GALILEO CORP
SC 13D, 1998-12-31
OPTICAL INSTRUMENTS & LENSES
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                       SECURITIES AND EXCHANGE COMMISSION

                             Washington, D.C. 20549

                                  SCHEDULE 13D

                    Under the Securities Exchange Act of 1934
                                (Amendment No. )*

                               Galileo Corporation

- --------------------------------------------------------------------------------
                                (Name of Issuer)

                     Common Stock, par value $.01 per share

- --------------------------------------------------------------------------------
                         (Title of Class of Securities)

                                    363544107

- --------------------------------------------------------------------------------
                                 (CUSIP Number)

                           Andlinger Capital XIII LLC
                                105 Harbor Drive
                               Stamford, CT 06902
                          Attention: Stephen A. Magida
                                 (203) 348-6690

                                 with a copy to:
                                Paul Gluck, Esq.
                             Dechert Price & Rhoads
                    30 Rockefeller Plaza, New York, NY 10012
                                 (212) 698-3533

- --------------------------------------------------------------------------------
 (Name, Address and Telephone Number of Person Authorized to Receive Notices 
                              and Communications)

                                December 22, 1998
- --------------------------------------------------------------------------------
             (Date of Event which Requires Filing of this Statement)

If the filing person has previously  filed a statement on Schedule 13G to report
the  acquisition  which is the subject of this  Schedule 13D, and is filing this
schedule because of Rule 13d-1(b)(3) or (4), check the following box ___
                       
Note:  Schedules  filed in paper format shall include a signed original and five
copies of the  schedule,  including  all  exhibits.  See Rule 13d-7(b) for other
parties to whom copies are to be sent.

*    The  remainder  of this  cover  page  shall be filled  out for a  reporting
     person's  initial  filing on this form with respect to the subject class of
     securities,  and for any subsequent amendment containing  information which
     would alter disclosures provided in a prior cover page.

The information required on the remainder of this cover page shall not be deemed
to be "filed" for the purpose of Section 18 of the  Securities  Exchange  Act of
1934 ("Act") or otherwise  subject to the liabilities of that section of the Act
but  shall be  subject  to all other  provisions  of the Act  (however,  see the
Notes).


<PAGE>


- ------- ------------------------------------------------------------------------
  1
        NAME OF REPORTING PERSON
        SS. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON

        Andlinger Capital XIII LLC
- ------- ------------------------------------------------------------------------
- ------- ------------------------------------------------------------------------
  2
        CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*   (a)  ___
                                                            (b)   X
- -------   
- ------- ------------------------------------------------------------------------
  3
        SEC USE ONLY
- ------- ------------------------------------------------------------------------
- -------
  4
        SOURCE OF FUNDS*

        00
- ------- ------------------------------------------------------------------------
- ------- ------------------------------------------------------------------------
  5
        CHECK BOX IF DICLOSURE OF LEGAL PROCEEDING IS REQUIRED PURSUANT 
        TO ITEMS 2(d) OR 2(E)                                    ___
- ------- ------------------------------------------------------------------------
- ------- ------------------------------------------------------------------------

  6     CITIZENSHIP OR PLACE OR ORGANIZATION

        Connecticut
- ------- ------------------------------------------------------------------------
                          -------- ---------------------------------------------
                             7
    Number of Shares               SOLE VOTING POWER
      Beneficially
                                   0
                          -------- ---------------------------------------------
                          -------- ---------------------------------------------
        owned by             8
 each reporting person             SHARED VOTING POWER

                                   4,000,000
                          -------- ---------------------------------------------
                          -------- ---------------------------------------------
          with               9
                                   SOLE DISPOSITIVE POWER

                                   0
                          -------- ---------------------------------------------
                          -------- ---------------------------------------------
                            10
                                   SHARED DISPOSITIVE POWER

                                   4,000,000
- ------------------------- ------------------------------------------------------
- ------------------------- ------------------------------------------------------
           11
                          AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH 
                          REPORTING PERSON

                          4,000,000
- ------------------------- ------------------------------------------------------
- ------------------------- ------------------------------------------------------
           12
                          CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) 
                          EXCLUDES CERTAIN SHARES*                    ___
- ------------------------- ------------------------------------------------------
- ------------------------- ------------------------------------------------------
           13
                          PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

                          33.1%
- ------------------------- ------------------------------------------------------
- ------------------------- ------------------------------------------------------
           14
                          TYPE OF REPORTING PERSON

                          00
- ------------------------- ------------------------------------------------------

                      *SEE INSTRUCTIONS BEFORE FILLING OUT!



<PAGE>

- ------- ------------------------------------------------------------------------
  1
        NAME OF REPORTING PERSON
        SS. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON

        Gerhard R. Andlinger
- ------- ------------------------------------------------------------------------
- ------- ------------------------------------------------------------------------
  2
        CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*       (a)   ___
                                                                (b)    X
- -------
- ------- ------------------------------------------------------------------------
  3
        SEC USE ONLY
- ------- ------------------------------------------------------------------------
- -------
  4
        SOURCE OF FUNDS*

        PF
- ------- ------------------------------------------------------------------------
- ------- ------------------------------------------------------------------------
  5
        CHECK BOX IF DICLOSURE OF LEGAL PROCEEDING IS REQUIRED PURSUANT TO 
        ITEMS 2(d) OR 2(E)                                       ___
- ------- ------------------------------------------------------------------------
- ------- ------------------------------------------------------------------------
  6
        CITIZENSHIP OR PLACE OR ORGANIZATION

        United States
- ------- ------------------------------------------------------------------------
                          --------- --------------------------------------------
                             7
    Number of Shares                SOLE VOTING POWER
      Beneficially
                                    0
                          --------- --------------------------------------------
                          --------- --------------------------------------------
        owned by             8
 each reporting person              SHARED VOTING POWER

                                    4,000,000
                          --------- --------------------------------------------
                          --------- --------------------------------------------
          with               9
                                    SOLE DISPOSITIVE POWER

                                    0
                          --------- --------------------------------------------
                          --------- --------------------------------------------
                             10
                                    SHARED DISPOSITIVE POWER

                                    4,000,000
- ------------------------- ------------------------------------------------------
- ------------------------- ------------------------------------------------------
           11
                          AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH 
                          REPORTING PERSON

                          4,000,000
- ------------------------- ------------------------------------------------------
- ------------------------- ------------------------------------------------------
           12
                          CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) 
                          EXCLUDES CERTAIN SHARES*                      ___
- ------------------------- ------------------------------------------------------
- ------------------------- ------------------------------------------------------
           13
                          PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

                          33.1%
- ------------------------- ------------------------------------------------------
- ------------------------- ------------------------------------------------------
           14
                          TYPE OF REPORTING PERSON

                          IN
- ------------------------- ------------------------------------------------------

                      *SEE INSTRUCTIONS BEFORE FILLING OUT!

<PAGE>

 
- ------- ------------------------------------------------------------------------
  1
        NAME OF REPORTING PERSON
        SS. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON

        Stephen A. Magida
- ------- ------------------------------------------------------------------------
- ------- ------------------------------------------------------------------------
  2
        CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*    (a)   ___
                                                             (b)    X
- -------
- ------- ------------------------------------------------------------------------
  3
        SEC USE ONLY
- ------- ------------------------------------------------------------------------
- -------
  4
        SOURCE OF FUNDS*

        00
- ------- ------------------------------------------------------------------------
- ------- ------------------------------------------------------------------------
  5
        CHECK BOX IF DICLOSURE OF LEGAL PROCEEDING IS REQUIRED PURSUANT 
        TO ITEMS 2(d) OR 2(E)                                         ____
- ------- ------------------------------------------------------------------------
- ------- ------------------------------------------------------------------------
  6
        CITIZENSHIP OR PLACE OR ORGANIZATION

        United States
- ------- ------------------------------------------------------------------------
                          -------- ---------------------------------------------
                             7
    Number of Shares               SOLE VOTING POWER
      Beneficially
                                   11,000
                          -------- ---------------------------------------------
                          -------- ---------------------------------------------
        owned by             8
 each reporting person             SHARED VOTING POWER

                                   4,000,000
                          -------- ---------------------------------------------
                          -------- ---------------------------------------------
          with               9
                                   SOLE DISPOSITIVE POWER

                                   11,000
                          -------- ---------------------------------------------
                          -------- ---------------------------------------------
                            10
                                   SHARED DISPOSITIVE POWER

                                   4,000,000
- ------------------------- ------------------------------------------------------
- ------------------------- ------------------------------------------------------
           11
                          AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH
                          REPORTING PERSON

                          4,011,000
- ------------------------- ------------------------------------------------------
- ------------------------- ------------------------------------------------------
           12
                          CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) 
                          EXCLUDES CERTAIN SHARES*                    ___
- ------------------------- ------------------------------------------------------
- ------------------------- ------------------------------------------------------
           13
                          PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

                          33.2%
- ------------------------- ------------------------------------------------------
- ------------------------- ------------------------------------------------------
           14
                          TYPE OF REPORTING PERSON

                          IN
- ------------------------- ------------------------------------------------------

                      *SEE INSTRUCTIONS BEFORE FILLING OUT!



<PAGE>

 
- ------- ------------------------------------------------------------------------
  1
        NAME OF REPORTING PERSON
        SS. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON

        Charles E. Ball
- ------- ------------------------------------------------------------------------
- ------- ------------------------------------------------------------------------
  2
        CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*     (a)   ___
                                                              (b)    X
- -------
- ------- ------------------------------------------------------------------------
  3
        SEC USE ONLY
- ------- ------------------------------------------------------------------------
- -------
  4
        SOURCE OF FUNDS*

        00
- ------- ------------------------------------------------------------------------
- ------- ------------------------------------------------------------------------
  5
        CHECK BOX IF DICLOSURE OF LEGAL PROCEEDING IS REQUIRED PURSUANT 
        TO ITEMS 2(d) OR 2(E)                                    ___
- ------- ------------------------------------------------------------------------
- ------- ------------------------------------------------------------------------
  6
        CITIZENSHIP OR PLACE OR ORGANIZATION

        United States
- ------- ------------------------------------------------------------------------
                          -------- ---------------------------------------------

    Number of Shares         7     SOLE VOTING POWER
      Beneficially
                                   0
                          -------- ---------------------------------------------
                          -------- ---------------------------------------------
        owned by             8
 each reporting person             SHARED VOTING POWER

                                   See Item 5.
                          -------- ---------------------------------------------
                          -------- ---------------------------------------------
          with               9
                                   SOLE DISPOSITIVE POWER

                                   0
                          -------- ---------------------------------------------
                          -------- ---------------------------------------------
                            10
                                   SHARED DISPOSITIVE POWER

                                   See Item 5.
- ------------------------- ------------------------------------------------------
- ------------------------- ------------------------------------------------------
           11
                          AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH 
                          REPORTING PERSON

                          See Item 5
- ------------------------- ------------------------------------------------------
- ------------------------- ------------------------------------------------------
           12
                          CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) 
                          EXCLUDES CERTAIN SHARES*                    ___
- ------------------------- ------------------------------------------------------
- ------------------------- ------------------------------------------------------
           13
                          PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

                          See Item 5
- ------------------------- ------------------------------------------------------
- ------------------------- ------------------------------------------------------
           14
                          TYPE OF REPORTING PERSON

                          IN
- ------------------------- ------------------------------------------------------

                      *SEE INSTRUCTIONS BEFORE FILLING OUT!
<PAGE>
 
- ------- ------------------------------------------------------------------------
  1
        NAME OF REPORTING PERSON
        SS. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON

        John P. Kehoe
- ------- ------------------------------------------------------------------------
- ------- ------------------------------------------------------------------------
  2
        CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*      (a)    ___
                                                               (b)     X
- -------
- ------- ------------------------------------------------------------------------
  3
        SEC USE ONLY
- ------- ------------------------------------------------------------------------
- -------
  4
        SOURCE OF FUNDS*

        00
- ------- ------------------------------------------------------------------------
- ------- ------------------------------------------------------------------------
  5
        CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDING IS REQUIRED PURSUANT 
        TO ITEMS 2(d) OR 2(E)                                    ___
- ------- ------------------------------------------------------------------------
- ------- ------------------------------------------------------------------------
  6
        CITIZENSHIP OR PLACE OR ORGANIZATION

        United States
- ------- ------------------------------------------------------------------------
                          -------- ---------------------------------------------

    Number of Shares         7     SOLE VOTING POWER
      Beneficially
                                   0
                          -------- ---------------------------------------------
                          -------- ---------------------------------------------
        owned by             8
 each reporting person             SHARED VOTING POWER

                                   See Item 5.
                          -------- ---------------------------------------------
                          -------- ---------------------------------------------
          with               9
                                   SOLE DISPOSITIVE POWER


                                   0
                          -------- ---------------------------------------------
                          -------- ---------------------------------------------
                            10
                                   SHARED DISPOSITIVE POWER

                                   See Item 5.
- ------------------------- ------------------------------------------------------
- ------------------------- ------------------------------------------------------
           11
                          AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH 
                          REPORTING PERSON

                          See Item 5.
- ------------------------- ------------------------------------------------------
- ------------------------- ------------------------------------------------------
           12
                          CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) 
                          EXCLUDES CERTAIN SHARES*                    ___
- ------------------------- ------------------------------------------------------
- ------------------------- ------------------------------------------------------
           13
                          PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

                          See Item 5
- ------------------------- ------------------------------------------------------
- ------------------------- ------------------------------------------------------
           14
                          TYPE OF REPORTING PERSON

                          IN
- ------------------------- ------------------------------------------------------

                      *SEE INSTRUCTIONS BEFORE FILLING OUT!

<PAGE>


Item 1.           Security and Issuer.

                  This  statement on Schedule 13D  ("Statement")  relates to the
common  stock,  par value  $.01 per  share  (the  "Common  Stock"),  of  Galileo
Corporation,  a Delaware  corporation  (the "Issuer").  The principal  executive
offices of the Issuer are located at Galileo  Park,  P.O.  Box 550,  Sturbridge,
Massachusetts 01566.

Item 2.           Identity and Background.

                  (a) This Schedule 13D is filed by (1)  Andlinger  Capital XIII
LLC,  a  limited  liability  company  organized  under  the laws of the State of
Connecticut  ("Andlinger  Capital")  (2)  Gerhard R.  Andlinger,  (3) Stephen A.
Magida, (4) Charles E. Ball and (5) John P. Kehoe (collectively,  the "Reporting
Persons").

                  (b) The address of the principal  office of Andlinger  Capital
and of Mr. Magida is 105 Harbor Drive,  Stamford,  CT 06902. Mr. Andlinger's and
Mr. Ball's  principal  business  address is c/o Andlinger & Company,  Inc., 4445
North A1A, Suite #235, Vero Beach, Florida 32963. Mr. Kehoe's principal business
address is 766 Madison Avenue, New York, New York 10021.

                  (c) Mr.  Andlinger  is a private  investor  and a member and a
controlling person of Andlinger Capital and a principal,  sole stockholder and a
controlling person of Andlinger & Company, Inc., a Delaware corporation ("ACO").
Mr.  Magida is an attorney and principal and secretary of ACO and the manager of
Andlinger  Capital.  Mr.  Ball is a  principal  of ACO,  a member  of  Andlinger
Capital,  and an  employee  of one or  more  affiliates  of  ACO.  ACO is in the
business  of  identifying  and  assisting  in the  implementation  of  potential
acquisitions,  investments  and other  transactions on behalf of its principals.
Andlinger  Capital has been organized by the individual  Reporting  Persons with
the business purpose of investing in the Issuer.  ACO's principal address is 303
South Broadway,  Suite 229,  Tarrytown,  New York 10159.  Mr. Kehoe is a private
investor and corporate development  consultant,  and Of Counsel to Kehoe, White,
Van Negris & Company, an investor relations consulting firm.

                  (d)-(e)  During  the last five  years,  none of the  Reporting
Persons  (i) has been  convicted  in a criminal  proceeding  (excluding  traffic
violations  or  similar  misdemeanors)  or  (ii)  has  been a  party  to a civil
proceeding of a judicial or administrative body of competent jurisdiction and as
a result of such  proceeding  was or is subject to a  judgment,  decree or final
order  enjoining  future  violations of, or prohibiting or mandating  activities
subject  to,  Federal or State  securities  laws or finding any  violation  with
respect to such laws.
                                                                                
                   (f) Mr.  Andlinger,  Mr. Magida,  Mr. Ball, and Mr. Kehoe are
citizens of the United States.

Item 3.           Source and Amount of Funds or Other Consideration.

                  The  Issuer  and   Andlinger   Capital  have  entered  into  a
Securities  Purchase  Agreement,  dated as of December 22, 1998,  (the "Purchase
Agreement"), and certain related agreements. The Purchase Agreement, among other
things,  provides  for the  purchase by  Andlinger  Capital,  subject to certain
conditions,  of  2,000,000  shares of  Common  Stock and  warrants  to  purchase
2,000,000  shares of Common Stock  (subject to  anti-dilution  adjustment) at an
exercise price of $1.50 per share,  exercisable at any time prior to 7-1/2 years
after their date of issuance (the "Warrants"),  for the aggregate  consideration
of  $6,000,000  (the  "Purchase  Price").  A copy of the  Purchase  Agreement is
attached  hereto as an exhibit and is incorporated  by reference  herein.  It is
anticipated that prior to closing each member of Andlinger  Capital will make an
initial cash contribution to Andlinger Capital in an amount proportionate to his
interest  in  Andlinger   Capital  and  that  the  amount  and  source  of  such
contributions  will be, (1) in the case of Mr.  Andlinger,  $5,550,000  from his
personal funds, (2) in the case of Mr. Magida, $75,000 from a loan to be made by
Mr.  Andlinger  from his personal  funds prior to the closing under the Purchase
Agreement at an interest  rate of 10% per annum,  (3) in the case of Mr.  Kehoe,
$75,000 from a loan to be made by Mr. Andlinger from his personal funds prior to
the closing  under the Purchase  Agreement at an interest rate of 10% per annum;
and  (4) in the  case  of Mr.  Ball,  $300,000  from a loan  to be  made  by Mr.
Andlinger  from his  personal  funds  prior to the  closing  under the  Purchase
Agreement at an interest rate of 10% per annum.

