taken by any competent  authority;  and no law or regulation shall be
     applicable in the reasonable judgment of the Lender Parties that restrains,
     prevents or imposes  materially  adverse  conditions upon any aspect of the
     Purchase Agreement, the Acquisition, the Merger, the Securities Purchase
     Agreements or the Facilities.

          (i)  The  Lender   Parties  shall  have   completed  a  due  diligence
     investigation  of PSC, and its Subsidiaries and Scanning in scope, and with
     results,  reasonably  satisfactory to the Lender Parties, and nothing shall
     have come to the attention of the Lender  Parties during the course of such
     due  diligence   investigation   to  lead  them  to  believe  (i) that  the
     Information   Memorandum  was  or  has  become  misleading,   incorrect  or
     incomplete in any material respect,  (ii) that,  following the consummation
     of the Acquisition,  the Borrower and its Subsidiaries  would not have good
     and  marketable   title  to  all  material   assets  of  Scanning  and  its
     Subsidiaries  reflected in the  Information  Memorandum  and (iii) that the
     Acquisition  will have a Material  Adverse  Effect;  without  limiting  the
     generality of the foregoing,  the Lender Parties shall have been given such
     access  to  the  management,  records,  books  of  account,  contracts  and
     properties  of PSC,  its  Subsidiaries  and  Scanning  as they  shall  have
     requested.

          (j) All of the  information  provided by or on behalf of PSC or any of
     its  Subsidiaries  or by or  on  behalf  of  the  Company  or  any  of  its
     Subsidiaries  to the  Administrative  Agent and the Lender Parties prior to
     their  commitment  in  respect  of  the  Facilities  (the   "Pre-Commitment
     Information")  shall be true and correct in all  material  aspects,  and no
     development  or change shall have occurred,  and no additional  information
     shall  have  come  to the  attention  of the  Administrative  Agent  or the
     Lenders, that (i) has resulted in or could reasonably be expected to result
     in a material  change in, or material  deviation  from, the  Pre-Commitment
     Information  or (ii)  has had or could  reasonably  be  expected  to have a
     Material Adverse Effect.

          (k) The Borrower  shall have paid all accrued fees and expenses of the
     Administrative Agent and the Lender Parties (including the accrued fees and
     expenses of counsel to the Administrative Agent and M&T).

          (l) The Administrative  Agent shall have received on or before the day
     of the  Initial  Extension  of Credit  the  following,  each dated such day
     (unless  otherwise  specified),  in form and substance  satisfactory to the
     Administrative  Agent  (unless  otherwise  specified)  and  (except for the
     Notes) in sufficient copies for each Lender Party:

               (i) The Notes payable to the order of the Lenders.

               (ii)  Certified  copies  of (A) the  resolutions  of the Board of
          Directors  of the  Borrower,  Scanning,  PSC and each other Loan Party
          approving the Acquisition, the Merger, this Agreement, the Notes, each
          other Loan Document and each Related  Document to which it is or is to
          be a party, and of all documents  evidencing other necessary corporate
          action and  governmental and other third party approvals and consents,
          if any, with respect to the Acquisition,  the Merger,  this Agreement,
          the Notes,  each other Loan Document and each Related Document and (B)
          the  resolution of the Board of Directors of COMIDA  approving the New
          York Mortgage.
<PAGE>

               (iii) (A) A copy of the charter of the  Borrower,  Scanning,  the
          Company  and  each  other  Loan  Party  and  each  amendment  thereto,
          certified  (as of a date  reasonably  near  the  date  of the  Initial
          Extension of Credit) by the Secretary of State of the  jurisdiction of
          its  incorporation  as being a true and correct copy thereof and (B) a
          copy of the  organizational  documents  of COMIDA  and each  amendment
          thereto,  certified  (as of a date  reasonably  near  the  date of the
          Initial Extension of Credit) by the appropriate agency of the State of
          New York as being a true and correct copy thereof.

               (iv) A copy of a  certificate  of the  Secretary  of State of the
          jurisdiction of its incorporation,  dated within 7 days of the date of
          the Initial Extension of Credit,  listing the charter of the Borrower,
          PSC,  Scanning,  the  Company  and  each  other  Loan  Party  and each
          amendment  thereto on file in his office and certifying  that (A) such
          amendments  are  the  only  amendments  to  the   Borrower's,   PSC's,
          Scanning's  or such other Loan Party's  charter on file in his office,
          (B) the  Borrower,  PSC,  Scanning and each other Loan Party have paid
          all  franchise  taxes  to the  date of such  certificate  and  (C) the
          Borrower,   PSC,   Scanning   and  each  other  Loan  Party  are  duly
          incorporated  and in good standing  under the laws of the State of the
          jurisdiction of its incorporation.

               (v) A copy of a  certificate  of the  Secretary  of State of each
          State listed on Schedule  3.01(l)(vi),  dated reasonably near the date
          of the Initial Extension of Credit,  stating that PSC and Scanning are
          duly  qualified and in good standing as foreign  corporations  in such
          State and have filed all annual  reports  required  to be filed to the
          date of such certificate.

               (vi) Copies of a certificate of merger or other confirmation from
          the Secretary of State of the State of Delaware of the consummation of
          the Merger.

               (vii) A certificate of the Borrower, PSC, Scanning and each other
          Loan Party signed on behalf of the  Borrower,  PSC,  Scanning and such
          other  Loan  Party  by its  President  or a  Vice  President  and  its
          Secretary or any  Assistant  Secretary,  dated the date of the Initial
          Extension of Credit (the statements made in which certificate shall be
          true  on and as of the  date  of the  Initial  Extension  of  Credit),
          certifying as to (A) the  absence of any  amendments to the charter of
          the Borrower, PSC, Scanning or such other Loan Party since the date of
          the    Secretary    of   State's    certificate    referred    to   in
          Section 3.01(l)(iv),  (B) a true and correct copy of the bylaws of the
          Borrower,  PSC, Scanning and such other Loan Party as in effect on the
          date of the Initial Extension of Credit, (C) the due incorporation and
          good  standing of each of the Borrower,  PSC,  Scanning and such other
          Loan  Party  as  a  corporation   organized  under  the  laws  of  the
          jurisdiction of its  incorporation,  and the absence of any proceeding
          for the dissolution or liquidation of the Borrower,  PSC,  Scanning or
<PAGE>

          such  other  Loan  Party,  (D) the  truth of the  representations  and
          warranties contained in the Loan Documents as though made on and as of
          the date of the Initial Extension of Credit and (E) the absence of any
          event  occurring  and  continuing,   or  resulting  from  the  Initial
          Extension of Credit, that constitutes a Default.

               (viii) A certificate  of the Secretary or an Assistant  Secretary
          of the Borrower,  PSC,  Scanning and each other Loan Party  certifying
          the names and true  signatures of the officers of the  Borrower,  PSC,
          Scanning and such other Loan Party  authorized to sign this Agreement,
          the Notes, each other Loan Document and each Related Document to which
          they are or are to be parties and the other  documents to be delivered
          hereunder and thereunder.

               (ix) A security  agreement in substantially the form of Exhibit D
          (together with each other  security  agreement  delivered  pursuant to
          Section  5.01(o),  in each case as amended,  supplemented or otherwise
          modified from time to time in accordance with its terms, the "Security
          Agreement"),  duly executed by the Borrower,  PSC and each  Subsidiary
          Guarantor, together with:

                         (A)   certificates   representing  the  Pledged  Shares
                    referred  to therein  accompanied  by undated  stock  powers
                    executed  in blank and  instruments  evidencing  the Pledged
                    Debt   referred   to   therein   indorsed   in  blank,

                         (B) acknowledgment  copies or stamped receipt copies of
                    proper financing statements, duly filed on or before the day
                    of the Initial  Extension  of Credit (or other  confirmation
                    reasonably  satisfactory to the Administrative Agent of such
                    filing)   under   the   Uniform   Commercial   Code  of  all
                    jurisdictions  that  the   Administrative   Agent  may  deem
                    necessary  or  desirable in order to perfect and protect the
                    first  priority liens and security  interests  created under
                    the Security Agreement, covering the Collateral described in
                    the Security Agreement,

                         (C)  completed  requests for  information,  dated on or
                    before the date of the Initial Extension of Credit,  listing
                    the financing statements referred to in clause (B) above and
                    all  other  effective  financing  statements  filed  in  the
                    jurisdictions  referred to in clause (B) above that name the
                    Borrower,  the  Company  or any other  Loan Party as debtor,
                    together with copies of such other financing statements,

                         (D) evidence of the completion of all other  recordings
                    and  filings of or with  respect to the  Security  Agreement
                    that  the   Administrative   Agent  may  deem  necessary  or
                    reasonably  desirable  in order to perfect  and  protect the
                    Liens created thereby,

                         (E) evidence of the insurance  required by the terms of
                    the Security Agreement,
<PAGE>

                         (F) copies of the  Assigned  Agreements  referred to in
                    the  Security  Agreement,  together  with a consent  to such
                    assignment,  in  substantially  the form of Exhibit C to the
                    Security  Agreement,  duly  executed  by each  party to such
                    Assigned Agreements other than the Borrower, and

                         (G)   evidence   that  all   other   action   that  the
                    Administrative   Agent  may  deem  necessary  or  reasonably
                    desirable in order to perfect and protect the first priority
                    liens and  security  interests  created  under the  Security
                    Agreement has been taken.

               (x) An intellectual  property security agreement in substantially
          the form of Exhibit E (together with each other intellectual  property
          security agreement delivered pursuant to Section 5.01(o), in each case
          as amended,  supplemented  or otherwise  modified from time to time in
          accordance  with  its  terms,  the  "Intellectual   Property  Security
          Agreement"),  duly executed by the Borrower,  PSC and each  Subsidiary
          Guarantor,   together   with   evidence   that  all  action  that  the
          Administrative  Agent  may deem  necessary  or  desirable  in order to
          perfect and protect the first  priority  liens and security  interests
          created under the Intellectual  Property  Security  Agreement has been
          taken.
               (xi) (A) Deed of trust, trust deed, mortgage,  leasehold mortgage
          and leasehold deed of trust in  substantially  the form of Exhibit F-1
          and covering the properties listed on Schedule 3.01(l)(xi) and located
          in the  State of New  York  (as  amended,  supplemented  or  otherwise
          modified from time to time, the "New York Mortgage"), duly executed by
          PSC, and a deed of trust, trust deed, mortgage, leasehold mortgage and
          leasehold deed of trust in  substantially  the form of Exhibit F-2 and
          covering the properties listed on Schedule  3.10(l)(xi) and located in
          the State of Oregon (as amended,  supplemented  or otherwise  modified
          from time to time,  the "Oregon Deed of Trust"),  duly executed by the
          Borrower, together with:

                    (A) evidence that  counterparts  of the Mortgages  have been
               duly  recorded on or before the day of the Initial  Extension  of
               Credit in all filing or recording offices that the Administrative
               Agent may deem  necessary or desirable in order to create a valid
               first and subsisting  Lien on the property  described  therein in
               favor of the Secured  Parties  and that all filing and  recording
               taxes and fees have been paid,

                    (B) fully  paid  American  Land Title  Association  Lender's
               Extended   Coverage  title  insurance   policies  (the  "Mortgage
               Policies") in form and substance, with endorsements and in amount
               acceptable to the  Administrative  Agent,  issued,  coinsured and
               reinsured  by title  insurers  acceptable  to the  Administrative
               Agent,  insuring the  Mortgages to be valid first and  subsisting
               Liens on the property  described  therein,  free and clear of all
               defects   (including,   but  not  limited  to,   mechanics'   and
               materialmen's  Liens) and encumbrances,  excepting only Permitted

<PAGE>

               Encumbrances,  and providing for such other affirmative insurance
               (including  endorsements  for  future  advances  under  the  Loan
               Documents and for  mechanics' and  materialmen's  Liens) and such
               coinsurance and direct access  reinsurance as the  Administrative
               Agent may deem necessary or desirable,

                    (C) American Land Title  Association form surveys,  dated no
               more than 30 days  before  the day of the  Initial  Extension  of
               Credit,  certified to the Administrative  Agent and the issuer of
               the Mortgage Policies in a manner reasonably  satisfactory to the
               Administrative  Agent  by a land  surveyor  duly  registered  and
               licensed in the States in which the  property  described  in such
               surveys is located and  acceptable to the  Administrative  Agent,
               showing  all  buildings  and  other  improvements,  any  off-site
               improvements,  the  location of any  easements,  parking  spaces,
               rights of way,  building  set-back  lines  and other  dimensional
               regulations  and the  absence  of  encroachments,  either by such
               improvements  or on to such property,  and other  defects,  other
               than encroachments and other defects reasonably acceptable to the
               Administrative Agent,

                    (D) such consents and  agreements of lessors and other third
               parties,  and such estoppel letters and other  confirmations,  as
               the Administrative Agent may deem necessary or desirable,

                    (E) evidence of the  insurance  required by the terms of the
               Mortgages,

                    (F) signed copies of proper financing  statements for filing
               under the Uniform  Commercial Code of all jurisdictions  that the
               Administrative  Agent may deem necessary or desirable in order to
               perfect  and  protect  the  first  priority  liens  and  security
               interests created under the Mortgages in fixtures, and

                    (G) evidence  that all other action that the  Administrative
               Agent may deem  necessary  or  desirable in order to create valid
               first  and  subsisting  Liens on the  property  described  in the
               Mortgages has been taken.


          hereafter  amended,  the "Subsidiary  Guaranty," duly executed by each
          Subsidiary Guarantor.

               (xiii)  An  assumption  agreement  in  substantially  the form of
          Exhibit H (the "Assumption Agreement"), duly executed by the Surviving
          Corporation.

               (xiv) (A) Certified copies of each of the Related  Documents,  in
          each  case  duly  executed  by the  parties  thereto  and in form  and
          substance reasonably satisfactory to the Lender Parties, together with
          all  agreements,   instruments   and  other  documents   delivered  in
          connection therewith, and a certificate of PSC to the effect that the
<PAGE>

          aggregate   amount  of  transaction   fees  payable  pursuant  to  the
          Transaction  does not exceed the amount  previously  disclosed  in the
          Pre-Commitment  Information  and (B) certified  copies of notices (the
          "IRB  Notices"),  in form and substance  reasonably  acceptable to the
          Administrative  Agent,  of the  redemption  on  January 1, 1997 of the
          industrial revenue bonds issued pursuant to the IRB Documents.

               (xv) Such  financial,  business and other  information  regarding
          each Loan Party and its  Subsidiaries as the Lender Parties shall have
          reasonably requested, including, without limitation, information as to
          possible contingent liabilities,  tax matters,  environmental matters,
          obligations  under  Plans,  Multiemployer  Plans  and  Welfare  Plans,
          collective   bargaining   agreements  and  other   arrangements   with
          employees,  audited  annual  financial  statements  dated December 31,
          1995,  interim  financial  statements dated the end of the most recent
          fiscal  quarter for which  financial  statements are available (or, in
          the event the Lender  Parties' due diligence  review reveals  material
          changes  since such  financial  statements,  as of a later date within
          45 days of the day of the  Initial  Extension  of  Credit),  pro forma
          financial  statements  as to the  Borrower and  forecasts  prepared by
          management of PSC, in form and substance  reasonably  satisfactory  to
          the Lender Parties.

               (xvi)  Certificates,  in  substantially  the form of  Exhibit  I,
          attesting to the  Solvency of each Loan Party after  giving  effect to
          the Acquisition,  the Merger and the other  transactions  contemplated
          hereby, from its chief financial officer.

               (xvii) The  environmental  assessment  reports listed on Schedule
          3.01(l)(xvii).

               (xviii) Evidence of insurance naming the Administrative  Agent as
          insured and loss payee with such  responsible and reputable  insurance
          companies  or  associations,  and in such  amounts and  covering  such
          risks, as is reasonably satisfactory to the Lender Parties, including,
          without limitation, business interruption insurance.

               (xix)  Certified  copies of each  employment  agreement and other
          compensation arrangement with each executive officer of any Loan Party
          or any of its Subsidiaries.

               (xx)  Certified  copies of all  Material  Contracts  of each Loan
          Party and its Subsidiaries.

               (xxi) A special  warranty  deed from the Company to Scanning,  in
          form and substance satisfactory to the Administrative Agent, conveying
          to Scanning (i) all the Company's present right, title and interest in
          and to the IRB  Property and (ii) all right,  title and interest  that
          the Company may thereafter acquire in and to the IRB Property.

               (xxii) Borrowing Base Certificate.

1<PAGE>

               (xxiii) (A) A favorable opinion of Boylan,  Brown,  Code, Fowler,
          Vigdor & Wilson,  counsel for the Borrower,  in substantially the form
          of Exhibit J hereto and as to such other  matters as any Lender  Party
          through  the  Administrative  Agent  may  reasonably  request,  (B)  a
          favorable  opinion  of  Fried,  Frank,  Harris,  Shriver  &  Jacobson,
          intellectual  property  counsel  to the  Loan  Parties,  in  form  and
          substance reasonably  satisfactory to the Lender Parties, (C) a letter
          from Dechert Price & Rhoads,  counsel for SP Holdings and the Company,
          authorizing the Lender Parties and the Administrative Agent to rely on
          their opinion delivered  pursuant to the Purchase  Agreement and (D) a
          favorable  opinion of Gates & Adams,  counsel for COMIDA,  in form and
          substance reasonably satisfactory to the Lender Parties.

               (xxiv) A favorable  opinion of Stoel,  Rives local counsel to the
          Lender Parties in Oregon in substantially the form of Exhibit K hereto
          and  as to  such  other  matters  as  any  Lender  Party  through  the
          Administrative Agent may reasonably request.

               (xxv) A  favorable  opinion  of  Pennie &  Edmonds,  intellectual
          property counsel to the Lender Parties,  in substantially  the form of
          Exhibit L hereto  and as to such other  matters  as any  Lender  Party
          through the Administrative Agent may reasonably request.

               (xxvi) A favorable  opinion of Shearman &  Sterling,  counsel for
          the   Administrative   Agent,   in  form  and   substance   reasonably
          satisfactory to the Administrative Agent.

          (m) PSC shall have paid in full all amounts due to M&T under the terms
     of the $20,000,000  Amended and Restated Credit Facility Agreement dated as
     of September 28, 1995, provided to PSC by M&T and shall have terminated the
     commitment, and all other obligations, of M&T thereunder.

     SECTION 3.02.  Conditions  Precedent to Each  Borrowing  and Issuance.  The
obligation of each Appropriate Lender to make an Advance (other than a Letter of
Credit Advance made by the Issuing Bank or a Working  Capital Lender pursuant to
Section  2.03(c)  and a Swing  Line  Advance  made by a Working  Capital  Lender
pursuant to Section  2.02(b) on the occasion of each  Borrowing  (including  the
Initial Extension of Credit),  and the obligation of the Issuing Bank to issue a
Letter of Credit  (including the initial  issuance) or renew a Letter of Credit,
and the right of the Borrower to request a Swing Line  Borrowing or the issuance
or renewal of a Letter of Credit  shall be  subject  to the  further  conditions
precedent  that on the date of such  Borrowing  or issuance  or renewal  (a) the
following  statements  shall be true and the  Administrative  Agent  shall  have
received for the account of such Lender Party or the Issuing Bank a  certificate
signed by a duly  authorized  officer  of the  Borrower,  dated the date of such
Borrowing  or issuance or renewal,  stating  that (and each of the giving of the
applicable  Notice of  Borrowing,  Notice of Swing Line  Borrowing  or Notice of
Issuance or Notice of Renewal and the acceptance by the Borrower of the proceeds
of such  Borrowing  or of such Letter of Credit or the renewal of such Letter of
Credit shall constitute a representation  and warranty by the Borrower that both
on the date of such  notice and on the date of such  Borrowing  or  issuance  or
renewal such statements are true):
<PAGE>


          (i) the representations and warranties contained in each Loan Document
     are correct on and as of such date,  before and after giving effect to such
     Borrowing  or issuance or renewal and to the  application  of the  proceeds
     therefrom, as though made on and as of such date;

          (ii) no event has  occurred  and is  continuing,  or would result from
     such  Borrowing  or  issuance  or  renewal or from the  application  of the
     proceeds therefrom, that constitutes a Default; and

          (iii) for each Working  Capital  Advance or Swing Line Advance made by
     the Swing Line Bank or  issuance  or  renewal of any Letter of Credit,  the
     Borrowing  Base  exceeds  the  aggregate  principal  amount of the  Working
     Capital Advances plus Swing Line Advances plus Letter of Credit Advances to
     be outstanding plus the aggregate Available Amount of all Letters of Credit
     then  outstanding  after  giving  effect to such  Advance  or  issuance  or
     renewal, respectively;

and (b) the  Administrative  Agent  shall have  received  such other  approvals,
opinions or documents as any Appropriate Lender through the Administrative Agent
may reasonably request.

     SECTION  3.03.   Determinations   Under  Section  3.01.   For  purposes  of
determining  compliance  with the  conditions  specified in  Section 3.01,  each
Lender Party shall be deemed to have consented to, approved or accepted or to be
satisfied with each document or other matter required thereunder to be consented
to or approved by or acceptable or  satisfactory to the Lender Parties unless an
officer  of  the   Administrative   Agent   responsible  for  the   transactions
contemplated  by the Loan Documents  shall have received notice from such Lender
Party prior to the Initial  Extension of Credit specifying its objection thereto
and if the Initial  Extension  of Credit  consists of a  Borrowing,  such Lender
Party  shall not have made  available  to the  Administrative  Agent such Lender
Party's ratable portion of such Borrowing.

                                   ARTICLE IV
                         REPRESENTATIONS AND WARRANTIES

     SECTION 4.01.  Representations and Warranties of PSC and the Borrower. Each
of PSC and the Borrower represents and warrants as follows:

          (a) Each Loan  Party  (i) is a  corporation  duly  organized,  validly
     existing and in good  standing  under the laws of the  jurisdiction  of its
     incorporation,  (ii) is duly  qualified  and in good  standing as a foreign
     corporation in each other  jurisdiction in which it owns or leases property
     or in which the  conduct of its  business  requires  it to so qualify or be
     licensed  except  where the failure to so qualify or be licensed  could not
     reasonably be expected to have a Material  Adverse Effect and (iii) has all
     requisite corporate power and authority (including, without limitation, all
     governmental  licenses,  permits and other  approvals)  to own or lease and
     operate its properties and to carry on its business as now conducted and as
     proposed  to be  conducted.  All of the  outstanding  capital  stock of the
     Borrower has been validly issued, is
<PAGE>

     fully  paid and  non-assessable  and is owned by PSC free and  clear of all
     Liens, except those created under the Collateral Documents.

          (b) Set forth on Schedule  4.01(b)  hereto is a complete  and accurate
     list of all Subsidiaries of each Loan Party,  showing as of the date hereof
     (as to each such  Subsidiary) the  jurisdiction of its  incorporation,  the
     number of shares of each class of capital stock authorized,  and the number
     outstanding,  on the date  hereof  and the  percentage  of the  outstanding
     shares of each such class owned (directly or indirectly) by such Loan Party
     and the number of shares  covered  by all  outstanding  options,  warrants,
     rights of conversion or purchase and similar rights at the date hereof. All
     of the  outstanding  capital  stock  of all of such  Subsidiaries  has been
     validly issued, is fully paid and  non-assessable and is owned by such Loan
     Party  or one or more of its  Subsidiaries  free and  clear  of all  Liens,
     except those created under the Loan Documents.  Each such Subsidiary (i) is
     a corporation  duly organized,  validly existing and in good standing under
     the laws of the jurisdiction of its  incorporation,  (ii) is duly qualified
     and in good standing as a foreign corporation in each other jurisdiction in
     which it owns or leases  property or in which the  conduct of its  business
     requires  it to so qualify or be  licensed  except  where the failure to so
     qualify or be licensed  could not reasonably be expected to have a Material
     Adverse  Effect and (iii) has all requisite  corporate  power and authority
     (including,  without  limitation,  all governmental  licenses,  permits and
     other approvals) to own or lease and operate its properties and to carry on
     its business as now conducted and as proposed to be conducted.

          (c) The execution, delivery and performance by each Loan Party of this
     Agreement, the Notes, each other Loan Document and each Related Document to
     which it is or is to be a party, and the consummation of the Merger and the
     other  transactions  contemplated  hereby,  are  within  such Loan  Party's
     corporate  powers,  have been duly  authorized by all  necessary  corporate
     action,  and do not  (i) contravene  such Loan  Party's  charter or bylaws,
     (ii)violate  any  law  (including,   without  limitation,  the  Securities
     Exchange Act of 1934 and the Racketeer Influenced and Corrupt Organizations
     Chapter of the  Organized  Crime  Control  Act of 1970),  rule,  regulation
     (including,  without limitation,  Regulation X of the Board of Governors of
     the Federal Reserve System),  order, writ,  judgment,  injunction,  decree,
     determination or award,  (iii) conflict with or result in the breach of, or
     constitute  a  default  under,  any  material  contract,   loan  agreement,
     indenture, mortgage, deed of trust, lease or other instrument binding on or
     affecting  any  Loan  Party,  any of  its  Subsidiaries  or  any  of  their
     properties or (iv) except  for the Liens created under the Loan  Documents,
     result in or require the  creation or  imposition  of any Lien upon or with
     respect  to  any  of  the  properties  of  any  Loan  Party  or  any of its
     Subsidiaries.  No Loan Party or any of its  Subsidiaries is in violation of
     any such law, rule, regulation, order, writ, judgment,  injunction, decree,
     determination  or award or in breach of any such contract,  loan agreement,
     indenture,  mortgage,  deed  of  trust,  lease  or  other  instrument,  the
     violation  or  breach  of which  could  reasonably  be  expected  to have a
     Material Adverse Effect.

          (d) No  authorization or approval or other action by, and no notice to
     or filing with, any governmental  authority or regulatory body or any other
     third party is required for (i) the due execution,  delivery,  recordation,

<PAGE>

     filing or performance by any Loan Party of this Agreement,  the Notes,  any
     other Loan  Document or any  Related  Document to which it is or is to be a
     party, or for the consummation of the Acquisition,  the Merger or the other
     transactions  contemplated  hereby, (ii) the grant by any Loan Party of the
     Liens  granted  by it  pursuant  to the  Collateral  Documents,  (iii)  the
     perfection or maintenance of the Liens created by the Collateral  Documents
     (including the first priority  nature  thereof) or (iv)the  exercise by the
     Administrative  Agent or any  Lender  Party of its  rights  under  the Loan
     Documents  or the  remedies  in respect of the  Collateral  pursuant to the
     Collateral Documents,  except for the authorizations,  approvals,  actions,
     notices and filings listed on Schedule 4.01(d), all of which have been duly
     obtained,  taken,  given  or made and are in full  force  and  effect.  All
     applicable  waiting periods in connection with the Acquisition,  the Merger
     and the other  transactions  contemplated  hereby have expired  without any
     action having been taken by any competent authority restraining, preventing
     or imposing materially adverse conditions upon the Acquisition,  the Merger
     or the rights of the Loan Parties or their Subsidiaries  freely to transfer
     or otherwise dispose of, or to create any Lien on, any properties now owned
     or hereafter acquired by any of them.

          (e) This  Agreement has been,  and each of the Notes,  each other Loan
     Document and each Related Document when delivered hereunder will have been,
     duly executed and delivered by each Loan Party thereto.  This Agreement is,
     and each of the Notes,  each other Loan Document and each Related  Document
     when delivered  hereunder will be, the legal,  valid and binding obligation
     of each  Loan  Party  thereto,  enforceable  against  such  Loan  Party  in
     accordance with its terms.

          (f) (i) The  Consolidated  and  consolidating  balance  sheets  of the
     Company and its  Subsidiaries  as at  December  31,  1995,  and the related
     Consolidated  and  consolidating  statements  of  income  and  Consolidated
     statement of cash flows of the Company and its  Subsidiaries for the fiscal
     year then ended, accompanied by (in the case of such consolidated financial
     statements)   an  opinion  of   Coopers  &  Lybrand,   independent   public
     accountants,  and the  Consolidated  balance  sheet of the  Company and its
     Subsidiaries as at March 31, 1996, and the related  Consolidated  statement
     of income and  Consolidated  statement of cash flows of the Company and its
     Subsidiaries  for the three months then ended,  duly certified by the chief
     executive officer or the chief financial officer of the Company,  copies of
     which have been furnished to each Lender Party, fairly present, subject, in
     the case of said balance sheet as at March 31, 1996, and said statements of
     income and cash flows for the three  months then ended,  to year-end  audit
     adjustments,  the  Consolidated  (and,  with respect to the balance  sheets
     dated December 31, 1995,  consolidating) financial condition of the Company
     and its  Subsidiaries  as at such  dates and the  Consolidated  (and,  with
     respect to the statements of income dated December 31, 1995, consolidating)
     results of the  operations  of the  Company  and its  Subsidiaries  for the
     period  ended on such  date,  all in  accordance  with  generally  accepted
     accounting principles applied on a consistent basis, and since December 31,
     1995, there has been no Material Adverse Change.