Item 4.           Purpose of Transaction.

                  The Reporting Persons have entered into the Purchase Agreement
and  certain  related  agreements  and  intend to acquire  the Common  Stock and
Warrants for investment  purposes.  The Purchase Agreement,  among other things,
provides for the purchase by Andlinger Capital,  subject to certain  conditions,
of 2,000,000  shares of Common Stock and the Warrants at a closing to be held on
the  first  business  day  following  satisfaction  of the  parties'  respective
conditions  to closing  specified in the  Purchase  Agreement.  Such  conditions
include,  among other things,  receipt of a waiver from The Nasdaq Stock Market,
Inc. as to any  requirement  for a vote of the  stockholders of the Issuer under
Nasdaq  Rule  4310(c)(25),  an  increase  in the size of the  Issuer's  Board of
Directors  from  five to seven  members,  the  election  of three  designees  of
Andlinger Capital to the Board of Directors of the Issuer,  the amendment of the
Issuer's  Bylaws to accomplish  the increased size of the Board of Directors and
to provide for supermajority  voting requirements with respect to certain future
actions  by the  Board  of  Directors,  so long  as  Andlinger  Capital  and its
permitted  transferees  under the  Purchase  Agreement  beneficially  own in the
aggregate not less than 98% of their Initial Common  Holdings (as defined in the
Purchase  Agreement),  and obtaining  certain  amendments  and waivers under the
Issuer's  principal  credit  facilities.  There  can be no  assurance  that  the
conditions to closing specified in the Purchase Agreement will be satisfied. The
Purchase  Agreement  provides  that either party may terminate the Agreement and
abandon the transaction,  in the event, among other things, the closing does not
occur by 5:00 p.m. Eastern Time on January 31, 1999, unless the failure to close
was the result of the terminating party's failure to fulfill such condition.

                  The Purchase  Agreement provides that on or before the Closing
Date,  the Issuer shall take such action as is necessary to, among other things,
increase  the size of its  Board  of  Directors  from  five  directors  to seven
directors  and cause three  designees of Andlinger  Capital to be elected to the
newly created vacancies on its Board of Directors.  The Purchase  Agreement also
provides that, subject to certain exceptions,  after the Closing Date and for so
long as Andlinger  Capital and its  affiliates  continue to own in the aggregate
not less than 50% of their Initial Common Holdings,  the Issuer and its Board of
Directors  will support the  nomination  of and shall take certain  actions such
that the slate of nominees recommended by the Board of Directors to stockholders
for  election as directors at each annual  meeting of  stockholders  includes at
least the number of designees of Andlinger  Capital equal to one less than would
constitute a majority of directors  following such election,  and that Andlinger
Capital  shall be entitled to have at least one of its  designees  appointed  to
each Committee of the Board of Directors.  As defined in the Purchase Agreement,
"Initial Common  Holdings" means the aggregate of the number of shares of Common
Stock purchased by Andlinger Capital under the Purchase Agreement and the number
of shares of  Common  Stock  issuable  under  the  Warrant  (as if issued on the
Closing Date).  Andlinger Capital  presently  contemplates that it would propose
Mr. Andlinger,  Mr. Magida and Mr. Ball as its initial designees to serve on the
Board  of  Directors   of  Issuer,   but  reserves  the  right  to  modify  such
designation(s) in its discretion.

                  The Purchase  Agreement  provides  that the Issuer and certain
other related persons or representatives may not, subject to certain exceptions,
solicit any inquiries or make any proposals  that may  reasonably be expected to
lead to a merger or other  business  combination  involving the Issuer or any of
its subsidiaries,  or any acquisition of any equity interests in the Issuer, its
outstanding  voting securities or any of its assets or those of its subsidiaries
(as  defined in the  Purchase  Agreement,  a  "Sale").  The  Purchase  Agreement
provides, however, that as a result of the exercise by the Board of Directors of
its fiduciary  obligations  under applicable law (as determined in good faith by
the Board of Directors and based on the advice of outside  counsel),  the Issuer
may upon  receipt  by the Issuer of an  unsolicited  offer to effect a Sale that
would  constitute a Superior  Proposal  (as defined in the Purchase  Agreement),
following  delivery  to  Investor  of  the  notice  specified  in  the  Purchase
Agreement,  participate in negotiations regarding such proposed Sale and furnish
information with respect to the Company pursuant to a customary  confidentiality
agreement. As defined in the Purchase Agreement, a "Superior Proposal" means any
bona fide  proposal  for the  acquisition,  whether by the sale or  issuance  of
securities or pursuant to an agreement of merger or consolidation,  of more than
50% of the outstanding  voting  securities of the Issuer (as determined prior to
giving effect to such proposed transaction), or the acquisition of more than 50%
of the  consolidated  assets of the Issuer as measured by book value,  in either
case on  terms  which  the  Board of  Directors  determines  in its  good  faith
reasonable  judgment (and based on the written advice of a financial  advisor of
nationally  recognized   reputation)  to  be  more  favorable  to  the  Issuer's
stockholders than the transactions contemplated by the Purchase Agreement.

                  The  Purchase  Agreement  further  provides  that the Board of
Directors  of the Issuer may not  withdraw  or modify or propose to  withdraw or
modify, in a manner adverse to Andlinger Capital,  its approval or authorization
of the transactions  contemplated under the Purchase Agreement,  may not approve
or  recommend  or propose to  approve  or  recommend  any Sale or enter into any
agreement relating to such Sale, except in certain circumstances relating to the
exercise of its fiduciary  obligations and only if certain other  conditions are
met,  including  the payment to Andlinger  Capital of a  termination  fee in the
amount of $600,000 and reimbursement of certain of Andlinger  Capital's expenses
subject to certain limitations.

                  In addition,  the Purchase  Agreement provides that the Issuer
shall pay Andlinger  Capital a termination  fee in the amount of $600,000 in the
event the Purchase  Agreement is terminated  under certain other  circumstances,
including  certain  circumstances  relating  to  the  occurrence  of a  Superior
Proposal.

                  The  Purchase  Agreement  has been filed as an exhibit to this
Schedule 13D and is hereby  incorporated by reference.  All  descriptions of the
Purchase  Agreement set forth in this Item 4 are qualified in their  entirety by
reference  to the text of the  Purchase  Agreement  which  has been  filed as an
exhibit to this Schedule 13D.

                  The  Reporting  Persons  do not have any  plans or  proposals,
other than those  described in this Item 4 and Item 5 of this report on Schedule
13D,  which  relate to or would  result in any of the  actions  or  transactions
specified in clauses (a) through (j) of Item 4 of Schedule  13D.  The  Reporting
Persons may from time to time discuss  among  themselves  and with other persons
market  conditions  and other factors  concerning  their  interests in Andlinger
Capital and its investment in the Issuer, as well as specific actions that might
be taken in light of prevailing  circumstances  with respect to such  interests.
The Reporting  Persons reserve the right from time to time to acquire or dispose
of the  shares  of the  Common  Stock or the  Warrants,  or to  formulate  other
purposes,  plans or  proposals  regarding  the Issuer or the Common Stock or the
Warrants held by the Reporting  Persons to the extent deemed  advisable in light
of general investment policies, market conditions and other factors.

Item 5.           Interest in Securities of the Issuer.

                  (a)-(b) Based on information  received from the Issuer,  there
are issued and  outstanding  8,071,250  shares of Common Stock.  Pursuant to the
Purchase  Agreement,  Andlinger  Capital  may  acquire and would have the shared
power to vote or direct the vote of,  and shared  power to dispose or direct the
disposition  of, an aggregate of 4,000,000  newly issued  shares of Common Stock
(of which 2,000,00 are attributable to the Warrants) representing  approximately
33.1% of the  issued  and  outstanding  shares of  Common  Stock  (including  as
outstanding for purposes of determining  such percentage  shares of Common Stock
issuable to Andlinger Capital under the Purchase  Agreement and shares of Common
Stock issuable upon exercise of the Warrants).

                  Mr.  Andlinger,  as a member and majority holder of the voting
units of Andlinger  Capital,  beneficially  owns and has shared power to vote or
direct the vote of, and shared power to dispose of or direct the disposition of,
an aggregate of 4,000,000  shares of Common Stock (of which 2,000,000 shares are
attributable to the Warrants)  representing  33.1% of the issued and outstanding
shares of Common Stock  (including as  outstanding  for purposes of  determining
such percentage  shares of Common Stock issuable to Andlinger  Capital under the
Purchase  Agreement  and shares of Common Stock  issuable  upon  exercise of the
Warrants).

                  Mr. Magida,  as manager of Andlinger  Capital has shared power
to vote or direct  the vote of,  and  shared  power to  dispose of or direct the
disposition  of an  aggregate  of  4,000,000  shares of  Common  Stock (of which
2,000,000 shares are  attributable to the Warrants and which,  together with the
11,000  shares  held by Mr.  Magida as trustee of the trust  referred  to in the
immediately following paragraph),  represent 33.2% of the issued and outstanding
shares of Common Stock  (including as  outstanding  for purposes of  determining
such percentage  shares of Common Stock issuable to Andlinger  Capital under the
Purchase  Agreement  and shares of Common Stock  issuable  upon  exercise of the
Warrants).

                  Mr. Magida, as trustee under certain trusts for the benefit of
members of Mr.  Andlinger's  family,  purchased 11,000 shares of Common Stock of
the Issuer on December  28, 1998 at a price of $3.875 per share.  Such  purchase
was  effected  on the open  market  and was made out of the funds of each of the
respective trusts. Mr. Magida, as trustee of such trusts, has sole power to vote
or direct the vote of,  and sole  power to dispose of or direct the  disposition
of, such 11,000 shares of Common Stock. Mr. Magida, as trustee of one or more of
such trusts, may make additional  purchases of Common Stock. Mr. Andlinger,  Mr.
Ball and Mr. Kehoe and Andlinger Capital each disclaim  beneficial  ownership of
such shares.
          
                  Mr.  Ball  by  virtue  of  his  relationship  with  the  other
Reporting  Persons  and as a member of  Andlinger  Capital may be deemed to have
shared  power to vote or direct the vote of,  and shared  power to dispose of or
direct the disposition of, an aggregate of 4,000,000  shares of Common Stock (of
which 2,000,000 shares are attributable to the Warrants)  representing  33.1% of
the issued and outstanding  shares of Common Stock (including as outstanding for
purposes of  determining  such  percentage  shares of Common  Stock  issuable to
Andlinger  Capital  under the  Purchase  Agreement  and  shares of Common  Stock
issuable upon exercise of the Warrants). Mr. Ball disclaims beneficial ownership
of such shares.

                  Mr.  Kehoe  by  virtue  of his  relationship  with  the  other
Reporting  Persons  and as a member of  Andlinger  Capital may be deemed to have
shared  power to vote or direct the vote of,  and shared  power to dispose of or
direct the disposition of, an aggregate of 4,000,000  shares of Common Stock (of
which 2,000,000 shares are attributable to the Warrants)  representing  33.1% of
the issued and outstanding  shares of Common Stock (including as outstanding for
purposes of  determining  such  percentage  shares of Common  Stock  issuable to
Andlinger  Capital  under the  Purchase  Agreement  and  shares of Common  Stock
issuable  upon  exercise  of  the  Warrants).  Mr.  Kehoe  disclaims  beneficial
ownership of such shares.

                  (c) Other than the transactions described in Item 4 and Item 5
of this  Schedule  13D,  the  Reporting  Persons have not acquired any shares of
Common Stock during the past 60 days.

                  (d)      Not applicable.

                  (e)      Not applicable.

Item 6. Contracts, Arrangements, Understandings or Relationships with Respect to
        the Securities of the Issuer.

                  The  responses  set forth in Item 4 and 5 of this Schedule 13D
are  incorporated  herein.  Andlinger  Capital  has  entered  into the  Purchase
Agreement, a copy of which has been filed as an exhibit to this Schedule 13D and
is hereby incorporated by reference.  In connection with the Purchase Agreement,
the Issuer,  Andlinger  Capital,  John F. Blais, Jr. ("Blais") and W. Kip Speyer
("Speyer")  have  entered  into a  Registration  Rights  Agreement  dated  as of
December 22, 1998 (the "Registration Rights Agreement"). The Registration Rights
Agreement  provides  for the  registration  with  the  Securities  and  Exchange
Commission  of the  shares  of Common  Stock,  and the  shares  of Common  Stock
issuable upon the exercise of the Warrants  owned by Andlinger  Capital,  Blais,
Speyer and certain stockholders of the Issuer.  Furthermore,  in connection with
the Purchase  Agreement,  the Issuer,  Andlinger Capital,  Blais and Speyer have
entered  into a  Stockholders'  Agreement  dated as of  December  22,  1998 (the
"Stockholders' Agreement"), a copy of which has been filed as an exhibit to this
Schedule  13D,  and  is  hereby  incorporated  by  reference.  Pursuant  to  the
Stockholders' Agreement,  Andlinger Capital, Blais and Speyer have agreed, among
other things,  not to transfer their respective shares of Common Stock,  without
the prior written consent of the other  stockholders  party thereto,  except (1)
pursuant  to a bona  fide  underwritten  public  offering  registered  under the
Securities Act, (2) pursuant to "piggyback" or "demand"  registrations under the
Registration Rights Agreement, (3) to certain transferees, (4) with respect to a
specified number of shares during each fiscal  quarter,(5)  pursuant to a tender
offer,  and (6) pursuant to a transaction  duly approved by the  stockholders of
the Issuer.

                  The  Andlinger  Capital  Operating  Agreement,   dated  as  of
December 14, 1998,  (the  "Operating  Agreement")  provides  that the manager of
Andlinger  Capital shall have complete  discretion to exercise any voting rights
with respect to any  securities  of  Andlinger  Capital and to sell or otherwise
dispose of such  securities  and to  exercise  any rights  with  respect to such
securities.  The Operating  Agreement  further  provides that upon notice to the
manager of Andlinger Capital,  the members of Andlinger Capital by majority vote
(based on the number of voting units) may direct the manager as to the manner in
which  such  securities  may be voted  upon or  disposed  of.  Accordingly,  Mr.
Andlinger,  so long as he continues to beneficially own a majority of the voting
units in Andlinger  Capital,  has the power to direct the voting or  disposition
of, and exercise  other rights with respect to, such  securities.  The Operating
Agreement  has been  filed as an  exhibit  to this  Schedule  13D and is  hereby
incorporated by reference.

                  In addition,  although,  other than as set forth above,  there
are no formal contracts,  understandings or arrangements among Mr. Andlinger and
the persons  named in Item 2 to this  Schedule 13D with respect to the voting or
disposition  of the  Common  Stock and  Warrants,  by virtue of Mr.  Andlinger's
position as a control person of ACO and certain of its affiliates, Mr. Andlinger
may be deemed to have relationships  among such persons,  the power to influence
such  persons with respect to their  interests  in  Andlinger  Capital,  or with
respect to the manner in which the Common  Stock and the  Warrants  may be voted
upon or disposed of.

                  References  and  descriptions  to  the   Registration   Rights
Agreement, the Stockholders' Agreement, and the Operating Agreement as set forth
above in this Item 6 of this Schedule  13D, are  qualified in their  entirety by
reference to the copies of the Registration Rights Agreement,  the Stockholders'
Agreement and the Operating Agreement,  respectively,  filed as exhibits to this
Schedule 13D.

                  Except  as   described   above,   there   are  no   contracts,
arrangements,  understandings  or  relationships  (legal or otherwise) among the
persons  named in Item 2 or  between  such  persons  and any other  person  with
respect to any securities of Issuer,  including but not limited to,  transfer or
voting of any such  securities,  finder's fees,  joint ventures,  loan or option
arrangements, puts or calls, guarantees of profits, division of profits or loss,
or the giving or withholding of proxies.

<PAGE>




Item 7.           Material to be Filed as Exhibits.

         Exhibit I --     Securities Purchase Agreement between Galileo 
                          Corporation and Andlinger Capital XIII LLC, dated as 
                          of December 22, 1998, together with the form of the 
                          Warrants, the Registration Rights Agreement, the
                          Stockholders' Agreement, and the Opinion of Counsel 
                          to the Issuer.

         Exhibit II --    Registration Rights Agreement, dated as of 
                          December  22, 1998 among Galileo Corporation, 
                          Andlinger Capital XIII LLC, John F. Blais, Jr.
                          and W. Kip Speyer.

         Exhibit III --   Stockholders' Agreement, dated as of December 22, 
                          1998 among Galileo Corporation, Andlinger Capital 
                          XIII LLC, John F. Blais, Jr. and W. Kip Speyer.

         Exhibit IV --    Andlinger Capital XIII LLC Operating Agreement, 
                          dated as of December 14, 1998.

         Exhibit V --     Joint Filing Agreement, dated as of December 28,
                          1998, among the Reporting Persons 


<PAGE>


                                    SIGNATURE

                  After reasonable  inquiry and to the best knowledge and belief
of the Reporting Persons, the Reporting Persons certify that the information set
forth in this statement is true, complete and correct.