          (ii) The Consolidated and consolidating  balance sheets of PSC and its
     Subsidiaries  as at  December 31,  1995, and the related  Consolidated  and
     consolidating statements of income and Consolidated statement of cash flows

<PAGE>

     of PSC and its Subsidiaries for the fiscal year then ended,  accompanied by
     (in the case such Consolidated  financial  statements) an opinion of Arthur
     Anderson,  independent  public  accountants,  and the Consolidated  balance
     sheet of PSC and its  Subsidiaries  as at March 31,  1996,  and the related
     Consolidated  statement of income and Consolidated  statement of cash flows
     of PSC and its Subsidiaries for the three months then ended, duly certified
     by the chief financial  officer of PSC, copies of which have been furnished
     to each Lender Party, fairly present,  subject, in the case of said balance
     sheets as at March 31, 1996,  and said  statements of income and cash flows
     for the three  months  then  ended,  to  year-end  audit  adjustments,  the
     Consolidated  (and,  with respect to the balance  sheets dated December 31,
     1995,  consolidating) financial condition of PSC and its Subsidiaries as at
     such dates and the  Consolidated  (and,  with respect to the  statements of
     income dated December 31, 1995, consolidating) results of the operations of
     PSC and its  Subsidiaries  for  the  period  ended  on  such  date,  all in
     accordance  with  generally  accepted  accounting  principles  applied on a
     consistent  basis,  and since December 31, 1995, there has been no Material
     Adverse Change.


          (g)  The   Consolidated  pro  forma  balance  sheet  of  PSC  and  its
     Subsidiaries as at March 31, 1996, and the related  Consolidated  pro forma
     statement  of income  and cash  flows of PSC and its  Subsidiaries  for the
     three months then ended,  certified by the chief financial  officer of PSC,
     copies of which have been  furnished to each Lender Party,  fairly  present
     the Consolidated  pro forma financial condition of PSC and its Subsidiaries
     as at such date and the Consolidated pro forma results of operations of PSC
     and its Subsidiaries for the period ended on such date, in each case giving
     effect to the Acquisition and the other transactions  contemplated  hereby,
     all in accordance with GAAP.

          (h) The Consolidated  forecasted balance sheets, income statements and
     cash flows statements of PSC and its  Subsidiaries  delivered to the Lender
     Parties pursuant to Section 3.01(l)(xv) or 5.03 were prepared in good faith
     on the basis of the assumptions stated therein, which assumptions were fair
     in the  light  of  conditions  existing  at the  time of  delivery  of such
     forecasts, and represented, at the time of delivery, PSC's best estimate of
     its future financial performance.

          (i)  Neither the  Information  Memorandum  nor any other  information,
     exhibit or report furnished by any Loan Party to the  Administrative  Agent
     or any  Lender  Party  in  connection  with  the  negotiation  of the  Loan
     Documents  or pursuant  to the terms of the Loan  Documents  contained  any
     untrue  statement  of a material  fact or omitted to state a material  fact
     necessary to make the statements made therein not misleading.

          (j) Other than the  Disclosed  Litigation,  there is no action,  suit,
     investigation,  litigation or proceeding affecting any Loan Party or any of
     its Subsidiaries, including any Environmental Action, pending or threatened
     before any court,  governmental  agency or arbitrator that could reasonably
     be  expected  to have a  Material  Adverse  Effect,  and  there has been no
     material  adverse  change in the status,  or  financial  effect on any Loan
     Party or any of its  Subsidiaries,  of the Disclosed  Litigation  from that
     described on Schedule 3.01(g).

<PAGE>

          (k) No proceeds of any Advance or drawings  under any Letter of Credit
     will be used to acquire any equity  security of a class that is  registered
     pursuant to Section 12 of the Securities Exchange Act of 1934.

          (l) Each of PSC and the  Borrower  is not  engaged in the  business of
     extending  credit for the purpose of purchasing  or carrying  Margin Stock,
     and no proceeds of any Advance or drawings  under any Letter of Credit will
     be used to purchase or carry any Margin Stock or to extend credit to others
     for the purpose of purchasing or carrying any Margin Stock.

          (m) Following  application  of the proceeds of each Advance or drawing
     under each  Letter of Credit,  not more than 25 percent of the value of the
     assets (either of PSC only or of PSC and its Subsidiaries on a Consolidated
     basis) subject to the provisions of  Section 5.02(a)  or 5.02(e) or subject
     to any restriction contained in any agreement or instrument between PSC and
     any Lender Party or any Affiliate of any Lender Party  relating to Debt and
     within the scope of Section 6.01(e) will be Margin Stock.

          (n)  None  of PSC,  the  Borrower  or any of  their  ERISA  Affiliates
     maintains any Plans or  Multiemployer  Plans. Set forth on Schedule 4.01(n)
     is a complete and accurate list of all Welfare Plans.

          (o) Except as set forth in the  financial  statements  referred  to in
     this  Section  4.01  and in  Section  5.03,  the  Loan  Parties  and  their
     respective   Subsidiaries  have  no  material  liability  with  respect  to
     "expected  post  retirement  benefit  obligations"  within  the  meaning of
     Statement of Financial Accounting Standards No. 106.

          (p) Neither the business nor the  properties  of any Loan Party or any
     of its Subsidiaries are affected by any fire, explosion,  accident, strike,
     lockout or other labor dispute, drought, storm, hail, earthquake,  embargo,
     act of God or of the public enemy or other casualty (whether or not covered
     by insurance) that could  reasonably be expected to have a Material Adverse
     Effect.

          (q) The  operations  and properties of each Loan Party and each of its
     Subsidiaries  comply in all known  material  respects  with all  applicable
     Environmental Laws and Environmental Permits, all known past non-compliance
     with such  Environmental  Laws and Environmental  Permits has been resolved
     without ongoing obligations or costs, and no circumstances exist that could
     reasonably  be  expected to (i) form the basis of an  Environmental  Action
     against  any  Loan  Party  or  any  of its  Subsidiaries  or  any of  their
     properties  that could  reasonably  be expected to have a Material  Adverse
     Effect or (ii) cause any such property to be subject to any restrictions on
     ownership, occupancy, use or transferability under any Environmental Law.

          (r) Except as disclosed in the environmental assessment reports listed
     on Schedule  3.01(l)(xvii),  none of the  properties  currently or formerly
     owned or operated by any Loan Party or any of its Subsidiaries is listed or
     proposed for listing on the NPL or on the CERCLIS or any analogous foreign,

<PAGE>

     state or local list or is adjacent to any such property;  there are no and,
     to  the  best  of  its  knowledge,  never  have  been  any  underground  or
     aboveground storage tanks or any surface impoundments,  septic tanks, pits,
     sumps or lagoons in which Hazardous  Materials are being or, to the best of
     its  knowledge,  have been  treated,  stored or  disposed  on any  property
     currently  owned or operated  by any Loan Party or any of its  Subsidiaries
     or,  to the  best of its  knowledge,  on any  property  formerly  owned  or
     operated by any Loan Party or any of its Subsidiaries; there is no asbestos
     or asbestos-containing material on any property currently owned or operated
     by any Loan Party or any of its Subsidiaries;  and Hazardous Materials have
     not been  released,  discharged  or disposed of on any  property  currently
     owned or  operated  by any Loan  Party  or any of its  Subsidiaries  or any
     property formerly owned or operated by any Loan Party (other than Scanning)
     or any of its  Subsidiaries or any property,  to the best of its knowledge,
     any  property  formerly  owned  or  operated  by  Scanning  or  any  of its
     Subsidiaries.

          (s) Neither any Loan Party nor any of its Subsidiaries is undertaking,
     and  has  not  completed,   either  individually  or  together  with  other
     potentially   responsible  parties,  any  investigation  or  assessment  or
     remedial or response action  relating to any actual or threatened  release,
     discharge  or  disposal of  Hazardous  Materials  at any site,  location or
     operation,  either voluntarily or pursuant to the order of any governmental
     or regulatory  authority or the requirements of any Environmental  Law; and
     all Hazardous Materials generated,  used, treated, handled or stored at, or
     transported  to or from,  any property  currently  owned or operated by any
     Loan Party or any of its  Subsidiaries  or any property  formerly  owned or
     operated by any Loan Party (other than Scanning) or any of its Subsidiaries
     or, to the best of its knowledge,  any property  formerly owned or operated
     by Scanning or any of its  Subsidiaries  have been  disposed of in a manner
     not reasonably  expected to result in material  liability to any Loan Party
     or any of its Subsidiaries.

          (t) Neither any Loan Party nor any of its  Subsidiaries  is a party to
     any indenture,  loan or credit agreement or any lease or other agreement or
     instrument  or subject to any charter or corporate  restriction  that could
     reasonably be expected to have a Material Adverse Effect.

          (u) The  Collateral  Documents  create  a valid  and  perfected  first
     priority security  interest in the Collateral,  securing the payment of the
     Secured  Obligations,  and all  filings  and  other  actions  necessary  or
     reasonably  desirable to perfect and protect such  security  interest  have
     been duly taken.  The Loan Parties are the legal and  beneficial  owners of
     the  Collateral  free and  clear of any  Lien,  except  for the  liens  and
     security interests created or permitted under the Loan Documents.

          (v) Each Loan Party and each of its Subsidiaries has filed, has caused
     to be filed or has been included in all tax returns (Federal,  state, local
     and foreign)  required to be filed and has paid all taxes shown  thereon to
     be due, together with applicable interest and penalties.
<PAGE>

          (w) Set forth on Schedule  4.01(w)  hereto is a complete  and accurate
     list,  as of the date  hereof,  of each taxable year of each Loan Party and
     each of its  Subsidiaries  for which  Federal  income tax returns have been
     filed and for which the expiration of the applicable statute of limitations
     for  assessment  or  collection  has not occurred by reason of extension or
     otherwise (an "Open Year").

          (x) There is no unpaid amount,  as of the date hereof,  of adjustments
     to the  Federal  income  tax  liability  of each Loan Party and each of its
     Subsidiaries  proposed by the Internal Revenue Service with respect to Open
     Years.  No issues  have been  raised by the  Internal  Revenue  Service  in
     respect of Open Years that, in the aggregate,  could reasonably be expected
     to have a Material Adverse Effect.

          (y) There is no unpaid amount,  as of the date hereof,  of adjustments
     to the state,  local and foreign tax  liability  of each Loan Party and its
     Subsidiaries  proposed by all state,  local and foreign taxing  authorities
     (other  than  amounts  arising  from  adjustments  to  Federal  income  tax
     returns).  No issues have been raised by such taxing  authorities  that, in
     the  aggregate,  could  reasonably  be expected to have a Material  Adverse
     Effect.

          (z) The  Merger  will  not be  taxable  to the  Company  or any of its
     Subsidiaries or Affiliates.

          (aa) No  "ownership  change"  as  defined  in  Section  382(g)  of the
     Internal Revenue Code, and no event that would result in the application of
     the "separate return  limitation  year" or  "consolidated  return change of
     ownership"  limitations  under the Federal income tax  consolidated  return
     regulations, has occurred with respect to PSC.

          (bb)  Neither  any  Loan  Party  nor  any  of its  Subsidiaries  is an
     "investment  company,"  or an  "affiliated  person"  of, or  "promoter"  or
     "principal  underwriter"  for, an  "investment  company," as such terms are
     defined in the  Investment  Company Act of 1940,  as  amended.  Neither the
     making of any Advances,  nor the issuance of any Letters of Credit, nor the
     application of the proceeds or repayment  thereof by the Borrower,  nor the
     consummation of the other transactions  contemplated  hereby,  will violate
     any  provision  of  such  Act or  any  rule,  regulation  or  order  of the
     Securities and Exchange Commission thereunder.

          (cc)  Each  Loan  Party  is,   individually   and  together  with  its
     Subsidiaries, Solvent.

          (dd) Set forth on Schedule 4.01(dd)  hereto is a complete and accurate
     list of all Existing Debt (other than  Surviving  Debt),  showing as of the
     date hereof the principal amount outstanding thereunder.

          (ee) Set forth on Schedule  4.01(ee) hereto is a complete and accurate
     list of all  Surviving  Debt,  showing as of the date hereof the  principal
     amount   outstanding   thereunder,   the  maturity  date  thereof  and  the
     amortization schedule therefor.

          (ff) Set forth on Schedule 4.01 (ff) hereto is a complete and accurate
     list  of  all  real  property  owned  by  any  Loan  Party  or  any  of its
<PAGE>

     Subsidiaries  or in which any Loan  Party  has an  interest  as a  contract
     vendee,  showing as of the date hereof the street address,  county or other
     relevant  jurisdiction,  state,  record owner and book and  estimated  fair
     value thereof.  Each Loan Party or such Subsidiary has good, marketable and
     insurable  fee simple  title to such real  property,  free and clear of all
     Liens, other than Liens created or permitted by the Loan Documents.

          (gg) Set forth on Schedule 4.01(gg)  hereto is a complete and accurate
     list of all leases of real  property  under  which any Loan Party or any of
     its  Subsidiaries  is the lessee,  showing as of the date hereof the street
     address,  county or other relevant  jurisdiction,  state,  lessor,  lessee,
     expiration  date and annual rental cost thereof.  To the best  knowledge of
     each Loan Party, each such lease is the legal, valid and binding obligation
     of the lessor thereof, enforceable in accordance with its terms.

          (hh) Set forth on Schedule 4.01(hh)  hereto is a complete and accurate
     list of all  Material  Contracts  of each Loan Party and its  Subsidiaries,
     showing as of the date hereof the parties, subject matter and term thereof.
     Except as could not  reasonably  be  expected  to have a  Material  Adverse
     Effect, each such Material Contract has been duly authorized,  executed and
     delivered  by all  parties  thereto,  has not  been  amended  or  otherwise
     modified,  is in full force and effect and is binding upon and  enforceable
     against all parties thereto in accordance  with its terms.  There exists no
     default under any Material Contract by PSC or any of its Subsidiaries party
     thereto  and to the best  knowledge  of each Loan  Party,  there  exists no
     default under any Material Contract by any other party thereto.

          (ii) Set forth on Schedule 4.01(ii)  hereto is a complete and accurate
     list of all Investments held by any Loan Party or any of its  Subsidiaries,
     showing as of the date hereof the amount,  obligor or issuer and  maturity,
     if any, thereof.

          (jj) Set forth on Schedule  4.01(jj) hereto is a complete and accurate
     list of all patents, trademarks, trade names, service marks and copyrights,
     and all applications  therefor and licenses thereof,  of each Loan Party or
     any of its Subsidiaries,  showing as of the date hereof the jurisdiction in
     which registered, the registration number, the date of registration and the
     expiration date.


                                    ARTICLE V

                        COVENANTS OF PSC AND THE BORROWER

     SECTION 5.01.  Affirmative  Covenants.  So long as any Advance shall remain
unpaid, any Letter of Credit shall be outstanding or any Lender Party shall have
any Commitment hereunder, each of PSC and the Borrower will: 

     (a) Compliance with Laws, Etc.  Comply,  and cause each of its Subsidiaries
to  comply,  in  all  material  respects,   with  all  applicable  laws,  rules,
regulations  and  orders,  such  compliance  to  include,   without  limitation,
compliance with ERISA and Environmental Laws.

<PAGE>

     (b)  Payment  of Taxes,  Etc.  Pay and  discharge,  and  cause  each of its
Subsidiaries  to pay and  discharge,  before the same shall  become  delinquent,
(i) all taxes, assessments and governmental charges or levies imposed upon it or
upon its property  and (ii) all  lawful  claims  that,  if unpaid,  might by law
become a Lien  upon its  property;  provided,  however,  that  each of PSC,  the
Borrower  and their  respective  Subsidiaries  shall not be  required  to pay or
discharge any such tax,  assessment,  charge or claim that is being contested in
good faith and by proper  proceedings and as to which  appropriate  reserves are
being maintained,  unless and until any Lien resulting therefrom attaches to its
property and becomes enforceable against its other creditors.

     (c)  Compliance  with  Environmental  Laws.  Comply,  and cause each of its
Subsidiaries  and all lessees  and other  Persons  operating  or  occupying  its
properties  to  comply,   in  all  material   respects,   with  all   applicable
Environmental Laws and Environmental Permits; obtain and renew and cause each of
its  Subsidiaries  to  obtain  and renew all  Environmental  Permits  reasonably
necessary for its operations and properties;  and conduct, and cause each of its
Subsidiaries to conduct,  any investigation,  study,  sampling and testing,  and
undertake any cleanup, removal, remedial or other action necessary to remove and
clean up all Hazardous Materials from any of its properties,  in accordance with
the requirements of all Environmental Laws; provided, however, that each of PSC,
the  Borrower  and  their  respective  Subsidiaries  shall  not be  required  to
undertake any such cleanup, removal, remedial or other action to the extent that
its  obligation  to do so is  being  contested  in  good  faith  and  by  proper
proceedings and appropriate  reserves are being  maintained with respect to such
circumstances.

     (d) Maintenance of Insurance.  Maintain, and cause each of its Subsidiaries
to maintain,  insurance with  responsible and reputable  insurance  companies or
associations  in such amounts and covering  such risks as is usually  carried by
companies  engaged in similar  businesses and owning  similar  properties in the
same general areas in which PSC, the Borrower or such Subsidiary operates.

     (e) Preservation of Corporate  Existence,  Etc. Preserve and maintain,  and
cause each of its  Subsidiaries to preserve and maintain,  its existence,  legal
structure,  legal name,  rights  (charter  and  statutory),  permits,  licenses,
approvals,  privileges and franchises;  provided, however, that the Borrower and
its Subsidiaries may consummate the Merger and any other merger or consolidation
permitted  under  Section 5.02(d)  and  provided  further  that none of PSC, the
Borrower or any of their respective  Subsidiaries  shall be required to preserve
any right,  permit,  license,  approval,  privilege or franchise if the Board of
Directors of PSC,  the  Borrower or such  Subsidiary  shall  determine  that the
preservation  thereof is no longer  desirable  in the conduct of the business of
PSC,  the  Borrower  or such  Subsidiary,  as the case may be, and that the loss
thereof is not  disadvantageous  in any material  respect to PSC, the  Borrower,
such Subsidiary or the Lender Parties.
<PAGE>

     (f) Visitation  Rights.  (i) At any reasonable time and from time to time,
upon reasonable  notice,  permit the  Administrative  Agent or any of the Lender
Parties or any agents or representatives  thereof, to examine and make copies of
and abstracts from the records and books of account of, and visit the properties
of, PSC,  the  Borrower and their  respective  Subsidiaries,  and to discuss the
affairs,  finances and accounts of PSC, the Borrower and any of their respective
Subsidiaries with any of their officers or directors.

     (ii)  In the  case of PSC,  meet at  least  one  each  calendar  year  with
representatives  of the  Administrative  Agent and the Lender Parties to discuss
the  affairs,  finances  and  accounts  of PSC,  the  Borrower  and any of their
respective Subsidiaries.

     (iii)  Permit the  Administrative  Agent and the Lenders to conduct no more
than one commercial finance  examination of PSC and its Subsidiaries during each
calendar year.

     (g) Preparation of Environmental  Reports. At the reasonable request of the
Administrative  Agent made upon reasonable cause, from time to time,  provide to
the Lender  Parties  within 60 days after such  request,  at the  expense of the
Borrower,  an  environmental  site  assessment  report  for  any  of  its or its
Subsidiaries properties described in such request,  prepared by an environmental
consulting firm acceptable to the Required  Lenders,  indicating the presence or
absence of Hazardous Materials and the estimated cost of any compliance, removal
or  remedial  action  in  connection  with  any  Hazardous   Materials  on  such
properties;  without  limiting the generality of the foregoing,  if the Required
Lenders  determines at any time that a material risk exists that any such report
will not be provided within the time referred to above, the Required Lenders may
retain an environmental consulting firm to prepare such report at the expense of
the Borrower, and each of PSC and the Borrower hereby grants and agrees to cause
any of its  Subsidiaries  that owns any  property  described  in such request to
grant at the time of such  request,  to the  Administrative  Agent,  the  Lender
Parties,  such firm and any agents or  representatives  thereof  an  irrevocable
non-exclusive  license,  subject to the rights of  tenants,  to enter onto their
respective properties to undertake such an assessment.

     (h) Keeping of Books.  Keep,  and cause each of its  Subsidiaries  to keep,
proper books of record and account,  in which full and correct  entries shall be
made of all  financial  transactions  and the assets and  business  of PSC,  the
Borrower  and  each  such  Subsidiary  in  accordance  with  generally  accepted
accounting principles in effect from time to time.

     (i) Maintenance of Properties,  Etc. Maintain and preserve,  and cause each
of its  Subsidiaries  to maintain and preserve,  all of its properties  that are
reasonably  necessary in the conduct of its  business in good working  order and
condition, ordinary wear and tear excepted.

     (j) Compliance  with Terms of  Leaseholds.  Make all payments and otherwise
perform all  obligations in respect of all leases of real property to which PSC,
the  Borrower  or any of their  respective  Subsidiaries  is a party,  keep such
leases  in full  force  and  effect  and not  allow  such  leases to lapse or be
terminated  or any rights to renew such  leases to be  forfeited  or  cancelled,
notify the Administrative Agent of any default by any party with respect to such
leases and cooperate with the  Administrative  Agent in all respects to cure any
such default,  and cause each of its Subsidiaries to do so except,  in any case,
where the failure to do so, either  individually or in the aggregate,  could not
reasonably be expected to have a Material Adverse Effect.
<PAGE>

     (k) Performance of Related Documents.  Perform and observe all of the terms
and  provisions  of each  Related  Document to be  performed  or observed by it,
maintain  each such  Related  Document  in full force and effect,  enforce  such
Related Document in accordance with its terms,  take all such action to such end
as may be from time to time  requested  by the  Administrative  Agent and,  upon
request  of the  Administrative  Agent,  make to each  other  party to each such
Related  Document such demands and requests for  information  and reports or for
action as the Borrower is entitled to make under such Related Document.

     (l)  Performance of Material  Contracts.  Perform and observe all the terms
and  provisions  of each  Material  Contract to be  performed or observed by it,
maintain each such Material Contract in full force and effect,  and enforce each
such Material Contract in accordance with its terms.

     (m)  Transactions  with  Affiliates.   Conduct,   and  cause  each  of  its
Subsidiaries to conduct,  all  transactions  otherwise  permitted under the Loan
Documents with any of their Affiliates on terms that are fair and reasonable and
no less favorable to PSC, the Borrower or such  Subsidiary  than it would obtain
in a comparable arm's-length transaction with a Person not an Affiliate.

     (n) Cash  Concentration  Accounts.  In the case of PSC,  maintain main cash
concentration accounts with one or more of the Lenders.

     (o) Further  Assurances.  (i) Upon the request of the Administrative  Agent
following the  occurrence and during the  continuance  of a Default,  and at the
expense of the Borrower,  (A) within 10 days after such request,  furnish to the
Administrative  Agent a description of the real and personal  properties of PSC,
the Borrower and their  respective  Subsidiaries  in detail  satisfactory to the
Administrative  Agent,  (B) within 15 days after such request,  duly execute and
deliver to the Administrative  Agent mortgages,  pledges,  assignments and other
security agreements,  as specified by and in form and substance  satisfactory to
the  Administrative  Agent,  securing payment of all the Obligations of the Loan
Parties under the Loan Documents and constituting  Liens on all such properties,
(C) within 30 days after such request, take whatever action (including,  without
limitation,  the recording of mortgages,  the filing of Uniform  Commercial Code
financing  statements,  the giving of notices and the  endorsement of notices on
title  documents) as may be necessary or reasonably  advisable in the opinion of
the  Administrative  Agent  to  vest  in  the  Administrative  Agent  (or in any
representative  of  the  Administrative   Agent  designated  by  it)  valid  and
subsisting  Liens on the  properties  purported  to be subject  to the  security
agreements  delivered pursuant to this Section 5.01(o),  enforceable against all
third  parties in  accordance  with their  terms,  (D) within 60 days after such
request,  deliver  to the  Administrative  Agent a  signed  copy of a  favorable
opinion,  addressed to the Administrative Agent, of counsel for the Loan Parties
reasonably acceptable to the Administrative Agent as to the matters contained in
clauses (A),  (B) and (C) above,  as to such  security  agreements  being legal,
valid and binding obligations of the Loan Parties enforceable in accordance with
their  terms  and as to such  other  matters  as the  Administrative  Agent  may
reasonably request,  (E) as promptly as practicable after such request,  deliver
to the Administrative Agent surveys meeting the criteria specified in Section

<PAGE>

3.01(l)(xi)(C)  and Mortgage Policies as to each parcel of real property subject
to such request, and (F) at any time and from time to time, promptly execute and
deliver any and all further  instruments  and  documents and take all such other
action as the  Administrative  Agent may deem  desirable in  obtaining  the full
benefits of, or in preserving the Liens of, such security agreements.

     (ii) Upon the  reasonable  request of the  Administrative  Agent and at the
expense  of the  Borrower,  within 30 days after  such  request,  furnish to the
Administrative  Agent an  appraisal of each of the  properties  described in the
Mortgages complying with the requirements of the Federal Financial Institutions,
Reform,  Recovery and Enforcement Act of 1989,  which appraisals shall be from a
person  acceptable  to the Lender  Parties and  otherwise  inform and  substance
satisfactory to the Lender parties.

     (iii) Upon the reasonable (in light of the  circumstances  existing at such
time) request of the  Administrative  Agent, and at the expense of the Borrower,
within  30  days  a  such   request,   (x)  duly  execute  and  deliver  to  the
Administrative  Agent pledges,  assignments  and other security  agreements,  as
specified by and in form and substance satisfactory to the Administrative Agent,
constituting  Liens on the shares of  capital  stock of any  Foreign  Subsidiary
under the laws of the jurisdiction of such Foreign  Subsidiary's  incorporation,
(y) take whatever further action as may be necessary or reasonably  advisable in
the opinion of the Administrative  Agent to vest in the Administrative Agent (or
any  representative  of the  Administrative  Agent  designated  by it) valid and
subsisting  Liens  on such  shares  of  capital  stock  and (z)  deliver  to the
Administrative  Agent a signed copy of a  favorable  opinion,  addressed  to the
Administrative  Agent,  of counsel  for the Loan  Parties  in such  jurisdiction
reasonably acceptable to the Administrative Agent as to the matters contained in
clauses (x) and (y) above, as to such security agreements being legal, valid and
binding  obligations of the Loan Parties  enforceable  in accordance  with their
terms and as to such other matters as the  Administrative  Agent may  reasonably
request.

     (p) Interest Rate Hedging. In the case of the Borrower, enter into prior to
September 30, 1996,  and maintain at all times  thereafter,  interest rate Hedge
Agreements with Persons  acceptable to the  Administrative  Agent,  covering (i)
prior to June 30,  1998 a  notional  amount of not less than 50% of the  initial
Borrowings  hereunder and  (ii) subsequent to June 30, 1998 a notional amount of
not less than 25% of the Advances  outstanding on June 30, 1998 under all of the
Facilities.  For  purposes of  calculating  the  aggregate  principal  amount of
Advances  outstanding  on June 30, 1998, the Working  Capital  Advances shall be
deemed to be outstanding in an aggregate  principal  amount equal to the average
principal amount of Working Capital Advances  outstanding  during the two fiscal
quarters ended on June 30, 1998.

     (q)  Termination  of  Financing   Statements.   Upon  the  request  of  the
Administrative  Agent, and at the expense of the Borrower,  within 10 days after
such request,  furnish to the Administrative Agent proper termination statements
on Form UCC-3 covering such financing statements as the Administrative Agent may
reasonably  request that were listed in the completed  requests for  information
referred to in Section 3.01(l)(ix)(C).
<PAGE>

     (r) IRB Notices.  In the case of PSC,  cause the Company to deliver the IRB
Notices to the  appropriate  parties  under the IRB Documents on the date of the
Initial Extension of Credit.

     (s) IRB Mortgage.  In the case of PSC, (i) use its best efforts to seek all
necessary consents from the Bond Trustee or any other Person, which consents are
necessary to permit the  Administrative  Agent to place a Lien on the Borrower's
interest as contract  vendee  under the IRB  Documents  and (ii)  promptly  upon
receipt of all such consents execute and deliver to the  Administrative  Agent a
mortgage,  in form  and  substance  satisfactory  to the  Administrative  Agent,
together  with  fixture   filings   satisfying  the   requirements   of  Section
3.01(l)(xi)(f),  granting to the Administrative Agent a first-priority  security
interest  in such  contract  vendee's  interest  subject  only to the  Permitted
Encumbrances described in the Oregon Deed of Trust.

     (t) Foreign Subsidiaries. In the case of PSC, within 25 Business Days after
the date hereof,  deliver  evidence in form and  substance  satisfactory  to the
Administrative  Agent of the pledge to the Administrative  Agent for its benefit
and the  benefit of the Secured  Parties,  in  accordance  with the terms of the
Security  Agreement,  of the capital stock of PSC Asia Pacific Pty Limited,  PSC
S.A.R.L.,   TxCom,  PSC  Srl,  Photographic  Sciences  GmbH  and  Foreign  Sales
Corporation.

     SECTION  5.02.  Negative  Covenants.  So long as any Advance  shall  remain
unpaid, any Letter of Credit shall be outstanding or any Lender Party shall have
any Commitment  hereunder,  PSC and the Borrower will not, at any time,  without
the consent of the Required Lenders:

          (a) Liens,  Etc. Create,  incur,  assume or suffer to exist, or permit
     any of its  Subsidiaries to create,  incur,  assume or suffer to exist, any
     Lien  on or  with  respect  to  any  of its  properties  of  any  character
     (including,  without  limitation,  accounts) whether now owned or hereafter
     acquired,  or sign or  file  or  suffer  to  exist,  or  permit  any of its
     Subsidiaries  to sign or  file  or  suffer  to  exist,  under  the  Uniform
     Commercial Code of any jurisdiction,  a financing  statement that names PSC
     or the Borrower or any of their respective  Subsidiaries as debtor, or sign
     or suffer to exist, or permit any of its  Subsidiaries to sign or suffer to
     exist, any security  agreement  authorizing any secured party thereunder to
     file such financing statement, or assign, or permit any of its Subsidiaries
     to  assign,  any  accounts  or other  right to receive  income,  excluding,
     however, from the operation of the foregoing restrictions the following:

                  (i)   Liens created under the Loan Documents;

                  (ii)  Permitted Liens;

                  (iii) Liens existing on the date hereof and described on
                        Schedule 5.02(a)(iii) hereto;

                  (iv)  purchase money Liens upon or in real property or 
                        equipment acquired or held by PSC, the Borrower or 
                        any of their respective Subsidiaries in the ordinary

<PAGE>

          course of business to secure the  purchase  price of such  property or
          equipment  or to  secure  Debt  incurred  solely  for the  purpose  of
          financing the  acquisition,  construction  or  improvement of any such
          property or equipment to be subject to such Liens,  or Liens  existing
          on any such  property or equipment at the time of  acquisition  (other
          than any such Liens created in  contemplation of such acquisition that
          do  not  secure  the  purchase  price),  or  extensions,  renewals  or
          replacements  of any of the foregoing for the same or a lesser amount;
          provided,  however,  that no such  Lien  shall  extend to or cover any
          property  other  than  the  property  or  equipment   being  acquired,
          constructed or improved, and no such extension, renewal or replacement
          shall extend to or cover any property not  theretofore  subject to the
          Lien being extended,  renewed or replaced;  and provided  further that
          the aggregate  principal amount of the Debt secured by Liens permitted
          by this  clause  (iv)  shall not exceed  the  amount  permitted  under
          Section 5.02(b)(iii)(B) at any time outstanding and that any such Debt
          shall not otherwise be prohibited by the terms of the Loan Documents;

               (v) Liens arising in connection with Capitalized Leases permitted
          under Section 5.02(b)(iii)(C); provided that no such Lien shall extend
          to or cover any  Collateral or assets other than the assets subject to
          such Capitalized Leases;

               (vi)  other  Liens  securing  Debt  outstanding  in an  aggregate
          principal amount not to exceed $3,000,000,  provided that no such Lien
          shall extend to or cover any Collateral; and

               (vii) the replacement, extension or renewal of any Lien permitted
          by clauses  (iii)  through  (vi)  above  upon or in the same  property
          theretofore  subject thereto or the replacement,  extension or renewal
          (without  increase in the amount or change in any direct or contingent
          obligor) of the Debt secured thereby.

          (b) Debt. Create,  incur,  assume or suffer to exist, or permit any of
     its  Subsidiaries  to create,  incur,  assume or suffer to exist,  any Debt
     other than:

               (i) in the case of the Borrower,  Debt  incurred  pursuant to the
          Hedge Agreements;

               (ii)  in the  case of any of the  Subsidiaries  (other  than  the
          Borrower and the Foreign  Subsidiaries) of PSC, Debt owed to PSC or to
          a  wholly-owned  Subsidiary of PSC (other than a Foreign  Subsidiary),
          provided  that such Debt is evidenced  by a  promissory  note and such
          promissory  note is pledged to the  Secured  Parties  pursuant  to the
          terms of the Security Agreement; and

               (iii)  in the  case  of  PSC,  the  Borrower  and  any  of  their
          respective Subsidiaries,

                    (A) Debt under the Loan Documents,

<PAGE>

                    (B) Debt secured by Liens  permitted by  Section 5.02(a)(iv)
               not  to  exceed  in  the   aggregate   $3,000,000   at  any  time
               outstanding,

                    (C)  Capitalized  Leases  not to  exceed  in  the  aggregate
               $3,000,000 at any time outstanding,

                    (D) the Surviving  Debt, and any Debt extending the maturity
               of,  or  refunding  or  refinancing,  in whole  or in  part,  any
               Surviving  Debt,  provided that the terms of any such  extending,
               refunding or refinancing  Debt, and of any agreement entered into
               and  of  any  instrument  issued  in  connection  therewith,  are
               otherwise  permitted by the Loan  Documents and provided  further
               that the  principal  amount of such  Surviving  Debt shall not be
               increased   above  the  principal   amount  thereof   outstanding
               immediately  prior to such  extension,  refunding or refinancing,
               and the  direct and  contingent  obligors  therefor  shall not be
               changed,  as a result of or in  connection  with such  extension,
               refunding or refinancing,

                    (E) Debt in respect of the Subordinated  Debt and the Seller
               Note; and

                    (F)  indorsement  of negotiable  instruments  for deposit or
               collection  or similar  transactions  in the  ordinary  course of
               business;

               (iv) in the case of PSC, Debt owed to the Borrower, provided that
          such Debt is evidenced by a promissory  note and such  promissory note
          is  pledged  to the  Secured  Parties  pursuant  to the  terms  of the
          Security Agreement; and

               (v) in the case of PSC and the Borrower,  unsecured Debt incurred
          in the ordinary course of business for the deferred  purchase price of
          property or services,  maturing within one year from the date created,
          and aggregating,  on a Consolidated basis, not more than $3,000,000 at
          any one time outstanding.


          (c) Lease Obligations.  Create,  incur,  assume or suffer to exist, or
     permit any of their  respective  Subsidiaries to create,  incur,  assume or
     suffer to exist,  any  obligations  as lessee (i) for the rental or hire of
     real or  personal  property  in  connection  with any  sale  and  leaseback
     transaction,  or  (ii) for  the  rental or hire of other  real or  personal
     property  of any  kind  under  leases  or  agreements  to  lease  including
     Capitalized  Leases  having an original term of one year or more that would
     cause the direct and contingent liabilities of PSC and its Subsidiaries, on
     a  Consolidated  basis,  in  respect  of all  such  obligations  to  exceed
     $3,000,000  payable in any period of 12  consecutive  months.  

          (d) Mergers,  Etc. Merge into or consolidate with any Person or permit
     any Person to merge into it, or permit any of their respective Subsidiaries
     to do so, except that (i) the Borrower and its  Subsidiaries may consummate
     the Merger, (ii) any Subsidiary of PSC
<PAGE>

     (other  than the  Borrower)  may merge into or  consolidate  with any other
     Subsidiary of PSC (other than the Borrower or a Foreign  Subsidiary) or PSC
     provided that, in the case of any such merger or consolidation,  the Person
     formed  by  such  merger  or  consolidation   shall  be  either  PSC  or  a
     wholly-owned  Subsidiary of PSC,  (iii) any of the Borrower's  Subsidiaries
     may  merge  into  PSC;  (iv)  any  Foreign  Subsidiary  may  merge  into or
     consolidate with any other Foreign  Subsidiary,  provided that, in the case
     of such  merger or  consolidation,  the  Person  formed  by such  merger or
     consolidation  shall be a  wholly-owned  Subsidiary of PSC; and (v) PSC may
     merge into or  consolidate  with any other Person in a merger  permitted by
     Section  5.01(f)(i) or (vii),  provided that, in the case of such merger or
     consolidation,  PSC or such Subsidiary shall be the surviving  corporation;
     provided,  however,  that in each case,  immediately  after  giving  effect
     thereto,  no event shall occur and be continuing that constitutes a Default
     and, in the case of any merger or  consolidation  to which the  Borrower or
     PSC is a party,  the Borrower or PSC, as the case may be, is the  surviving
     corporation.

          (e) Sales, Etc. of Assets. Sell, lease,  transfer or otherwise dispose
     of, or permit any of their respective Subsidiaries to sell, lease, transfer
     or  otherwise  dispose of, any assets or grant any option or other right to
     purchase, lease or otherwise acquire any assets, except:

               (i) sales of Inventory in the ordinary course of its business,

               (ii)  in a  transaction  authorized  by  subsection (d)  of  this
          Section,

               (iii) sales of assets for cash and for fair value in an aggregate
          amount not to exceed $1,000,000 in any Fiscal Year,

               (iv)  the  sale of any  asset  by PSC or any of its  Subsidiaries
          (other than a bulk sale of inventory and a sale of  Receivables  other
          than delinquent  accounts for collection purposes only) so long as (A)
          the  purchase  price paid to PSC,  or such  Subsidiary  for such asset
          shall be no less than the fair market  value of such asset at the time
          of such sale,  (B) the purchase  price for such asset shall be paid to
          PSC or such Subsidiary  solely in cash and (C) the aggregate  purchase
          price paid to PSC and all of its  Subsidiaries  for such asset and all
          other assets sold by PSC and its  Subsidiaries  during the same Fiscal
          Year pursuant to this clause (iv) shall not exceed $1,000,000, and

               (v) so long as no  Default  shall  occur and be  continuing,  the
          grant  of any  option  or  other  right  to  purchase  any  asset in a
          transaction   which  would  be  permitted   under  the  provisions  of
          clause (iv) above,

     provided that in the case of sales of assets pursuant to clause (iv) above,
     PSC and the Borrower  shall, on the date of receipt by PSC, the Borrower or
     any of their  respective  Subsidiaries  of the Net Cash  Proceeds from such
     sale,  prepay  the  Advances  pursuant  to,  and in the amount and order of
     priority set forth in, Section 2.06(b)(ii), as specified therein.

<PAGE>

     (f)  Investments  in Other  Persons.  Make or hold,  or  permit  any of its
Subsidiaries  to make or hold,  any  Investment  in any Person  other than:  

          (i)  Investments  by PSC and its  Subsidiaries  in their  Subsidiaries
     outstanding on the date hereof and additional  investments in  wholly-owned
     Subsidiaries  in an aggregate  amount  invested from the date hereof not to
     exceed $5,000,000; provided, however, that no more than an aggregate amount
     equal  to  $3,000,000  can be  invested  from the date  hereof  in  Foreign
     Subsidiaries;  provided,  further,  that with respect to Investments in any
     newly acquired or created wholly-owned  Subsidiary,  such Subsidiary shall
     become a  Subsidiary  Guarantor  pursuant  to the  terms of the  Subsidiary
     Guaranty and an  additional  grantor  pursuant to the terms of the Security
     Agreement and Intellectual Property Security Agreement;

          (ii) (A) loans to employees of PSC and its  Subsidiaries in connection
     with  purchases of stock of PSC pursuant to the PSC Stock Option Plan in an
     aggregate principal amount not to exceed $1,000,000 at any time outstanding
     and (B) loans and  advances  to  employees  in the  ordinary  course of the
     business  of  PSC,  the  Borrower  and  their  respective  Subsidiaries  as
     presently conducted in an aggregate principal amount not to exceed $500,000
     at any time outstanding;

          (iii)   Investments   by  PSC,  the  Borrower  and  their   respective
     Subsidiaries in Cash Equivalents;

          (iv)  Investments  by the  PSC,  the  Borrower  and  their  respective
     Subsidiaries Hedge Agreements permitted under Section 5.01(p);

          (v)  Investments  consisting  of  intercompany  Debt  permitted  under
     Section 5.02(b)(ii);

          (vi)  Investments  (A)  existing on the date hereof and  described  on
     Schedule 4.01(ii) hereto or (B) otherwise disclosed on such Schedule; and

          (vii) other  Investments in an aggregate amount invested not to exceed
     $3,000,000 in Persons other than wholly-owned Subsidiaries;  provided that,
     (1) any such  Investments  in any newly  acquired or created  Subsidiary of
     PSC, the Borrower or any of their  respective  Subsidiaries  shall become a
     Subsidiary Guarantor pursuant to the terms of the Subsidiary Guaranty and a
     collateral  grantor  pursuant to the terms of the  Security  Agreement  and
     Intellectual Property Security Agreement,  (2) immediately before and after
     giving effect thereto,  no Default shall have occurred and be continuing or
     would  result  therefrom;  and  (3) any  business  acquired  or invested in
     pursuant to this clause (vii)  shall be in the same line of business as the
     business of PSC, the Borrower or any of their respective Subsidiaries.
<PAGE>

          (g) Dividends,  Etc. Declare or pay any dividends,  purchase,  redeem,
     retire,  defease or otherwise acquire for value any of its capital stock or
     any  warrants,  rights or options to acquire  such  capital  stock,  now or
     hereafter outstanding, return any capital to its stockholders as such, make
     any  distribution  of assets,  capital stock,  warrants,  rights,  options,
     obligations or securities to its  stockholders as such or issue or sell any
     capital  stock or any  warrants,  rights or options to acquire such capital
     stock,  or permit any of its  Subsidiaries  to do any of the  foregoing  or
     permit any of its  Subsidiaries  to purchase,  redeem,  retire,  defease or
     otherwise  acquire  for  value any  capital  stock of the  Borrower  or any
     warrants,  rights or options to acquire such  capital  stock or to issue or
     sell any capital stock or any  warrants,  rights or options to acquire such
     capital  stock,  except  that,  (i) PSC may declare and pay  dividends  and
     distributions  payable  only  in  common  stock  of  PSC,  (ii)  a  Foreign
     Subsidiary may declare and pay dividends and distributions to PSC, provided
     that the Secured  Parties shall have a perfected  first  priority  security
     interest in the property  comprising  such  dividends or  distribution  and
     (iii) PSC may acquire shares of its common stock for an aggregate  purchase
     price during the period from the date hereof through the  Termination  Date
     not to exceed  $3,000,000,  provided that, at the time of such  acquisition
     and immediately after giving effect thereto, (x) the excess of Consolidated
     total assets over  Consolidated  total  liabilities  shall not be less than
     $44,000,000 and (y) no Default shall have occurred and be continuing.

          (h)  Change  in  Nature  of  Business.  Make,  or  permit  any  of its
     Subsidiaries  to make, any material change in the nature of its business as
     carried on at the date hereof.

          (i) Charter  Amendments.  Amend, or permit any of its  Subsidiaries to
     amend, its certificate of incorporation or bylaws, other than any amendment
     that could not reasonably be expected to have a Material Adverse Effect.

          (j)  Accounting  Changes.  Make  or  permit,  or  permit  any  of  its
     Subsidiaries to make or permit,  any change in  (i) accounting  policies or
     reporting practices,  except as required or permitted by generally accepted
     accounting principles or (ii) the Fiscal Year.

          (k) Prepayments,  Etc. of Debt. Prepay, redeem,  purchase,  defease or
     otherwise satisfy prior to the scheduled maturity thereof in any manner, or
     make any  payment in  violation  of any  subordination  terms of, any Debt,
     other than (i) the prepayment of the Advances in accordance  with the terms
     of this  Agreement and (ii) regularly  scheduled or required  repayments or
     redemptions of Surviving Debt, or amend, modify or change in any manner any
     term or condition  of any  Surviving  Debt,  the  Subordinated  Debt or the
     Seller Note, or permit any of its  Subsidiaries  to do any of the foregoing
     other than to prepay any Debt payable to the Borrower.

          (l)  Amendment,  Etc. of Related  Documents.  Cancel or terminate  any
     Related  Document or consent to or accept any  cancellation  or termination
     thereof, amend, modify or change in any manner any term or condition of any
     Related Document or give any consent, waiver or approval thereunder,  waive
     any  default  under or any breach of any term or  condition  of any Related
     Document,  agree in any  manner to any  other  amendment,  modification  or
     change of any term or condition  of any Related  Document or take any other
     action in connection with any Related Document that would materially impair
     the value of the  interest or rights of PSC or the Borrower  thereunder  or
     that would materially impair the rights or interests of the  Administrative
     Agent or any Lender Party,  or permit any of its  Subsidiaries to do any of
     the foregoing.
<PAGE>


          (m)  Amendment,  Etc. of Material  Contracts.  Cancel or terminate any
     Material  Contract or consent to or accept any  cancellation or termination
     thereof,  amend or  otherwise  modify  any  Material  Contract  or give any
     consent,  waiver or approval thereunder,  waive any default under or breach
     of any  Material  Contract,  agree in any  manner to any  other  amendment,
     modification or change of any term or condition of any Material Contract or
     take any other action in connection  with any Material  Contract that would
     materially  impair  the value of the  interest  or  rights of the  Borrower
     thereunder  or that would  materially  impair the interest or rights of the
     Administrative Agent or any Lender Party, or permit any of its Subsidiaries
     to do any of the foregoing.

          (n) Negative  Pledge.  Enter into or suffer to exist, or permit any of
     its   Subsidiaries  to  enter  into  or  suffer  to  exist,  any  agreement
     prohibiting or conditioning the creation or assumption of any Lien upon any
     of its property or assets other than (i) in favor of the Secured Parties or
     (ii) in  connection with (A) any Surviving Debt and any Debt outstanding on
     the date  such  Subsidiary  first  becomes a  Subsidiary  or  (B) any  Debt
     permitted by Section 5.02(b)(iii)(F) hereof.

          (o) Partnerships,  New  Subsidiaries.  (i) Become a general partner in
     any general or limited  partnership or joint venture,  or permit any of its
     Subsidiaries  to do so, other than any  Subsidiary the sole assets of which
     consist of its interest in such partnership or joint venture or (ii) create
     any new  Subsidiaries  unless such newly created  Subsidiary shall become a
     Subsidiary  Guarantor pursuant to the terms of the Subsidiary  Guaranty and
     an additional  grantor pursuant to the terms of the Security  Agreement and
     the Intellectual Property Security Agreement.

          (p)   Speculative   Transactions.   Engage,   or  permit  any  of  its
     Subsidiaries to engage, in any transaction  involving  commodity options or
     futures contracts or any similar speculative  transactions except for Hedge
     Agreements permitted under Section 5.02(p).

          (q) Capital  Expenditures.  Make, or permit any of its Subsidiaries to
     make, any Capital  Expenditures  that would cause the aggregate of all such
     Capital Expenditures made by PSC, the Borrower and its Subsidiaries in any 
     period set forth below to exceed the amount set forth below for such period
<PAGE>


          Period                                                        Amount

Effective Date through 12/31/9 ..........................            $ 7,000,000

Fiscal Year Ending 12/31/97 .............................            $12,000,000

Fiscal Year Ending 12/31/98 .............................            $15,000,000

Fiscal Year Ending 12/31/99 .............................            $18,000,000

Fiscal Year Ending 12/31/2000 ...........................            $19,000,000

Fiscal Year Ending 12/31/2001 ...........................            $15,000,000

1/1/2002 through 6/30/2002 ..............................            $ 7,500,000




     SECTION 5.03. Reporting  Requirements.  So long as any Advance shall remain
unpaid, any Letter of Credit shall be outstanding or any Lender Party shall have
any  Commitment  hereunder,  PSC and the  Borrower  will  furnish  to the Lender
Parties:

          (a) Default  Notice.  As soon as possible  and in any event within two
     Business Days after  obtaining  knowledge of the occurrence of each Default
     or any  event,  development  or  occurrence  reasonably  likely  to  have a
     Material  Adverse  Effect  continuing  on the  date  of such  statement,  a
     statement of the chief  financial  officer of PSC setting  forth details of
     such  Default and the action  that PSC has taken and  proposes to take with
     respect thereto.  

          (b) Monthly  Financials.  As soon as available and in any event within
     45 days after the end of each month,  a  Consolidated  balance sheet of PSC
     and its Subsidiaries as of the end of such month and Consolidated statement
     of  income  and a  Consolidated  statement  of  cash  flows  of PSC and its
     Subsidiaries for the period commencing at the end of the previous month and
     ending with the end of such month and Consolidated  statement of income and
     a Consolidated  statement of cash flows of PSC and its Subsidiaries for the
     period  commencing  at the end of the previous  Fiscal Year and ending with
     the end of such month,  duly  certified by the chief  financial  officer of
     PSC.

          (c) Quarterly Financials. As soon as available and in any event within
     45 days  after the end of each of the first  three  quarters of each Fiscal
     Year,  Consolidated balance sheet of PSC and its Subsidiaries as of the end
     of such quarter and  Consolidated  statement  of income and a  Consolidated
     statement  of  cash  flows  of PSC  and its  Subsidiaries  for  the  period
     commencing  at the end of the previous  fiscal  quarter and ending with the
     end of such  fiscal  quarter  and  Consolidated  statement  of income and a
     Consolidated  statement of cash flows of PSC and its  Subsidiaries  for the
     period  commencing  at the end of the previous  Fiscal Year and ending with
     the end of such quarter, setting forth in each case in comparative form the

<PAGE>

     corresponding  figures for the corresponding period of the preceding Fiscal
     Year and the corresponding figures from the budgets for such period and for
     the Fiscal Year which  includes such period,  all in reasonable  detail and
     duly  certified  (subject  to  year-end  audit  adjustments)  by the  chief
     financial  officer of PSC as having been prepared in accordance  with GAAP,
     together with (i) a certificate of said officer stating that no Default has
     occurred and is continuing or, if a Default has occurred and is continuing,
     a statement as to the nature  thereof and the action that PSC has taken and
     proposes  to  take  with  respect  thereto  and  (ii) a  schedule  in  form
     satisfactory to the Administrative Agent of the computations used by PSC in
     determining  compliance  with the covenants  contained in Sections  5.04(a)
     through (d),  provided  that in the event of any change in GAAP used in the
     preparation  of such  financial  statements,  PSC shall  also  provide,  if
     necessary  for  the  determination  of  compliance  with  Section  5.04,  a
     statement of reconciliation conforming such financial statements to GAAP.

          (d) Annual Financials. As soon as available and in any event within 90
     days after the end of each Fiscal  Year,  a copy of the annual audit report
     for such year for PSC and its Subsidiaries,  including therein Consolidated
     and consolidating  balance sheets of PSC and its Subsidiaries as of the end
     of such Fiscal Year and Consolidated and consolidating statements of income
     and a Consolidated  statement of cash flows of PSC and its Subsidiaries for
     such  Fiscal  Year,  in each case  setting  forth in  comparative  form the
     corresponding  figures  for the  prior  Fiscal  Year and the  corresponding
     figures  from the budget for such Fiscal Year and in each case  accompanied
     (in the  case of such  Consolidated  financial  statements)  by an  opinion
     acceptable  to the  Required  Lenders  of  Arthur  Anderson  LLP  or  other
     independent  public  accountants of recognized  standing  acceptable to the
     Required Lenders, together with (i) a letter of such accounting firm to the
     Lender  Parties  stating  that in the  course of the  regular  audit of the
     business of PSC and its  Subsidiaries,  which audit was  conducted  by such
     accounting firm in accordance with generally  accepted auditing  standards,
     such  accounting firm has obtained no knowledge that a Default has occurred
     and is continuing, or if, in the opinion of such accounting firm, a Default
     has occurred and is continuing,  a statement as to the nature thereof, (ii)
     a  schedule  in  form  satisfactory  to  the  Administrative  Agent  of the
     computations used by such accountants in determining, as of the end of such
     Fiscal Year,  compliance with the covenants  contained in Sections  5.04(a)
     through (d),  provided  that in the event of any change in GAAP used in the
     preparation  of such  financial  statements,  PSC shall  also  provide,  if
     necessary  for  the  determination  of  compliance  with  Section  5.04,  a
     statement of  reconciliation  conforming such financial  statements to GAAP
     and (iii) a certificate of the chief financial  officer of PSC stating that
     no Default has occurred and is continuing or, if a default has occurred and
     is continuing, a statement as to the nature thereof and the action that PSC
     has taken and proposes to take with respect thereto.

          (e) Annual  Forecasts.  As soon as available and in any event no later
     than 30 days  after the end of each  Fiscal  Year,  forecasts  prepared  by
     management of PSC, in form reasonably  satisfactory  to the  Administrative
     Agent, of balance sheets,  income  statements and cash flow statements on a
     quarterly basis for the Fiscal Year following such Fiscal Year then ended.
<PAGE>

          (f) ERISA Events and ERISA  Reports.  Promptly and in any event within
     10 days after any Loan Party or any ERISA  Affiliate knows or has reason to
     know that any ERISA Event has occurred,  a statement of the chief financial
     officer of PSC  describing  such ERISA Event and the action,  if any,  that
     such Loan Party or such ERISA Affiliate has taken and proposes to take with
     respect  thereto  and  (ii) on the  date any  records,  documents  or other
     information must be furnished to the PBGC with respect to any Plan pursuant
     to  Section  4010  of  ERISA,  a  copy  of  such  records,   documents  and
     information.

          (g) Plan Terminations.  Promptly and in any event within five Business
     Days after receipt thereof by any Loan Party or any ERISA Affiliate, copies
     of each notice from the PBGC stating its intention to terminate any Plan or
     to have a trustee appointed to administer any Plan.

          (h) Actuarial Reports. Promptly upon receipt thereof by any Loan Party
     or any ERISA Affiliate, a copy of the annual actuarial valuation report for
     each Plan the funded  current  liability  percentage (as defined in Section
     302(d)(8)  of  ERISA)  of which is less  than 90% or the  unfunded  current
     liability of which exceeds $250,000.

          (i) Plan  Annual  Reports.  Promptly  and in any event  within 30 days
     after the filing thereof with the Internal Revenue Service,  copies of each
     Schedule B (Actuarial  Information) to the annual report (Form 5500 Series)
     with respect to each Plan.

          (j) Multiemployer Plan Notices.  Promptly and in any event within five
     Business  Days  after  receipt  thereof  by any  Loan  Party  or any  ERISA
     Affiliate from the sponsor of a Multiemployer  Plan,  copies of each notice
     concerning  (i) the   imposition  of  Withdrawal   Liability  by  any  such
     Multiemployer  Plan,  (ii) the  reorganization  or termination,  within the
     meaning of Title IV of ERISA, of any such  Multiemployer  Plan or (iii) the
     amount of liability incurred,  or that may be incurred,  by such Loan Party
     or any ERISA Affiliate in connection with any event described in clause (i)
     or (ii).

          (k) Litigation. Promptly after the commencement thereof, notice of all
     actions, suits, investigations, litigation and proceedings before any court
     or  governmental   department,   commission,   board,  bureau,   agency  or
     instrumentality,  domestic or foreign,  affecting  any Loan Party or any of
     its  Subsidiaries  of the type described in Section  4.01(j),  and promptly
     after the occurrence thereof,  notice of any material adverse change in the
     status or the financial effect on any Loan Party or any of its Subsidiaries
     of the Disclosed Litigation from that described on Schedule 3.01(g).

          (l) Securities Reports.  Promptly after the sending or filing thereof,
     copies of all proxy statements,  financial  statements and reports that any
     Loan Party or any of its Subsidiaries sends to its stockholders, and copies
     of  all  regular,  periodic  and  special  reports,  and  all  registration
     statements,  that any Loan Party or any of its Subsidiaries  files with the
     Securities and Exchange  Commission or any governmental  authority that may
     be substituted therefor, or with any national securities exchange.