                                      ANDLINGER CAPITAL XIII LLC


Dated:  December 28, 1998             By: /s/ Stephen A. Magida
                                          ---------------------
                                               Name: Stephen A. Magida
                                               Title: Manager


                                      By: /s/ Gerhard R. Andlinger
                                          ------------------------
                                               Name: Gerhard R. Andlinger


                                      By: /s/ Stephen A. Magida
                                          ---------------------
                                               Name:  Stephen A. Magida


                                      By: /s/ Charles E. Ball
                                          -------------------
                                               Name: Charles E. Ball


                                      By: /s/ John P. Kehoe
                                          -----------------
                                               Name: John P. Kehoe




                                                            Execution Copy

                          SECURITIES PURCHASE AGREEMENT


                                 by and between

                           ANDLINGER CAPITAL XIII LLC

                                       and

                               GALILEO CORPORATION

                          Dated as of December 22, 1998



<PAGE>

                                TABLE OF CONTENTS
                                                                           Page


ARTICLE I SALE AND PURCHASE OF SECURITIES......................................1

                  1.1 Sale and Purchase of Securities..........................1
                  1.2 Closing..................................................2

ARTICLE II REPRESENTATIONS AND WARRANTIES OF THE COMPANY.......................2

                  2.1 Organization and Qualification...........................2
                  2.2 Capitalization...........................................3
                  2.3 Authorization and Validity...............................4
                  2.4 Issuance of Shares.......................................4
                  2.5 Absence of Certain Changes...............................4
                  2.6 Reports..................................................5
                  2.7 Consents and Approvals; No Violation.....................6
                  2.8 Brokerage Fees and Commissions...........................6
                  2.9 Litigation...............................................6
                  2.10 Absence of Changes in Benefit Plans.....................6
                  2.11 ERISA Compliance........................................7
                  2.12 Taxes...................................................8
                  2.13 No Excess Parachute Payments; Termination Payments; 
                         Section 162(m) of the Code.............. .............9
                  2.14 Compliance with Applicable Laws.........................9
                  2.15 Contracts; Debt Instruments............................11
                  2.16 Labor Matters..........................................12
                  2.17 Title to Properties....................................12
                  2.18 Insurance Policies.....................................12
                  2.19 Patents, Trademarks, Trade Names, Etc..................13
                  2.20 Antitakeover Statute...................................13
                  2.21 No Required Vote of Company Stockholders...............13
                  2.22 Disclosure.............................................13
                  2.23 Acknowledgment Regarding Investors' Purchase of 
                         Securities...........................................13
                  2.24 No Integrated Offering.................................14
                  2.25 Fairness Opinion.......................................14
                  2.26 Nasdaq Listing.........................................14
                  2.27 Year 2000..............................................14

ARTICLE III REPRESENTATIONS AND WARRANTIES OF THE INVESTOR....................14

                  3.1 Authorization and Validity..............................14
                  3.3 Consents and Approvals; No Violation....................15
                  3.3 Private Placement.......................................15
                  3.4 Investment Intent.......................................15

ARTICLE IV COVENANTS..........................................................16

                  4.1 Conduct of Business of the Company......................16
                  4.2 No Solicitation.........................................17
                  4.3 Access to Information...................................19
                  4.4 Nasdaq Listing..........................................19
                  4.5 Board of Directors Matters..............................19
                  4.6 Reasonable Best Efforts.................................20
                  4.7 Public Announcements....................................20
                  4.8 Stockholder Litigation..................................20
                  4.9 Stock Options...........................................21
                  4.10 Certain Approval Rights................................21
                  4.11 No Integration.........................................21

ARTICLE V CONDITIONS TO CONSUMMATION OF THE INVESTMENT TRANSACTION............22

                  5.1 Conditions to Investors' Obligations for the Initial 
                        Closing...............................................22
                  5.2 Conditions to the Company's Obligations for the
                        Closing...............................................24

ARTICLE VI TERMINATION; AMENDMENT; INDEMNITY..................................25

                  6.1 Termination.............................................25
                  6.2 Effect of Termination...................................26
                  6.3 Termination Fee and Expense Fee.........................26
                  6.4 Amendment...............................................27
                  6.5 Company's Obligation to Indemnify.......................27
                  6.6 Investor's Obligation to Indemnify......................27
                  6.7 Indemnity Procedures for Third Party Claims.............27
                  6.8 Indemnity Procedures for Claims by the Parties..........28
                  6.9 Effect of Insurance and Tax Benefits....................29
                  6.10 Limitations on Indemnification; Exclusive Remedy.......29

ARTICLE VII MISCELLANEOUS.....................................................30

                  7.1 Extension; Waiver.......................................30
                  7.2 Entire Agreement; Assignment............................30
                  7.3 Enforcement of the Agreement............................30
                  7.4 Validity................................................30
                  7.5 Notices.................................................30
                  7.6 Governing Law...........................................31
                  7.7 Descriptive Headings....................................32
                  7.8 Parties in Interest.....................................32
                  7.9 Counterparts............................................32
                  7.10 Expenses...............................................32
                  7.11 Certain Definitions....................................32

<PAGE>

                                    EXHIBITS

Exhibit A         Form of Warrants for Common Stock
Exhibit B         Form of Registration Rights Agreement
Exhibit C         Form of Stockholders' Agreement
Exhibit D         Form of Opinion of Counsel to the Company



<PAGE>


                                  DEFINED TERMS

1981 Plan......................................................................3
1991 Plan......................................................................3
Affiliate.....................................................................32
Agreement......................................................................1
Ancillary Agreements...........................................................4
Asserted Liability............................................................27
Bank Boston...................................................................23
Beneficial owner..............................................................32
Benefit Plans..................................................................7
Board of Directors.............................................................4
Claim Response................................................................28
Claims Notice.................................................................27
Closing........................................................................2
Closing Date...................................................................2
Code...........................................................................7
Common Stock...................................................................1
Company........................................................................1
Company Indemnified Party.....................................................27
Control.......................................................................32
Conversion Shares..............................................................1
D&O Policy....................................................................20
DGCL..........................................................................13
Directors Plan.................................................................3
Environmental Claim...........................................................11
Environmental Laws............................................................10
Environmental Liabilities.....................................................11
Environmental Permit...........................................................9
ERISA..........................................................................7
ERISA Affiliate................................................................7
Exchange Act...................................................................2
Expense Fee...................................................................26
Fully diluted.................................................................32
Galileo Corporation Disclosure Schedules.......................................2
Governmental Entity............................................................6
Hazardous Material............................................................10
Indebtedness..................................................................11
Indemnified Party.............................................................27
Indemnifying Party............................................................27
Initial Common Holdings.......................................................19
Intellectual Property.........................................................13
Investment Transactions........................................................1
Investor.......................................................................1
Investor Indemnified Parties..................................................27
Lenders.......................................................................23
Liens..........................................................................2
Litigation.....................................................................6
Loan Agreements...............................................................23
Losses........................................................................27
Material Adverse Effect.......................................................32
Notice of Superior Proposal...................................................18
Permits........................................................................9
Permitted.....................................................................33
Permitted Sale................................................................16
Person........................................................................33
Purchase Price.................................................................1
Registration Rights Agreement..................................................1
Release.......................................................................10
Required......................................................................21
Response Period...............................................................28
Sale..........................................................................17
SEC............................................................................5
SEC Documents..................................................................5
Securities.....................................................................1
Securities Act.................................................................1
Shares.........................................................................1
Stock Option Plans.............................................................3
Stock Purchase Plan............................................................3
Stockholders' Agreement........................................................1
Subsidiaries...................................................................2
Superior Proposal.............................................................18
Taxes..........................................................................9
Termination Fee...............................................................26
Warrants.......................................................................1

<PAGE>
                         SECURITIES PURCHASE AGREEMENT



          THIS IS A SECURITIES PURCHASE AGREEMENT, dated as of December 22, 1998
(the  "Agreement"),  by and between  ANDLINGER  CAPITAL XIII LLC, a  Connecticut
limited  liability company  ("Investor"),  and GALILEO  CORPORATION,  a Delaware
corporation (the "Company").

          WHEREAS,  the Company  currently has issued and outstanding  8,071,250
shares of Common Stock, par value $.01 per share (the "Common Stock"), which are
currently listed on the Nasdaq National Market;

          WHEREAS,  Investor  desires  to  purchase  from the  Company,  and the
Company  desires to sell to  Investor,  (i) two  million  (2,000,000)  shares of
Common  Stock  (the   "Shares")  and  (ii)  warrants  to  purchase  two  million
(2,000,000)  shares of Common  Stock (the  "Warrants")  in the form of Exhibit A
hereto exercisable at an exercise price of $1.50 per share;

          WHEREAS,   concurrently  with  the  execution  and  delivery  of  this
Agreement,  the Company,  Investor and certain other stockholders of the Company
are entering into a registration  rights agreement  substantially in the form of
Exhibit  B  hereto  (the  "Registration  Rights  Agreement")  providing  for the
registration under the Securities Act of 1933, as amended (the "Securities Act")
of the Shares, the shares of Common Stock issuable upon exercise of the Warrants
(the "Conversion Shares") and shares of Common Stock owned by other stockholders
party to the Registration Rights Agreement;

          WHEREAS,   concurrently  with  the  execution  and  delivery  of  this
Agreement,  the Company,  Investor and certain  stockholders  of the Company are
entering into a stockholders'  agreement  substantially in the form of Exhibit C
hereto (the "Stockholders' Agreement") relating to the sale by such stockholders
of shares of Common Stock;

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

                                    ARTICLE I

                         SALE AND PURCHASE OF SECURITIES

          1.1 Sale and  Purchase  of  Securities.  (a)  Subject to the terms and
conditions  set forth  herein,  at the Closing  (as  hereinafter  defined),  the
Company will issue and sell to Investor,  and Investor will purchase, the Shares
and the  Warrants.  The Shares and the  Warrants  are  referred to  collectively
herein as the "Securities".  The purchase and sale of the Securities pursuant to
this Agreement  shall  sometimes  hereinafter be referred to as the  "Investment
Transactions".

               (b) The  aggregate  purchase  price for the  Shares to be paid by
Investor pursuant to this Agreement is six million dollars  ($6,000,000.00) (the
"Purchase  Price").  At Closing,  Investor  shall pay the Purchase Price for the
Shares by wire transfer of immediately  available funds to an account designated
by the  Company  not less  than two  business  days  prior to the  Closing.  The
Purchase  Price  shall  be  allocated  95%  as to  the  Shares  and 5% as to the
Warrants.

          1.2  Closing.  (a) The  closing of the  Investment  Transactions  (the
"Closing") will take place on the first business day after the conditions to the
Closing set forth in Sections  5.1 and 5.2 hereof  shall have been  satisfied or
waived in writing,  or on such other date as may be agreed by the parties hereto
(the "Closing Date").

               (b) At Closing,  the Company  will deliver to the Investor one or
more  certificates   evidencing  the  Shares  and  the  Warrants  registered  in
Investor's name (or the name of any nominee of Investor).

                                   ARTICLE II

                  REPRESENTATIONS AND WARRANTIES OF THE COMPANY

          Simultaneously with the execution and delivery of this Agreement,  the
Company is delivering to Investor disclosure schedules (the "Galileo Corporation
Disclosure  Schedules")setting  forth the  disclosures  contemplated  by certain
Sections of this Article II.

          The Company hereby represents and warrants to Investor as follows:

          2.1 Organization and Qualification.

               (a) The Company is a corporation duly organized, validly existing
and in good  standing  under  the  laws of the  State  of  Delaware  and has the
requisite corporate power to carry on its business as it is now being conducted.
The Company is duly qualified as a foreign corporation to do business, and is in
good standing,  in each jurisdiction where the character of its properties owned
or leased or the nature of its activities  makes such  qualification  necessary,
except  where the  failure  to be so  qualified  would not  result in a Material
Adverse Effect (as hereinafter defined).

               (b) Schedule  2.1(b) sets forth a true and complete  list of each
of the Company's subsidiaries (as such term is defined in Rule 12b-2 promulgated
under the  Securities  Exchange  Act of 1934,  as amended (the  "Exchange  Act")
(collectively,  the  "Subsidiaries").  Each  Subsidiary  is a  corporation  duly
organized,  validly  existing  and  in  good  standing  under  the  laws  of its
jurisdiction of incorporation and has the requisite  corporate power to carry on
its business as it is now being conducted.  Each Subsidiary is duly qualified as
a  foreign  corporation  to do  business,  and  is in  good  standing,  in  each
jurisdiction where the character of its properties owned or leased or the nature
of its activities makes such qualification  necessary,  except where the failure
to be so qualified would not result in a Material Adverse Effect.  Except as set
forth on Schedule 2.1(b), all of the outstanding shares of capital stock of each
Subsidiary have been validly issued,  are fully paid and  non-assessable and are
wholly-owned,  either directly or indirectly,  by the Company, free and clear of
all pledges, claims, equities, options, liens, charges, rights of first refusal,
"tag" or "drag" along rights, encumbrances and security interests of any kind or
nature whatsoever  (collectively,  "Liens"). Except for the capital stock of its
Subsidiaries or as otherwise set forth in Schedule  2.1(b),  neither the Company
nor any  Subsidiary  owns,  directly or  indirectly,  any capital stock or other
ownership  interest  in any  corporation,  partnership,  joint  venture or other
entity.

               (c) The Company has  delivered  to Investor  complete and correct
copies of its Restated  Certificate of Incorporation and Bylaws, in each case as
currently in effect.

          2.2 Capitalization.

               (a) The  authorized  capital  stock of the  Company  consists  of
36,000,000  shares of Common Stock and no other shares of capital  stock.  As of
the  date  hereof,   (i)  8,071,250  shares  of  Common  Stock  are  issued  and
outstanding;  (ii) options to purchase an aggregate of 757,400  shares of Common
Stock are  outstanding  under the  Company's  1981 Stock  Option Plan (the "1981
Plan"), 1991 Stock Option Plan (the "1991 Plan") and 1996 Directors Stock Option
Plan (the "Directors  Plan") and, together with the 1981 Plan and 1991 Plan, the
"Stock Option Plans"),  757,400 shares of Common Stock are reserved for issuance
upon the exercise of  outstanding  options under the Stock Option Plans,  55,114
shares of Common Stock are reserved for issuance  under the Company's 1997 Stock
Purchase Plan (the "Stock Purchase Plan"),  and there are no stock  appreciation
rights or  limited  stock  appreciation  rights  outstanding  other  than  those
attached  to options  under the Stock  Option  Plans;  (iii) no shares of Common
Stock are held by the  Company  in its  treasury;  and (iv) no shares of capital
stock of the Company are held by the Company's Subsidiaries.  The Company has no
outstanding bonds, debentures,  notes or other obligations entitling the holders
thereof to vote (or which are  convertible  into or  exercisable  for securities
having the right to vote) with or separate from the  stockholders of the Company
on any matter.  Except as set forth on Schedule 2.2,  since  September 30, 1998,
the Company  (i) has not issued any shares of Common  Stock other than under the
Stock  Purchase  Plan or upon the  exercise  of options  issued  under the Stock
Option Plans, (ii) has granted options to purchase an aggregate of 79,000 shares
of Common Stock under the Stock  Option Plans and (iii) has not split,  combined
or reclassified  any of its shares of capital stock.  All issued and outstanding
shares  of  Common  Stock  are duly  authorized,  validly  issued,  fully  paid,
nonassessable  and free of  preemptive  rights.  There  are no other  shares  of
capital  stock of the  Company,  no  securities  of the Company  convertible  or
exchangeable  for shares of capital  stock or voting  securities of the Company,
and no existing options, warrants, calls, subscriptions, convertible securities,
or other rights,  agreements or commitments which obligate the Company or any of
its  Subsidiaries to issue,  transfer or sell any shares of capital stock of, or
equity  interests  in,  the  Company  or any of its  Subsidiaries.  There are no
outstanding obligations of the Company or any Subsidiaries to repurchase, redeem
or otherwise acquire any shares of capital stock of the Company and there are no
performance  awards  outstanding  under  the  Stock  Option  Plans or any  other
outstanding  stock related  awards.  Other than under the Stock Purchase Plan or
upon the  exercise of options  issued under the Stock  Option  Plans,  after the
Closing,  neither the Company nor any  Subsidiary  will have any  obligation  to
issue,  transfer  or sell any  shares of  capital  stock of the  Company  or any
Subsidiary pursuant to any Benefit Plan (as defined). There are no voting trusts
or other  agreements  or  understandings  to  which  the  Company  or any of its
Subsidiaries  is a party with  respect  to the  voting of  capital  stock of the
Company or any of its Subsidiaries.

               (b) Except as may exist pursuant to this Agreement, any Ancillary
Agreement  (as  defined)  or as set  forth on  Schedule  2.2,  there are not any
outstanding  contractual  obligations  of  the  Company  or  any  Subsidiary  to
repurchase, redeem or otherwise acquire, or providing preemptive or registration
rights with respect to, any shares of capital stock of the Company or any of its
Subsidiaries.   There  are  no  anti-dilution  or  price  adjustment  provisions
contained in any security  issued by the Company (or in any agreement  providing
rights to  security  holders)  that will be  triggered  by the  issuance  of the
Securities or the Conversion  Shares.  The Company and the  Subsidiaries  do not
have outstanding any loans to any Person (as defined) in respect of the purchase
of securities issued by the Company and the Subsidiaries.

          2.3  Authorization  and  Validity.   The  Company  has  the  requisite
corporate  power and  authority  to execute and deliver this  Agreement  and all
agreements and documents contemplated hereby or executed in connection herewith,
including  without   limitation  the  Registration   Rights  Agreement  and  the
Stockholders'  Agreement  (the  "Ancillary  Agreements")  and to consummate  the
transactions contemplated hereby and thereby. The execution and delivery of this
Agreement and the Ancillary  Agreements by the Company and the  consummation  by
the Company of the  transactions  contemplated  hereby and  thereby  (including,
without  limitation,  the issuance of the Securities and the  reservation of the
Conversion  Shares)  have  been  duly and  validly  authorized  by the  Board of
Directors  of the Company  (the "Board of  Directors"),  and no other  corporate
proceedings on the part of the Company are necessary to authorize this Agreement
and the  Ancillary  Agreements or to consummate  the  transactions  contemplated
hereby and thereby.  This Agreement has been, and any Ancillary Agreement at the
time of execution will have been, duly and validly executed and delivered by the
Company,  and  (assuming  this  Agreement  and such  Ancillary  Agreements  each
constitutes  a valid and binding  obligation of Investor)  constitutes  and will
constitute  the valid and binding  obligations  of the Company,  enforceable  in
accordance  with  their  respective  terms,  subject to  applicable  bankruptcy,
insolvency,  moratorium or other similar laws relating to creditors'  rights and
general principles of equity.