<PAGE>

          (m) Creditor Reports. Promptly after the furnishing thereof, copies of
     any statement or report  furnished to any other holder of the securities of
     any Loan Party or of any of its  Subsidiaries  pursuant to the terms of any
     indenture,  loan or credit or similar agreement and not otherwise  required
     to be furnished to the Lender Parties  pursuant to any other clause of this
     Section 5.03.

          (n) Agreement  Notices.  Promptly upon receipt thereof,  copies of all
     notices,  requests and other documents received by any Loan Party or any of
     its  Subsidiaries  under or pursuant  to any  Related  Document or Material
     Contract or  indenture,  loan or credit or similar  agreement  regarding or
     related to any breach or  default by any party  thereto or any other  event
     that could  materially  impair the value of the  interests or the rights of
     any Loan Party or otherwise  have a Material  Adverse  Effect and copies of
     any  amendment,  modification  or waiver of any  provision  of any  Related
     Agreement  or  Material  Contract or  indenture,  loan or credit or similar
     agreement and, from time to time upon request by the Administrative  Agent,
     such  information  and  reports  regarding  the Related  Documents  and the
     Material Contracts as the Administrative Agent may reasonably request.

          (o)  Revenue  Administrative  Agent  Reports.  Within  10  days  after
     receipt,  copies of all  Revenue  Administrative  Agent  Reports  (Internal
     Revenue  Service  Form 886),  or other  written  proposals  of the Internal
     Revenue  Service,  that propose,  determine or otherwise set forth positive
     adjustments  to the Federal  income tax liability of the  affiliated  group
     (within the meaning of Section  1504(a)(1) of the Internal Revenue Code) of
     which PSC is a member aggregating $1,000,000 or more.

          (p) Tax Certificates.  Promptly, and in any event within five Business
     Days after the due date  (with  extensions)  for  filing the final  Federal
     income tax return in respect of each taxable  year, a  certificate  (a "Tax
     Certificate"),  signed by the President or the chief  financial  officer of
     PSC,  stating that the common  parent of the  affiliated  group (within the
     meaning of Section 1504(a)(1) of the Internal Revenue Code) of which PSC is
     a  member  has  paid  to the  Internal  Revenue  Service  or  other  taxing
     authority,  or to PSC,  the  full  amount  that  such  affiliated  group is
     required to pay in respect of Federal income tax for such year and that PSC
     and its  Subsidiaries  have received any amounts  payable to them, and have
     not paid amounts in respect of taxes (Federal,  state, local or foreign) in
     excess of the amount they are required to pay,  under the Tax Agreements in
     respect of such taxable year.

          (q)  Environmental   Conditions.   Promptly  after  the  assertion  or
     occurrence  thereof,  notice of any Environmental  Action against or of any
     noncompliance  by any  Loan  Party  or any of  its  Subsidiaries  with  any
     Environmental  Law or  Environmental  Permit that (i) could  reasonably  be
     expected  to have a Material  Adverse  Effect or  (ii) cause  any  property
     described in the Mortgages to be subject to any  restrictions on ownership,
     occupancy, use or transferability under any Environmental Law.

          (r) Real  Property.  As soon as  available  and in any event within 30
     days  after  the  end  of  each  Fiscal   Year,   a  report   supplementing
     Schedules 4.01(ff) and 4.01(gg) hereto,  including an identification of all
     real and leased property disposed of by PSC or any of its Subsidiaries 

<PAGE>

     during such  Fiscal  Year,  a list and  description  (including  the street
     address,  county or other relevant jurisdiction,  state, record owner, book
     value  thereof,  and in the case of leases  of  property,  lessor,  lessee,
     expiration  date and  annual  rental  cost  thereof)  of all real  property
     acquired or leased during such Fiscal Year and a description  of such other
     changes in the  information  included in such Schedules as may be necessary
     for such Schedules to be accurate and complete.

          (s)  Insurance.  As soon as available  and in any event within 30 days
     after the end of each  Fiscal  Year,  a report  summarizing  the  insurance
     coverage  (specifying type, amount and carrier) in effect for the each Loan
     Party and its  Subsidiaries  and containing such additional  information as
     any Lender Party (through the Administrative Agent) may reasonably specify.

          (t) Borrowing Base Certificate.  As soon as available and in any event
     within 10  Business  Days after the end of each  month,  a  Borrowing  Base
     Certificate,  as at the end of the previous  month,  certified by the chief
     financial officer of the Borrower.

          (u) Management  Letters.  As soon as available and in any event within
     10  Business  Days after the  receipt  thereof,  copies of any  "management
     letter" or similar  letter  received by the  Borrower,  PSC or the board of
     directors (or committee thereof) of either such Person from its independent
     public accountants.

          (v) Other Information. Such other information respecting the business,
     condition (financial or otherwise), operations,  performance, properties or
     prospects of any Loan Party or any of its  Subsidiaries as any Lender Party
     (through  the  Administrative  Agent)  may  from  time to  time  reasonably
     request.

     SECTION  5.04.  Financial  Covenants.  So long as any Advance  shall remain
unpaid, any Letter of Credit shall be outstanding or any Lender Party shall have
any Commitment hereunder, PSC will:

     (a) Fixed Charge Coverage Ratio. Maintain at the end of each fiscal quarter
of PSC a ratio of (i) Consolidated  EBITDA for the most recently  completed four
fiscal quarters of PSC (provided however that if such four fiscal quarter period
includes  any or all of the  fiscal  quarters  ending  on  September  30,  1995,
December 31, 1995, March 31, 1996 or June 30, 1996, Consolidated EBITDA shall be
calculated  by using the Pro Forma  EBITDA for each such fiscal  quarter in such
four fiscal quarter period) less Capital  Expenditures  made during such period,
less the aggregate amount of federal, state, local and foreign taxes paid by PSC
and its  Subsidiaries  during such  period to the (ii) sum of (w) cash  interest
payable by PSC and its Subsidiaries on all Debt during such period plus (x) cash
rentals payable under  Capitalized  Leased during such period plus (y) principal
amounts of all Funded Debt payable,  in each case,  by PSC and its  Subsidiaries
during  such period plus (z) the  aggregate  purchase  price paid by PSC and its
Subsidiaries during such period to purchase capital stock of PSC as permitted by
Section  5.02(g),  of not less than the ratio  set forth  below for such  period
(provided,  however, that if such four fiscal quarter period includes any or all
of the fiscal quarters ending on September 30, 1995, December 31, 1995, 


<PAGE>

March 31, 1996 or June 30, 1996, (i) Capital  Expenditures  for such four fiscal
quarter  period  shall  be the  lesser  of (A) the  product  of  actual  Capital
Expenditures  made during such period  multiplied by a fraction the numerator of
which is four and the denominator of which is the number of fiscal quarters that
have elapsed since the Closing Date and (B)  $12,000,000,  (ii) interest expense
for such four fiscal quarter period shall be the product of the actual amount of
interest expense payable during such period since the Closing Date multiplied by
     a fraction the numerator of which is four and the  denominator  of which is
     the number of fiscal  quarters that have elapsed since the Closing Date and
     (iii)  aggregate taxes paid during such four fiscal quarter period shall be
     the product of the actual  taxes paid during such period  since the Closing
     Date  multiplied  by a  fraction  the  numerator  of  which is four and the
     denominator  of which is the number of fiscal  quarters  which have elapsed
     since the Closing): 

      Four Fiscal Quarters Ending     In Ratio

           12/31/96 ................   1.15x

            3/31/97 ................   1.15x

            6/30/97 ................   1.15x

            9/30/97 ................   1.15x

           12/31/97 ................   1.15x

            3/31/98 ................   1.15x

            6/30/98 ................   1.15x

            9/30/98 ................   1.15x

           12/31/98 ................   1.15x

3/31/99 and each period thereafter .   1.25x

 


          (b) Total Debt to EBITDA  Ratio.  Maintain  at the end of each  fiscal
     quarter of PSC a Total Debt Ratio for such date of not more than the amount
     set forth below for such period;


     Four Fiscal Quarters Ending In      Ratio

   Effective date to 12/31/96 ......     5.0x

             3/31/97 ...............     4.75x

             6/30/97 ...............     4.75x

             9/30/97 ...............     4.25x

<PAGE>


            12/31/97 ...............     4.25x

             3/31/98 ...............     3.75x

             6/30/98 ...............     3.75x

             9/30/98 ...............     3.75x

            12/31/98 ...............     3.75x

     3/31/98 and thereafter ........     3.25x


          (c) Senior  Debt to EBITDA  Ratio.  Maintain at the end of each fiscal
     quarter  of PSC a  ratio  of  Senior  Debt  of  PSC  and  its  Subsidiaries
     outstanding on the last day of such fiscal quarter to  Consolidated  EBITDA
     for the most  recently  completed  four fiscal  quarters of PSC  (provided,
     however, that (i) if such four fiscal quarter period includes any or all of
     the fiscal quarters ending on September 30, 1995,  December 31, 1995, March
     31, 1996 or June 30, 1996, Consolidated EBITDA shall be calculated by using
     the Pro Forma  EBITDA  for each such  fiscal  quarter  in such four  fiscal
     quarter  period,  and  (ii)  for  purposes  of  calculating  the  aggregate
     principal  amount of Senior Debt  outstanding on the last day of any fiscal
     quarter,  the aggregate  principal amount of Working Capital Advances shall
     be deemed to be  outstanding in a aggregate  principal  amount equal to the
     average principal amount of Working Capital Advances outstanding during the
     two fiscal  quarters ended on such last day) of not more than the ratio set
     forth below for such period:


 Four Fiscal Quarters Ending In         Ratio

   Effective Date to 12/31/96 ......     3.75x

             3/31/97 ...............     3.50x

             6/30/97 ...............     3.50x


             9/30/97 ...............     3.0x

            12/31/97 ...............     3.0x

             3/31/98 ...............     2.50x

             6/30/98 ...............     2.50x

             9/30/98 ...............     2.50x

            12/31/98 ...............     2.25x

     3/31/99 and thereafter ........     2.0x


          (d)  Interest  Coverage  Ratio.  Maintain as of the end of each fiscal
     quarter of PSC a ratio of (i)  Consolidated  EBITDA  for the most  recently
     completed four fiscal quarters of PSC (provided, however, that if such four
     fiscal quarter period includes any or all of the

<PAGE>



     fiscal quarters ending on September 30, 1995,  December 31, 1995, March 31,
     1996 or June 30, 1996, Consolidated EBITDA shall be calculated by using the
     Pro Forma EBITDA for each such fiscal  quarter in such four fiscal  quarter
     period)  to (ii)  Interest  Expense  of PSC and its  Subsidiaries  for such
     period  of not  less  than the  ratio  set  forth  below  for  such  period
     (provided, however, that if such four fiscal quarter period includes any or
     all of the fiscal quarters ending on September 30, 1995, December 31, 1995,
     March 31,  1996 or June 30,  1996,  Interest  Expense  for such four fiscal
     quarter  period shall be actual  Interest  Expense during such period since
     the Closing Date  multiplied  by a fraction the  numerator of which is four
     and the  denominator  of which is the number of fiscal  quarters  that have
     elapsed since the Closing Date):


 Four Fiscal Quarters Ending In         Ratio

   Effective Date to 12/31/96 ........   2.0x

             3/31/97 .................   2.50x

             6/30/97 .................   2.50x

             9/30/97 .................   2.50x

            12/31/97 .................   2.50x

             3/31/98 .................   3.0x

             6/30/98 .................   3.0x

             9/30/98 .................   3.0x

            12/30/98 .................   3.0x

     3/31/99 and thereafter ..........   3.50x


     (e) Net Worth. Maintain at all times an excess of Consolidated total assets
over  Consolidated  total  liabilities,  in each case,  of the  Borrower and its
Subsidiaries of not less than (i) $34,000,000  plus (ii) 75% of Consolidated net
income of PSC and its  Subsidiaries for during the period after June 30, 1996 to
and including each date of determination computed on a cumulative basis for
said entire period. 

                                   ARTICLE VI

                                EVENTS OF DEFAULT

     SECTION 6.01. Events of Default. If any of the following events ("Events of
Default") shall occur and be continuing:

     (a) (i) the  Borrower  shall fail to pay any  principal of any Advance when
the same shall become due and payable or (ii) the Borrower shall fail to pay any
interest on any
<PAGE>

     Advance,  or any Loan Party shall fail to make any other  payment under any
     Loan Document, in each case under this clause (ii) within two Business Days
     after the same becomes due and payable; or

          (b) any  representation  or warranty made by any Loan Party (or any of
     its officers)  under or in connection with any Loan Document shall prove to
     have been incorrect in any material respect when made or confirmed; or

          (c) the Borrower  shall fail to perform or observe any term,  covenant
     or agreement contained in Section 2.14, 5.01(e), (f), (g), (m), (o) or (p),
     5.02, 5.03 or 5.04; or

          (d) any Loan Party shall fail to perform  any other term,  covenant or
     agreement  contained  in any Loan  Document on its part to be  performed or
     observed if such  failure  shall  remain  unremedied  for 10 days after the
     earlier of the date on which  (A) a  Responsible  Officer of any Loan Party
     becomes aware of such failure or (B) written notice thereof shall have been
     given to the Borrower by the Administrative Agent or any Lender Party; or

          (e) any Loan  Party or any of its  Subsidiaries  shall fail to pay any
     principal of, premium or interest on or any other amount payable in respect
     of any Debt that is  outstanding  in a principal  or notional  amount of at
     least  $1,000,000  either  individually  or in the aggregate (but excluding
     Debt  outstanding  hereunder) of such Loan Party or such Subsidiary (as the
     case may be),  when the same becomes due and payable  (whether by scheduled
     maturity, required prepayment,  acceleration,  demand or otherwise); or any
     other event shall occur or  condition  shall exist under any  agreement  or
     instrument  relating  to any such Debt,  in each case if the effect of such
     event or condition is to accelerate,  or to permit the acceleration of, the
     maturity  of such Debt or  otherwise  to cause,  or to  permit  the  holder
     thereof to cause,  such Debt to mature;  or any such Debt shall be declared
     to be due and payable or required to be prepaid or redeemed  (other than by
     a regularly  scheduled  required  prepayment or  redemption),  purchased or
     defeased,  or an offer to prepay,  redeem,  purchase  or defease  such Debt
     shall be  required  to be made,  in each case prior to the stated  maturity
     thereof; or

          (f) any Loan Party or any of its Subsidiaries  shall generally not pay
     its debts as such debts become due, or shall admit in writing its inability
     to pay its debts  generally,  or shall  make a general  assignment  for the
     benefit of creditors;  or any proceeding  shall be instituted by or against
     any Loan  Party  or any of its  Subsidiaries  seeking  to  adjudicate  it a
     bankrupt or insolvent, or seeking liquidation,  winding up, reorganization,
     arrangement,  adjustment,  protection,  relief, or composition of it or its
     debts under any law relating to bankruptcy, insolvency or reorganization or
     relief of  debtors,  or  seeking  the  entry of an order for  relief or the
     appointment of a receiver, trustee, or other similar official for it or for
     any  substantial  part  of its  property  and,  in  the  case  of any  such
     proceeding  instituted  against it (but not instituted by it) that is being
     diligently  contested  by it in good faith,  either such  proceeding  shall
     remain  undismissed  or  unstayed  for a  period  of 30  days or any of the
     actions sought in such proceeding (including, without limitation, the entry
     of an order for relief against, or the appointment of a receiver,  trustee,
     custodian or other similar  official for, it or any substantial part of its
     property) shall occur; or any Loan Party or any of its Subsidiaries
<PAGE>

     shall take any  corporate  action to authorize any of the actions set forth
     above in this subsection (f); or

          (g) any  judgment  or order  for the  payment  of money in  excess  of
     $1,000,000  shall  be  rendered  against  any  Loan  Party  or  any  of its
     Subsidiaries  and  either  (i) enforcement   proceedings  shall  have  been
     commenced by any creditor  upon such  judgment or order or (ii) there shall
     be any period of 10 consecutive  days during which a stay of enforcement of
     such judgment or order,  by reason of a pending appeal or otherwise,  shall
     not be in effect; or

          (h) any  non-monetary  judgment or order shall be rendered against any
     Loan Party or any of its Subsidiaries  that is reasonably  likely to have a
     Material  Adverse  Effect,  and there shall be any period of 10 consecutive
     days during  which a stay of  enforcement  of such  judgment  or order,  by
     reason of a pending appeal or otherwise, shall not be in effect; or

          (i) any provision of any Loan Document after delivery thereof pursuant
     to  Section 3.01  or  5.01(o)  shall for any  reason  cease to be valid and
     binding on or  enforceable  against  any Loan Party to it, or any such Loan
     Party shall so state in writing; or

          (j) any Collateral Document after delivery thereof pursuant to Section
     3.01 or 5.01(o)  shall for any reason  (other  than  pursuant  to the terms
     thereof)  cease to create a valid and perfected  first priority lien on and
     security interest in the Collateral purported to be covered thereby; or

          (k) (i) any Person or two or more Persons acting in concert shall have
     acquired  beneficial  ownership  (within  the  meaning of Rule 13d-3 of the
     Securities and Exchange  Commission  under the  Securities  Exchange Act of
     1934), directly or indirectly,  of Voting Stock of PSC (or other securities
     convertible  into  such  Voting  Stock)  representing  30% or  more  of the
     combined voting power of all Voting Stock of PSC; (ii) during any period of
     up to 24 consecutive  months,  commencing  before or after the date of this
     Agreement,  individuals  who at the beginning of such 24-month  period were
     directors of PSC (together  with any other  director  whose election to the
     Board of  Directors of PSC (or whose  nomination  by the Board of Directors
     for election by the stockholders of PSC) was approved by a vote of at least
     a majority of the directors then in office who either were directors at the
     beginning  of such period or whose  election  was  previously  so approved)
     shall  cease  for any  reason  to  constitute  a  majority  of the board of
     directors  of PSC; or  (iii) any  Person or two or more  Persons  acting in
     concert shall have acquired by contract or otherwise, or shall have entered
     into a contract or arrangement that, upon consummation,  will result in its
     or their  acquisition of the power to exercise,  directly or indirectly,  a
     controlling influence over the management or policies of PSC; or

          (l) any ERISA Event shall have occurred with respect to a Plan and the
     sum  (determined  as of the date of  occurrence of such ERISA Event) of the
     Insufficiency of such Plan and the Insufficiency of any and all other Plans
     with respect to which an ERISA Event shall have occurred and then exist (or
     the liability of the Loan Parties and the ERISA Affiliates  related to such
     ERISA Event) exceeds $1,000,000; or
<PAGE>


          (m) any Loan Party or any ERISA  Affiliate shall have been notified by
     the  sponsor  of a  Multiemployer  Plan  that  it has  incurred  Withdrawal
     Liability to such  Multiemployer  Plan in an amount that,  when  aggregated
     with all other amounts  required to be paid to  Multiemployer  Plans by the
     Loan Parties and the ERISA Affiliates as Withdrawal  Liability  (determined
     as of the  date of  such  notification),  exceeds  $1,000,000  or  requires
     payments exceeding $250,000 per annum; or

          (n) any Loan Party or any ERISA  Affiliate shall have been notified by
     the  sponsor of a  Multiemployer  Plan that such  Multiemployer  Plan is in
     reorganization  or is being  terminated,  within the meaning of Title IV of
     ERISA, and as a result of such  reorganization or termination the aggregate
     annual  contributions  of the Loan Parties and the ERISA  Affiliates to all
     Multiemployer  Plans that are then in  reorganization  or being  terminated
     have  been  or will be  increased  over  the  amounts  contributed  to such
     Multiemployer  Plans  for  the  plan  years  of  such  Multiemployer  Plans
     immediately  preceding  the  plan  year in  which  such  reorganization  or
     termination occurs by an amount exceeding $1,000,000; or

          (o) there  shall  occur in the  reasonable  judgment  of the  Required
     Lenders any Material Adverse Change; or

          (p) any Borrowing Base Deficiency shall occur; or

          (q) on or before  December  30, 1996 (i) the  Borrower  shall not have
     good,  marketable and insurable fee simple title to the IRB Property,  free
     and clear of all Liens, other than the Permitted  Encumbrances (which shall
     not include any Liens arising under the IRB  Documents) as set forth in the
     Oregon  Deed of Trust  or (ii)  the  Administrative  Agent  shall  not have
     received  a  Mortgage  Policy  on the IRB  Property  that  complies  in all
     respects with the provisions of Section 3.01 (l)(xi)(B), provided that such
     Mortgage  Policy  shall  insure that the Lien created by the Oregon Deed of
     Trust is subject  only to Permitted  Encumbrances  (which shall not include
     any Liens arising under the IRB Documents);

then, and in any such event, the Administrative  Agent (i) shall at the request,
or may with the consent,  of the Required  Lenders,  by notice to the  Borrower,
declare the Commitments of each Appropriate Lender (other than the Commitment in
respect of Letter of Credit  Advances by the Issuing  Bank or a Working  Capital
Lender pursuant to Section 2.03(c)) and Swing Line Advances by a Working Capital
Lender  pursuant to Section  2.02(b) and of the Issuing Bank to issue Letters of
Credit to be terminated,  whereupon the same shall forthwith terminate, and (ii)
shall at the request, or may with the consent,  of the Required Lenders,  (A) by
notice to the Borrower,  declare the Notes,  all interest  thereon and all other
amounts  payable  under  this  Agreement  and the  other  Loan  Documents  to be
forthwith due and payable,  whereupon the Notes,  all such interest and all such
amounts  shall become and be forthwith  due and  payable,  without  presentment,
demand, protest or further notice of any kind, all of which are hereby expressly
waived by the Borrower and (B) by notice to each party  required under the terms
of any  agreement  in  support  of which a Standby  Letter of Credit is  issued,
request  that all  Obligations  under such  agreement  be declared to be due and
payable; provided, however, that in the event of an actual or deemed entry of an
order for relief with respect to any Loan Party or any of its Subsidiaries under

<PAGE>

the Federal  Bankruptcy Code, (x) the obligation of each Lender to make Advances
(other than Letter of Credit  Advances by the Issuing Bank or a Working  Capital
Lender  pursuant to Section 2.03(c) and Swing Line Advances by a Working Capital
Lender  pursuant to Section  2.02(b) and of the Issuing Bank to issue Letters of
Credit shall  automatically  be terminated and (y) the Notes,  all such interest
and all such amounts shall automatically become and be due and payable,  without
presentment,  demand, protest or any notice of any kind, all of which are hereby
expressly waived by the Borrower.

     SECTION 6.02. Actions in Respect of the Letters of Credit upon Default.  If
any Event of Default shall have occurred and be continuing,  the  Administrative
Agent may,  or shall at the request of the  Required  Lenders,  irrespective  of
whether it is taking any of the actions  described in Section 6.01 or otherwise,
make demand upon the  Borrower to, and  forthwith  upon such demand the Borrower
will,  pay to the  Administrative  Agent on behalf of the Lender Parties in same
day funds at the  Administrative  Agent's office designated in such demand,  for
deposit in the L/C Cash  Collateral  Account,  an amount equal to the  aggregate
Available Amount of all Letters of Credit then  outstanding.  If at any time the
Administrative  Agent  determines that any funds held in the L/C Cash Collateral
Account  are  subject  to any  right  or  claim  of any  Person  other  than the
Administrative  Agent and the Lender  Parties  or that the total  amount of such
funds is less than the aggregate  Available Amount of all Letters of Credit, the
Borrower will,  forthwith upon demand by the  Administrative  Agent,  pay to the
Administrative  Agent,  as additional  funds to be deposited and held in the L/C
Cash  Collateral  Account,  an amount equal to the excess of (a) such  aggregate
Available  Amount over (b) the  total amount of funds,  if any, then held in the
L/C Cash Collateral Account that the Administrative  Agent determines to be free
and clear of any such right and claim.


                                  ARTICLE VII

                           The Administrative Agent

     SECTION  7.01.   Authorization  and  Action.  Each  Lender  Party  (in  its
capacities as a Lender, the Swing Line Bank (if applicable) the Issuing Bank (if
applicable)  and a potential  Hedge Bank)  hereby  appoints and  authorizes  the
Administrative  Agent to take such action as agent on its behalf and to exercise
such powers and discretion  under this Agreement and the other Loan Documents as
are  delegated  to the  Administrative  Agent by the terms  hereof and  thereof,
together with such powers and discretion as are reasonably  incidental  thereto.
As to any matters not expressly  provided for by the Loan Documents  (including,
without limitation,  enforcement or collection of the Notes), the Administrative
Agent shall not be required to exercise any  discretion or take any action,  but
shall be required to act or to refrain from acting (and shall be fully protected
in so acting or refraining  from acting) upon the  instructions  of the Required
Lenders,  and such instructions shall be binding upon all Lender Parties and all
holders of Notes; provided,  however, that the Administrative Agent shall not be
required to take any action that  exposes the  Administrative  Agent to personal
liability  or  that is  contrary  to  this  Agreement  or  applicable  law.  The
Administrative  Agent agrees to give to each Lender Party prompt  notice of each
notice given to it by the Borrower pursuant to the terms of this Agreement.

<PAGE>

     SECTION  7.02.   Administrative   Agent's   Reliance,   Etc.   Neither  the
Administrative  Agent nor any of its  directors,  officers,  agents or employees
shall be liable for any action  taken or omitted to be taken by it or them under
or in  connection  with the Loan  Documents,  except  for its or their own gross
negligence or willful  misconduct.  Without  limitation of the generality of the
foregoing,  the Administrative Agent: (a) may treat the payee of any Note as the
holder thereof until the Administrative Agent receives and accepts an Assignment
and  Acceptance  entered  into by the Lender that is the payee of such Note,  as
assignor,  and an Eligible Assignee,  as assignee,  as provided in Section 8.07;
(b) may  consult  with legal  counsel  (including  counsel for any Loan  Party),
independent public accountants and other experts selected by it and shall not be
liable  for any  action  taken or  omitted  to be  taken in good  faith by it in
accordance with the advice of such counsel, accountants or experts; (c) makes no
warranty or  representation  to any Lender Party and shall not be responsible to
any Lender Party for any  statements,  warranties  or  representations  (whether
written or oral) made in or in connection with the Loan Documents; (d) shall not
have any duty to ascertain or to inquire as to the  performance or observance of
any of the terms,  covenants or  conditions  of any Loan Document on the part of
any Loan Party or to inspect the property  (including  the books and records) of
any Loan Party;  (e) shall  not be  responsible  to any Lender Party for the due
execution, legality, validity, enforceability, genuineness, sufficiency or value
of, or the  perfection or priority of any lien or security  interest  created or
purported to be created  under or in connection  with,  any Loan Document or any
other instrument or document furnished pursuant thereto;  and (f) shall incur no
liability  under or in respect of any Loan  Document  by acting upon any notice,
consent,  certificate or other  instrument or writing (which may be by telegram,
telecopy or telex) believed by it to be genuine and signed or sent by the proper
party or parties.

     SECTION 7.03. Fleet and Affiliates.  With respect to its  Commitments,  the
Advances made by it and the Notes issued to it, Fleet shall have the same rights
and powers  under the Loan  Documents as any other Lender Party and may exercise
the same as though it were not the  Administrative  Agent;  and the term "Lender
Party" or "Lenders Parties" shall, unless otherwise expressly indicated, include
Fleet in its individual  capacity.  Fleet and its affiliates may accept deposits
from,  lend money to, act as trustee  under  indentures  of,  accept  investment
banking  engagements from and generally engage in any kind of business with, any
Loan Party,  any of its  Subsidiaries and any Person who may do business with or
own  securities of any Loan Party or any such  Subsidiary,  all as if Fleet were
not the  Administrative  Agent and without  any duty to account  therefor to the
Lender Parties.

     SECTION 7.04. Lender Party Credit Decision.  Each Lender Party acknowledges
that it has, independently and without reliance upon the Administrative Agent or
any other  Lender  Party and based on the  financial  statements  referred to in
Section 4.01  and  such  other  documents  and  information  as  it  has  deemed
appropriate,  made its own  credit  analysis  and  decision  to enter  into this
Agreement.  Each Lender Party also acknowledges that it will,  independently and
without  reliance  upon the  Administrative  Agent or any other Lender Party and
based on such  documents and  information  as it shall deem  appropriate  at the
time,  continue to make its own credit  decisions in taking or not taking action
under this Agreement.

     SECTION 7.05.  Indemnification.  (a) Each Lender Party severally  agrees to
indemnify the Administrative Agent (to the extent not promptly reimbursed by the

<PAGE>

Borrower)  from and against such Lender  Party's  ratable share  (determined  as
provided  below)  of any  and all  liabilities,  obligations,  losses,  damages,
penalties,  actions,  judgments,  suits, costs, expenses or disbursements of any
kind or nature  whatsoever  that may be imposed  on,  incurred  by, or  asserted
against the  Administrative  Agent in any way  relating to or arising out of the
Loan Documents or any action taken or omitted by the Administrative  Agent under
the Loan Documents;  provided, however, that no Lender Party shall be liable for
any  portion  of such  liabilities,  obligations,  losses,  damages,  penalties,
actions,  judgments,  suits, costs, expenses or disbursements resulting from the
Administrative   Agent's  gross  negligence  or  willful   misconduct.   Without
limitation  of  the  foregoing,  each  Lender  Party  agrees  to  reimburse  the
Administrative Agent promptly upon demand for its ratable share of any costs and
expenses (including,  without limitation,  fees and expenses of counsel) payable
by the Borrower under Section 8.04, to the extent that the Administrative  Agent
is not  promptly  reimbursed  for such costs and expenses by the  Borrower.  For
purposes of this Section 7.05(a),  the Lender Parties' respective ratable shares
of any amount shall be determined,  at any time, according to the sum of (a) the
aggregate principal amount of the Advances outstanding at such time and owing to
the  respective  Lender  Parties,  (b) their  respective  Pro Rata Shares of the
aggregate  Available  Amount of all Letters of Credit  outstanding at such time,
(c) the  aggregate  unused portions of their respective  Term A  Commitments and
Term B Commitments at such time and (d) their  respective Unused Working Capital
Commitments at such time;  provided that the aggregate principal amount of Swing
Line  Advances  owing to the Swing  Line  Bank and of Letter of Credit  Advances
owing to the Issuing Bank shall be considered to be owed to the Working  Capital
Lenders ratably in accordance with their respective Working Capital Commitments.
In the event that any Defaulted  Advance shall be owing by any Defaulting Lender
at any time,  such Lender Party's  Commitment with respect to the Facility under
which such Defaulted  Advance was required to have been made shall be considered
to be unused for purposes of this Section 7.05(a) to the extent of the amount of
such  Defaulted  Advance.  The  failure of any  Lender  Party to  reimburse  the
Administrative  Agent  promptly  upon demand for its ratable share of any amount
required to be paid by the Lender Party to the Administrative  Agent as provided
herein shall not relieve any other Lender Party of its  obligation  hereunder to
reimburse the Administrative  Agent for its ratable share of such amount, but no
Lender Party shall be  responsible  for the failure of any other Lender Party to
reimburse the  Administrative  Agent for such other Lender Party's ratable share
of such amount.  Without prejudice to the survival of any other agreement of any
Lender Party  hereunder,  the  agreement  and  obligations  of each Lender Party
contained  in  this  Section 7.05(a)  shall  survive  the  payment  in  full  of
principal,  interest and all other amounts payable hereunder and under the other
Loan Documents.

     (b) Each Lender Party  severally  agrees to indemnify  the Issuing Bank (to
the extent not promptly reimbursed by the Borrower) from and against such Lender
Party's ratable share (determined as provided below) of any and all liabilities,
obligations,  losses,  damages,  penalties,  actions,  judgments,  suits, costs,
expenses or disbursements  of any kind or nature  whatsoever that may be imposed
on, incurred by, or asserted  against the Issuing Bank in any way relating to or
arising out of the Loan  Documents or any action taken or omitted by the Issuing
Bank under the Loan Documents;  provided, however, that no Lender Party shall be
liable  for any  portion  of such  liabilities,  obligations,  losses,  damages,
penalties, actions, judgments, suits, costs, expenses or disbursements resulting
from  the  Issuing  Bank's  gross  negligence  or  willful  misconduct.  Without
limitation of the  foregoing,  each Lender Party agrees to reimburse the Issuing
Bank  promptly  upon  demand  for its  ratable  share of any costs and  expenses

<PAGE>

(including,  without  limitation,  fees and expenses of counsel)  payable by the
Borrower under Section 8.04, to the extent that the Issuing Bank is not promptly
reimbursed  for such costs and  expenses by the  Borrower.  For purposes of this
Section  7.05(b),  the Lender Parties'  respective  ratable shares of any amount
shall be  determined,  at any time,  according  to the sum of (a) the  aggregate
principal  amount  of the  Advances  outstanding  at such  time and owing to the
respective Lender Parties, (b) their respective Pro Rata Shares of the aggregate
Available  Amount of all  Letters of Credit  outstanding  at such time,  (c) the
aggregate  unused  portions of their  respective  Term A Commitments  and Term B
Commitments  at such time  plus  (d) their  respective  Unused  Working  Capital
Commitments at such time;  provided that the aggregate principal amount of Swing
Line  Advances  owing to the Swing  Line  Bank and of Letter of Credit  Advances
owing to the Issuing Bank shall be considered to be owed to the Working  Capital
Lenders ratably in accordance with their respective Working Capital Commitments.
In the event that any Defaulted  Advance shall be owing by any Defaulting Lender
at any time,  such Lender Party's  Commitment with respect to the Facility under
which such Defaulted  Advance was required to have been made shall be considered
to be unused for purposes of this Section 7.05(b) to the extent of the amount of
such Defaulted Advance. The failure of any Lender Party to reimburse the Issuing
Bank  promptly  upon demand for its ratable  share of any amount  required to be
paid by the Lender  Parties to the  Issuing  Bank as provided  herein  shall not
relieve any other Lender  Party of its  obligation  hereunder  to reimburse  the
Issuing Bank for its ratable share of such amount,  but no Lender Party shall be
responsible  for the failure of any other Lender Party to reimburse  the Issuing
Bank for such  other  Lender  Party's  ratable  share  of such  amount.  Without
prejudice to the survival of any other agreement of any Lender Party  hereunder,
the  agreement  and   obligations  of  each  Lender  Party   contained  in  this
Section 7.05(b) shall survive the payment in full of principal, interest and all
other amounts payable hereunder and under the other Loan Documents.

     SECTION 7.06. Successor Administrative Agents. The Administrative Agent may
resign as to any or all of the  Facilities at any time by giving  written notice
thereof to the Lender  Parties and the  Borrower and may be removed as to all of
the Facilities at any time with or without cause by the Required  Lenders.  Upon
any such  resignation or removal,  the Required  Lenders shall have the right to
appoint a  successor  Administrative  Agent as to such of the  Facilities  as to
which the  Administrative  Agent has resigned or been  removed.  If no successor
Administrative  Agent shall have been so appointed by the Required Lenders,  and
shall  have  accepted  such  appointment,  within  30 days  after  the  retiring
Administrative  Agent's giving of notice of resignation or the Required Lenders'
removal of the retiring  Administrative Agent, then the retiring  Administrative
Agent may, on behalf of the Lender Parties,  appoint a successor  Administrative
Agent,  which shall be a commercial  bank organized under the laws of the United
States or of any State  thereof and having a combined  capital and surplus of at
least  $250,000,000.  Upon the acceptance of any  appointment as  Administrative
Agent hereunder by a successor  Administrative Agent as to all of the Facilities
and upon the execution and filing or recording of such financing statements,  or
amendments  thereto,  and such  amendments or supplements to the Mortgages,  and
such other instruments or notices,  as may be necessary or desirable,  or as the
Required  Lenders may request,  in order to continue the perfection of the Liens
granted or purported to be granted by the Collateral  Documents,  such successor
Administrative  Agent  shall  succeed to and become  vested with all the rights,
powers, discretion,  privileges and duties of the retiring Administrative Agent,
and the retiring  Administrative  Agent shall be discharged  from its duties and
obligations under the Loan Documents.  Upon the acceptance of any appointment as
Administrative  Agent hereunder by a successor  Administrative  Agent as to less

<PAGE>

than all of the  Facilities  and upon the  execution  and filing or recording of
such  financing  statements,  or  amendments  thereto,  and such  amendments  or
supplements to the Mortgages,  and such other instruments or notices,  as may be
necessary  or  desirable,  or as the Required  Lenders may request,  in order to
continue the  perfection  of the Liens granted or purported to be granted by the
Collateral Documents,  such successor  Administrative Agent shall succeed to and
become vested with all the rights, powers, discretion,  privileges and duties of
the retiring Administrative Agent as to such Facilities, other than with respect
to funds transfers and other similar aspects of the administration of Borrowings
under such  Facilities,  issuances  of Letters  of Credit  (notwithstanding  any
resignation  as  Administrative  Agent  with  respect  to the  Letter  of Credit
Facility)  and payments by the Borrower in respect of such  Facilities,  and the
retiring   Administrative   Agent  shall  be  discharged  from  its  duties  and
obligations under this Agreement as to such Facilities, other than as aforesaid.
After any retiring  Administrative  Agent's  resignation or removal hereunder as
Administrative  Agent  as to all of  the  Facilities,  the  provisions  of  this
Article VII  shall inure to its benefit as to any actions taken or omitted to be
taken by it while it was  Administrative  Agent as to any Facilities  under this
Agreement.


                                 ARTICLE VIII

                                 MISCELLANEOUS

     SECTION 8.01.  Amendments,  Etc. No amendment or waiver of any provision of
this  Agreement  or the Notes or any other  Loan  Document,  nor  consent to any
departure by the Borrower therefrom,  shall in any event be effective unless the
same  shall  be in  writing  and  signed  (or,  in the  case  of the  Collateral
Documents,  consented  to) by the  Required  Lenders,  and then  such  waiver or
consent  shall be effective  only in the specific  instance and for the specific
purpose for which given;  provided,  however,  that (a) no amendment,  waiver or
consent  shall,  unless in writing and signed by all of the Lenders  (other than
any Lender  Party that is, at such time,  a  Defaulting  Lender),  do any of the
following at any time: (i) waive any of the conditions specified in Section 3.01
or, in the case of the Initial  Extension of Credit,  Section 3.02,  (ii) change
the  number  of  Lenders  or the  percentage  of (x)  the  Commitments,  (y) the
aggregate unpaid principal amount of the Advances or (z) the aggregate Available
Amount of  outstanding  Letters of Credit that, in each case,  shall be required
for the  Lenders or any of them to take any action  hereunder,  (iii) reduce  or
limit the  obligations  of the  Guarantor  under  Section 1 of the  Guaranty  or
otherwise limit the Guarantor's  liability with respect to the Obligations owing
to the  Administrative  Agent and the Lender Parties,  (iv) release any material
portion of the Collateral in any  transaction or series of related  transactions
or permit the creation,  incurrence,  assumption or existence of any Lien on any
material  portion  of the  Collateral  in any  transaction  or series of related
transactions  to secure  any  Obligations  other than  Obligations  owing to the
Secured  Parties under the Loan Documents and other than Debt owing to any other
Person,  provided  that, in the case of any Lien on any material  portion of the
Collateral to secure Debt owing to any other Person,  (A) the Borrower shall, on
the date such Debt shall be incurred or issued, prepay the Advances pursuant to,
and in the order of priority set forth in,  Section 2.06(b)(ii)  in an aggregate
principal  amount  equal to the amount of such Net Cash  Proceeds  to the extent
required to do so under Section 2.06(b)(ii), (B) such Lien shall be subordinated
to the  Liens  created  under  the Loan  Documents  on terms  acceptable  to the
Required  Lenders  and (C) the  Required  Lenders  shall  otherwise  permit  the
creation,  incurrence,  assumption  or existence of such Lien and, to the extent

<PAGE>

not otherwise  permitted  under  Section 5.02(b),  of such Debt,  (v) amend this
Section 8.01,  or  (vi) limit  the  liability of any Loan Party under any of the
Loan Documents and (b) no amendment,  waiver or consent shall, unless in writing
and signed by the Required  Lenders and each Lender that has a Commitment  under
the Term A Facility,  Term B Facility or Working Capital Facility if affected by
such amendment,  waiver or consent,  (i) increase the Commitments of such Lender
or subject such Lender to any additional obligations,  (ii) reduce the principal
of, or interest  on, the Notes held by such Lender or any fees or other  amounts
payable hereunder to such Lender,  (iii) postpone any date fixed for any payment
of  principal  of, or interest  on, the Notes held by such Lender or any fees or
other  amounts  payable  hereunder  to such  Lender or (iv)  change the order of
application  of any  prepayment  set forth in Section  2.06 in any  manner  that
materially  affects such Lender;  provided further that no amendment,  waiver or
consent  shall,  unless in  writing  and  signed  by the Swing  Line Bank or the
Issuing Bank, as the case may be, in addition to the Lenders  required  above to
take such action, affect the rights or obligations of the Swing Line Bank or the
Issuing Bank,  as the case may be, under this  Agreement;  and provided  further
that no amendment,  waiver or consent shall, unless in writing and signed by the
Administrative  Agent in  addition to the  Lenders  required  above to take such
action,  affect  the  rights or duties of the  Administrative  Agent  under this
Agreement.

     SECTION 8.02. Notices,  Etc. All notices and other communications  provided
for  hereunder  shall be in writing  (including  telegraphic,  telecopy or telex
communication) and mailed, telegraphed,  telecopied, telexed or delivered, if to
the  Borrower,  at its  address at 675 Basket  Road,  Webster,  New York  14580,
Attention:  William J.  Woodard;  if to PSC, at its address at 675 Basket  Road,
Webster, New York 14580, Attention: William J. Woodard; if to any Initial Lender
or the Initial Issuing Bank, at its Domestic Lending Office  specified  opposite
its name on Schedule I  hereto;  if to any other Lender  Party,  at its Domestic
Lending Office  specified in the Assignment and Acceptance  pursuant to which it
became a Lender Party; and if to the Administrative Agent, at its address at One
East Avenue,  Rochester, New York 14638, Attention:  Jeffrey Kenefick; or, as to
the  Borrower or the  Administrative  Agent,  at such other  address as shall be
designated  by such party in a written  notice to the other  parties  and, as to
each other party,  at such other address as shall be designated by such party in
a written notice to the Borrower and the Administrative  Agent. All such notices
and  communications  shall,  when  mailed  by  certified  mail,  return  receipt
requested;  telegraphed,  telecopied  or  telexed,  be  effective  3 days  after
mailing, upon delivery to the telegraph company, upon transmission by telecopier
or upon confirmation by telex answerback,  respectively, except that notices and
communications to the  Administrative  Agent pursuant to Article II,  III or VII
shall not be effective until received by the Administrative  Agent.  Delivery by
telecopier  of an  executed  counterpart  of  any  amendment  or  waiver  of any
provision of this Agreement or the Notes or of any Exhibit hereto to be executed
and delivered  hereunder  shall be effective as delivery of a manually  executed
counterpart thereof.

     SECTION  8.03.  No Waiver;  Remedies.  No failure on the part of any Lender
Party or the Administrative Agent to exercise,  and no delay in exercising,  any
right hereunder or under any Note shall operate as a waiver  thereof;  nor shall
any single or partial  exercise of any such right  preclude any other or further
exercise  thereof  or the  exercise  of any other  right.  The  remedies  herein
provided are cumulative and not exclusive of any remedies provided by law.

<PAGE>

     SECTION 8.04. Costs and Expenses.  (a) The Borrower agrees to pay on demand
(i) all costs and expenses of the  Administrative  Agent and the Co-Arrangers in
connection   with  the   preparation,   execution,   delivery,   administration,
modification and amendment of the Loan Documents (including, without limitation,
(A)all due diligence,  collateral  review,  syndication,  (including  printing,
distribution   and  bank  meetings)   transportation,   computer,   duplication,
appraisal, audit, insurance,  consultant,  search, filing and recording fees and
expenses,  and  (B)  the  reasonable  fees  and  expenses  of  counsel  for  the
Administrative Agent and the Co-Arrangers with respect thereto,  with respect to
advising the Administrative Agent as to its rights and responsibilities,  or the
perfection,  protection or preservation  of rights or interests,  under the Loan
Documents,  with  respect  to  negotiations  with any Loan  Party or with  other
creditors  of any  Loan  Party  or any of its  Subsidiaries  arising  out of any
Default or any events or circumstances  that may give rise to a Default and with
respect to presenting claims in or otherwise  participating in or monitoring any
bankruptcy,  insolvency or other similar proceeding  involving creditors' rights
generally and any proceeding  ancillary thereto) and (ii) all costs and expenses
of the  Administrative  Agent and the  Lender  Parties  in  connection  with the
enforcement of the Loan  Documents,  whether in any action,  suit or litigation,
any  bankruptcy,  insolvency or other similar  proceeding  affecting  creditors'
rights  generally  (including,  without  limitation,  the  reasonable  fees  and
expenses of counsel  for the  Administrative  Agent and each  Lender  Party with
respect thereto).

     (b) The Borrower  agrees to indemnify and hold harmless the  Administrative
Agent,  the  Co-Arrangers,  each Lender Party and each of their  Affiliates  and
their officers, directors, employees, agents and advisors (each, an "Indemnified
Party") from and against any and all claims,  damages,  losses,  liabilities and
expenses  (including,  without  limitation,  reasonable  fees  and  expenses  of
counsel) that may be incurred by or asserted or awarded  against any Indemnified
Party,  in each case arising out of or in connection with or by reason of, or in
connection with the preparation for a defense of, any investigation,  litigation
or  proceeding  arising  out  of,  related  to or in  connection  with  (i)  the
Facilities,  the actual or proposed  use of the  proceeds of the Advances or the
Letters of Credit by the Borrower or any of its subsidiaries or other affiliates
and any of the other  transaction  contemplated by the Loan Documents,  (ii) any
acquisition or proposed  acquisition or similar business combination or proposed
business  combination  by PSC or the  Borrower or any of their  subsidiaries  or
affiliates of all or any portion of the shares of capital stock or substantially
all of the property and assets of any other person, (iii) the Facilities and any
use made or proposed to be made with the proceeds  thereof or (iv) the actual or
alleged presence of Hazardous Materials on any property of any Loan Party or any
of its Subsidiaries or any Environmental  Action relating in any way to any Loan
Party  or  any  of  its   Subsidiaries,   in  each  case  whether  or  not  such
investigation,  litigation  or  proceeding  is  brought by any Loan  Party,  its
directors,  shareholders or creditors or an Indemnified Party or any Indemnified
Party  is  otherwise  a  party  thereto  and  whether  or not  the  transactions
contemplated  hereby are consummated,  except to the extent such claim,  damage,
loss,  liability  or expense is found in a final,  non-appealable  judgment by a
court of competent  jurisdiction to have resulted from such Indemnified  Party's
gross negligence or willful  misconduct.  The Borrower also agrees not to assert
any claim  against the  Administrative  Agent,  any Lender Party or any of their
Affiliates, or any of their respective officers, directors, employees, attorneys
and agents, on any theory of liability, for special, indirect,  consequential or
punitive  damages arising out of or otherwise  relating to the  Facilities,  the
actual or proposed use of the proceeds of the Advances or the Letters of Credit,
the Loan Documents or any of the transactions contemplated thereby.

<PAGE>

     (c) If any payment of principal of, or Conversion of, any  Eurodollar  Rate
Advance is made by the  Borrower to or for the  account of a Lender  Party other
than on the last day of the Interest  Period for such Advance,  as a result of a
payment or Conversion pursuant to Section 2.09(b)(i) or 2.10(d), acceleration of
the maturity of the Notes pursuant to Section 6.01  or for any other reason,  or
by an  Eligible  Assignee  to a Lender  Party  other than on the last day of the
Interest  Period for such Advance upon an assignment  of rights and  obligations
under this  Agreement  pursuant  to Section  8.07 as a result of a demand by the
Borrower  pursuant to  Section 8.07(a),  the Borrower shall, upon demand by such
Lender Party (with a copy of such demand to the  Administrative  Agent),  pay to
the  Administrative  Agent for the  account  of such  Lender  Party any  amounts
required to compensate  such Lender Party for any  additional  losses,  costs or
expenses that it may  reasonably  incur as a result of such payment,  including,
without limitation,  any loss (including loss of anticipated  profits),  cost or
expense  incurred by reason of the  liquidation or  reemployment  of deposits or
other funds acquired by any Lender Party to fund or maintain such Advance.

     (d) If any Loan Party  fails to pay when due any costs,  expenses  or other
amounts payable by it under any Loan Document,  including,  without  limitation,
fees and expenses of counsel and indemnities,  such amount may be paid on behalf
of such Loan Party by the Administrative  Agent or any Lender Party, in its sole
discretion.

     (e) Without  prejudice to the  survival of any other  agreement of any Loan
Party hereunder or under any other Loan Document, the agreements and obligations
of the Borrower  contained in Sections 2.10 and 2.12 and this Section 8.04 shall
survive the payment in full of principal, interest and all other amounts payable
hereunder and under any of the other Loan Documents.
<PAGE>

     SECTION  8.05.  Right of Set-off.  Upon (a) the  occurrence  and during the
continuance  of any Event of Default  and (b) the  making of the  request or the
granting  of  the  consent   specified  by  Section   6.01  to   authorize   the
Administrative  Agent to  declare  the Notes  due and  payable  pursuant  to the
provisions  of  Section  6.01,  each  Lender  Party  and each of its  respective
Affiliates  is  hereby  authorized  at any time and  from  time to time,  to the
fullest  extent  permitted  by law, to set off and  otherwise  apply any and all
deposits (general or special, time or demand,  provisional or final) at any time
held and  other  indebtedness  at any time  owing by such  Lender  Party or such
Affiliate  to or for the credit or the account of the  Borrower  against any and
all of the  Obligations  of the Borrower now or  hereafter  existing  under this
Agreement and the Note or Notes (if any) held by such Lender Party, irrespective
of whether such Lender Party shall have made any demand under this  Agreement or
such Note or Notes and although such  obligations may be unmatured.  Each Lender
Party  agrees  promptly  to  notify  the  Borrower  after any such  set-off  and
application;  provided,  however, that the failure to give such notice shall not
affect the validity of such set-off and  application.  The rights of each Lender
Party and its respective  Affiliates under this Section are in addition to other
rights and remedies  (including,  without  limitation,  other rights of set-off)
that such Lender Party and its respective Affiliates may have.

     SECTION 8.06. Binding Effect. This Agreement shall become effective when it
shall have been executed by the Borrower and the  Administrative  Agent and when
the Administrative Agent shall have been notified by each Initial Lender and the
Initial  Issuing Bank that such Initial Lender and the Initial  Issuing Bank has
executed it and thereafter shall be binding upon and inure to the benefit of the
Borrower,  the  Administrative  Agent and each Lender Party and their respective
successors  and assigns,  except that the  Borrower  shall not have the right to
assign its rights  hereunder or any interest  herein  without the prior  written
consent of the Lender Parties.

     SECTION 8.07. Assignments and Participations. (a) Each Lender may assign to
one or more Eligible  Assignees  all or a portion of its rights and  obligations
under this Agreement  (including,  without  limitation,  all or a portion of its
Commitment or  Commitments,  the Advances owing to it and the Note or Notes held
by it); provided,  however, that (i) each such assignment shall be of a uniform,
and not a varying, percentage of all rights and obligations under and in respect
of one or more Facilities,  (ii) except in the case of an assignment to a Person
that, immediately prior to such assignment, was a Lender or an assignment of all
of a Lender's  rights and obligations  under this  Agreement,  the amount of the
Commitment  of the  assigning  Lender  being  assigned  pursuant  to  each  such
assignment  (determined as of the date of the  Assignment  and  Acceptance  with
respect to such  assignment)  shall in no event be less than  $5,000,000,  (iii)
each such assignment shall be to an Eligible Assignee,  (iv) no such assignments
shall be  permitted  without the consent of the  Administrative  Agent until the
Administrative  Agent shall have notified the Lender Parties that syndication of
the Commitments  hereunder has been completed,  (V) no such assignment  shall be
permitted if,  immediately  after giving effect  thereto,  the Borrower would be
required to make payments to or on behalf of the assignee  Lender Party pursuant
to Section  2.10(a) or (b) and the assignor  Lender Party was not at the time of
such assignment,  entitled to receive any payment pursuant to Section 2.10(a) or
(b), and (vi) the parties to each such  assignment  shall execute and deliver to
the Administrative  Agent, for its acceptance and recording in the Register,  an
Assignment  and  Acceptance,  together  with any Note or Notes  subject  to such
assignment and a processing and recordation fee of $3,000.

     (b) Upon such execution, delivery, acceptance and recording, from and after
the effective date specified in such Assignment and Acceptance, (x) the assignee
thereunder  shall  be a  party  hereto  and,  to  the  extent  that  rights  and
obligations  hereunder have been assigned to it pursuant to such  Assignment and
Acceptance,  have the rights and obligations of a Lender or Issuing Bank, as the
case may be,  hereunder and (y) the  Lender or Issuing Bank assignor  thereunder
shall, to the extent that rights and obligations hereunder have been assigned by
it pursuant to such  Assignment  and  Acceptance,  relinquish  its rights and be
released  from its  obligations  under this  Agreement  (and,  in the case of an
Assignment and Acceptance  covering all or the remaining portion of an assigning
Lender's or Issuing Bank's rights and  obligations  under this  Agreement,  such
Lender or Issuing Bank shall cease to be a party hereto).

     (c) By executing and  delivering an Assignment and  Acceptance,  the Lender
Party assignor  thereunder and the assignee thereunder confirm to and agree with
each other and the other parties  hereto as follows:  (i) other than as provided
in such  Assignment  and  Acceptance,  such  assigning  Lender  Party  makes  no
representation  or warranty  and assumes no  responsibility  with respect to any
statements,  warranties or  representations  made in or in connection  with this
Agreement  or any other Loan  Document  or the  execution,  legality,  validity,
enforceability,  genuineness,  sufficiency  or value  of, or the  perfection  or
priority of any lien or security  interest  created or  purported  to be created

<PAGE>

under or in connection  with,  this  Agreement or any other Loan Document or any
other  instrument or document  furnished  pursuant hereto or thereto;  (ii) such
assigning  Lender  Party  makes no  representation  or  warranty  and assumes no
responsibility  with respect to the  financial  condition of the Borrower or any
other Loan Party or the  performance  or  observance by any Loan Party of any of
its  obligations  under any Loan  Document or any other  instrument  or document
furnished pursuant thereto;  (iii) such assignee confirms that it has received a
copy of  this  Agreement,  together  with  copies  of the  financial  statements
referred to in  Section 4.01  and such other documents and information as it has
deemed  appropriate  to make its own credit  analysis and decision to enter into
such  Assignment and  Acceptance;  (iv) such  assignee will,  independently  and
without reliance upon the  Administrative  Agent, such assigning Lender Party or
any other Lender Party and based on such  documents and  information as it shall
deem  appropriate  at the time,  continue  to make its own credit  decisions  in
taking or not taking action under this  Agreement;  (v) such  assignee  confirms
that it is an Eligible Assignee;  (vi) such assignee appoints and authorizes the
Administrative  Agent to take such action as agent on its behalf and to exercise
such powers and  discretion  under the Loan  Documents  as are  delegated to the
Administrative  Agent  by the  terms  hereof,  together  with  such  powers  and
discretion as are reasonably  incidental thereto; and (vii) such assignee agrees
that it will perform in accordance with their terms all of the obligations which
by the terms of this Agreement are required to be performed by it as a Lender or
Issuing Bank, as the case may be.

     (d) The  Administrative  Agent shall maintain at its address referred to in
Section 8.02 a copy of each Assignment and Acceptance  delivered to and accepted
by it and a  register  for the  recordation  of the names and  addresses  of the
Lender Parties and the Commitment  under each Facility of, and principal  amount
of the  Advances  owing under each  Facility  to, each Lender Party from time to
time (the  "Register").  The entries in the  Register  shall be  conclusive  and
binding  for  all  purposes,  absent  manifest  error,  and  the  Borrower,  the
Administrative  Agent and the Lender Parties may treat each Person whose name is
recorded in the  Register as a Lender Party  hereunder  for all purposes of this
Agreement. The Register shall be available for inspection by the Borrower or any
Lender Party at any reasonable time and from time to time upon reasonable  prior
notice.