          2.4 Issuance of Shares.  The Shares,  upon issuance in accordance with
the terms of this Agreement, will be duly authorized, validly issued, fully paid
and non-assessable, and free from all taxes, liens, claims and encumbrances with
respect to the issue  thereof and shall not be subject to  preemptive  rights or
other similar rights of stockholders of the Company and will not impose personal
liability  upon  the  holder  thereof.   Upon  completion  of  the  transactions
contemplated  hereby, the Conversion Shares will be duly authorized and reserved
for issuance,  and,  upon exercise of the Warrants in accordance  with the terms
thereof,  will be validly issued,  fully paid and non-assessable,  and free from
all taxes,  liens, claims and encumbrances and will not be subject to preemptive
rights or other  similar  rights or  stockholders  of the  Company  and will not
impose personal liability upon the holder thereof.

          2.5  Absence  of  Certain  Changes.  Except  as  disclosed  in the SEC
Documents  (as  defined) or in a separate  writing from the Company to Investor,
since September 30, 1998, the Company and its Subsidiaries  have conducted their
business  only in the  ordinary  course of such  business  consistent  with past
practices,  and there has not been (a) any Material  Adverse Effect  suffered by
the Company or any of its  Subsidiaries;  (b) any declaration,  setting aside or
payment of any dividend or other distribution in respect of the capital stock of
the Company or any repurchase, redemption or other acquisition by the Company of
any shares of Common Stock or other equity  securities  of the Company;  (c) any
entry into any agreement, commitment or transaction by the Company or any of its
Subsidiaries  which is material to the Company and its  subsidiaries  taken as a
whole,  whether  or not in the  ordinary  course  of  business;  (d) any  split,
combination or  reclassification  of the Company's capital stock 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 its capital stock;  (e)(i) any granting
by the Company or any of its  Subsidiaries to any director,  officer or employee
of the  Company or any of its  Subsidiaries  of any  increase  in  compensation,
except in the ordinary  course of business  consistent with prior practice or as
was required  under  employment  agreements in effect as of the date of the most
recent audited  financial  statements  included in the SEC  Documents,  (ii) any
granting by the Company or any of its Subsidiaries to any officer or employee of
any increase in  severance  or  termination  pay,  except as was required  under
employment,  severance or termination agreements in effect as of the date of the
most recent audited financial statements included in the SEC Documents, or (iii)
any  entry  by the  Company  or any of its  Subsidiaries  into  any  employment,
severance or termination agreement with any officer or employee; (f) any damage,
destruction or loss, whether or not covered by insurance,  that could reasonably
be  expected  to have a Material  Adverse  Effect;  (g) any  material  change in
accounting  methods,  principles  or  practices  by  the  Company;  or  (h)  any
revaluation  by the  Company  or any of its  Subsidiaries  of  their  respective
assets, including without limitation,  write-downs of inventory or write-offs of
accounts  receivable  other than in the ordinary  course of business  consistent
with past practices.

          2.6 Reports.  (a) Since  September 30, 1995, the Company has filed all
required  forms,   reports  and  documents  with  the  Securities  and  Exchange
Commission  (the  "SEC")  required  to be filed by it  pursuant  to the  federal
securities   laws  and  the  rules  and   regulations   promulgated   thereunder
(collectively,  the "SEC  Documents"),  all of which have  complied  as of their
respective   filing  dates  in  all  material   respects  with  all   applicable
requirements  of the  Securities  Act and the  Exchange  Act,  and the rules and
regulations promulgated thereunder.  None of such forms, reports or documents at
the time filed  contained any untrue  statement 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,  provided,  that, if any such form, report or document has
been amended by a later-filed SEC Document filed and publicly available prior to
the date hereof,  then the  representation  contained in this sentence shall not
apply to such form, report or document,  but shall apply to such later-filed SEC
Document at the time filed.  Except to the extent that information  contained in
any SEC Document has been revised or superseded  by a later-filed  SEC Document,
none of the SEC  Documents  contains any untrue  statement of a material fact or
omits to state any 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. The financial statements of the Company included
in the SEC Documents comply as to form in all material  respects with applicable
accounting  requirements and the published rules and regulations of the SEC with
respect  thereto,  have been  prepared in  accordance  with  generally  accepted
accounting principles (except, in the case of unaudited statements, as permitted
by Form 10-Q of the SEC)  applied  on a  consistent  basis  during  the  periods
involved  (except as may be indicated in the notes  thereto) and fairly  present
the  consolidated  financial  position of the Company and its Subsidiaries as of
the dates  thereof and the  consolidated  results of their  operations  and cash
flows for the periods then ended (subject,  in the case of unaudited statements,
to normal  year-end audit  adjustments),  provided,  that, if any such financial
statements  have been restated in a later-filed  SEC Document filed and publicly
available prior to the date hereof,  then the  representation  contained in this
sentence shall not apply to such financial  statements,  but shall apply to such
restated  financial  statements  in such  later-filed  SEC  Document at the time
filed.  All SEC Documents filed with the SEC by the Company on or after December
12, 1997 are listed on Schedule 2.6(a).

               (b) Except  for the  absence of notes,  the  unaudited  financial
statements  of the Company as, at and for the fiscal  year ended  September  30,
1998,  previously  provided  to  Investor,  comply  as to form  in all  material
respects with applicable  accounting  requirements and the rules and regulations
of the SEC, have been prepared in accordance with generally accepted  accounting
principles  applied on a consistent basis during the periods involved and fairly
present the consolidated  financial position of the Company and its consolidated
subsidiaries  as of the  date  thereof  and the  consolidated  results  of their
operations  and cash flows for the periods  then ended,  subject in each case to
audit  adjustments  which shall not be material in amount except as set forth in
Schedule  2.6(b).  Except as set forth in Schedule 2.6,  neither the Company nor
any of its  Subsidiaries  has any  liabilities  or  obligations,  contingent  or
otherwise, that would result in a Material Adverse Effect.

          2.7 Consents and  Approvals;  No Violation.  Neither the execution and
delivery of this Agreement or any of the Ancillary Agreements by the Company nor
the consummation of the transactions  contemplated  hereby or thereby (including
the  issuance  of  the  Securities  and,  upon  exercise  of the  Warrants,  the
Conversion  Shares) will result in any  violation of or default (with or without
notice or lapse of time, or both) under, or give rise to a right of termination,
cancellation or acceleration of any obligation or to loss of a material  benefit
under,  or result in the  creation  of any Lien  upon any of the  properties  or
assets  or the  Company  or any of its  Subsidiaries  under,  (a)  the  Restated
Certificate of Incorporation, or Bylaws of the Company or the comparable charter
or organizational  documents of any of its Subsidiaries,  (b) any loan or credit
agreement,   note,  bond,  mortgage,   indenture,   lease  or  other  agreement,
instrument,  permit, concession,  franchise or license applicable to the Company
or any of its  Subsidiaries  or their  respective  properties  or  assets or (c)
subject  to the  governmental  filings  and  other  matters  referred  to in the
following sentence, any judgment,  order, decree, statute, law, ordinance,  rule
or  regulation  applicable  to the Company or any of its  Subsidiaries  or their
respective  properties or assets, other than, in the case of clauses (b) or (c),
any such conflicts,  violations, defaults, rights or Liens that would not have a
Material Adverse Effect.  No consent,  approval,  order or authorization  of, or
registration, declaration or filing with, any Federal, state or local government
or any  court,  administrative  or  regulatory  agency  or  commission  or other
governmental  authority,  entity or  agency,  domestic  or  foreign  (including,
without limitation,  the SEC and Nasdaq) (a "Governmental  Entity"), is required
by the Company or any of its  Subsidiaries  in connection with the execution and
delivery of this  Agreement or the  Ancillary  Agreements  by the Company or the
consummation by the Company of the transactions  contemplated hereby or thereby,
except for (i) the waiver by the Nasdaq Stock  Market,  Inc. of any  requirement
for a vote of the  stockholders in connection  with the Investment  Transactions
and (ii) such other consents, approvals, orders, authorizations,  registrations,
declarations  and  filings the failure of which to be obtained or made would not
have a Material Adverse Effect.

          2.8 Brokerage Fees and  Commissions.  No person is entitled to receive
from the  Company or its  Subsidiaries  any  investment  banking,  brokerage  or
finder's fee in connection with this Agreement or the transactions  contemplated
hereby,  except for Needham & Company,  Inc.  and Oliver,  Lipman &  Associates,
whose fees will be paid by the Company.

          2.9 Litigation.  Except as set forth in Schedule 2.9, (i) there are no
claims,  actions,  suits,  proceedings,  arbitrations,  investigations or audits
(collectively,  "Litigation") by a third party other than a Governmental  Entity
pending or, to the knowledge of the Company,  threatened  against the Company or
any of its Subsidiaries,  at law or in equity,  other than those in the ordinary
course of business which would not result in a Material Adverse Effect, and (ii)
there is no Litigation by a Governmental  Entity pending or, to the knowledge of
the Company,  threatened against the Company or any of its Subsidiaries,  at law
or at equity;  nor does the Company or its  Subsidiaries  have  knowledge of any
facts or  circumstances  that it believes  would be likely to form the basis for
any Litigation  described in the preceding  clauses (i) and (ii).  Except as set
forth in Schedule  2.9, no  Governmental  Entity has  indicated  an intention to
conduct any audit,  investigation or other review with respect to the Company or
any  of  its  Subsidiaries.  Schedule  2.9  contains  a  complete  and  accurate
description of all existing  Litigation,  including  whether such  Litigation is
covered by insurance and the deductible, if any, applicable to such claim.

          2.10 Absence of Changes in Benefit  Plans.  Except as disclosed in the
SEC  Documents,  since  September  30, 1998,  there has not been any adoption or
amendment by the Company or any of its Subsidiaries of any collective bargaining
agreement  or  any  bonus,  pension,  profit  sharing,   deferred  compensation,
incentive compensation,  stock ownership,  stock purchase, stock option, phantom
stock,   retirement,    vacation,   severance,    disability,   death   benefit,
hospitalization, medical or other plan, arrangement or understanding (whether or
not legally  binding)  providing  benefits  to any  current or former  employee,
officer or director of the Company or any of its  Subsidiaries  or for which the
Company or any of its  Subsidiaries  is liable which would  materially  increase
costs under such plan,  arrangement or understanding or, as to any plan intended
to be  qualified  under  section  401(a)  of the  Code (as  hereafter  defined),
adversely affect such plan's qualified  status.  Except as disclosed on Schedule
2.10 and in the SEC Documents, there exist no employment, consulting, severance,
termination  or  indemnification  agreements,   arrangements  or  understandings
between the Company or any of its Subsidiaries, on the one hand, and any officer
or employee,  including  any current or former  officer or director of either of
the Company or any of its  Subsidiaries,  or for which the Company or any of its
Subsidiaries is liable.

          2.11 ERISA Compliance. (a) Schedule 2.11(a) sets forth a complete list
of all  "employee  benefit  plans" (as defined in Section  3(3) of the  Employee
Retirement  Income  Security  Act of 1974,  as  amended  ("ERISA")),  employment
contracts,  bonus, pension,  profit sharing,  deferred  compensation,  incentive
compensation,  excess benefit, stock, stock option, severance,  termination pay,
change in control or other  employee  benefit plans,  programs or  arrangements,
including,  but  not  limited  to,  those  providing  medical,  dental,  vision,
disability,  life insurance and vacation  benefits (other than those required to
be maintained by law),  whether written or unwritten,  qualified or unqualified,
funded or unfunded, foreign or domestic currently maintained, or contributed to,
or  required to be  maintained  or  contributed  to, by the Company or any other
person or  entity  that,  together  with the  Company,  is  treated  as a single
employer under Section 414 of the Internal Revenue Code of 1986, as amended (the
"Code")  (each an "ERISA  Affiliate")  for the  benefit of any current or former
employees,  officers or directors of the Company or any of its  Subsidiaries  or
with respect to which the Company or any of its  Subsidiaries  has any liability
(collectively,  the  "Benefit  Plans").  No  Benefit  Plan is a union  sponsored
benefit plan or "multiemployer plan" (as defined in Section 3(37) of ERISA), and
neither the Company nor any ERISA  Affiliate has at any time  contributed  to or
been required to contribute to any  multiemployer  plan. The Company will,  make
available to Investor at its request true,  complete and correct  copies of each
Benefit Plan and related trust agreement and annuity contract and (to the extent
applicable) a copy of each Benefit Plan's current summary plan  description.  In
addition,  to the extent applicable,  the Company will provide to Investor where
reasonably  requested  by Investor a copy of the most  recent IRS  determination
letter  issued to each  Benefit Plan and a copy of the most  recently  filed IRS
Form 5500  together  with all  schedules,  actuarial  reports  and  accountants'
statements for each Benefit Plan.

               (b)  Each  Benefit  Plan has been  administered  in all  material
respects in accordance with its terms. The Company, each ERISA Affiliate and all
the  Benefit  Plans are all in  compliance  in all  material  respects  with the
applicable provisions of ERISA and the Code.

               (c) Except as set forth on Schedule  2.11(c),  all Benefit  Plans
intended  to be  qualified  under  Section  401(a)  of the  Code  have  received
determination  letters from the Internal Revenue Service to the effect that such
Benefit Plans are  qualified and exempt from Federal  income taxes under Section
401(a) and 501(a),  respectively,  of the Code and no such determination  letter
has been revoked  nor, to the  knowledge of the  Company,  has  revocation  been
threatened,  nor has any such Benefit  Plan been  amended  since the date of its
most recent  determination  letter or  application  therefor in any respect that
would adversely affect its qualification or materially increase its costs.

               (d) No Benefit Plan had, as of it most recent  valuation date, an
"unfunded benefit liability" (as such term is defined in Section  4001(a)(18) of
ERISA) and neither the Company nor any of its Subsidiaries is aware of any facts
or  circumstances  that could  adversely  change  the funded  status of any such
Benefit Plans.

               (e) None of the Company, any ERISA Affiliate,  any officer of the
Company  or any of its  Subsidiaries  or any of the  Benefit  Plans,  any trusts
created  thereunder or any trustee or  administrator  thereof,  has engaged in a
non-exempt  "prohibited  transaction" (as such term is defined in Section 406 of
ERISA  or  Section   4975  of  the  Code)  or  any  other  breach  of  fiduciary
responsibility  that could  subject  the  Company,  any ERISA  Affiliate  or any
officer of the Company or any of its  Subsidiaries or Investor to tax or penalty
under ERISA, the Code or other applicable law. Neither any of such Benefit Plans
nor any of such trusts has been terminated during the last five years.

               (f) With respect to any Benefit Plan that is an employee  welfare
benefit plan (as defined in Section 3(1) of ERISA),  (i) no such Benefit Plan is
funded  through a  "welfare  benefit  fund," as such term is  defined in Section
419(e) of the Code,  (ii) each such Benefit Plan that is a "group  health plan,"
as such term is defined  in  Section  5000(b)(l)  of the Code,  complies  in all
material  respects with the applicable  requirements of Section  4980B(f) of the
Code,  (iii)  no  such  Benefit  Plan  provides   benefits,   including  without
limitation,  death or medical  benefits,  beyond  termination  of  employment or
retirement  other than (A) coverage  mandated by law or (B) death or  retirement
benefits  under a Benefit Plan  qualified  under Section 401(a) of the Code, and
(iv) each such Benefit Plan (including any such Plan covering  retirees or other
former  employees)  may be amended or  terminated  at any time without  material
liability to the Company or any of its Subsidiaries.

               (g) Except as set forth on Schedule 2.11(g),  neither the Company
nor any ERISA  Affiliate  has, at any time, (i) maintained or contributed to any
employee  pension  benefit plan subject to Title IV of ERISA or Code Section 412
or (ii) been required to  contribute  to, or incurred any  withdrawal  liability
within the meaning of ERISA Section 4201,  including  any  contingent  liability
within the meaning of ERISA Section 4201, to any  multiemployer  plan as defined
in ERISA Section 3(37).

               (h) Except as set forth on Schedule 2.11(h), there are no pending
investigations  by any  Governmental  Entity  involving  the Benefit  Plans,  no
termination  proceedings  involving  the Benefit  Plans,  and no  threatened  or
pending claims (except for claims for benefits  payable in the normal  operation
of the  Benefit  Plans),  suits  or  proceedings  against  any  Benefit  Plan or
asserting  any rights or claims to benefits  under any Benefit  Plan which could
give rise to any material  liability,  nor, to the best of the  Company's or any
affiliate's knowledge, are there any facts which could give rise to any material
liability in the event of any such investigation, claim, suit or proceeding.

          2.12 Taxes. Except as set forth on Schedule 2.12,

               (a) The  Company  and each of its  Subsidiaries  have  filed  all
Federal  income tax  returns  and all other  material  tax  returns  and reports
required  to be filed by it. All such  returns are  complete  and correct in all
material  respects.  The Company and each of its Subsidiaries  have paid (or the
Company  has paid on their  behalf) all taxes due for the periods for which such
returns were filed and all material taxes for which no return was required to be
filed, and the most recent financial  statements  contained in the SEC Documents
reflect  an  adequate  reserve  for all taxes  payable  by the  Company  and its
Subsidiaries  for all taxable  periods and portions  thereof through the date of
such financial statements.