     (e) Upon  its  receipt  of an  Assignment  and  Acceptance  executed  by an
assigning Lender Party and an assignee,  together with any Note or Notes subject
to such  assignment,  the  Administrative  Agent shall,  if such  Assignment and
Acceptance  has been  completed  and is in  substantially  the form of Exhibit C
hereto,  (i) accept such Assignment and Acceptance,  (ii) record the information
contained  therein in the Register and (iii) give prompt  notice  thereof to the
Borrower.  In the case of any assignment by a Lender,  within five Business Days
after its  receipt of such  notice,  the  Borrower,  at its own  expense,  shall
execute and deliver to the Administrative  Agent in exchange for the surrendered
Note or Notes a new Note to the  order of such  Eligible  Assignee  in an amount
equal  to the  Commitment  assumed  by it  under  a  Facility  pursuant  to such
Assignment and Acceptance and, if the assigning Lender has retained a Commitment
hereunder under such Facility,  a new Note to the order of the assigning  Lender
in an amount equal to the Commitment retained by it hereunder.  Such new Note or
Notes shall be in an aggregate principal amount equal to the aggregate principal
amount of such surrendered  Note or Notes,  shall be dated the effective date of
such Assignment and Acceptance and shall otherwise be in substantially  the form
of Exhibit A-1, A-2 or A-3 hereto, as the case may be.

<PAGE>

          (f) The  Issuing  Bank may assign to an Eligible  Assignee  all of its
     rights and  obligations  under the undrawn  portion of its Letter of Credit
     Commitment at any time;  provided,  however,  that (i) each such assignment
     shall  be to an  Eligible  Assignee  and  (ii)  the  parties  to each  such
     assignment shall execute and deliver to the  Administrative  Agent, for its
     acceptance  and recording in the Register,  an Assignment  and  Acceptance,
     together with a processing and recordation fee of $3,000.

          (g) Each Lender Party may sell  participations  to one or more Persons
     (other  than any Loan  Party  or any of its  Affiliates)  in or to all or a
     portion of its  rights and  obligations  under this  Agreement  (including,
     without limitation, all or a portion of its Commitments, the Advances owing
     to it and the Note or Notes (if any) held by it); provided,  however,  that
     (i) such  Lender  Party's  obligations  under  this  Agreement  (including,
     without  limitation,  its Commitments)  shall remain  unchanged,  (ii) such
     Lender Party shall remain solely  responsible  to the other parties  hereto
     for the  performance  of such  obligations,  (iii) such  Lender Party shall
     remain the holder of any such Note for all purposes of this Agreement, (iv)
     the Borrower,  the Administrative  Agent and the other Lender Parties shall
     continue to deal solely and directly  with such Lender Party in  connection
     with such Lender  Party's rights and  obligations  under this Agreement and
     (v) no  participant  under any such  participation  shall have any right to
     approve any amendment or waiver of any provision of any Loan  Document,  or
     any consent to any  departure  by any Loan Party  therefrom,  except to the
     extent that such  amendment,  waiver or consent  would reduce the principal
     of,  or  interest  on,  the  Notes  or any fees or  other  amounts  payable
     hereunder,  in  each  case to the  extent  subject  to such  participation,
     postpone  any date fixed for any payment of  principal  of, or interest on,
     the Notes or any fees or other amounts payable  hereunder,  in each case to
     the extent subject to such  participation,  or release all or substantially
     all of the Collateral.

          (h) Any  Lender  Party  may,  in  connection  with any  assignment  or
     participation  or proposed  assignment  or  participation  pursuant to this
     Section 8.07,  disclose to the assignee or participant or proposed assignee
     or participant,  any information relating to the Borrower furnished to such
     Lender  Party by or on behalf of the  Borrower;  provided,  however,  that,
     prior to any such  disclosure,  the  assignee  or  participant  or proposed
     assignee or participant shall agree to preserve the  confidentiality of any
     Confidential Information received by it from such Lender Party.

          (i)  Notwithstanding  any other provision set forth in this Agreement,
     any Lender  Party may at any time create a security  interest in all or any
     portion of its rights under this Agreement (including,  without limitation,
     the Advances  owing to it and the Note or Notes held by it) in favor of any
     Federal  Reserve  Bank in  accordance  with  Regulation A  of the  Board of
     Governors of the Federal Reserve System.

     SECTION 8.08. Execution in Counterparts.  This Agreement may be executed in
any  number  of  counterparts  and  by  different  parties  hereto  in  separate
counterparts,  each of which when so executed  shall be deemed to be an original
and all of which taken  together shall  constitute  one and the same  agreement.
Delivery of an executed  counterpart  of a signature  page to this  Agreement by
telecopier shall be effective as delivery of a manually executed  counterpart of
this Agreement.
<PAGE>

     SECTION 8.09. No Liability of the Issuing  Bank.  The Borrower  assumes all
risks of the acts or omissions of any beneficiary or transferee of any Letter of
Credit  with  respect to its use of such  Letter of Credit.  Neither the Issuing
Bank nor any of its officers or directors  shall be liable or  responsible  for:
(a) the use that may be made of any Letter of Credit or any acts or omissions of
any  beneficiary  or  transferee  in  connection  therewith;  (b) the  validity,
sufficiency or genuineness of documents,  or of any endorsement thereon, even if
such documents should prove to be in any or all respects invalid,  insufficient,
fraudulent or forged;  (c) payment by the Issuing Bank against  presentation  of
documents  that do not comply  with the terms of a Letter of  Credit,  including
failure of any  documents  to bear any  reference  or adequate  reference to the
Letter of Credit; or (d) any other circumstances whatsoever in making or failing
to make payment under any Letter of Credit,  except that the Borrower shall have
a claim  against the Issuing  Bank,  and the Issuing Bank shall be liable to the
Borrower,  to the extent of any direct, but not consequential,  damages suffered
by the Borrower that the Borrower  proves were caused by (i) the Issuing  Bank's
willful  misconduct  or  gross  negligence  in  determining   whether  documents
presented  under any  Letter of Credit  comply  with the terms of the  Letter of
Credit or (ii) the Issuing Bank's willful failure to make lawful payment under a
Letter  of  Credit  after the  presentation  to it of a draft  and  certificates
strictly  complying  with the terms and  conditions of the Letter of Credit.  In
furtherance and not in limitation of the foregoing,  the Issuing Bank may accept
documents that appear on their face to be in order,  without  responsibility for
further investigation, regardless of any notice or information to the contrary.

     SECTION 8.10.  Confidentiality.  Neither the  Administrative  Agent nor any
Lender Party shall disclose any  Confidential  Information to any Person without
the consent of the  Borrower,  other than (a) to the  Administrative  Agent's or
such Lender Party's Affiliates and their officers, directors,  employees, agents
and advisors and to actual or prospective  Eligible  Assignees and participants,
and then only on a  confidential  basis,  (b) as  required  by any law,  rule or
regulation  or judicial  process and (c) as  requested or required by any state,
federal or foreign authority or examiner regulating banks or banking.

     SECTION  8.11.  Jurisdiction,  Etc. (a)  Each of the parties  hereto hereby
irrevocably and  unconditionally  submits,  for itself and its property,  to the
nonexclusive  jurisdiction  of any New York State court or federal  court of the
United States of America  sitting in New York City, and any appellate court from
any  thereof,  in any action or  proceeding  arising  out of or relating to this
Agreement  or any of the other  Loan  Documents  to which it is a party,  or for
recognition  or  enforcement  of any  judgment,  and each of the parties  hereto
hereby irrevocably and unconditionally  agrees that all claims in respect of any
such action or proceeding may be heard and determined in any such New York State
court or, to the extent  permitted  by law, in such federal  court.  Each of the
parties  hereto  agrees that a final  judgment in any such action or  proceeding
shall be conclusive  and may be enforced in other  jurisdictions  by suit on the
judgment or in any other manner provided by law. Nothing in this Agreement shall
affect  any  right  that any  party may  otherwise  have to bring any  action or
proceeding  relating to this Agreement or any of the other Loan Documents in the
courts of any jurisdiction.

     (b) Each of the parties hereto irrevocably and  unconditionally  waives, to
the fullest  extent it may legally and  effectively do so, any objection that it
may now or  hereafter  have to the  laying  of  venue  of any  suit,  action  or
proceeding arising out of or relating to this Agreement or any of the other Loan

<PAGE>

Documents to which it is a party in any New York State or federal court. Each of
the parties hereto hereby irrevocably waives, to the fullest extent permitted by
law, the defense of an  inconvenient  forum to the maintenance of such action or
proceeding in any such court.

     SECTION 8.12. Governing Law. This Agreement and the Notes shall be governed
by, and construed in accordance with, the laws of the State of New York.

     SECTION  8.13.   Waiver  of  Jury  Trial.   Each  of  the   Borrower,   the
Administrative  Agent and the  Lender  Parties  irrevocably  waives all right to
trial  by jury in any  action,  proceeding  or  counterclaim  (whether  based on
contract,  tort or  otherwise)  arising  out of or  relating  to any of the Loan
Documents, the Advances or the actions of the Administrative Agent or any Lender
Party in the negotiation, administration, performance or enforcement thereof.


                                  ARTICLE IX

                                 PSC GUARANTY

     SECTION 9.01. PSC Guaranty.  PSC unconditionally and irrevocably guarantees
(the  undertaking  by PSC under this  Article IX being the "PSC  Guaranty")  the
punctual  payment  when due,  whether at stated  maturity,  by  acceleration  or
otherwise, of all Obligations of each other Loan Party now or hereafter existing
under the Loan Documents,  whether for principal,  interest,  fees, commissions,
expenses or otherwise (such Obligations being the "Guaranteed Obligations"), and
agrees to pay any and all expenses  (including,  without limitation,  reasonable
fees and expenses of counsel) incurred by the Administrative  Agent or any other
Secured Party in enforcing any rights under this PSC Guaranty.  Without limiting
the generality of the  foregoing,  PSC's  liability  shall extend to all amounts
that  constitute  part of the  Guaranteed  Obligations  and would be owed by any
other Loan Party to the  Administrative  Agent or any other  Secured Party under
the Loan Documents but for the fact that they are unenforceable or not allowable
due to the  existence  of a  bankruptcy,  reorganization  or similar  proceeding
involving such other Loan Party.

     SECTION  9.02.  Guaranty  Absolute.  PSC  guarantees  that  the  Guaranteed
Obligations  will be paid  strictly  in  accordance  with the  terms of the Loan
Documents, regardless of any law, regulation or order now or hereafter in effect
in  any  jurisdiction  affecting  any  of  such  terms  or  the  rights  of  the
Administrative  Agent or any other  Secured  Party  with  respect  thereto.  The
Obligations  of PSC under this PSC Guaranty are  independent  of the  Guaranteed
Obligations or any other Obligations of any Loan Party under the Loan Documents,
and a separate  action or actions may be brought and  prosecuted  against PSC to
enforce this PSC Guaranty, irrespective of whether any action is brought against
any other  Loan  Party or  whether  any other  Loan  Party is joined in any such
action or  actions.  The  liability  of PSC  under  this PSC  Guaranty  shall be
absolute,   unconditional  and  irrevocable  irrespective  of,  and  PSC  hereby
irrevocably waives any defenses it may now or hereafter have in any way relating
to, any and all of the following:

          (a) any lack of validity or enforceability of any Loan Document or any
     other agreement or instrument relating thereto;

<PAGE>

          (b) any change in the time,  manner or place of payment  of, or in any
     other  term  of,  all or any of the  Guaranteed  Obligations  or any  other
     Obligations  of any Loan  Party  under  the Loan  Documents,  or any  other
     amendment or waiver of or any consent to departure  from any Loan  Document
     (including,  without limitation, any increase in the Guaranteed Obligations
     resulting from the extension of additional  credit to any Loan Party or any
     of its Subsidiaries or otherwise);

          (c) any taking, exchange,  release or nonperfection of any Collateral,
     or any taking,  release or  amendment  or waiver of or consent to departure
     from any other guarantee, for all or any of the Guaranteed Obligations;

          (d) any manner of application of Collateral,  or proceeds thereof,  to
     all or any of the  Guaranteed  Obligations,  or any manner of sale or other
     disposition of any Collateral for all or any of the Guaranteed  Obligations
     or any other Obligations of any Loan Party under the Loan Documents, or any
     other  property  and  assets  of  any  other  Loan  Party  or  any  of  its
     Subsidiaries;

          (e)  any  change,   restructuring  or  termination  of  the  corporate
     structure or existence of any other Loan Party or any of its Subsidiaries;

          (f) any failure of any Secured Party to disclose to any Loan Party any
     information relating to the financial condition, operations,  properties or
     prospects  of any other Loan Party now or  hereafter  known to such Secured
     Party; or

          (g) any other circumstance (including, without limitation, any statute
     of limitations or any existence of or reliance on any representation by the
     Administrative  Agent or any other  Secured  Party)  that  might  otherwise
     constitute a defense available to, or a discharge of, any other Loan Party,
     PSC or any other guarantor or surety.

This PSC Guaranty shall  continue to be effective or be reinstated,  as the case
may be,  if at any time any  payment  of any of the  Guaranteed  Obligations  is
rescinded or must otherwise be returned by the Administrative Agent or any other
Secured  Party  or by any  other  Person  upon  the  insolvency,  bankruptcy  or
reorganization of any other Loan Party or otherwise,  all as though such payment
had not been made.

     SECTION 9.03. Waivers and Acknowledgments.  (a) PSC hereby  unconditionally
and irrevocably waives promptness, diligence, notice of acceptance and any other
notice with respect to any of the Guaranteed  Obligations and this PSC Guaranty,
and any  requirement  that the PSC Guaranty or any other Secured Party  protect,
secure,  perfect or insure any Lien or any property or assets subject thereto or
exhaust  any right or take any action  against any other Loan Party or any other
Person or any Collateral.

     (b) PSC hereby  unconditionally and irrevocably waives any duty on the part
of the  Administrative  Agent or any other  Secured Party to disclose to PSC any
matter,  fact or thing  relating to the business,  operation or condition of any
other Loan Party or any of its  Subsidiaries  or its  property and assets now or
hereafter known by the Administrative Agent or such Secured Party.
<PAGE>

     (c) PSC  hereby  unconditionally  waives  any  right  to  revoke  this  PSC
Guaranty,  and  acknowledges  that this PSC Guaranty is continuing in nature and
applies to all Guaranteed Obligations, whether existing now or in the future.

     (d) PSC acknowledges that it will receive  substantial  direct and indirect
benefits from the financing arrangements  contemplated by the Loan Documents and
that  the  waivers  set  forth  in  this  Section  9.03  are  knowingly  made in
contemplation of such benefits.

     SECTION  9.04.  Subrogation.  PSC hereby  unconditionally  and  irrevocably
agrees not to exercise any rights that it may now have or may hereafter  acquire
against any other Loan Party or any other insider  guarantor that arise from the
existence,  payment,  performance or enforcement of the Obligations of PSC under
this  PSC  Guaranty  or  under  any  other  Loan  Document,  including,  without
limitation, any right of subrogation,  reimbursement,  exoneration, contribution
or  indemnification  and any right to  participate in any claim or remedy of the
Administrative Agent or any other Secured Party against such other Loan Party or
any other insider guarantor or any Collateral, whether or not such claim, remedy
or right arises in equity or under contract,  statute or common law,  including,
without  limitation,  the right to take or receive from such other Loan Party or
any other insider guarantor,  directly or indirectly,  in cash or other property
or by setoff or in any other  manner,  payment  or  security  on account of such
claim, remedy or right, until such time as all of the Guaranteed Obligations and
all other amounts  payable under this PSC Guarantee shall have been paid in full
in cash,  all of the Letters of Credit shall have  expired,  terminated  or been
cancelled and the  Commitments  shall have expired or terminated.  If any amount
shall be paid to PSC in violation of the immediately  preceding  sentence at any
time  prior  to the  latest  of (a)  the  payment  in full in cash of all of the
Guaranteed  Obligations  and all other amounts  payable under this PSC Guaranty,
(b) the full drawing, termination,  expiration or cancellation of all Letters of
Credit and, (c) the Termination Date, such amount shall be held in trust for the
benefit of the  Administrative  Agent and the other  Secured  Parties  and shall
forthwith be paid to the Administrative  Agent to be credited and applied to the
Guaranteed  Obligations  and all other amounts  payable under this PSC Guaranty,
whether  matured  or  unmatured,  in  accordance  with  the  terms  of the  Loan
Documents,  or to be held as Collateral for any Guaranteed  Obligations or other
amounts payable under this PSC Guaranty thereafter arising. If (i) PSC shall pay
to the Administrative Agent all or any part of the Guaranteed Obligations,  (ii)
all of the Guaranteed  Obligations  and all other amounts payable under this PSC
Guaranty  shall  have been paid in full in cash,  (iii) all  of the  Letters  of
Credit shall have expired,  terminated or been cancelled,  (iv) the  Termination
Date shall have occurred,  and (v) the Working  Capital  Termination  Date shall
have occurred,  the Administrative  Agent and the other Secured Parties will, at
PSC's  request and expense,  execute and deliver to PSC  appropriate  documents,
without recourse and without  representation or warranty,  necessary to evidence
the transfer of subrogation to PSC of an interest in the Guaranteed  Obligations
resulting from the payment made by PSC.

     SECTION 9.05.  Continuing  Guarantee;  Assignments.  This PSC Guaranty is a
continuing  guaranty  and shall  (a) remain  in full force and effect  until the
latest of (i) the payment in full in cash of all of the  Guaranteed  Obligations

<PAGE>

and all other amounts  payable  under this PSC Guaranty,  (ii) the full drawing,
termination,  expiration or cancellation of all Letters of Credit, and (iii) the
Termination  Date,  (b) be binding upon PSC, its  successors and assigns and (c)
inure to the benefit of, and be enforceable by, the Administrative Agent and the
other Secured Parties and their respective successors,  transferees and assigns.
Without  limiting  the  generality  of clause (c) of the  immediately  preceding
sentence,  any Lender Party may assign or otherwise  transfer all or any portion
of  its  rights  and  obligations  under  this  Agreement  (including,   without
limitation,  all or any portion of its Commitment or  Commitments,  the Advances
owing to it and the Notes held by it) to any other Person, and such other Person
shall  thereupon  become vested with all the benefits in respect thereof granted
to such  Lender  Party  under  this  Article  VI or  otherwise,  in each case as
provided in Section 8.07.

<PAGE>

     IN WITNESS  WHEREOF,  the parties  hereto have caused this  Agreement to be
executed by their respective officers thereunto duly authorized,  as of the date
first above written.

                                          PSC ACQUISITION INC.


                                          By    /s/ William J. Woodard
                                                    William J. Woodard 
                                          Title: VP - Finance


                                          PSC INC.


                                          By    /s/ William J. Woodard
                                                    William J. Woodard  
                                          Title: VP - Finance
 

                                          FLEET BANK, as Administrative Agent


                                          By    /s/ Jeff Kenefick
                                                    Jeff Kenefick  
                                             Title: Assistant VP
 

                                          FLEET BANK, as Initial Issuing Bank


                                          By    /s/ Jeff Kenefick
                                                    Jeff Kenefick 
                                             Title: Assistant VP

<PAGE>

                                Initial Lenders


                                          CORESTATES BANK, N.A.


                                          By    /s/ Brian M. Haley
                                                    Brian M. Haley 
                                             Title: Vice President


                                          FLEET BANK


                                          By    /s/ Jeff Kenefick
                                                    Jeff Kenefick     
                                             Title: Assistant VP


                                          KEY BANK NATIONAL ASSOCIATION


                                          By    /s/ Lawrence A. Mack
                                                    Lawrence A. Mack   
                                             Title: Vice President


                                          MANUFACTURERS & TRADERS
                                             TRUST COMPANY


                                          By   /s/ Philip M. Smith
                                                   Philip M. Smith  
                                             Title:Regional Senior VP


                                          PILGRIM AMERICA PRIME RATE TRUST


                                          By   /s/ Howard Tiffen
                                                   Howard Tiffen    
                                             Title:Senior Vice President


                                          SUMITOMO BANK


                                          By   /s/ Brian M. Smith & James Drum
                                                   Brian M. Smith & James Drum
                                             Title:Sr. VP Regional Mgr (East)
                                                   & VP NY Office
<PAGE>
                               FORM OF TERM A NOTE

                                 PROMISSORY NOTE



$                                                           Dated: July __, 1996
- - --------------------------------

     FOR VALUE RECEIVED,  the  undersigned,  PSC  Acquisition,  Inc., a Delaware
corporation  (together with the Surviving  Corporation (as defined in the Credit
Agreement  referred to below),  the  "Borrower"),  HEREBY PROMISES TO PAY to the
order of Fleet Bank (the  "Lender")  for the account of its  Applicable  Lending
Office (as  defined in the Credit  Agreement  referred  to below) the  principal
amount of the Term A  Advance  (as  defined  below)  owing to the  Lender by the
Borrower  pursuant  to the  Credit  Agreement,  dated  as of July  __,  1996 (as
amended,  supplemented  or otherwise  modified,  the "Credit  Agreement";  terms
defined  therein being used herein as therein  defined) among the Borrower,  the
Lender and certain other lender parties thereto,  Fleet Bank, as Initial Issuing
Bank,  and Fleet  Bank,  as  Administrative  Agent for the Lender and such other
lender  parties,  on the  dates  and  in the  amounts  specified  in the  Credit
Agreement.

     The Borrower promises to pay interest on the unpaid principal amount of the
Term A Advance from the date of such Term A Advance until such principal  amount
is paid in full,  at such  interest  rates,  and payable at such  times,  as are
specified in the Credit Agreement.

     Both  principal  and  interest  are  payable in lawful  money of the United
States of America to Fleet Bank, as  Administrative  Agent,  at One East Avenue,
Rochester,  N.Y.  14638,  Account  No.  1983580,  in same day funds.  The Term A
Advance  owing to the Lender by the Borrower and the maturity  thereof,  and all
payments made on account of principal  thereof,  shall be recorded by the Lender
and, prior to any transfer hereof,  endorsed on the grid attached hereto,  which
is part of this Promissory Note.

     This Promissory Note is one of the Notes referred to in, and is entitled to
the benefits of, the Credit Agreement. The Credit Agreement, among other things,
(i) provides  for the making of a single term  advance (the "Term A Advance") by
the Lender to the  Borrower  in an amount not to exceed the U.S.  dollar  amount
first above mentioned, the indebtedness of the Borrower resulting from such Term
A Advance being evidenced by this Promissory Note, and (ii) contains  provisions
for  acceleration  of the maturity  hereof upon the happening of certain  stated
events and also for  prepayments  on account of  principal  hereof  prior to the
maturity hereof upon the terms and conditions therein specified. The obligations
of the Borrower under this  Promissory  Note,  and the  obligations of the other
Loan Parties under the Loan Documents, are secured by the Collateral as provided
in the Loan Documents.

     This  Promissory Note shall be governed by and construed in accordance with
the laws of the State of New York.

                                    PSC ACQUISITION, INC.



                                    By                             
                                        Name:
                                        Title:
<PAGE>

              Term Advances And Payments Of Principal

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                                 Amount Of                                 
                  Amount Of    Principal Paid Unpaid Principal Notation
     Date       Term Advance    Or Prepaid       Balance        Made By
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<PAGE>

                              FORM OF TERM B NOTE

                                 Promissory Note



$                                                         Dated:  July __, 1996
 -----------------------------

     FOR VALUE RECEIVED,  the  undersigned,  PSC  Acquisition,  Inc., a Delaware
corporation  (together with the Surviving  Corporation (as defined in the Credit
Agreement  referred to below),  the  "Borrower"),  HEREBY PROMISES TO PAY to the
order of Pilgrim  America Prime Rate Trust (the "Lender") for the account of its
Applicable Lending Office (as defined in the Credit Agreement referred to below)
the  principal  amount of the Term B Advance  (as  defined  below)  owing to the
Lender by the Borrower  pursuant to the Credit  Agreement,  dated as of July __,
1996 (as amended,  supplemented or otherwise  modified,  the "Credit Agreement";
terms defined therein being used herein as therein  defined) among the Borrower,
the Lender and certain  other lender  parties  thereto,  Fleet Bank,  as Initial
Issuing Bank,  and Fleet Bank, as  Administrative  Agent for the Lender and such
other lender  parties,  on the dates and in the amounts  specified in the Credit
Agreement.

     The Borrower promises to pay interest on the unpaid principal amount of the
Term B Advance from the date of such Term B Advance until such principal  amount
is paid in full,  at such  interest  rates,  and payable at such  times,  as are
specified in the Credit Agreement.

     Both  principal  and  interest  are  payable in lawful  money of the United
States of America to Fleet Bank, as  Administrative  Agent,  at One East Avenue,
Rochester,  N.Y.  14638,  Account  No.  1983580,  in same day funds.  The Term B
Advance  owing to the Lender by the Borrower and the maturity  thereof,  and all
payments made on account of principal  thereof,  shall be recorded by the Lender
and, prior to any transfer hereof,  endorsed on the grid attached hereto,  which
is part of this Promissory Note.

     This Promissory Note is one of the Notes referred to in, and is entitled to
the benefits of, the Credit Agreement. The Credit Agreement, among other things,
(i) provides  for the making of a single term  advance (the "Term B Advance") by
the Lender to the  Borrower  in an amount not to exceed the U.S.  dollar  amount
first above mentioned, the indebtedness of the Borrower resulting from such Term
B Advance being evidenced by this Promissory Note, and (ii) contains  provisions
for  acceleration  of the maturity  hereof upon the happening of certain  stated
events and also for  prepayments  on account of  principal  hereof  prior to the
maturity hereof upon the terms and conditions therein specified. The obligations
of the Borrower under this  Promissory  Note,  and the  obligations of the other
Loan Parties under the Loan Documents, are secured by the Collateral as provided
in the Loan Documents.

     This  Promissory Note shall be governed by and construed in accordance with
the laws of the State of New York.

                                    PSC ACQUISITION, INC.



                                    By                             
                                        Name:
                                        Title:
<PAGE>

              Term Advances And Payments Of Principal

===========================================================================
                                 Amount Of                                 
                  Amount Of    Principal Paid Unpaid Principal Notation
     Date       Term Advance    Or Prepaid       Balance        Made By
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<PAGE>
                              FORM OF TERM WORKING
                                 CAPITAL ADVANCE
                                 Promissory Note


$                                                          Dated: July __, 1996
 --------------------

     FOR VALUE RECEIVED,  the  undersigned,  PSC  Acquisition,  INC., a Delaware
corporation  (together with the Surviving  Corporation (as defined in the Credit
Agreement  referred to below),  the  "Borrower"),  HEREBY PROMISES TO PAY to the
order of Manufacturers & Traders Trust Company (the "Lender") for the account of
its Applicable  Lending Office (as defined in the Credit  Agreement  referred to
below) the  aggregate  principal  amount of the  Working  Capital  Advances  (as
defined  below)  owing to the  Lender by the  Borrower  pursuant  to the  Credit
Agreement,  dated as of July __, 1996 (as  amended,  supplemented  or  otherwise
modified,  the "Credit  Agreement";  terms defined  therein being used herein as
therein defined) among the Borrower, the Lender and certain other lender parties
thereto,  Fleet Bank, as Initial Issuing Bank, and Fleet Bank, as Administrative
Agent for the Lender and such  other  lender  parties,  on the  Working  Capital
Termination Date.

     The  Borrower  promises to pay interest on the unpaid  principal  amount of
each Working Capital Advance from the date of such Working Capital Advance until
such principal  amount is paid in full, at such interest  rates,  and payable at
such times, as are specified in the Credit Agreement.

     Both  principal  and  interest  are  payable in lawful  money of the United
States of America to Fleet Bank, as  Administrative  Agent,  at One East Avenue,
Rochester,  N.Y.  14638,  Account No. 1983580,  in same day funds.  Each Working
Capital  Advance  owing to the Lender by the Borrower and the maturity  thereof,
and all payments made on account of principal thereof,  shall be recorded by the
Lender and, prior to any transfer hereof,  endorsed on the grid attached hereto,
which is part of this Promissory Note.

     This Promissory Note is one of the Notes referred to in, and is entitled to
the benefits of, the Credit Agreement. The Credit Agreement, among other things,
(i) provides for the making of working  capital  advances (the "Working  Capital
Advances")  by the  Lender to the  Borrower  from  time to time in an  aggregate
amount not to exceed at any time  outstanding the U.S. dollar amount first above
mentioned,  the  indebtedness  of the Borrower  resulting from each such Working
Capital  Advance  being  evidenced by this  Promissory  Note,  and (ii) contains
provisions for acceleration of the maturity hereof upon the happening of certain
stated events and also for  prepayments on account of principal  hereof prior to
the  maturity  hereof  upon the  terms and  conditions  therein  specified.  The
obligations of the Borrower under this  Promissory  Note, and the obligations of
the other Loan Parties under the Loan  Documents,  are secured by the Collateral
referred to in the Collateral Documents.

     This Note shall be governed by and construed in accordance with the laws of
the State of New York.

                                    PSC ACQUISITION, INC.



                                    By                             
                                        Name:
                                        Title:
<PAGE>

        Working Capital Advances And Payments Of Principal

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     Date         Amount Of      Amount Of
                Working Capital Principal Paid Unpaid Principal Notation
                   Advance      Or Prepaid       Balance        Made By
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                                                                    Exhibit 10.3

                  REGISTRATION RIGHTS and HOLDBACK AGREEMENT


     This is a REGISTRATION  RIGHTS AND HOLDBACK  AGREEMENT,  (the  "Agreement")
dated as of July 12,  1996,  by and between  SPECTRA-PHYSICS,  INC.,  a Delaware
corporation ("SPI") and PSC Inc., a New York corporation ("PSC").

     WHEREAS, SPI, PSC and Spectra-Physics  Holding, S.A., a French corporation,
have  entered  into  an  Asset  and  Stock  Purchase  Agreement  (the  "Purchase
Agreement"),  dated  May 20,  1996  pursuant to which SPI will  receive  977,135
shares of Buyer's common stock, par value $.01 per share; and

     WHEREAS,  PSC wishes to grant to SPI registration  rights for the shares of
common stock of PSC that SPI acquired  pursuant to the Purchase  Agreement,  and
SPI is willing to agree to certain restrictions on the sale of such shares;

     NOW,  THEREFORE,  in  consideration  of the premises  and mutual  covenants
herein contained, the parties hereby agree as follows:

1.    Definitions.


     As used herein, the following terms have the following respective meanings:

     "Common Stock" means the common stock, par value $.01 per share, of PSC.

     "Covered  Shares"  means the  Registrable  Securities  of SPI included in a
registration statement pursuant to the terms hereof.

     "Exchange Act" means the Securities and Exchange Act of 1934, as amended.

     "Indemnified Party" has the meaning given to that term in Section 6 hereof.

     "Indemnifying  Party"  has the  meaning  given to that  term in  Section  6
hereof.

<PAGE>

     "Lock-up  Period" means the period  beginning on the date hereof and ending
on the date that is the earlier of (i) one year from the date hereof or (ii) 180
days from the date of the  consummation  of the first public  offering of equity
securities by PSC after the date hereof.

     "Piggyback  Registration"  has the meaning  given to that term in Section 3
hereof.

     "Piggyback  Registration  Statement" means a registration  statement of PSC
filed with the SEC on a form for which PSC then qualifies and which includes the
Registrable  Securities to be registered for sale thereunder pursuant to Section
3  hereof,  including  post-effective  amendments,  in each case  including  the
prospectus contained therein, all exhibits thereto and all material incorporated
by reference therein.

     "Registrable  Securities"  means (i) the shares of Common Stock received by
SPI  pursuant to the  Purchase  Agreement  and (ii) any Common  Stock  issued or
issuable with respect to the  Registrable  Securities by way of a stock dividend
or stock split or in connection with a combination of shares,  recapitalization,
merger,  consolidation or other  reorganization.  Any Registrable  Security will
cease to be a Registrable  Security when (i) a  registration  statement covering
such Registrable Security has been declared effective by the SEC and it has been
disposed of pursuant to such effective registration  statement,  (ii) it is sold
under  circumstances  in which all of the applicable  conditions of Rule 144 are
met,  or  (iii) it  has been  otherwise  transferred,  PSC has  delivered  a new
certificate  or other  evidence of ownership for it not bearing any  restrictive
legend citing the absence of  registration  thereof and it may be resold without
subsequent registration under the Securities Act.

     "Registration  Expenses"  has the meaning  given to that term in Section 12
hereof.

     "Registration  Statement" means any Piggyback Registration Statement or any
Shelf Registration Statement.

     "Sec" means the U.S Securities and Exchange Commission.

     "Securities Act" means the Securities Act of 1933, as amended.



<PAGE>

     "Securities  Purchase  Agreements"  shall  mean  those  certain  Securities
Purchase  Agreements  dated as of the date  hereof by and  between  SpectraScan,
Inc., a Delaware corporation, PSC and the institutional investors named therein,
as such Securities Purchase Agreements exist on the date hereof.

     "Shelf  Registration"  means a registration  effected pursuant to Section 2
hereof.

     "Shelf Registration  Statement" means a "shelf"  registration  statement of
PSC filed  pursuant  to the  provisions  of Section 2 hereof  with the SEC which
covers all of the Registrable  Securities on an appropriate  form under Rule 415
under the  Securities  Act, or any similar  rule that may be adopted by the SEC,
and any amendments and  supplements to such  registration  statement,  including
post-effective  amendments,  in each case  including  the  prospectus  contained
therein,  all  exhibits  thereto  and all  material  incorporated  by  reference
therein.

     All  capitalized  terms used herein that are not otherwise  defined  herein
shall have the meanings ascribed thereto in the Purchase Agreement.


2.    Shelf Registration.

     (a) On or before 90 days after the date hereof, PSC shall file with the SEC
a Shelf Registration Statement relating to the offer and sale of the Registrable
Securities  by SPI  from  time  to  time  in  accordance  with  the  methods  of
distribution  elected by SPI and set forth in such Shelf Registration  Statement
and,  thereafter,  shall use its best  efforts to cause such Shelf  Registration
Statement to be declared  effective  under the  Securities Act as promptly as is
practicable after the date of filing of such Registration Statement.

     (b) PSC shall use its best efforts to keep the Shelf Registration Statement
continuously  effective in order to permit the prospectus forming a part thereof
to be  useable  by SPI for a period  of  three  years  from  the date the  Shelf
Registration  Statement is declared  effective or such shorter  period that will
terminate  when all  Covered  Shares have been sold  pursuant to a  Registration
Statement or otherwise cease to be Registrable  Securities;  provided that PSC's
obligation to keep the Shelf Registration  Statement effective shall cease three

<PAGE>

months after such time as SPI owns less than 10% of the  Registrable  Securities
it owns on the date hereof  unless the reason  SPI's  ownership  of  Registrable
Securities  fell  below  the  10%  level  was  due to the  "cut-back"  provision
contained in the last  sentence of Section 3(b) hereof.  PSC shall be deemed not
to have used its best efforts to keep the Shelf Registration Statement effective
during the  requisite  period if PSC  voluntarily  takes any  action  that would
result  in SPI not being  legally  permitted  to offer and sell any  Registrable
Securities  during that period  unless (i) such action is required by applicable
law,  (ii) upon the  occurrence  of any event  that  requires  a  supplement  or
amendment to the Shelf  Registration  Statement as described in Section 5(f) and
such  action is taken by PSC in good  faith and for valid  business  reasons  or
(iii) the continued  effectiveness  of the Shelf  Registration  Statement  would
require PSC to disclose a material  financing,  acquisition  or other  corporate
transaction  and the Board of  Directors  of PSC shall have  determined  in good
faith  that  such  disclosure  is not in  the  best  interests  of PSC  and  its
stockholders,  and,  in the case of clause  (i) or (ii)  above,  PSC  thereafter
promptly complies with the requirement of paragraph 5(f) below.

3.    Piggy-back Registration.

     (a)  Subject  to the  provisions  of  this  Section 3,  if PSC at any  time
proposes to register  any of its equity  securities  (as defined in the Exchange
Act)  under the  Securities  Act,  whether  or not for sale for its own  account
(other than  pursuant to Section 2 hereof or other than pursuant to Section 11.1
of the Securities Purchase Agreements), and the registration form to be used may
be used for the registration of Registrable Securities,  PSC each such time will
give written notice of such proposed  filing to SPI as soon as practicable  (but
in no event less than twenty days before the anticipated  filing date), and such
notice shall offer SPI the  opportunity  to include  such number of  Registrable
Securities   in  the   registration   as  SPI  may   request   (the   "Piggyback
Registration");  provided  that SPI  notify  PSC of the  amount  of  Registrable
Securities to be registered not less than ten days before the anticipated filing
date.

     (b) PSC shall use its best  efforts to cause the  managing  underwriter  or
underwriters  of a proposed  underwritten  offering  to permit  the  Registrable
Securities  requested  to be included  in the  registration  statement  for such
offering  on the same terms and  conditions  as any  similar  securities  of PSC
included therein.  Notwithstanding the foregoing, if the managing underwriter of
such  registration  advises  PSC in writing  (with a copy to SPI)  that,  in its
opinion,  inclusion  of the number of  Registrable  Securities  requested  to be
included  in the  registration  would  adversely  affect  the  marketing  of the

<PAGE>

securities  to be sold by PSC in such  offering,  then PSC will  include in such
registration  only the  number  of  Registrable  Securities  recommended  by the
managing  underwriter  that may be  included  without  adversely  affecting  the
marketing of the securities to be sold by PSC in such offering provided that, if
any  securities  are being  offered for the account of any person other than PSC
and the holders of the  Registrable  Securities,  the reduction in the number of
Registrable  Securities  included  in such  registration  shall not  represent a
greater percentage of the amount of Registrable  Securities originally requested
to be registered and sold in such  registration  than the lowest such percentage
reduction imposed upon any other person.

4.    Lock-up And Holdback Agreements.

     (a) Spi Lock-up. (i) During the Lock-up Period, without PSC's prior written
consent,  SPI agrees not to effect any public sale or distribution of any of the
Registrable Securities except pursuant to an available Piggyback Registration.

     (ii) If PSC enters into an underwriting agreement in connection with a firm
underwritten  offering of shares of its Common Stock, SPI will not, if requested
by the managing underwriter for such offering and PSC, effect any public sale or
distribution  of Common Stock during the 10 days prior to, and during the 90-day
period beginning on, the effective date of such registration statement.

     (b)  Psc  Holdback.  If  SPI  enters  into  an  underwriting  agreement  in
connection  with  a  firm  underwritten   offering  of  shares  of  Registerable
Securities  (other than in connection with a Piggyback  Registration),  PSC will
not, if requested by the managing  underwriter for such offering and SPI, effect
any public sale or  distribution  of any Common Stock or securities  convertible
into or  exchangeable  or exercisable for such Common Stock (other than pursuant
to a registration  statement on Form S-8 or any successor  form),  during the 10
days before,  and during the 90-day period  beginning on, the effective  date of
such registration statement.
<PAGE>

5.    Registration Procedures.

     Whenever SPI has requested  that any  Registrable  Securities be registered
pursuant to Sections 2 or 3 hereof,  PSC will use its reasonable best efforts to
effect the  registration of such  Registrable  Securities in accordance with the
intended  method of  disposition  thereof as  promptly  as  practicable,  and in
connection with any such  registration,  PSC will as  expeditiously  as possible
(Provided  that  nothing  contained  herein  prohibits  PSC  from  abandoning  a
registration  in which SPI has  requested to  participate  pursuant to Section 3
hereof):

     (a) with regard to a Piggyback  Registration and, subject to the provisions
of Section 2, with regard to the Shelf  Registration,  prepare and file with the
SEC a  Registration  Statement  and use its best  efforts  to cause  such  filed
Registration  Statement to become  effective;  Provided that (i) before filing a
Registration  Statement or prospectus or any amendments or supplements  thereto,
PSC will  furnish to one counsel  selected  by SPI copies of all such  documents
proposed to be filed  sufficiently  in advance of filing to provide such counsel
with a reasonable  opportunity to review such documents and comment  thereon and
(ii), after the filing of the Registration  Statement,  PSC will promptly notify
SPI of any stop order issued or, to the knowledge of PSC,  threatened by the SEC
and take all reasonable actions required to prevent the entry of such stop order
or to remove it if entered;

     (b) prepare and file with the SEC such  amendments  and  supplements to the
Registration Statement and the prospectus used in connection therewith as may be
necessary to (i) keep the  Registration  Statement  effective for a period which
will  terminate  when all Covered Shares have been sold and (ii) comply with the
provisions of the Securities Act with respect to the  disposition of all Covered
Shares during such period in accordance with the intended methods of disposition
by SPI  thereof  set  forth in the  Registration  Statement,  including  without
limitation,  such amendments and supplements to the Shelf Registration Statement
and related  prospectus as may be necessary to permit  Covered Shares to be sold
pursuant thereto in an underwritten offering;

     (c) furnish to SPI, before filing the Registration Statement, if requested,
copies of the  Registration  Statement as proposed to be filed,  and  thereafter
furnish  to SPI such  number  of  copies  of the  Registration  Statement,  each
amendment and supplement  thereto (in each case including all exhibits thereto),
the  prospectus   included  in  the  Registration   Statement   (including  each
preliminary prospectus) and such other document as SPI may reasonably request in
order to facilitate the disposition of the Covered Shares owned by SPI;
<PAGE>

     (d) use its best  efforts to register or qualify the Covered  Shares  under
such  other  securities  or blue sky laws of such  jurisdictions  in the  United
States as SPI  reasonably  (in  light of SPI's  intended  plan of  distribution)
requests  and do any and all  other  acts and  things  which  may be  reasonably
necessary or  advisable  to enable SPI to  consummate  the  disposition  in such
jurisdictions  of its Covered Shares;  provided that PSC will not be required to
(i) qualify  generally  to do business  in any  jurisdiction  where it would not
otherwise be required to qualify but for this paragraph (d), (ii) subject itself
to  taxation in any such  jurisdiction  or (iii)  consent to general  service of
process in any such jurisdiction;

     (e) use its best efforts to cause the Covered Shares to be registered  with
or  approved  by such  other  governmental  agencies  or  authorities  as may be
necessary  by virtue of the  business  and  operations  of PSC to enable  SPI to
consummate the disposition of the Covered Shares;

     (f) notify SPI of the occurrence of an event requiring the preparation of a
supplement or amendment to a  Registration  Statement or a prospectus  contained
therein so that,  as  thereafter  delivered  to the  purchasers  of such Covered
Shares,  a Registration  Statement or such prospectus will not contain an untrue
statement of a material  fact or omit to state any material  fact required to be
stated  therein or necessary to make the  statements  therein not misleading and
promptly make available to SPI any such supplement or amendment;

     (g) enter into customary agreements (including an underwriting agreement in
customary form if the distribution of the Covered Shares is otherwise to be made
in an  underwritten  offering)  and take such other  actions  as are  reasonably
required in order to expedite or  facilitate  the  disposition  of such  Covered
Shares;

     (h) make available for inspection by SPI, any underwriter  participating in
any  disposition  pursuant  to such  Registration  Statement  and any  attorney,
accountant or other professional  retained by SPI or underwriter  (collectively,
the  "Inspectors"),   all  financial  and  other  records,  pertinent  corporate
documents and properties of PSC (collectively,  the "Records") as are reasonably
necessary to enable them to exercise due  diligence,  and cause PSC's  officers,
directors and employees to supply all  information  reasonably  requested by any
such Inspectors in connection with the Registration Statement;
<PAGE>

     (i) in the event an offering of  Registrable  Securities  is pursuant to an
underwritten  offering,  use its best  efforts  to  obtain a  comfort  letter or
comfort letters from PSC's independent  public accountants in customary form and
covering such matters of the type customarily  covered by comfort letters as the
managing underwriter reasonably requests;

     (j) otherwise use its best efforts to comply with all applicable  rules and
regulations of the SEC, and make generally available to its security holders, as
soon as reasonably practicable,  an earnings statement satisfying the provisions
of Section 11(a) of the  Securities  Act and covering a period of twelve months,
beginning  within  three  months after the  effective  date of the  registration
statement;

     (k) use its best  efforts to cause all  Covered  Shares to be listed on the
NASDAQ National Market or listed on each national  securities  exchange on which
the Common Stock is then listed; and

     (l) provide a transfer  agent and registrar  for all of the Covered  Shares
not later than the effective date of such Registration Statement.
<PAGE>

6.    Indemnification.

     (a)  Indemnification by PSC. PSC agrees to indemnify and hold harmless SPI,
its  officers,  directors,  employees and agents,  and each Person,  if any, who
controls SPI within the meaning of Section 15 of the  Securities  Act or Section
20 of the Exchange Act against any and all losses, claims, damages,  liabilities
and expenses  (including  reasonable costs of  investigation)  arising out of or
based upon any untrue  statement or alleged untrue  statement of a material fact
contained in any  Registration  Statement or prospectus  relating to the Covered
Shares, in any amendment or supplement thereto,  in any preliminary  prospectus,
or arising out of or based upon any  omission  or any alleged  omission to state
therein a material fact  required to be stated  therein or necessary to make the
statements  therein  not  misleading,  except  insofar as such  losses,  claims,
damages,  liabilities  or  expenses  arise out of, or are based  upon,  any such
untrue  statement  or  omission or  allegation  thereof  based upon  information
furnished in writing to PSC by SPI or on SPI's behalf expressly for use therein.

     (b)  Indemnification By Spi. SPI agrees to indemnify and hold harmless PSC,
its directors  and officers and each party,  if any, who controls PSC within the
meaning of either Section 15 of the Securities Act or Section 20 of the Exchange
Act to the same extent as the foregoing indemnity from PSC to SPI, but only with
respect to information  furnished in writing by SPI or on SPI's behalf expressly
for use in any  Registration  Statement  or  prospectus  relating to the Covered
Shares, or any amendment or supplement thereto, or any preliminary prospectus.

     (c) Conduct Of  Indemnification  Proceedings.  If any action or  proceeding
(including any  governmental  investigation)  is brought or asserted against any
party  entitled  to   indemnification   under  clauses  (a)  or  (b)  above  (an
"Indemnified  Party") in respect of which indemnity may be sought from any party
who has agreed to provide such  indemnification (an "Indemnifying  Party"),  the
Indemnifying Party will assume the defense thereof,  including the employment of
counsel  reasonably  satisfactory to such Indemnified Party, and will assume the
payment of all expenses.  Such  Indemnified  Party will have the right to employ
separate  counsel in any such action and to participate in the defense  thereof,
but the  fees  and  expenses  of such  counsel  will be at the  expense  of such
Indemnified Party unless (i) the Indemnifying  Party has agreed to pay such fees
<PAGE>

and  expenses  or (ii) the  named  parties  to any  such  action  or  proceeding
(including any impleaded  parties) include both such  Indemnified  Party and the
Indemnifying  Party, and such Indemnified Party has been advised by counsel that
there  is a  conflict  of  interest  on the  part  of  counsel  employed  by the
Indemnifying  Party to represent such Indemnified  Party (in which case, if such
Indemnified  Party notifies the Indemnifying  Party in writing that it elects to
employ  separate  counsel  at  the  expense  of  the  Indemnifying   Party,  the
Indemnifying  Party will not have the right to assume the defense of such action
or proceeding on behalf of such Indemnified Party; it being understood, however,
that the Indemnifying  Party will not, in connection with any one such action or
proceeding  or  separate  but  substantially   similar  or  related  actions  or
proceedings in the same jurisdiction arising out of the same general allegations
or circumstances,  be liable for the fees and expenses of more than one separate
firm of attorneys  (together with appropriate local counsel) at any time for all
such Indemnified  Parties).  The  Indemnifying  Party will not be liable for any
settlement  of any such  action  or  proceeding  effected  without  its  written
consent,  but if  settled  with  its  written  consent,  or if  there is a final
judgment for the plaintiff in any such action or  proceeding,  the  Indemnifying
Party will indemnify and hold harmless such Indemnified Parties from and against
any loss or liability (to the extent stated above) by reason of such  settlement
or judgment.

7.    Contribution.

     If for  any  reason  the  indemnification  provided  for  in the  preceding
Sections 6(a) and 6(b) is unavailable to an Indemnified Party as contemplated by
those sections,  then the Indemnifying  Party will contribute to the amount paid
or payable by the Indemnified Party as a result of such loss,  claim,  damage or
liability in such  proportion as is appropriate to reflect not only the relative
benefits received by the Indemnified Party and the Indemnifying  Party, but also
the relative fault of the Indemnified Party and the Indemnifying  Party, as well
as any other relevant  equitable  considerations,  Provided that SPI will not be
required to contribute in an amount greater than the difference  between the net
proceeds received by SPI with respect to the sale of any Registrable  Securities
and all amounts already contributed by SPI with respect to such claims.


8.    Participation In Underwritten Registrations.

     With regard to a Piggyback  Registration,  SPI may not  participate  in any
underwritten registration hereunder unless SPI (a) agrees to sell its securities
on the basis provided in any underwriting  arrangements  approved by the parties
entitled to approve  such  arrangements;  and  (b) completes  and  executes  all
questionnaires,  powers of attorney,  indemnities,  underwriting  agreements and
other  documents  reasonably  required  under  the  terms  of such  underwriting

<PAGE>

arrangements  and this Agreement.  Notwithstanding  the previous  sentence,  SPI
shall not be required to make any  representations or warranties to, or make any
agreements with, PSC or any underwriter other than  representations,  warranties
or agreements customary for a non-controlling selling shareholder selling shares
under similar circumstances.  In the event that the Covered Shares included in a
Shelf  Registrations  Statement  are  to be  sold  pursuant  to an  underwritten
offering  the  managing  underwriter  for such  offering  shall be a  nationally
recognized  investment banking firm selected by SPI and be reasonably acceptable
to PSC.

9.    Rule 144.

     PSC  covenants  that it will file any  reports  required  to be filed by it
under the Securities Act and the Exchange Act so as to enable SPI to sell Common
Stock without registration under the Securities Act within the limitation of the
exemptions  provided by Rule 144.  Upon the request of SPI,  PSC will deliver to
SPI a written statement as to whether it has complied with such requirements.

10.   Information.

     PSC may require SPI to promptly  furnish in writing to PSC such information
regarding the distribution of the Registrable  Securities as it may from time to
time reasonably request and such other information as may be legally required or
reasonably requested in connection with such registration.

11.   Amended Or Supplemented Prospectus.

     SPI agrees that,  upon  receipt of any notice from PSC of the  happening of
any event of the kind  described  in  Section 5(f)  hereof,  SPI will  forthwith
discontinue  disposition  of any Covered  Shares  pursuant  to the  Registration
Statement  covering such Covered Shares until SPI's receipt of the copies of the
supplemented or amended prospectus  contemplated by Section 5(f) hereof, and, if

<PAGE>

so directed by PSC,  SPI will  deliver to PSC all copies,  other than  permanent
file copies then in SPI's possession,  of all prospectuses covering such Covered
Shares  at the  time of  receipt  of such  notice,  and  shall  not  effect  any
transaction   with  respect  to  any  Covered  Shares  except  pursuant  to  the
supplemented or amended prospectus. In the event PSC gives such notice, PSC will
extend the period during which such  Registration  Statement  will be maintained
effective by the number of days during the period from and including the date of
the giving of notice  pursuant to Section 5(f) hereof to the date when PSC makes
available  to SPI a  prospectus  supplemented  or amended  to  conform  with the
requirements of Section 5(f) hereof.

12.   Registration Expenses.

     In connection with any  Registration  Statement filed pursuant to Section 2
or Section 3 hereof,  PSC will pay all registration  expenses (the "Registration
Expenses"),  including but not limited to: (i) all registration and filing fees,
(ii) fees and expenses of compliance with  securities or blue sky laws,  subject
to the provisions of Section 5(d),  (including reasonable fees and disbursements
of counsel in connection with blue sky  qualifications  of the Covered  Shares),
(iii)  printing  expenses,  (iv) internal  expenses of PSC  (including,  without
limitation,  all salaries and expenses of its officers and employees  performing
legal or accounting  duties),  (v) the fees and expenses  incurred in connection
with the listing of the Covered Shares,  (vi) fees and  disbursements of counsel
for PSC and  customary  fees  and  expenses  for  independent  certified  public
accountants  retained by PSC (including  the expenses of any comfort  letters or
costs associated with the delivery by independent  certified public  accountants
of a comfort  letter or comfort  letters  requested  pursuant  to  Section  5(i)
hereof),  (vii) the fees and expenses of any special experts  retained by PSC in
connection with such  registration,  and (viii)  reasonable fees and expenses of
one law firm  (designated  by SPI and  reasonably  acceptable  to PSC) acting as
counsel  for  SPI in  connection  with  the  registration  hereunder;  provided,
however,  PSC  will  not  have  any  obligation  to pay any  underwriting  fees,
discounts or commissions  attributable to the sale of Covered Shares (which will
be the  obligation  of SPI) or,  except as otherwise  provided in clause  (viii)
above, any out-of-pocket expenses of SPI (or any agents who manage its accounts)
or fees and disbursements of any counsel for any underwriter in any underwritten
offering.
<PAGE>

13.   Registration Rights.

     PSC agrees that it will not enter into any agreement or arrangements  which
would  grant  any  party a right  to  participate  in any  registration  that is
superior to or in  contravention  of the rights to participate set forth in this
Agreement.

14.  Parties In Interest.

     All covenants and agreements contained in this Agreement by or on behalf of
either  party  hereto  shall  bind and inure to the  benefit  of the  respective
successors  and  assigns of such party  hereto,  whether  so  expressed  or not,
including subsequent holders of Registrable Securities.

15.  Notices.

     All notices, requests, consents and other communications hereunder shall be
in writing and shall be mailed by first-class  registered mail, postage prepaid,
or sent by recognized courier service addressed as follows:

            (a)   if to PSC:

                  PSC Inc.
                  675 Basket Road
                  Webster, NY 14580
                  Telephone:  (716) 265-1600
                  Fax: (716) 265-6402
                  Attention: William J. Woodard, Vice-President -
                    Finance

                  with a copy to:

                  Boylan, Brown, Code, Fowler, Vigdor
                    & Wilson, LLP
                  2400 Chase Square
                  Rochester, NY 14604
                  Telephone:  (716) 232-5300
                  Fax: (716) 232-3528
                  Attention: Martin S. Weingarten, Esq.
<PAGE>

            (b)   if to SPI:
 
                  Spectra-Physics, Inc.
                  108 Webster Building
                  3411 Silverside Road
                  Wilmington, DE 19810
                  Telephone:  (302) 478-4600
                  Fax: (302) 478-8962
                  Attn:  Ms. Barbara Schoenberg

                  with copies to:

                  Spectra-Physics AB
                  Box 5226
                  Sturegatan 32
                  Fourth Floor
                  S-102 45 Stockholm, Sweden
                  Telephone:  011-468-783-0725
                  Fax:  011-468-660-9226
                  Attn:  Mr. Ulf Johansson

                  and

                  Dechert Price & Rhoads
                  4000 Bell Atlantic Tower
                  1717 Arch Street
                  Philadelphia, PA 19103
                  Attention:  Carmen J. Romano, Esquire;

or, in any such case,  at such other  address  or  addresses  as shall have been
furnished in writing by such party to the others.

16. Law Governing.

     This  agreement  shall be governed by and construed in accordance  with the
laws of the state of New York.

17. Entire Agreement.

     This Agreement constitutes the entire Agreement of the parties with respect
to the  subject  mater  hereof  and may not be  modified  or  amended  except in
writing.

18.  Counterparts.

     This Agreement may be executed in two or more  counterparts,  each of which
shall be deemed an original,  but all of which  together  constitute one and the
same instrument.

<PAGE>

     IN WITNESS WHEREOF,  the undersigned have executed this Agreement as of the
day and year first above written.

                              SPECTRA-PHYSICS, INC.



                              /s/ Lennart Rappe
                              By: Lennart Rappe
                              Title: Authorized Representative


                              PSC INC.



                              /s/ William J. Woodard
                              By: William J. Woodard
                              Title: Vice President - Finance


                                                               Exhibit 10.4 

                              NON-COMPETE AGREEMENT

         Agreement   made   this   12th  day  of July,   1996  by  and   between
Spectra-Physics AB, a Swedish corporation  ("Spectra-Physics"),  and PSC Inc., a
New York corporation ("Buyer").

         Spectra-Physics,    Inc.,   a   Delaware   corporation,    Buyer,   and
Spectra-Physics Holdings, S.A., a French corporation, have entered into an Asset
and Stock Purchase Agreement, dated May 20, 1996 (the "Agreement.") Capitalized
terms used and not defined herein shall have the meaning ascribed to them in the
Agreement.

                                      Terms

         In consideration of the covenants set forth herein, and intending to be
legally bound hereby, the parties agree as follows:

     SECTION 1. Compensation.  In consideration of Spectra- Physics' obligations
under this  Agreement,  Buyer  shall pay  Spectra-Physics  the total sum of Five
Million Dollars ($US5,000,000) on the date hereof.