               (b) No material  deficiencies  for any taxes have been  proposed,
asserted or assessed  against  the  Company or any of its  Subsidiaries,  and no
requests  for  waivers  of the time to assess any such  taxes are  pending.  The
Federal  income  tax  returns  of the  Company  and  each  of  its  Subsidiaries
consolidated in such returns have been examined by and settled with the Internal
Revenue Service for all years through 1993.

               (c) As used in this Agreement, "Taxes" shall include all Federal,
state,  local and  foreign  income,  property,  sales,  excise and other  taxes,
tariffs or  governmental  charges of any nature  whatsoever  including,  without
limitation, interest, penalties and additions to tax with respect thereto.

               (d) The Company is not a "real property  holding  corporation" as
defined in the Code.

          2.13 No  Excess  Parachute  Payments;  Termination  Payments;  Section
162(m) of the Code.  Any  amount  that  could be  received  (whether  in cash or
property or the vesting of  property)  by any  employee,  officer or director of
either  of the  Company  or  any  of  their  affiliates  who is a  "disqualified
individual" (as is defined in proposed  Treasury  Regulation  Section  1.280G-1)
under any employment,  severance or termination  agreement,  other  compensation
arrangement or Benefit Plan would not be characterized  as an "excess  parachute
payment"  (as is  defined  in  Section  280G(b)(1)  of the  Code).  There are no
payments that the Company or any of its  Subsidiaries is or would be required to
make to any of the Company's or any Subsidiary's  current or former employees or
to any third party which payment is  contingent  upon a change of control of the
Company or any of its  Subsidiaries  or payable as a result of the  transactions
contemplated  by this Agreement.  The  disallowance of a deduction under Section
162(m) of the Code for employee  remuneration  will not apply to any amount paid
or  payable  by the  Company or any of its  Subsidiaries  under any  commitment,
program, arrangement or understanding.

          2.14  Compliance  with  Applicable  Laws.  (a)  The  Company  and  its
Subsidiaries have in effect all Federal,  state, local and foreign  governmental
approvals, authorizations, certificates, filings, franchises, licenses, notices,
permits  and  rights  ("Permits"),  including  without  limitation  any  Permits
required by the U.S.  Food and Drug  Administration,  necessary for them to own,
lease or operate their  properties  and assets and to carry on their business as
now conducted,  and there has occurred no default under any such Permit,  except
for the lack of Permits and for defaults  under  Permits  which would not have a
Material Adverse Effect.  Except as disclosed in the SEC Documents,  each of the
Company and its  Subsidiaries  is in compliance  with all  applicable  statutes,
laws,  ordinances,  rules,  orders and regulations of any  Governmental  Entity,
except where the failure to be in compliance  would not have a Material  Adverse
Effect.  The Company and its  Subsidiaries  have  obtained  and  maintained  all
Environmental  Permits  required  with respect to their  respective  properties,
assets,  businesses  and  operations,  except  where  the  failure  to obtain or
maintain an Environmental  Permit would not have a Material Adverse Effect.  The
term  "Environmental  Permit"  means  any  permit,  license,  approval  or other
authorization required under any Environmental Law (as defined below).

               (b) Each of the Company and its Subsidiaries and their respective
properties,  assets, businesses and operations is, and has been, and each of the
Company's  former  subsidiaries,  while  subsidiaries  of the  Company and their
respective  properties,  assets,  businesses and operations,  was, in compliance
with all applicable  Environmental  Laws and Environmental  Permits,  except for
possible  noncompliance which would not have a Material Adverse Effect. The term
"Environmental  Laws"  means any  applicable  Federal,  state,  local or foreign
statute, code, ordinance, rule, regulation,  policy, guideline, permit, consent,
approval,   license,   judgment,   order,  writ,  decree,  injunction  or  other
authorization,  including the requirement to register underground storage tanks,
relating  to: (i)  pollution or  protection  of health or the  environment,  the
Release or threatened  Release of Hazardous  Material (as  hereinafter  defined)
into the environment,  including,  without  limitation,  into ambient air, soil,
sediments, land surface or subsurface,  buildings or facilities,  surface water,
groundwater, publicly-owned treatment works, septic systems or land; or (ii) the
generation,   treatment,   storage,  disposal,  use,  handling,   manufacturing,
transportation or shipment of Hazardous Material.

               (c) During the period of  ownership  or  operation by the Company
and its  subsidiaries  of any of their  respective  current or  previously-owned
properties,  there have been no Releases of Hazardous  Material in, on, under or
affecting such properties or any surrounding site, except in each case for those
which are not reasonably likely to have a Material Adverse Effect.  Prior to the
period  of  ownership  by the  Company  and  its  subsidiaries  of any of  their
respective  current or  previously-owned  properties  there were no  releases of
Hazardous  Material  in,  on,  under  or  affecting  any  such  property  or any
surrounding  site, except in each case for those which would not have a Material
Adverse Effect. The term "Release" means any release as defined in 42 U.S.C. ss.
9601(22) but  excluding the  exceptions  in ss.  9601(22)(A) - (D), and the term
"Hazardous Material" means (i) hazardous materials,  pollutants or contaminants,
medical, hazardous or infectious wastes, hazardous waste constituents, hazardous
chemicals,  hazardous or toxic pollutants,  and hazardous or toxic substances as
those terms are defined in or regulated by  Environmental  Laws,  including  the
following statutes and their implementing  regulations:  the Hazardous Materials
Transportation Act, 49 U.S.C. ss.ss. 1801 et seq., the Resource Conservation and
Recovery Act, 42 U.S.C.  ss.ss.  6901 et seq., the  Comprehensive  Environmental
Response, Compensation and Liability Act, as amended by the Superfund Amendments
and  Reauthorization  Act, 42 U.S.C.  ss.ss.  9601 et seq., the Toxic Substances
Control  Act,  15 U.S.C.  ss.ss.  2601 et seq.,  the Clean  Water Act, 33 U.S.C.
ss.ss.  1251 et seq. and the Clean Air Act, 42 U.S.C.  ss.ss. 7401 et seq., (ii)
petroleum,  including  crude oil and any fractions  thereof,  (iii) natural gas,
synthetic gas and any mixtures thereof,  (iv) radioactive  materials  including,
without  limitation,  source  byproduct  or special  nuclear  materials  and (v)
pesticides.

               (d) Except as disclosed on Schedule 2.14(d),  (i) the Company and
its  Subsidiaries  and  their  respective  properties,  assets,  businesses  and
operations have not received notice of, and to the best knowledge of the Company
and its  Subsidiaries  are not  subject  to any  material  Environmental  Claims
(direct or contingent,  and whether known or unknown) or material  Environmental
Liabilities  arising from or based upon any act, omission,  event,  condition or
circumstance  occurring  or existing on or prior to the date  hereof,  including
without limitation,  any such Environmental Claims or Environmental  Liabilities
arising from or based upon the  ownership or operation of assets,  businesses or
properties of the Company or any  Subsidiary or their  respective  predecessors,
and (ii) neither the Company nor any of its Subsidiaries has received any notice
of  any  violation  of any  Environmental  Law or  Environmental  Permit  or any
Environmental  Claim in connection  with their  respective  assets,  properties,
businesses  or  operations,   or,  in  each  case,  those  of  their  respective
predecessors,  which  could have a Material  Adverse  Effect.  The  Company  has
disclosed on Schedule  2.14(d) all  material  environmental  assessment  reports
prepared by or for the Company's consultants since January 1, 1993 regarding the
environmental   condition  of  the  Company's  properties  or  relating  to  its
activities.  The term  "Environmental  Claim"  means any third party  (including
governmental  agencies,  regulatory  agencies and  employees)  action,  lawsuit,
claim, proceeding (including claims or proceedings under the Occupational Safety
and Health Act or similar laws relating to safety of  employees)  which seeks to
impose  liability for (i) noise;  (ii)  pollution or  contamination  of the air,
surface  water,  ground  water or land;  (iii)  solid,  gaseous or liquid  waste
generation,  handling,  treatment,  storage,  disposal or  transportation;  (iv)
exposure to Hazardous Material;  (v) the safety or health of employees;  or (vi)
the  manufacture,  processing,  distribution  in  commerce,  use,  or storage of
chemical or other Hazardous Material. An "Environmental Claim" includes,  but is
not limited,  to, a common law action, as well as a proceeding to issue,  modify
or terminate an Environmental  Permit of the Company or any of its Subsidiaries,
or to adopt or amend a regulation to the extent that such a proceeding  attempts
to redress  violations of such an Environmental  Permit as alleged by a Federal,
state or local executive,  legislative,  judicial,  regulatory or administrative
agency, board or authority.  The term "Environmental  Liabilities"  includes all
costs arising from any Environmental  Claim or violation or alleged violation or
circumstance  or  condition  which would give rise to a violation  or  liability
under  any  Environmental  Permit  or  Environmental  Law  under  any  theory of
recovery, at law or in equity, and whether based on negligence, strict liability
or  otherwise,  including  but not  limited  to:  remedial,  removal,  response,
abatement,  investigative,  monitoring,  personal injury and damage to property,
and any other  related  costs,  expenses,  losses,  damages,  penalties,  fines,
liabilities  and  obligations,  including  reasonable  attorney's fees and court
costs.

          2.15  Contracts;  Debt  Instruments.  (a) All contracts and agreements
binding on the  Company  or any of its  Subsidiaries  or any of their  assets or
properties  that is or was required to be filed with any SEC Document  have been
so filed.  Except as set forth on Schedule 2.15,  neither the Company nor any of
its  Subsidiaries  is in violation of or in default  under (nor does there exist
any event or  condition  which upon the passage of time or the giving of notice,
or both,  would cause such a violation  of or default  under) any loan or credit
agreement,  note,  bond,  mortgage,  indenture,  lease,  or any other  contract,
agreement,  arrangement or understanding,  to which it is a party or by which it
or any of its  properties or assets is bound,  except for violations or defaults
that would not have a Material  Adverse  Effect.  Neither the Company nor any of
its  Subsidiaries  is a party to, or bound by, any  contract or  agreement  that
materially  limits the  ability of the  Company  directly  or through any of its
Subsidiaries  to  compete  in any line of  business  or with any  person  in any
geographic  area  during  any  period of time.  The  Company is not aware of any
indemnification,  breach of contract or similar claims by or against the Company
or any of its  Subsidiaries  which are pending or threatened  (or which could be
reasonably expected to be made in the future) with respect to the acquisition of
any business by the Company.

               (b) Set forth on Schedule 2.15(b) of this Agreement is (i) a list
of all loan or credit agreements, notes, bonds, mortgages,  indentures and other
agreements and instruments  pursuant to which any indebtedness of the Company or
any of its  Subsidiaries in an aggregate  principal amount in excess of $100,000
is  outstanding  or may be incurred and (ii) the  respective  principal  amounts
currently   outstanding   thereunder.   For  purposes  of  this  Section   2.15,
"indebtedness" shall mean, with respect to any Person, without duplication,  (i)
all  obligations of such person for borrowed  money, or with respect to deposits
or  advances of any kind to such  person,  (ii) all  obligations  of such person
evidenced  by  bonds,  debentures,  notes  or  similar  instruments,  (iii)  all
obligations of such person upon which  interest  charges are  customarily  paid,
(iv) all  obligations  of such  person  under  conditional  sale or other  title
retention  agreements  relating to property  purchased by such  person,  (v) all
obligations  of such person issued or assumed as the deferred  purchase price of
property or services (excluding  obligations of such person to creditors for raw
materials,  inventory,  services and supplies incurred in the ordinary course of
such person's business),  (vi) all capitalized lease obligations of such person,
(vii) all  obligations of others secured by any Lien on property or assets owned
or acquired by such person,  whether or not the obligations secured thereby have
been  assumed,  (viii) all  obligations  of such person under  interest  rate or
currency hedging  transactions  (valued at the termination value thereof),  (ix)
all letters of credit issued for the account of such person  (excluding  letters
of credit  issued for the benefit of  suppliers to support  accounts  payable to
suppliers  incurred in the ordinary  course of business) and (x) all  guarantees
and arrangements having the economic effect of a guarantee of such Person of any
indebtedness of any other person.

          2.16  Labor  Matters.  Except  as set  forth on  Schedule  2.16 and as
disclosed  in the  SEC  Documents,  no  employee  of the  Company  or any of its
Subsidiaries is represented by any union or other labor  organization.  There is
no labor strike, dispute, material slowdown, representation campaign or material
work stoppage  pending or, to the  Company's  knowledge,  threatened  against or
affecting  the Company or any of its  Subsidiaries,  and neither the Company nor
any of its  Subsidiaries  has  experienced  any  material  work  stoppage  since
September 30, 1997.

          2.17 Title to Properties.  (a) The Company and its  Subsidiaries  have
good, valid and marketable title to, or valid leasehold  interests in, all their
material  properties  and assets except for such as are no longer used or useful
in the conduct of its  businesses  or as have been  disposed of in the  ordinary
course of  business  and except for  defects  in title,  easements,  restrictive
covenants and similar encumbrances or impediments that, in the aggregate, do not
and will not  materially  interfere  with its ability to conduct its business as
currently conducted.  Except as set forth in Schedule 2.17(a), all such material
properties and assets,  other than properties and assets in which the Company or
any of its  Subsidiaries  has  leasehold  interests,  are free and  clear of all
Liens,  except for Liens that, in the aggregate,  do not and will not materially
interfere  with the  ability  of the  Company  and its  Subsidiaries  to conduct
business as currently conducted.

               (b) Each of the Company and its  Subsidiaries has complied in all
material  respects with the terms of all material real property  leases to which
it is a party and under  which it is in  occupancy,  and all such  leases are in
full force and effect.  The Company and each of its Subsidiaries  enjoy peaceful
and undisturbed possession under all such material real property leases.

          2.18  Insurance  Policies.  The Company  and each of its  Subsidiaries
maintain in force insurance  policies and bonds in such amounts and against such
liabilities  and hazards as are consistent  with industry  practice.  A complete
list of all material insurance  policies,  including  deductibles  applicable to
such policies, is set forth in Schedule 2.18. Neither the Company nor any of its
Subsidiaries is now liable,  nor, to the Company's  knowledge,  will any of them
become  liable,  for any  retroactive  premium  adjustment  not reflected in the
September  Balance  Sheet.  All policies are valid and  enforceable  and in full
force and effect,  all premiums owing in respect  thereof have been timely paid,
and neither the Company nor any of its  Subsidiaries  has received any notice of
premium increase or cancellation  with respect to any of its insurance  policies
or bonds.  There are no  claims  pending  as to which  the  insurer  has  denied
liability  or is  reserving  its  rights,  and all claims  have been  timely and
properly filed. Within the last three years,  neither the Company nor any of its
Subsidiaries has been refused any insurance  coverage sought or applied for, and
the  Company has no reason to believe  that their  existing  insurance  coverage
cannot be renewed as and when the same shall expire,  upon terms and  conditions
standard in the market at the time renewal is sought.

          2.19  Patents,  Trademarks,  Trade  Names,  Etc.  The  Company and its
Subsidiaries  own,  or are  licensed  or  otherwise  have the right to use,  all
patents, trademarks, trade names, copyrights, technology, know-how and processes
(collectively,  "Intellectual  Property")  except  where the lack of  ownership,
license  or  right  to  use  would  not  have a  Material  Adverse  Effect.  The
consummation of the  transactions  contemplated by this Agreement will not alter
or impair any Intellectual  Property rights of the Company.  Except as set forth
on Schedule  2.19,  no claims have been asserted by, and to the knowledge of the
Company no claims are pending or have been  threatened by, any Person to the use
of any Intellectual Property owned or used by the Company or its Subsidiaries or
challenging  or  questioning  the  validity or  effectiveness  of any license or
agreement  relating  thereto to which the Company or its Subsidiaries is a party
and which would have a Material Adverse Effect.  Except as disclosed on Schedule
2.19, to the knowledge of the Company no Person  infringes or has infringed upon
or  acts  or  has  acted  adversely  to any  rights  of  the  Company  in and to
Intellectual Property owned or used by the Company.

          2.20 Antitakeover Statute. From and after the date hereof, (i) Section
203 of the Delaware General Corporation Law (the "DGCL") will be inapplicable to
this Agreement and the Ancillary  Agreements and the  transactions  contemplated
hereby and thereby, and (ii) any other takeover law in effect on the date hereof
which,  if  applicable,  could affect the ability of Investor to consummate  the
transactions  contemplated  hereby  or  have,  either  individually  or  in  the
aggregate,  a Material  Adverse Effect or a material adverse effect on Investor,
shall be  inapplicable  to this  Agreement and the Ancillary  Agreements and the
transactions contemplated hereby and thereby.

          2.21 No Required Vote of Company Stockholders.  If the waiver from The
Nasdaq Stock Market Inc.  contemplated in Article V is obtained,  no vote of the
stockholders of the Company is required by any law, the Restated  Certificate of
Incorporation or By-Laws of the Company or pursuant to the rules and regulations
of any  Governmental  Entity to approve the  transactions  contemplated  by this
Agreement or the Ancillary Agreements.

          2.22  Disclosure.  This  Agreement and the Schedules  furnished by the
Company or any of its  Subsidiaries  pursuant  hereto,  taken as a whole, do not
contain any untrue statement of a material fact or omit to state a material fact
required  to be stated  therein  or  necessary  in order to make the  statements
contained herein, in the light of the circumstances  under which they were made,
not  misleading.  The Company does not know of any information or fact which has
or  would  have a  Material  Adverse  Effect  which  has not been  disclosed  to
Investor.

          2.23 Acknowledgment  Regarding Investors' Purchase of Securities.  The
Company  acknowledges  and agrees that Investor is acting solely in the capacity
of an arm's length  purchaser  with  respect to this  Agreement,  the  Ancillary
Agreements and the  transactions  contemplated  hereby and thereby.  The Company
further  acknowledges  that Investor is not acting as a financial advisor of the
Company  (or in any  similar  capacity)  with  respect  to this  Agreement,  the
Ancillary  Agreements and the transactions  contemplated  hereby and thereby and
any  statement  made by Investor  or any of its  respective  representatives  or
agents in  connection  with this  Agreement,  the Ancillary  Agreements  and the
transactions  contemplated  hereby and thereby is not advice or a recommendation
and is merely incidental to the Investor's purchase of securities hereunder. The
Company further represents to Investor that the Company's decision to enter into
this  Agreement  has been  based  solely on the  independent  evaluation  by the
Company and its representatives.

          2.24 No  Integrated  Offering.  Neither  the  Company,  nor any of its
affiliates,  nor any  person  acting on its or their  behalf,  has  directly  or
indirectly  made any offers or sales in any security or solicited  any offers to
buy any security under  circumstances that would require  registration under the
Securities Act of the issuance of the Securities or any of the Conversion Shares
to  Investor.  The  issuance  of the  Securities  and the  Conversion  Shares to
Investor  will  not be  integrated  with any  other  issuance  of the  Company's
securities  (past,  current or future) for purposes of any stockholder  approval
provisions applicable to the Company or its securities.

          2.25 Fairness Opinion.  The Company has provided to Investor a copy of
the  opinion of Needham & Company,  Inc. as to the  fairness  of the  Investment
Transactions  to the Company,  which  opinion has been executed and delivered to
the Board of  Directors  of the  Company  at or prior to the  authorization  and
approval by such board of the Investment Transactions.

          2.26 Nasdaq Listing.  None of (i) the entry into this Agreement or any
Ancillary  Agreement or (ii) provided the waiver  contemplated by Section 5.1(k)
is obtained,  the consummation of the Investment  Transactions,  will violate or
conflict with any rule or regulation of Nasdaq or adversely affect the continued
listing of the Common Stock or the Shares on the Nasdaq National Market.

          2.27 Year 2000.  All  computer  software  used by the  Company and its
Subsidiaries  in the  conduct  of their  businesses  is  capable  of  accurately
processing,  calculating,  manipulating,  and storing, and exchanging with other
software so capable,  date/time  data from,  into and between the  twentieth and
twenty-first centuries,  including,  without limitation, the years 1999 and 2000
and any leap year calculations, except as provided on Schedule 2.27 or where the
failure of such  software  to so perform  will not result in a Material  Adverse
Effect.

                                   ARTICLE III

                 REPRESENTATIONS AND WARRANTIES OF THE INVESTOR

          The Investor represents and warrants to the Company as follows:

          3.1  Authorization  and  Validity.  Investor is a duly  organized  and
validly  existing limited  liability  company in good standing under the laws of
the  State of  Connecticut.  Investor  has the  requisite  corporate  power  and
corporate authority to execute and deliver this Agreement and all agreements and
documents  contemplated  hereby or executed in  connection  herewith,  including
without limitation the Ancillary Agreements,  and to consummate the transactions
contemplated  hereby and thereby.  The execution and delivery of this  Agreement
and the Ancillary Agreements by Investor and the consummation by Investor of the
transactions  contemplated  hereby  and  thereby  have  been  duly  and  validly
authorized  by Investor,  and no other  proceedings  on the part of Investor are
necessary  to  authorize  this  Agreement  and the  Ancillary  Agreements  or to
consummate the transactions  contemplated hereby and thereby. This Agreement has
been, and any Ancillary  Agreement at the time of execution will have been, duly
and validly executed and delivered by Investor, and (assuming this Agreement and
such Ancillary Agreements each constitutes a valid and binding obligation of the
Company)  constitutes and will  constitute the valid and binding  obligations of
Investor,  enforceable  against  Investor in  accordance  with their  respective
terms, subject to applicable bankruptcy, insolvency, moratorium or other similar
laws relating to creditors' rights and general principles of equity.

          3.2 Consents and  Approvals;  No Violation.  Neither the execution and
delivery  of  this  Agreement  by such  Investor  nor  the  consummation  of the
transactions  contemplated  hereby  will result in any  violation  of or default
(with or  without  notice or lapse of time,  or both)  under,  or give rise to a
right of termination,  cancellation or acceleration of any obligation or to loss
of a material  benefit under,  or result in the creation of any Lien upon any of
the properties or assets of Investor under, (a) the organizational  documents of
Investor,  (b) any loan or credit agreement,  note, bond,  mortgage,  indenture,
lease or other agreement,  instrument, permit, concession,  franchise or license
applicable  to  Investor  or its  properties  or  assets or (c)  subject  to the
governmental  filings and other matters  referred to in the following  sentence,
any  judgment,  order,  decree,  statute,  law,  ordinance,  rule or  regulation
applicable to Investor or its  properties or assets,  other than, in the case of
clauses  (b) or (c),  any  such  violations,  defaults,  rights  or  Liens  that
individually or in the aggregate would not have a material adverse effect on the
ability of Investor to consummate the transactions contemplated hereby or by the
Ancillary  Agreements.  No  consent,  approval,  order or  authorization  of, or
registration,  declaration or filing with, any Governmental  Entity, is required
by Investor in connection  with the execution and delivery of this  Agreement or
any  of  the  Ancillary  Agreements  or the  consummation  of  the  transactions
contemplated  hereby or thereby,  except for any filing  required under Sections
13(d) and 16(a) of the Exchange Act.

          3.3 Private  Placement . Investor is  acquiring  the  Securities  in a
transaction  intended to be exempt from registration under the Securities Act by
virtue  of the  provisions  of  Section  4(2) of the  Securities  Act.  Investor
understands and acknowledges  that the Securities and any Conversion Shares must
be held indefinitely unless subsequently registered under the Securities Act and
any  applicable   state  securities  laws  or  unless  an  exemption  from  such
registration becomes or is available.  Investor, and each member of Investor, is
an  "accredited  investor"  as such term is  defined  in Rule  501(a)  under the
Securities Act.  Investor  confirms that (i) it is familiar with the business of
the Company,  (ii) it has had the  opportunity  to ask questions of officers and
directors  of the  Company  and to obtain  information  about the  business  and
financial condition of the Company as it has reasonably requested,  and (iii) it
has such knowledge and  experience in financial and business  matters that it is
capable of evaluating the merits and risks of the prospective  investment in the
Securities.  Investor acknowledges that all certificates representing Shares and
any Conversion  Shares shall bear the following  legend in addition to any other
legend required under applicable law or any Ancillary Agreement:

     THESE SECURITIES HAVE NOT BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933,
     AS AMENDED (THE "SECURITIES  ACT"), OR THE SECURITIES LAWS OF ANY STATE AND
     MAY NOT BE  TRANSFERRED  WITHOUT  REGISTRATION  UNDER THE SECURITIES ACT OR
     STATE  SECURITIES  LAWS  OR AN  OPINION  OF  COUNSEL,  SATISFACTORY  TO THE
     COMPANY, THAT SUCH REGISTRATION IS NOT REQUIRED.

          3.4 Investment  Intent.  The Securities are being,  and any Conversion
Shares will be, acquired by Investor for its own account, and not with a view to
any distribution thereof that would violate the Securities Act or the applicable
securities laws of any state. The Investor will not distribute the Securities or
any  Conversion  Shares in violation  of the  Securities  Act or the  applicable
securities laws of any state.

                                   ARTICLE IV

                                    COVENANTS

          4.1 Conduct of Business of the Company.

               (a) From the date of this  Agreement to the Closing Date,  unless
Investor has consented in writing  thereto,  the Company shall,  and shall cause
each of its Subsidiaries to, (i) conduct its operations  according to its usual,
regular and ordinary course of business consistent with past practice;  (ii) use
its best efforts to preserve intact their business  organizations  and goodwill,
maintain in effect all existing qualifications, licenses, permits, approvals and
other  authorizations,  keep  available  the  services  of  their  officers  and
employees and maintain  satisfactory  relationships  with those  persons  having
business  relationships  with  them;  (iii)  promptly  notify  Investor  of  the
existence of any breach of any  representation  or warranty  contained herein or
the  occurrence  of any event that would  cause any  representation  or warranty
contained herein no longer to be true and correct;  and (iv) promptly deliver to
Investor true and correct copies of any report, statement or schedule filed with
the SEC subsequent to the date of this Agreement,  any internal  monthly reports
prepared for or  delivered  to the Board of Directors  after the date hereof and
monthly financial  statements for the Company and its Subsidiaries for and as of
each month end subsequent to the date of this Agreement.

               (b) From and  after  the date of this  Agreement  to the  Closing
Date,  unless Investor has consented in writing thereto,  the Company shall not,
and  shall not  permit  any of its  Subsidiaries  to,  (i)  amend  its  Restated
Certificate of Incorporation or Bylaws or comparable governing  instruments,  or
propose any amendments to the foregoing,  (ii) issue,  sell or pledge any shares
of its capital  stock or other  ownership  interest  in the Company  (other than
issuances  of Common  Stock upon the  exercise of  outstanding  options  granted
pursuant to a Stock Option Plan or pursuant to the Stock  Purchase  Plan) or any
of the Subsidiaries,  or any securities convertible into or exchangeable for any
such shares or ownership interest, or any rights, warrants or options to acquire
or with  respect to any such shares of capital  stock,  ownership  interest,  or
convertible or exchangeable  securities;  or accelerate any rights to convert or
exchange or acquire any securities of the Company or any of its Subsidiaries for
any such shares or ownership interest; (iii) effect any stock split or otherwise
change its capitalization as it exists on the date hereof; (iv) grant, confer or
award any option,  warrant,  convertible  security or other right to acquire any
shares of its capital  stock or take any action to cause to be  exercisable  any
otherwise  unexercisable  option  under any  existing  stock  option  plan;  (v)
declare, set aside or pay any dividend or make any other distribution or payment
with  respect to any shares of its capital  stock or other  ownership  interests
(other  than such  payments  by a  wholly-owned  Subsidiary);  (vi)  directly or
indirectly redeem, purchase or otherwise acquire any shares of its capital stock
or capital  stock of any of its  Subsidiaries;  (vii) sell,  lease or  otherwise
dispose of any of its assets (including  capital stock of Subsidiaries),  except
for (A) sales of inventory in the ordinary course of business,  (B) dispositions
of other  assets  in an  amount  not to  exceed  $100,000  in book  value in the
aggregate  and (C) the sale by the Company to  IRE-Polus  Group of certain  real
estate   in    Sturbridge,    Massachusetts    together   with   the   Company's
telecommunications business, all substantially upon the terms and conditions set
forth in a letter  between the Company and such buyer dated December 8, 1998 and
previously  provided to Investor (any such sale or disposition  described in the
preceding  clauses  (A),  (B) and (C) a  "Permitted  Sale");  (viii)  settle  or
compromise any pending or threatened  Litigation,  other than settlements  which
involve  solely the payment of money  (without  admission of  liability)  not to
exceed $250,000 in the aggregate;  (ix) acquire by merger, purchase or any other
manner,  any  business  or entity  or  otherwise  acquire  any  assets  that are
material,  individually or in the aggregate, to the Company and its Subsidiaries
taken as a whole,  except  for  purchases  of  inventory,  supplies  or  capital
equipment in the ordinary course of business under the Company's existing credit
agreement;  (xi) assume,  guarantee or otherwise  become  liable or  responsible
(whether  directly,  contingently or otherwise) for the obligations of any other
person except wholly owned  Subsidiaries  of the Company;  (xii) make or forgive
any loans,  advances or capital  contributions  to, or investments in, any other
person;  (xiii) make any Tax  election or settle any Tax  liability,  other than
those relating to audits described in Schedule 2.12 provided such settlements in
the aggregate will not exceed reserves  reflected in the September Balance Sheet
by an amount that would have a Material  Adverse Effect;  (xiv) waive,  amend or
allow to lapse any term or  condition  of any  confidentiality  or  "standstill"
agreement  to which the  Company  is a party;  (xv)  grant any stock  related or
performance awards; (xvi) enter into any new employment,  severance,  consulting
or salary continuation  agreements with any officers,  directors or employees or
grant any  increases  in  compensation  or  benefits  to  employees  other  than
increases  in the  ordinary  course of business  in  accordance  with  regularly
scheduled  periodic  increases;  (xvii)  adopt,  amend or terminate any employee
benefit plan or  arrangement;  (xviii)  incur any fees or expenses in connection
with the  transactions  contemplated  by this  Agreement  in excess of  $350,000
(which amount shall not include any Expense Fee payable to Investor  pursuant to
Section 6.3(a));  (xix) make any material changes in the type or amount of their
insurance  coverages;  (xx)  make any new  capital  expenditures  other  than in
accordance with the Company's  existing budget and not to exceed $25,000 for any
single expenditure and $100,000 in the aggregate;  and (xxi) agree in writing or
otherwise to take any of the foregoing actions or to take any action which would
make any of the Company's representations or warranties in this Agreement untrue
or  incorrect  as if made at any time  from the  date of this  Agreement  to the
Closing Date.

          4.2 No Solicitation.

               (a) The  Company  shall  not,  nor  shall  it  permit  any of its
Subsidiaries  to, nor shall it  authorize  or permit any  officer,  director  or
employee  of  or  any   investment   banker,   attorney  or  other   advisor  or
representative  of  the  Company  or any of its  Subsidiaries  to,  directly  or
indirectly,  (i) solicit,  initiate or encourage (including by way of furnishing
non-public information), or take any other action to facilitate any inquiries or
the making of any proposal  that  constitutes  or may  reasonably be expected to
lead  to,  any  Sale  (as  hereinafter  defined)  or  (ii)  participate  in  any
discussions or negotiations  regarding,  any Sale; provided,  however, that as a
result of the exercise by the Board of Directors of fiduciary  obligations under
applicable  law (as determined in good faith by the Board of Directors and based
on the advice of outside  counsel),  the Company may upon receipt by the Company
of an  unsolicited  offer to  effect a Sale that  would  constitute  a  Superior
Proposal (as hereinafter defined),  following delivery to Investor of the notice
required pursuant to Section 4.2(d),  participate in negotiations regarding such
proposed Sale and furnish  information with respect to the Company pursuant to a
customary  confidentiality  agreement.  Without  limiting the  foregoing,  it is
understood  that any  violation of the  restrictions  set forth in the preceding
sentence  by any  officer,  director  or  employee  of the Company or any of its
Subsidiaries   or  any   investment   banker,   attorney  or  other  advisor  or
representative  of the Company or any of its  Subsidiaries,  whether or not such
person is purporting to act on behalf of the Company or any of its  Subsidiaries
or  otherwise,  shall be  deemed to be a breach  of this  Section  4.2(a) by the
Company.  For  purposes  of this  Agreement,  "Sale"  means any  merger or other
business  combination  involving the Company or any of its  Subsidiaries  or any
acquisition in any manner (including  through a joint venture with the Company),
directly or indirectly, of any equity interest in the Company or any interest in
the outstanding  voting  securities of the Company (except pursuant to the Stock
Option Plans or Stock  Purchase Plan) or any of the assets of the Company or any
of its subsidiaries, except for Permitted Sales.

               (b)  Neither the Board of  Directors  nor any  committee  thereof
shall (i)  withdraw or modify,  or propose to  withdraw  or modify,  in a manner
adverse to Investor, the approval or authorization by such Board of Directors or
any such  committee of the  transactions  contemplated  hereby,  (ii) approve or
recommend, or propose to approve or recommend,  any Sale or (iii) enter into any
agreement with respect to any Sale.  Notwithstanding the foregoing, in the event
the Board of Directors of the Company receives an unsolicited  offer or proposal
that, in the exercise of its fiduciary  obligations (as determined in good faith
by the Board of  Directors  and  based on the  advice of  outside  counsel),  it
determines to be a Superior Proposal, the Board of Directors may (subject to the
following  sentences)  withdraw or modify its approval or recommendation of this
Agreement,  approve or recommend any such Superior  Proposal,  or terminate this
Agreement  in order to enter into an  agreement  with respect to such a Superior
Proposal,  in each case at any time after the fifth  business day  following the
Investor's receipt of written notice (a "Notice of Superior  Proposal") advising
Investor  that  the  Board  of  Directors  has  received  a  Superior  Proposal,
specifying  the material  terms and  conditions  of such  Superior  Proposal and
identifying the person making such Superior  Proposal.  The Company may take any
of the  foregoing  actions  pursuant to the  preceding  sentence only if (i) the
Company is not otherwise in material breach of this Agreement,  (ii) the Company
pays to Investor the Expense Fee and the  Termination  Fee (each as  hereinafter
defined)  to  the  extent   required  by  Section  6.3(a)  and  Section  6.3(b),
respectively,  and (iii) the Board of Directors has considered in good faith any
alternative  proposal  delivered  by the  Investor  to the  Company  within  the
five-day period following Investor's receipt of the Notice of Superior Proposal.
For  purposes  of this  Agreement,  a  "Superior  Proposal"  means any bona fide
proposal for the  acquisition,  whether by the sale or issuance of securities or
pursuant to an  agreement  of merger or  consolidation,  of more than 50% of the
outstanding  voting  securities  of the Company (as  determined  prior to giving
effect to such proposed transaction), or the acquisition of more than 50% of the
consolidated  assets of the Company  measured  by book value,  in either case on
terms  which the Board of  Directors  determines  in its good  faith  reasonable
judgment (and based on the written  advice of a financial  advisor of nationally
recognized  reputation) to be more favorable to the Company's  stockholders than
the transactions contemplated hereby.