         SECTION  2.  Restrictive  Covenant.  In  consideration  of the  payment
referred to in Section 1, Spectra-Physics  agrees that for a period of three (3)
years from the  Closing,  it shall  not,  directly  or  indirectly  through  any
subsidiary or affiliate,  own, manage,  operate, join, control or participate in
the  ownership,  management,  operation or control of any business  which at any
relevant  time during such period  competes with the Business as conducted as of
the Closing Date in any part of the world.

         Notwithstanding  anything to the contrary  contained in this Section 2,
Buyer hereby agrees that the foregoing  covenant shall not be deemed breached as
a  result  of  (A)  the  ownership  by  Spectra-Physics  or  any  subsidiary  of
Spectra-Physics  of, in the aggregate,  10% or less of the  outstanding  capital
stock of any corporation whose securities are registered  pursuant to Section 12
of the Securities and Exchange Act of 1934, as amended,  or (B) the  acquisition
by Spectra-Physics of any interest in any entity

 

<PAGE>



of which any line of business  competes with the Business as conducted as of the
Closing Date,  directly or indirectly,  in any part of the world,  if within 180
days  thereafter,  Spectra-Physics  disposes  of or  enters  into  a  definitive
agreement with an unaffiliated third party to dispose of such interest.

         SECTION 3. Remedies.  Spectra-Physics  agrees that Buyer's  remedies at
law for any breach by Spectra-Physics of the provisions of Section 2 hereof will
be inadequate,  and that Buyer shall be entitled to an injunction or injunctions
to  prevent  breaches  of the  provisions  of  Section 2 hereof  and to  enforce
specifically such terms and provision.

         SECTION  4.  Waiver of  Breach.  The waiver by Buyer of a breach of any
provision of this Agreement by Spectra-Physics shall not operate or be construed
as a waiver of any other or subsequent breach by  Spectra-Physics of such or any
other provision.

         SECTION  5.  Notices.   All  notices,   requests,   demands  and  other
communications  hereunder  shall be in writing  and shall be deemed to have been
duly given if  personally  delivered  or, if mailed,  three  business days after
being mailed by United States first-class, certified or registered mail, postage
prepaid,  or, if sent by overnight  delivery by a nationally  recognized courier
such as Federal Express,  one business day after deposit with such courier,  or,
if sent by telecopy,  upon  confirmation  of receipt,  to the other party at the
following  addresses  (or at such other  address as shall be given in writing by
any party to the other):

                  If to Spectra-Physics, to:

                           Spectra-Physics AB
                           Box 5226
                           Sturegatan 32
                           Fourth Floor
                           S-102 45 Stockholm, Sweden
                           Telephone:  011-468-663-1602
                           Fax:     011-468-660-9226
                           Attn: Mr. Ulf Johansson

                  With required copies to:

                             Dechert Price & Rhoads
                            4000 Bell Atlantic Tower
                                1717 Arch Street
                             Philadelphia, PA 19103
                            Telephone: (215) 994-2971
                               Fax: (215) 994-2222

 

<PAGE>



                           Attention:  Carmen J. Romano, Esquire

                  If to Buyer, to:

                           PSC Inc.
                                 675 Basket Road
                                Webster, NY 14580
                           Telephone:  (716) 265-1600
                               Fax: (716) 265-6402
                           Attention: William W. Woodard, Vice-President -
                           Finance

                  With required copies to:

                           Boylan, Brown, Code, Fowler, Vigdor
                                  & Wilson, LLP
                                2400 Chase Square
                               Rochester, NY 14604
                           Telephone:  (716) 232-5300
                               Fax: (716) 232-3528
                      Attention: Martin S. Weingarten, Esq.

         SECTION 6. Severability.  If any term or provision of this Agreement or
the application  thereof to any person or circumstance  shall, to any extent, be
held  invalid  or  unenforceable  by a  court  of  competent  jurisdiction,  the
remainder of this Agreement or the  application of any such term or provision to
persons or  circumstances  other  than  those as to which it is held  invalid or
unenforceable shall not be affected thereby, and each term and provision of this
Agreement shall be valid and enforceable to the fullest extent permitted by law.
If any of the  provisions  contained in this  Agreement  shall for any reason be
held to be  excessively  broad as to duration,  scope,  activity or subject,  it
shall  be  construed  by  limiting  and  reducing  it,  so as to  be  valid  and
enforceable   to  the  extent   compatible   with  the  applicable  law  or  the
determination by a court of competent jurisdiction.

         SECTION 7.  Consent  to  Jurisdiction.  Spectra-Physics  and Buyer each
irrevocably  submits to the  jurisdiction  of (a) the courts of the State of New
York,  situated  in the  county of New York and (b) the United  States  District
Court for the  Southern  District  of New York,  for the  purposes  of any suit,
action  or  other  proceeding  arising  out of or  related  to  this  Agreement.
Spectra-Physics  and Buyer each  hereby  irrevocably  consent to the  service of
summons,  complaint  and  any  and all  other  process  in any  such  action  or
proceeding  brought  in such  jurisdictions  within  the  State  of New  York by
delivery of copies of such process to it, at its address  specified in Section 5
of this

 

<PAGE>



Agreement or by certified mail to such address.  Spectra-Physics  and Buyer each
hereby  waives  any  objection  that it may have  based  upon  lack of  personal
jurisdiction,  including,  without  limitation,  any  objection to the laying of
venue or based on grounds of forum non conveniens, which it may now or hereafter
have to the bringing of any such action or proceeding in such jurisdiction.

         SECTION 8.  Governing Law.  This Agreement shall be governed
by and construed in accordance with the laws of the State of New
York.

         SECTION 9. Successors and Assigns.  This Agreement,  and all rights and
powers granted hereby,  will bind and inure to the benefit of the parties hereto
and their  respective  successors  and  assigns.  No party hereto may assign its
rights or delegate its duties and obligations  under this Agreement  without the
prior written consent of the other party hereto.

         SECTION 10. Headings.  The headings  preceding the text of the sections
hereof  are  inserted  solely  for  convenience  of  reference,  and  shall  not
constitute  a part of  this  Agreement,  nor  shall  they  affect  its  meaning,
construction or effect.

         SECTION 11. Amendments.  No amendment to this Agreement
shall be effective unless it shall be in writing and signed by
the party against which it is to be enforced.

         SECTION 12.  Entire  Agreement.  This  Agreement  sets forth all of the
promises, covenants, agreements, conditions and undertakings between the parties
hereto with respect to the subject matter  hereof,  and supersedes all prior and
contemporaneous agreements and undertakings,  inducements or conditions, express
or implied, oral or written, with respect to the subject matter hereof.

 

<PAGE>



                  IN WITNESS  WHEREOF,  the parties  hereto have  executed  this
Agreement on the day and year first above written.

                               SPECTRA-PHYSICS AB



                               By:/s/ Lennart Rappe
                                      Lennart Rappe
                                      Sr. VP & CFO


                               By:/s/ Lennart Rappe
                                      Lennart Rappe
                                      Authorized Representative

                              
                                         PSC Inc.



                               By: /s/ L. Michael Hone
                                       L. Michael Hone
                               Title:  President & CEO


 




                                                                    Exhibit 10.5


                               ESCROW AGREEMENT

     THIS ESCROW  AGREEMENT is dated as of July 12, 1996 (the  "Agreement"),  by
and among PSC Inc., a New York  corporation  ("PSC"),  Spectra-Physics,  Inc., a
Delaware corporation ("SPI") and The Chase Manhattan Bank, N.A., as escrow agent
(the "Escrow Agent").

                                   Background

     A. PSC, SPI and  Spectra-Physics  Holding S.A., a French  corporation  ("SP
Holding"),  have entered into a certain Asset and Stock Purchase Agreement dated
May 20, 1996 (the  "Purchase  Agreement").  All  capitalized  terms used but not
otherwise  defined  herein  shall  have  the  meanings  ascribed  to them in the
Purchase Agreement.

     B. Pursuant to Section 1.5(d) of the Purchase Agreement,  PSC has agreed to
deposit the  Escrowed  Shares into escrow with the Escrow  Agent as security for
certain  indemnification  obligations  of SPI and SP Holding  under the Purchase
Agreement.

     C. A copy of the Purchase  Agreement has been delivered to the Escrow Agent
and the Escrow Agent is willing to act as escrow agent hereunder.

                                      Terms

     In  consideration  of the mutual  covenants and promises  contained in this
Agreement  and the Purchase  Agreement and  intending to be legally  bound,  the
parties hereto do hereby agree as follows:


     1.  ESTABLISHMENT OF ESCROW FUND.  Concurrently  with the execution hereof,
PSC has, in  accordance  with the  Purchase  Agreement,  delivered to the Escrow
Agent  certificates  representing the Escrowed Shares,  and SPI has delivered to
the Escrow Agent stock powers for such  Escrowed  Shares duly executed in blank.
The Escrow Agent  hereby  acknowledges  receipt of the  Escrowed  Shares as more
fully described on the attached  Schedule A. The Escrowed Shares,  together with
any other shares of PSC or other  securities or cash which may be held from time
to time by the Escrow Agent pursuant to the terms hereof, are herein referred to
as the  "Escrow  Fund".  The Escrow  Fund  shall be held by the Escrow  Agent in
accordance with the terms and conditions hereinafter set forth. The Escrow Agent
is hereby  empowered to accept any securities into which the Escrowed Shares may
be converted by virtue of any merger or other  reorganization  during  the term
<PAGE>


of the  escrow  and any such  securities  are  herein  also  referred  to as the
"Escrowed Shares". and any such securities are herein also referred to as
the "Escrowed Shares".

     2.  REPLACEMENT OF THE ESCROWED  SHARES.  At any time and from time to time
during the term of the  escrow,  SPI may  direct  the Escrow  Agent to, and upon
receipt of such  direction  the Escrow Agent  shall,  transfer any or all of the
Escrowed Shares to SPI or as SPI may otherwise direct, provided that at the time
of such transfer SPI delivers to the Escrow  Agent,  in  substitution  therefor,
cash in an amount  equal to the number of Escrowed  Shares to be so  transferred
multiplied by Nine and 50/100 dollars ($9.50) per share (appropriately  adjusted
to reflect any stock splits or stock dividends by PSC) (the "Agreed Value").

     3. INVESTMENTS.

     3.1 The  Escrow  Agent  shall  invest  any cash in the  Escrow  Fund at the
written  direction  of  SPI in  (i)  marketable  direct  obligations  issued  or
unconditionally  guaranteed  by the United  States  Government  or issued by any
agency  thereof  and backed by the full  faith and credit of the United  States;
(ii) marketable direct  obligations  issued by any state of the United States of
America  or  any  political   subdivision  of  any  such  state  or  any  public
instrumentality  thereof,  having the first or second highest rating  obtainable
from either Standard & Poor's Corporation  ("S&P") or Moody's Investors Service,
Inc. ("Moody's");  (iii) commercial paper having, at the time of acquisition,  a
rating of A-1 or P-1 or better from either S&P or Moody's;  (iv) certificates of
deposit or bankers'  acceptances  issued by any commercial  bank organized under
the laws of the United States of America or any state thereof or the District of
Columbia  having  combined  capital and  surplus of not less than  $100,000,000,
provided that if such  commercial  bank is not  organized  under the laws of the
United States of America,  it must be a member of the Federal Deposit  Insurance
Corporation,  (v) money market  mutual  funds  registered  under the  Investment
Company Act of 1940 that invest  primarily in  investments  described in clauses
(i), (ii) and (iii) above including any proprietary  funds advised by the Escrow
Agent, or (vi) repurchase agreements secured by such investments.

     3.2 Any interest or  dividends  earned on the Escrow Fund shall not be part
of the Escrow Fund and shall be paid to SPI by the Escrow Agent  promptly  after
receipt thereof by the Escrow Agent.

     3.3 SPI  shall  furnish  the  Escrow  Agent  with such tax  information  or
documents  as the  Escrow  Agent  may  reasonably  require  to  comply  with its
obligations under any tax law or regulation.
<PAGE>

     4. RIGHTS AS TO ESCROWED SHARES.  SPI shall,  during all times any Escrowed
Shares are in the Escrow Fund, have the right:

     4.1 to vote and  otherwise  exercise  all  other  shareholder  rights  with
respect to the Escrowed Shares;

     4.2 to receive  and to exercise  any right to acquire  further PSC stock or
other securities distributed with respect to the Escrowed Shares; and

     4.3 to receive any  dividends or other  distributions  declared and paid on
the Escrowed Shares.

     5. CLAIMS OF PSC AGAINST THE ESCROW FUND.

     5.1 In the event PSC shall assert a claim for  indemnification  pursuant to
Article VIII of the Purchase Agreement (an  "Indemnification  Claim"), PSC shall
send written notice of the Indemnification  Claim to the Escrow Agent and to SPI
in accordance with Section 10 hereof.  Such notice shall state the basis for the
Indemnification Claim and the total amount claimed and show in reasonable detail
how such amount was computed.  If SPI shall object to the Indemnification  Claim
made by PSC  hereunder,  it shall give written  notice of such  objection to the
Escrow  Agent and to PSC  within  thirty  (30) days after  PSC's  mailing of its
notice.  If no such  objection to the  Indemnification  Claim shall have been so
sent to the Escrow Agent and to PSC within such thirty (30)-day period, then SPI
shall be  deemed  to have  acknowledged  the  correctness  and  validity  of the
Indemnification  Claim for the full amount thereof,  and the Escrow Agent shall,
in satisfaction of such Indemnification  Claim (to the extent the Escrow Fund is
not  exhausted),  transfer  to PSC out of the  Escrow  Fund (a) such  number  of
Escrowed Shares having a value equal to the amount of the Indemnification  Claim
(such Escrowed Shares being valued at the Agreed Value),  plus (b) to the extent
the  Indemnification  Claim  exceeds the value of the Escrowed  Shares,  cash or
other property included in the Escrow Fund having a value equal to such excess.

     5.2 In the  event  that SPI  shall  have  made  timely  objection  to PSC's
Indemnification  Claim,  and  SPI  and PSC  shall  have  failed  to  resolve  or
compromise  the  Indemnification  Claim within thirty (30) days from the date on
which SPI shall have mailed notice of such  objection,  then the validity of the

<PAGE>

Indemnification  Claim shall be settled by a court of competent  jurisdiction or
in such other manner as PSC and SPI shall agree in writing.  During the pendency
of the  resolution of the  objection to payment,  the Escrow Agent shall have no
obligation  to make any  payment to either PSC or SPI. In the event that a court
of  competent  jurisdiction  or other  party  designated  by PSC and SPI finally
determines  (all appeals from any such decision  having been exhausted) that PSC
is entitled to any recovery by reason of its  Indemnification  Claim, the Escrow
Agent shall upon receipt of a signed  statement  executed by both PSC and SPI or
receipt of a final judicial order and affidavit from PSC stating that such order
is nonappealable,  in satisfaction of such Indemnification  Claim (to the extent
the Escrow Fund is not exhausted),  thereupon  transfer to PSC out of the Escrow
Fund (a) such  number of Escrowed  Shares  having a value equal to the amount of
the such recovery (such Escrowed Shares being valued at the Agreed Value),  plus
(b) to the extent the recovery exceeds the value of the Escrowed Shares, cash or
other property included in the Escrow Fund having a value equal to such excess.

     5.3  Nothing  in  this  Escrow   Agreement   shall  limit  PSC's  right  to
indemnification for any Damages not paid in full out of the Escrow Fund.

     6. FIRST RELEASE OF THE ESCROW FUND.

     6.1 On the First  Release Date (as defined  below),  the Escrow Agent shall
transfer to SPI the entire  balance of the Escrow Fund except (a) such number of
Escrowed  Shares having a value equal to the Retention  Value (as defined below)
(such Escrowed Shares being valued at the Agreed Value),  plus (b) to the extent
the  Retention  Value  exceeds the value of the Escrowed  Shares,  cash or other
property included in the Escrow Fund having a value equal to such excess.

     6.2 As used herein, the term "First Release Date" shall mean the earlier of
the following dates: (i) the date six (6) months after the Closing Date, or (ii)
the  first  date on which  PSC  consummates  a  public  offering  of its  equity
securities following the Closing Date.

     6.3 As used herein,  the term "Retention Value" shall mean (a) five hundred
thousand dollars ($500,000),  plus (b) the amount of any Indemnification  Claims
which remain  outstanding  on the First Release Date (as certified in good faith
by PSC  in  writing  to the  Escrow  Agent  and  SPI,  as an  amount  reasonably
calculated by PSC to be sufficient to satisfy such  outstanding  Indemnification
Claims (the "Certified Value")).
<PAGE>

     6.4 On the date any Indemnification  Claim outstanding on the First Release
Date is paid or decided or is otherwise  resolved in  accordance  with Section 5
hereof, the Escrow Agent shall transfer to SPI, out of the Escrow Fund, Escrowed
Shares,  cash or other property  having a value equal to the amount,  if any, by
which the Certified Value for such Indemnification  Claim exceeds the amount, if
any, paid to PSC in  accordance  with Section 5 hereof in  satisfaction  of such
Indemnification Claim.

     7. FINAL RELEASE OF THE ESCROW FUND.

     7.1 On the date  twelve  (12)  months  after the  Closing  Date (the "Final
Release Date"), the Escrow Agent shall transfer to SPI the entire balance of the
Escrow Fund except (a) such  number of Escrowed  Shares  having a value equal to
the Certified Value of any  Indemnification  Claims which remain  outstanding on
the Final Release Date (such Escrowed  Shares being valued at the Agreed Value),
plus (b) to the extent the Certified Value of such  outstanding  Indemnification
Claims  exceeds the value of the  Escrowed  Shares  (being  valued at the Agreed
Value),  cash or other property included in the Escrow Fund having a value equal
to such excess.

     7.2 On the date any Indemnification  Claim outstanding on the Final Release
Date is paid or decided or  otherwise  resolved  in  accordance  with  Section 5
hereof, the Escrow Agent shall transfer to SPI, out of the Escrow Fund, Escrowed
Shares,  cash or other property  having a value equal to the amount,  if any, by
which the Certified Value for such Indemnification  Claim exceeds the amount, if
any, paid to PSC in  accordance  with Section 5 hereof in  satisfaction  of such
Indemnification Claim.

     8. TERMINATION OF ESCROW. The escrow provided for hereunder shall terminate
upon the earlier of the following  dates:  (i) the date on which the Escrow Fund
is  exhausted,  (ii) the first  date  after the Final  Release  Date on which no
Indemnification  Claim remains outstanding,  or (iii) the date on which both PSC
and SPI have notified the Escrow Agent that PSC and SPI have mutually  agreed to
terminate the escrow.  Upon  termination  of the escrow,  the Escrow Agent shall
transfer to SPI any Escrowed Shares and cash or other property  remaining in the
Escrow Fund,  unless PSC and SPI  otherwise  direct the Escrow Agent in writing.
Upon such  release of the  Escrow  Fund the Escrow  Agent  shall be  irrevocably
discharged  and released  from any and all further  responsibility  or liability
with respect to the Escrow Fund.
<PAGE>

     9. DUTIES OF ESCROW AGENT.

     9.1 The  acceptance  by the  Escrow  Agent of its duties as such under this
Escrow  Agreement is subject to the following  terms and  conditions,  which all
parties to this Escrow  Agreement  hereby  agree shall  govern and control  with
respect to the rights,  duties,  liabilities and immunities of the Escrow Agent.
(a) The duties and  responsibilities  of the  Escrow  Agent  shall be limited to
those expressly set forth in this Escrow  Agreement,  and the Escrow Agent shall
not be subject to, nor  obligated to  recognize,  any other  agreements to which
PSC, SPI or both are parties. Reference in this Escrow Agreement to the Purchase
Agreement is for  identification  purposes only and its terms and conditions are
not thereby incorporated herein.

(b) The  duties of the  Escrow  Agent are only such as are  herein  specifically
provided and such duties are purely  ministerial  in nature.  The Escrow Agent's
primary  duty shall be to keep custody of and  safeguard  the Escrow Fund during
the  period of the  escrow,  to invest the Escrow  Fund in  accordance  with the
instructions  given  pursuant  to  Section  3 of  this  Agreement  and  to  make
disbursement from the Escrow Fund in accordance with Sections 5, 6 and 7 hereof.

(c) The Escrow Agent shall be under no  obligation in respect of the Escrow Fund
other than to faithfully  follow the instructions  contained herein or delivered
to the Escrow Agent in accordance  with the Escrow  Agreement.  The Escrow Agent
may rely  and act upon any  written  notice,  instruction,  direction,  request,
waiver,  consent,  receipt  or other  paper or  document  which it in good faith
believes to be genuine and what it purports to be and the Escrow  Agent shall be
subject to no liability with respect to the form, execution or validity thereof.

(d) The Escrow Agent shall not be liable for any error of  judgment,  or for any
act done or step  taken or omitted by it in good  faith,  or for any  mistake of
fact or law, or for anything which it may in good faith do or refrain from doing
in connection  herewith,  except its own gross negligence or willful misconduct.
PSC and SPI, jointly and severally,  shall defend, indemnify and hold the Escrow
Agent harmless from and against any and all claims, losses, damages, liabilities
and expenses,  including  reasonable  attorney's fees, which may be imposed upon
the  Escrow  Agent  or  incurred  by the  Escrow  Agent in  connection  with its
acceptance of the  appointment as escrow agent  hereunder or the  performance of
its duties hereunder, unless the Escrow Agent is determined to have committed an
intentional  wrongful act or to have been grossly  negligent with respect to its
duties under this Escrow Agreement.
<PAGE>

(e) The Escrow Agent may consult  with,  and obtain  advice from,  legal counsel
(which  may  not be  counsel  for PSC or SPI) in the  event  of any  dispute  or
questions as to the  construction of any of the provisions  hereof or its duties
hereunder, and it shall incur no liability in acting in good faith in accordance
with  the  written  opinion  and  instructions  of such  counsel.  The  fees for
consultation  with such  counsel  shall be paid in  accordance  with Section 9.2
hereof.

     9.2 The Escrow Agent shall be entitled to receive the  aggregate sum of One
Thousand Five Hundred dollars ($1,500) per year as compensation for its services
as Escrow Agent hereunder,  together with reasonable counsel fees (including the
allocated cost of in-house counsel) and other out-of-pocket expenses incurred by
the Escrow Agent in the  performance of its duties.  The  compensation,  counsel
fees,  if any, and expenses so payable shall be paid by PSC to the Escrow Agent,
from time to time, upon the written request of the Escrow Agent.

     9.3 The Escrow Agent hereby  accepts its  appointment  and agrees to act as
Escrow Agent under the terms and conditions of this Agreement.

     9.4 The Escrow Agent,  or any successor to it hereafter  appointed,  may at
any time resign and be discharged of the duties and obligations  created by this
Escrow  Agreement  by giving at least 30 days' prior  written  notice to PSC and
SPI.  The Escrow  Agent may be  removed  at any time upon 60 days'  notice by an
instrument  purportedly  signed by an  authorized  representative  of PSC and an
authorized  representative of SPI. Any successor Escrow Agent shall be appointed
by PSC and approved by SPI.  Any such  successor  escrow agent shall  deliver to
both PSC and SPI a written instrument  accepting such appointment  hereunder and
thereupon  it shall  succeed to all of the rights and duties of the Escrow Agent
hereunder and shall take  delivery of the Escrow Fund to hold and  distribute in
accordance with the terms hereof.  If no successor  escrow agent shall have been
appointed  within 30 days after PSC and SPI are  notified of the Escrow  Agent's
resignation or within 60 days after the Escrow Agent is notified of its removal,
the Escrow Agent shall deliver the Escrow Fund to an attorney jointly designated
by PSC and SPI who is not an employee,  officer or director of PSC or SPI.  Upon
the delivery of the Escrow Fund in accordance  with this Section 9.4, the Escrow
Agent shall be discharged from any further duties hereunder.
<PAGE>

     10.  NOTICES.  All  notices,  requests,   demands,   objections  and  other
communications  hereunder  shall be in writing  and shall be deemed to have been
duly given if  personally  delivered  or, if mailed,  three  business days after
being mailed by United States first-class, certified or registered mail, postage
prepaid,  or, if sent by overnight  delivery by a nationally  recognized courier
such as Federal Express,  one business day after deposit with such courier,  or,
if sent by telecopy,  upon  confirmation  of receipt,  to the other party at the
following  addresses  (or at such other  address as shall be given in writing by
any party to the others):

            If to SPI to:

                  Spectra-Physics, Inc.
                  108 Webster Building
                  3411 Silverside Road
                  Wilmington, DE 19810
                  Telephone:  (302) 478-4600
                  Fax:  (302) 478-8962
                  Attn:  Ms. Barbara Schoenberg

            With required copies to:

                  Spectra-Physics AB
                  Box 5226
                  Sturegatan 32
                  Fourth Floor
                  2-102 45 Stockholm, Sweden
                  Telephone:  011-468-783-0725
                  Fax:  011-468-660-9226
                  Attn:  Mr. Ulf Johansson

            and

                  Dechert Price & Rhoads
                  4000 Bell Atlantic Tower
                  1717 Arch Street
                  Philadelphia, PA 19103
                  Telephone:  (215) 994-2971
                  Fax:  (215) 994-2222
                  Attn:  Carmen J. Romano, Esq.
<PAGE>

            If to PSC to:

                  PSC Inc.
                  675 Basket Road
                  Webster, New York 14580
                  Telephone: (716) 265-1600
                  Fax:  (716) 265-6402
                  Attn:  William J. Woodard, Vice President - Finance

            With required copies to:

                  Boylan, Brown, Code, Fowler, Vigdor & Wilson, LLP
                  2400 Chase Square
                  Rochester, NY 14604
                  Telephone: (716) 232-5300
                  Fax: (716) 232-3528
                  Attn:  Martin S. Weingarten, Esq.

            If to the Escrow Agent:

                  Chase Manhattan Bank, N.A.
                  One Chase Square T-10
                  Rochester, New York 14643
                  Attn:  Institutional Trust Department


     11. BINDING EFFECT; THIRD PARTIES. This Agreement shall be binding upon and
inure  to  the  benefit  of the  parties  hereto  and  their  respective  heirs,
executors,  administrators,   representatives,   successors  and  assigns.  This
Agreement  is not  intended  to confer any rights or remedies  hereunder  on any
other person other than the parties hereto.

     12.  AMENDMENTS.  This  Agreement may be amended or modified at any time or
from time to time in a writing  executed by SPI,  PSC and the Escrow  Agent.  No
supplement,  modification or amendment of this Agreement shall be binding unless
executed in writing by each of the parties.  No waiver of any of the  provisions
of this Agreement  shall be deemed to constitute a waiver of any other provision
hereof,  whether or not  similar,  nor shall any waiver  constitute a continuing
waiver.  No waiver  shall be  binding  unless  executed  in writing by the party
making the waiver.
<PAGE>

     13.  GOVERNING LAW. This Escrow Agreement is made and shall be governed by,
construed  and  enforced in  accordance  with the laws of the State of New York,
exclusive of choice of laws  provisions  thereunder.  The parties consent to the
personal  jurisdiction  of all  courts of the State of New York to  resolve  all
disputes  pertaining  to this  Escrow  Agreement  and any  ancillary  agreements
entered  into  pursuant  hereto  and  agree  that  such  jurisdiction  shall  be
exclusive.  If any provision of this Escrow  Agreement shall be prohibited or be
invalid under any law or regulation,  that provision shall be ineffective to the
extent of such  prohibition  or invalidity  without  invalidating  the remaining
provisions of this Agreement.

     14.  ASSIGNMENT.  This Escrow  Agreement shall be binding upon and inure to
the  benefit of the  parties and their  legal  representatives,  successors  and
assigns.

     15.  COUNTERPARTS.  This  Escrow  Agreement  may be executed in one or more
counterparts,  each of  which  shall be  deemed  an  original,  but all of which
together shall constitute but one and the same instrument.

     IN WITNESS  WHEREOF,  the parties hereto have executed this Agreement as of
the day and year first written above.

                                          SPECTRA-PHYSICS, INC.


                                          By:  /s/ John J. Carney
                                                Title:  President


                                          PSC INC.


                                          By:  /s/ L. Michael Hone
                                                Title:  President & CEO


                                          THE CHASE MANHATTAN BANK, N.A.


                                          By:  /s/ Mary Pat Feeney
                                                Title:  Second Vice
                                                          President



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