               (c) Nothing  contained  in this  Section 4.2 shall  prohibit  the
Company from at any time taking and  disclosing to its  stockholders  a position
contemplated  by Rule 14e-2(a)  promulgated  under the Exchange  Act,  provided,
however,  that neither the Company nor its Board of Directors  shall,  except as
permitted by paragraph  (b) of this  section,  propose to approve or recommend a
Sale.

               (d) In  addition to the  obligations  of the Company set forth in
paragraph  (b) above,  the Company  shall  promptly (but in any event within one
calendar  day)  advise  Investor  orally  and  in  writing  of any  request  for
information in connection with any Sale, or any inquiry with respect to or which
could lead to any Sale,  the  material  terms and  conditions  of such  request,
proposal or inquiry,  and the identity of the person making any such proposal or
inquiry. The Company will keep Investor fully informed of the status and details
of any such requests, proposal or inquiry.

          4.3 Access to Information.  Between the date of this Agreement and the
Closing Date, the Company will upon reasonable  notice (i) give Investor and its
authorized  representatives  access during regular  business hours to all of the
Company's plants, offices,  warehouses and other facilities and to all books and
records of it, (ii) permit Investor to make such inspections as they may require
(and the Company shall  cooperate with Investor in any  inspections,  including,
without limitation,  environmental due diligence),  and (iii) cause its officers
and those of its  Subsidiaries  to  furnish  Investor  with such  financial  and
operating data and other information with respect to the business and properties
of the Company and its Subsidiaries as Investor may from time to time request.

          4.4 Nasdaq  Listing.  The Company will use its reasonable best efforts
to insure that the Shares and the Conversion  Shares issuable upon conversion of
the Warrants are listed or authorized to be quoted on the Nasdaq National Market
or listed on any  national  securities  exchange on which shares of Common Stock
are then listed.

          4.5 Board of Directors Matters.

               (a) On or before the Closing  Date,  the Company  shall take such
action as is  necessary  to increase the size of its Board of Directors to seven
directors and shall cause three  designees of Investor,  who shall be designated
in writing to the Company within three business days prior to the Closing, to be
elected to the three newly  created  vacancies on the Board of  Directors,  such
elections  to be effective  as of the Closing  Date.  During such time after the
Closing as Investor and its  affiliates  shall  continue to own in the aggregate
not less than 50% of its and their  Initial  Common  Holdings,  the Company will
support the  nomination  of, and the  Company's  nominating  committee (or other
board committee  exercising a similar  function) shall recommend to the Board of
Directors, and the Board of Directors will use its good faith efforts to ensure,
that the slate of nominees recommended by the Board of Directors to stockholders
for election as directors at each annual meeting of stockholders of the Company,
commencing with the first annual meeting of stockholders  after the date of this
Agreement,  includes at least the number of designees  of Investor  equal to one
less than the number of directors that would constitute a majority of such board
following such election.  In the event any designee of Investor  hereunder shall
cease to serve as a director for any reason,  the Board of Directors  shall fill
the vacancy resulting thereby with a person designated by Investor.  Any nominee
or designee  to the Board of  Directors  of  Investor  or the  Company  shall be
reasonably  satisfactory  to the other  party,  and each party shall  afford the
other a reasonable  opportunity to review and comment upon the qualifications of
any such nominee or designee prior to recommending  such nominee or designee for
election to the Board of Directors.  During such time as Investor is entitled to
have designees on the Board of Directors, the Investor shall also be entitled to
have a designee serve on each committee of the Board of Directors, including any
special  committee,  and the  Company  agrees to cause  such  designee  to be so
appointed;  provided,  however,  that if such  designee  would not be considered
"independent"  or  "disinterested"  or the  equivalent  (i) for  purposes of any
applicable  rule of The Nasdaq Stock  Market,  Inc. or any provision of the U.S.
federal  securities laws (and the rules and regulations  thereunder) or the Code
or (ii) for  purposes of any special  committee  formed in  connection  with any
transaction or potential  transaction  involving the Company and Investor,  then
such designee shall not be required to be appointed to such  committee.  As used
above, "Initial Common Holdings" means the aggregate of the number of Shares and
the number of Conversion Shares (as if issued on the Closing Date).

               (b)  Following  the date  hereof  and prior to the  Closing,  the
Company shall use its reasonable  best efforts to cause the coverage limit under
its current  directors and officers  insurance policy covering the directors and
officers  of the  Company  immediately  following  the  Closing  and all  former
directors  and  officers  (the "D&O  Policy")  to be  increased  to at least $20
million,  with terms that are  substantially  similar to those in the  Company's
existing  policy,  but excluding  claims made under the existing policy prior to
Closing.

          4.6 Reasonable  Best Efforts.  (a) Subject to the terms and conditions
contained  herein,  the Company and Investor agree to use their  reasonable best
efforts to take, or cause to be taken,  all  appropriate  action,  and to do, or
cause to be done, all things  necessary,  proper or advisable  under  applicable
laws  and  regulations  to  consummate  and  make  effective  the   transactions
contemplated  by this  Agreement.  In case at any time  after  Closing  Date any
further  action is  necessary  or  desirable  to carry out the  purposes of this
Agreement,  the proper  officers and  directors of each party to this  Agreement
shall  take all such  necessary  action.  Such  reasonable  best  efforts  shall
include,  without  limitation,  (i) the  obtaining  of all  necessary  consents,
approvals or waivers from third parties and governmental  authorities  necessary
to the consummation of the  transactions  contemplated by this Agreement and the
Ancillary   Agreements   and  (ii)  opposing   vigorously   any   litigation  or
administrative   proceeding   relating  to  this  Agreement  and  the  Ancillary
Agreements  or the  transactions  contemplated  hereby  or  thereby,  including,
without  limitation,  promptly  appealing  any  adverse  court or agency  order.
Notwithstanding  the  foregoing  or  any  other  provisions  contained  in  this
Agreement to the contrary,  neither  Investor nor any of its affiliates shall be
under any obligation of any kind to enter into any  negotiations or to otherwise
agree  with  any  Governmental   Entity,   including  but  not  limited  to  any
governmental or regulatory  authority with  jurisdiction over the enforcement of
any applicable federal, state, local and foreign antitrust, competition or other
similar laws, or any other party to sell or otherwise  dispose of, hold separate
(through  the  establishment  of a trust  or  otherwise)  particular  assets  or
categories  of assets or  businesses  of any of the Company,  Investor or any of
Investor's affiliates.

               (b) The  Company  shall give and make all  required  notices  and
reports to the appropriate persons with respect to the Permits and Environmental
Permits  that  may  be  necessary  for  the   consummation   of  the  Investment
Transactions.

               (c) The  Company  and its Board of  Directors  shall (i) take all
action  necessary to ensure that no state takeover statute or similar statute or
regulation is or becomes applicable to this Agreement or any of the transactions
hereby and (ii) if any state takeover  statute or similar  statute or regulation
becomes  applicable to this  Agreement or any of the  transactions  contemplated
hereby,  take all action necessary to ensure that the transactions  contemplated
by this  Agreement may be  consummated  as promptly as  practicable on the terms
contemplated  by this  Agreement  and  otherwise  to minimize the effect of such
statute or regulation on the transactions contemplated by this Agreement.

          4.7 Public Announcements.  The Company and Investor shall consult with
each other  before  issuing  any press  release or  otherwise  making any public
statement  with respect to the  transactions  contemplated  hereby and shall not
issue any such press  release or make any such  public  statement  prior to such
consultation.

          4.8  Stockholder  Litigation.  Each of the  parties to this  Agreement
shall give the other the opportunity to participate in the defense or settlement
of any stockholder  litigation relating to any of the transactions  contemplated
by this  Agreement,  whether  before of after the Closing.  No settlement in any
such litigation  shall be agreed to without  Investor's  consent,  which consent
shall not be unreasonably  withheld;  and no settlement requiring a payment by a
director shall be agreed to without such director's consent.

          4.9 Stock Options.  The Company will not take any action to accelerate
the  exercisability  or vesting of any  outstanding  options to purchase  Common
Stock or modify any other terms of such options as a result of the  transactions
contemplated hereby.

          4.10  Certain  Approval  Rights.  The Company  shall not,  without the
consent  of the  Required  Directors  (as  defined  below)  at the  time of such
proposed  action,  (a) amend,  alter or repeal  any  provision  of the  Restated
Certificate of Incorporation  or Bylaws of the Company,  or file any certificate
of designation  relating to any preferred  stock;  (b) sell,  convey,  transfer,
abandon,  lease or otherwise  dispose of or encumber all or substantially all of
its  property  or  business  or effect a  material  change in the  nature of its
business; (c) sell, convey, transfer,  abandon, lease or otherwise dispose of or
encumber any of the capital stock of Leisegang  Medical,  Inc. or Optical Filter
Corporation,  or sell all or  substantially  all of the  property or business of
either  of  those   corporations,   whether  or  not  they   constitute  all  or
substantially  all of the  property or business of the  Company,  (d)  purchase,
lease or otherwise  acquire all or substantially all of the properties or assets
of any other  corporation  or entity  (whether  through the purchase of stock or
assets);   (e)  merge  or  consolidate  with  or  into  any  other  corporation,
corporations,  entity or entities; (f) voluntarily dissolve,  liquidate, or wind
up or carry out any partial  liquidation  or  dissolution  or transaction in the
nature of a partial  liquidation or dissolution;  (g) issue any shares of Common
Stock or any class or series of capital stock, or any options,  warrants, bonds,
debentures,  notes  or  other  obligations  or  securities  convertible  into or
exchangeable  for, or having  optional  rights to purchase,  Common Stock (other
than  issuances  of Common  Stock upon the  exercise of  outstanding  options or
future awards  granted  pursuant to a Stock Option Plan or pursuant to the Stock
Purchase  Plan) or adopt any new Stock Option Plan or Stock  Appreciation  Plan,
amend any Stock Option Plan or amend or reprice any award or grant thereunder or
(h) incur any indebtedness  (other than accounts payable arising in the ordinary
course of business) except as permitted, at the time of such incurrence,  by the
Company's  existing  credit  facility  as  amended  or  restated  at such  time;
provided,  however,  that the supermajority voting requirements  provided for in
this  Section  4.10  shall  terminate  on the first date that  Investor  and its
Permitted  Transferees  beneficially own in the aggregate less than 98% of their
Initial Common  Holdings.  On or before the Closing Date, the Company shall take
such action as is  necessary to cause the Bylaws of the Company to be amended so
as to permit,  pursuant to Section  141(b) of the Delaware  General  Corporation
Law, the supermajority  voting  requirements of this Section 4.10, and to ensure
that,  so long as this  Section  4.10 shall be in effect,  the  provision in the
Bylaws as so amended  relating  to such voting  requirements  may not be amended
without the affirmative  vote of the Required  Directors.  "Required  Directors"
means that number of directors of the Company's  Board of Directors equal to the
quotient   obtained  by  dividing   (x)  five  times  the  number  of  directors
constituting all directors at the time of such  determination by (y) seven, and,
if such quotient is not a whole number, rounding such quotient up to the nearest
whole number so that,  for example,  if the number of all directors on the board
is seven,  the number of Required  Directors would be five, and if the number of
all directors is nine, the number of Required Directors would be seven.

          4.11 No Integration. The Company shall not make any offers or sales of
any security  (other than the securities to be issued pursuant to the Investment
Transactions)  prior to the  Closing  under  circumstances  that  would  require
registration  of the  securities  being  offered  or sold  hereunder  under  the
Securities  Act or cause  the  offering  of  securities  being  offered  or sold
hereunder to be integrated  with any other offering of securities by the Company
for the purpose of any stockholder  approval provision applicable to the Company
or its securities.

          4.12 Nasdaq Waiver  Application.  On or before  December 23, 1998, the
Company  shall  promptly  prepare and file with The Nasdaq  Stock  Market,  Inc.
("Nasdaq"),  a proper application to obtain the waiver of the requirement of any
vote of the stockholders of the Company under Nasdaq Rule  4310(c)(25),  and any
other  applicable  rules and  regulations.  The Company shall afford  Investor a
reasonable  opportunity  to review and  participate  in the  preparation of such
application,  and shall  provide  prompt  notice to  Investor  of the  filing of
application  and any related  response  or  comments of Nasdaq.  If and when the
Company  receives  such  waiver,  the  Company  shall  promptly  mail to all the
stockholders of the Company the notice required by Rule 4310(c)(25)(H)(ii)(b) of
the Nasdaq Rules.

                                    ARTICLE V

            CONDITIONS TO CONSUMMATION OF THE INVESTMENT TRANSACTION

          5.1  Conditions  to  Investor's   Obligations  for  the  Closing.  The
obligations of Investor to effect the Investment Transactions are subject to the
satisfaction or written waiver of the following conditions:

               (a) the  representations  and warranties of the Company contained
in this Agreement (each of which,  for all purposes of this paragraph,  shall be
read as though none contains any  qualification  as to  materiality  or Material
Adverse Effect) shall be true and correct in all material  respects on and as of
the Closing Date (irrespective of any notice delivered after the date hereof);

               (b) the Company shall have performed in all material respects all
of its  obligations  under this Agreement  required to be performed prior to the
Closing Date;

               (c) there  shall not have  occurred  after  the date  hereof  any
Material Adverse Effect;

               (d) Investor  shall have received a certificate  of the President
of the  Company,  and such other  officers of the Company as are  designated  by
Investor,  on behalf of the Company,  certifying  as to the  fulfillment  of the
conditions set forth in clauses (a), (b) and (c) above;

               (e) no statute, rule, regulation,  judgment,  order or injunction
shall be enacted, entered,  promulgated or enforced,  threatened or proposed (i)
challenging  the  transactions  contemplated  hereby,  seeking  to  restrain  or
prohibit the  Investment  Transactions  or any other  transactions  contemplated
hereby or seeking any  damages  from the Company or  Investor,  (ii)  seeking to
impose  limitations  on the ability of Investor to acquire or hold,  or exercise
full rights of ownership of, any Securities or the Conversion Shares,  including
the right to vote the Shares (or Conversion  Shares),  or (iii) which  otherwise
would be reasonably likely to have a Material Adverse Effect;

               (f) Investor shall have been provided with evidence  satisfactory
to the Investor in its  discretion  that the Board of Directors has approved the
transactions  contemplated  by this Agreement for purposes of Section 203 of the
DGCL;

               (g) Investor shall have received a certificate, dated the Closing
Date,  duly  executed by the  Secretary of the Company  certifying as to (i) the
attached copy of resolutions of the Board of Directors authorizing and approving
the  execution,  delivery and  performance  of this  Agreement and the Ancillary
Agreements and the  consummation  of the  transactions  contemplated  hereby and
thereby and  stating  that such  resolutions  have not been  modified,  amended,
revoked or rescinded and (ii) the incumbency,  authority and specimen  signature
of each  officer of the  Company  executing  this  Agreement  and any  Ancillary
Agreement and any other instrument delivered in connection herewith.

               (h) Investor  shall have received a certificate  of the Company's
organization, valid existence and good standing as a domestic corporation in the
State of  Delaware  as of a date not more than five  days  prior to the  Closing
Date;

               (i)  Investor  shall have  received  an opinion of counsel to the
Company, dated the Closing Date, in the form attached hereto as Exhibit D;

               (j) the Company shall have  received  (and  furnished to Investor
evidence thereof reasonably  satisfactory to Investor) any necessary or required
approvals or consents  from all  Governmental  Entities and other third  parties
necessary  or  required  to  complete  the  transactions  contemplated  by  this
Agreement and the Ancillary  Agreements,  and such  approvals and consents shall
not have been withdrawn or expired as of the Closing Date;

               (k) the  Company  shall have  received  a waiver  from The Nasdaq
Stock Market,  Inc. as to any requirement for a vote of the  stockholders of the
Company in connection with the Investment Transactions;

               (l) (1) the three  designees of Investor  shall have been elected
to the Board of  Directors,  (2) the  Company  shall have  amended its Bylaws to
permit the  supermajority  voting  requirements  of  directors  contemplated  by
Section  4.10,  and (3) the Company  shall have entered into an  Indemnification
Agreement  with each of such designees  providing  benefits no less favorable to
the indemnitees than are provided under the Indemnification Agreement previously
entered into by the Company and its directors;

               (m) with respect to the Loan  Agreement,  dated January 27, 1998,
between the Company and Bank Boston,  N.A.  ("Bank Boston") and the Master Lease
Agreement,  dated March 20, 1998,  between the Company and  BancBoston  Leasing,
Inc.  (with  Bank  Boston,   the  "Lenders")   (each  a  "Loan   Agreement"  and
collectively,  the "Loan  Agreements"),  Investor  shall have received  evidence
satisfactory  to it that (i) the Company has obtained  from Lenders (A) a waiver
of all defaults or events of default that occurred under the Loan  Agreements on
or before  September  30, 1998 or that are  continuing  and (B) all consents and
approvals  necessary  to  consummate  the  transactions   contemplated  by  this
Agreement and the Ancillary  Agreements and (ii) the Loan  Agreements  have been
amended such that (A) the Company's  independent  auditors will not be precluded
from issuing  reports in  connection  with the  Company's  financial  statements
without qualification as to the Company's status as a going concern, (B) without
further  modification,  all of the  Company's  outstanding  debt  under the Loan
Agreements  as at  September  30,  1999 may be  accounted  for on the  Company's
consolidated  balance  sheets as of such  date,  in  accordance  with  generally
accepted accounting principles, as long-term debt (except for current maturities
and any amounts  accelerated  as a result of defaults or events of default after
the  Closing  Date)  and (C) the  terms of such  Loan  Agreements,  as  amended,
including without limitation any financial covenants and financial ratios, would
not, given the financial  position and business  prospects of the Company at and
following the Closing, reasonably be expected to result in a default or an event
of  default  under  either  of the  Loan  Agreements,  or  result  in  facts  or
circumstance  that,  with the  passage  of time or the giving or notice or both,
would  result  in a  default  or an event of  default  under  either of the Loan
Agreements;

               (n) the Company shall have obtained the additional coverage under
the D&O Policy as provided in Section 4.5(b);

               (o) no  Litigation  (i) by or on  behalf of the  stockholders  or
former  stockholders  of  the  Company  or  by  or  on  behalf  of  the  Company
derivatively  or (ii)  which  could  result in a  Material  Adverse  Effect,  in
addition  in either case to that  disclosed  on  Schedule  2.9,  shall have been
initiated, nor shall any existing Litigation so disclosed have been amended in a
manner so as to  materially  increase the aggregate  potential  liability of the
Company, its Subsidiaries and its or their respective directors and officers;

               (p) Investor shall have received a certificate  from the transfer
agent for the  Common  Stock  certifying  the  number of shares of Common  Stock
issued and outstanding as of the close of business on the day before the Closing
Date,  which number shall not be more than 8,071,250  increased by the number of
shares of Common Stock issued in compliance with Section 4.1(b) hereof; and

               (q) the Company shall have  delivered  certificates  representing
the Securities to Investor.

          5.2  Conditions  to the  Company's  Obligations  for the Closing.  The
obligations of the Company to effect the Investment  Transactions are subject to
the satisfaction or written waiver of the following conditions:

               (a) the  representations  and warranties of Investor contained in
this Agreement shall be true and correct in all material respects,  on and as of
the Closing Date  (irrespective  of any notice delivered after the date hereof),
and  Investor  shall  have  performed  in  all  material  respects  all  of  its
obligations  under this Agreement  required to be performed prior to the Closing
Date; and

(b) the Company shall have received a certificate,  dated the Closing Date, duly
executed by the president or another executive  officer of Investor,  certifying
as to the fulfillment of the condition set forth in clause (a) above;

(c) the Company shall have received a certificate,  dated the Closing Date, duly
executed by the president or other executive officer of Investor,  certifying as
to (i) the correctness  and  completeness of a copy the Articles of Organization
of  Andlinger  Capital  XIII LLC,  which shall be attached as an exhibit to such
certificate,  (ii)  the  due  authorization  and  approval  by  Investor  of the
Investment  Transactions and any other transactions  contemplated  hereby, (iii)
such officer's  incumbency,  and the incumbency of any other officer of Investor
who has  executed  this  Agreement  or any  Ancillary  Agreement,  and  (iv) the
authority of each of them to execute,  deliver and perform on behalf of Investor
and in  Investor's  name this  Agreement  and the  Ancillary  Agreements  and to
consummate the transactions contemplated hereby and thereby;

          (d) the Company  shall have  received a waiver  from The Nasdaq  Stock
Market, Inc. as to any requirement for a vote of the stockholders of the Company
in connection with the Investment Transactions; and

          (e) Investor shall have delivered the Purchase Price to the Company.

                                   ARTICLE VI

                        TERMINATION; AMENDMENT; INDEMNITY

          6.1 Termination. This Agreement may be terminated and the transactions
contemplated hereby may be abandoned at any time prior to the Closing Date:

               (a) by mutual written consent of the Company and Investor;

               (b) by either the Company or Investor:

                    (i) if the Closing does not occur by 5:00 p.m.  Eastern Time
on  January  31,  1999;  provided,  however,  that the right to  terminate  this
Agreement pursuant to this Section 6.1(b)(i) shall not be available to any party
whose failure to fulfill any of its obligations  under this Agreement results in
the failure of this condition;

                    (ii) if any  court of  competent  jurisdiction  or any other
governmental  body  shall  have  issued an order,  decree or ruling or taken any
other action  permanently  enjoining,  restraining or otherwise  prohibiting the
Investment Transactions and the other transactions  contemplated hereby and such
order, decree, ruling or other action shall have become final and nonappealable;
or

               (c) by  Investor  (i) if the Board of  Directors  of the  Company
withdraws or modifies, or proposes to withdraw or modify, in a manner adverse to
Investor,  the  approval  or  authorization  by such Board of  Directors  or any
committee of such board of the transactions  contemplated by this Agreement,  or
if such board approves or recommends,  or proposes to approve or recommend,  any
Sale or if such board enters into any agreement  with respect to any Sale,  (ii)
if the Company fails to perform in any material  respect any of its  obligations
under this Agreement,  and such failure has not been cured within seven business
days after written notice of the failure from Investor to the Company,  (iii) at
any time  when the  condition  set  forth in  Section  5.1(a)  is not  satisfied
(regardless  of  whether  such  decision  is based on any event or  circumstance
Investor  knows or could be  deemed  to know as of the date  hereof),  provided,
that, if such  non-satisfaction  is curable,  Investor may terminate pursuant to
this clause (iii) only if such condition remains unsatisfied seven business days
after Investor gives notice of such  non-satisfaction  to the Company or (iv) if
shares of Common Stock are no longer listed or  authorized  for quotation on the
Nasdaq National Market,  or there is some reasonable  likelihood that the Common
Stock,  after giving effect to the  transactions  contemplated  hereby,  will no
longer be listed or authorized for quotation on the Nasdaq National Market.

               (d) by the Company (i) as provided in Section 4.2 in respect of a
Superior Proposal  (provided the Company shall have paid the Termination Fee and
the Expense  Fee to the extent  required  by Section  6.3(b)),  (ii) if Investor
fails to perform  in any  material  respect  any of its  obligations  under this
Agreement,  and such failure has not been cured within seven business days after
written  notice of the  failure  from  Company to  Investor or (iii) if Investor
breaches in any  material  respect  any of its  representations  and  warranties
hereunder.

          6.2  Effect  of  Termination.  In the  event  of the  termination  and
abandonment of this Agreement  pursuant to Section 6.1, this  Agreement,  except
for the  provisions of this Section 6.2 and Sections 6.3, 6.5, 6.6 and 7.10 (and
except for any other  sections,  schedules  or  provisions  referred  to in such
sections to the extent  necessary to give them effect)  shall  forthwith  become
void and have no effect,  without any  liability on the part of any party or its
directors,  officers or shareholders,  provided,  however,  that nothing in this
Section 6.2 shall relieve any party to this Agreement of liability for breach of
this Agreement.

          6.3 Termination Fee and Expense Fee.

               (a) In  addition  to any other  amounts  which may be  payable or
become payable pursuant to this Agreement, the Company shall, at the Closing and
from time to time after the Closing,  or in the case of any  termination of this
Agreement other than termination by the Company  pursuant to Section  6.1(d)(ii)
or (iii),  promptly,  but in no event later than five  business  days after such
termination,   reimburse  Investor  for  all  out-of-pocket  expenses  and  fees
(including,  without limitation,  fees payable to all banks,  investment banking
firms and other financial institutions, and their respective agents and counsel,
and all fees of counsel,  accountants,  experts and  consultants to Investor and
its  affiliates),  in an amount not to exceed  $100,000  except as  provided  in
Section  6.3(d),  whether  incurred  prior to, on or after the date  hereof,  in
connection  with  the  Investment  Transactions  and  the  consummation  of  all
transactions contemplated by this Agreement (such fee, the "Expense Fee").

               (b) If this  Agreement  shall have been  terminated  by  Investor
pursuant to Section  6.1(c)(i) or by the Company pursuant to Section  6.1(d)(i),
and on or prior to one year from the date  hereof any  Superior  Proposal  shall
have been  consummated,  then the Company shall promptly,  but in no event later
than five  business  days  after  the event  giving  rise to such  payment,  pay
Investor a fee of $600,000 in cash (the "Termination  Fee"),  which amount shall
be payable in same day funds.  No amount  payable  pursuant  to any of the other
provisions  of this  Agreement  shall reduce the amount of the  Termination  Fee
payable pursuant to this Section 6.3(b).

               (c) In addition to the other  provisions  of this Section 6.3, in
the event an Expense Fee or Termination Fee is or becomes  payable,  the Company
agrees promptly, but in no event later than five business days following written
notice thereof,  together with related bills or receipts,  to reimburse Investor
for all reasonable  out-of-pocket costs, fees and expenses,  including,  without
limitation, the reasonable fees and disbursements of counsel and the expenses of
litigation,  incurred  in  connection  with  collecting  such  Expense  Fee  and
Termination  Fee as a result of any  breach by the  Company  of its  obligations
under this Section 6.3.

               (d) If  expenses  are  incurred  that  would be  included  in the
Expense Fee but for the $100,000  limitation  set forth in Section  6.3(a),  and
such  expenses are in any way related to any Superior  Proposal  received by the
Company  (including any tender offer made to stockholders of the Company),  then
the Expense  Fee  payable  hereunder  shall be  increased  by the amount of such
expenses,  but only to the extent that the  proceeds  received by the Company or
its stockholders from the related  transaction exceed the Purchase Price payable
hereunder.

          6.4  Amendment.  This  Agreement  may  not  be  amended  except  by an
instrument in writing signed by all the parties.

          6.5 Company's Obligation to Indemnify. From and after the Closing, and
subject to the  limitations  contained  in  Sections  6.10(a) and  6.10(b),  the
Company shall indemnify,  defend and hold harmless Investor,  its affiliates and
each person, if any, who controls  Investor,  or any of its affiliates,  and the
respective agents, employees, officers and directors of Investor, its affiliates
and any controlling person of any of them (the "Investor Indemnified  Parties"),
to the fullest  extent  lawful,  from and  against  any and all claims,  losses,
settlements,  fines,  liabilities,  damages,  deficiencies,  costs  or  expenses
(including,   as  incurred   and  without   limitation,   reasonable   costs  of
investigating,  preparing  or  defending  any  of  the  foregoing)  (any  of the
foregoing, "Losses") suffered, sustained or incurred, directly or indirectly, or
required to be paid by, any Investor  Indemnified  Party, but only to the extent
that such Losses are due to, based upon, arise out of or otherwise relate to (a)
any  inaccuracy  in, or any breach of, any  representation  or  warranty  of the
Company  contained in this Agreement (or any disclosure  schedules hereto or any
certificate or other  documents  delivered on behalf of the Company  hereunder),
(b) any breach of any  covenant or  agreement  of the Company  contained in this
Agreement or (c) in connection  with any Litigation by stockholders or on behalf
of stockholders of the Company, or by or on behalf of the Company  derivatively,
which in any such case  arises as a result of the entry into this  Agreement  or
the consummation of the transactions  contemplated hereby,  provided,  that, the
Company shall have no  obligation  hereunder to any Investor  Indemnified  Party
with respect to Losses arising from the gross  negligence,  bad faith or willful
misconduct on the part of such Investor  Indemnified  Party. With respect to the
indemnity  provided by clause (c),  no waiver by Investor of the  condition  set
forth in  Section  5.1(o)  shall be  deemed  to waive  the  application  of such
indemnity.

          6.6  Investor's  Obligation to Indemnify.  From and after the Closing,
and  subject to the  limitations  contained  in Sections  6.10(a)  and  6.10(c),
Investor  shall  indemnify,  defend  and  hold  harmless  the  Company  and  its
affiliates,   and  their   respective   directors,   officers,   employees   and
representatives  (each, a "Company Indemnified Party"), from and against any and
all Losses  suffered,  sustained,  incurred  or  required to be paid by any such
Company  Indemnified  Party due to,  based upon,  arising out of or otherwise in
respect  of (a) any  inaccuracy  in, or any breach  of,  any  representation  or
warranty of Investor  contained in this Agreement (or any  disclosure  schedules
hereto or any  certificate  or other  document  delivered  on behalf of Investor
hereunder) or (b) any breach of any covenant or agreement of Investor  contained
in this Agreement.

          6.7 Indemnity  Procedures for Third Party Claims.  The obligations and
liabilities  of  any  party  hereto  against  which  indemnification  is  sought
hereunder  with respect to claims  resulting  from the assertion of liability by
third parties shall be subject to this Section 6.7.

               (a) Promptly  (but in no event later than 30 days) after  receipt
by any  indemnified  party hereunder (an  "Indemnified  Party") of notice of any
demand or claim or the commencement (or threatened  commencement) of any action,
proceeding or investigation  (an "Asserted  Liability") that could reasonably be
expected to result in a Loss,  the  Indemnified  Party shall give written notice
thereof  (a  "Claims   Notice")  to  any  other  party   obligated   to  provide
indemnification  pursuant to Section 6.5 or 6.6 (each, an "Indemnifying Party").
Each Claims Notice shall describe the Asserted  Liability in reasonable  detail,
and shall  indicate the amount  (estimated,  if  necessary) of the Loss that has
been or may be suffered by the Indemnified  Party. The rights of any Indemnified
Party to be indemnified hereunder shall not be adversely affected by its failure
to give,  or its failure to timely  give, a Claims  Notice with respect  thereto
unless, and if so, only to the extent that, the Indemnifying Party is prejudiced
thereby.

               (b) The Indemnifying  Party may elect to compromise or defend, at
its own  expense  and by its own  counsel,  any  Asserted  Liability;  provided,
however,  that if the parties in any action shall  include both an  Indemnifying
Party and an Indemnified  Party, and the Indemnified Party shall have reasonably
concluded  that  counsel  selected by the  Indemnifying  Party has a conflict of
interest because of the availability of different or additional  defenses to the
Indemnified Party, the Indemnified Party shall have the right to select separate
counsel to  participate  in the  defense of such  action on its  behalf,  at the
expense  of  the  Indemnifying  Party.  If  the  Indemnifying  Party  elects  to
compromise  or  defend  such  Asserted  Liability,  it shall  within 30 days (or
sooner,  if the  nature  of the  Asserted  Liability  so  requires)  notify  the
Indemnified  Party of its  intent to do so. An  Indemnifying  Party  shall  not,
without  the prior  written  consent  of the  Indemnified  Party,  (i) settle or
compromise any Asserted  Liability or consent to the entry of any judgment which
does not include as an  unconditional  term thereof the delivery by the claimant
or plaintiff to the Indemnified Party of a written release from all liability in
respect of such  Asserted  Liability or (ii) settle or  compromise  any Asserted
Liability  in any manner  that would  reasonably  be expected to have a material
adverse effect on the Indemnified Party. If the Indemnifying Party elects not to
compromise or defend the Asserted  Liability or fails to notify the  Indemnified
Party of its  election  as  herein  provided,  the  Indemnified  Party  may pay,
compromise  or defend such Asserted  Liability.  The  Indemnified  Party and the
Indemnifying Party may participate,  at their own expense, in the defense of any
Asserted  Liability  as to which  such  party does not  control  the  defense or
settlement.  If  the  Indemnifying  Party  chooses  to  defend  any  claim,  the
Indemnified  Party  shall,  subject to receipt of a  reasonable  confidentiality
agreement,  make available to the Indemnifying Party any books, records or other
documents  within its control,  and the reasonable  assistance of its employees,
for which the  Indemnifying  Party shall be obliged to reimburse the Indemnified
Party the reasonable out-of-pocket expenses of making them available.

          6.8 Indemnity  Procedures for Claims by the Parties. In the event that
any party incurs or suffers any Losses with respect to which indemnification may
be sought by such party  pursuant  to this  Article VI (other than in respect of
third party  claims),  the  Indemnified  Party must assert the claim by a Claims
Notice to the  Indemnifying  Party.  The Claims Notice must state the nature and
basis of the claim in reasonable  detail based on the  information  available to
the Indemnified  Party. Each Indemnifying Party to whom a Claims Notice is given
shall respond to any Indemnified  Party that has given a Claims Notice (a "Claim
Response") within 30 days (the "Response Period") after the date that the Claims
Notice  is  received.  Any  Claim  Response  shall  specify  whether  or not the
Indemnifying Party giving the Claim Response disputes the claim described in the
Claims  Notice  (including as to whether the  Indemnifying  Party is required to
provide  indemnification  hereunder).  If any  Indemnifying  Party elects not to
dispute a claim  described  in a Claims  Notice,  whether  by  failing to give a
timely  Claim  Response  or  otherwise,  then the amount of such claim  shall be
deemed to be an obligation of such Indemnifying Party. If the Indemnifying Party
disputes  the  claim,  the  parties  will try in good  faith for a period not to
exceed 60 days to settle the dispute by mediation in Boston,  Massachusetts  (or
other  location   agreeable  to  the  parties)   administered  by  the  American
Arbitration  Association under its Commercial Mediation Rules.  Thereafter,  any
party hereto will be free to pursue  litigation or any other remedies  available
to such party in accordance with applicable law.

          6.9 Effect of Insurance and Tax Benefits.  In computing an Indemnified
Party's Losses hereunder, full allowance shall be made for any proceeds actually
recovered  by such party from such  party's  insurance  policies and for any tax
benefits  received  by  such  party  (net  of any  tax  burdens  imposed  on the
Indemnified Party as a result of the proceeds of any indemnity hereunder).

          6.10 Limitations on  Indemnification;  Exclusive Remedy. (a) Any claim
for indemnification by an Investor  Indemnified Party pursuant to Section 6.5(a)
or by a Company  Indemnified  Party pursuant to Section 6.6(a) shall be received
by the applicable  Indemnifying  Party in writing within 36 months following the
Closing  Date (and any such  claim  received  after  such date shall be null and
void),   except   that  (i)  claims   for   indemnification   relating   to  the
representations and warranties  contained in Sections 2.11, 2.12 and 2.14 may be
made until the  expiration  of the  statute of  limitations  applicable  to such
matters,  (ii) claims for  indemnification  relating to the  representations and
warranties  contained in Sections 2.1, 2.2, 2.3, 2.4 and 3.1 may be made forever
and  (iii)  there  shall  be no  time  limit  for  making  any  claim  for  such
indemnification  if the  representation or warranty on which such claim is based
was made with  actual  knowledge  that it  contained  an untrue  statement  of a
material  fact or  omitted  to  state a  material  fact  necessary  to make  the
statements or facts contained therein not misleading. The covenants contained in
this Agreement shall survive forever.

               (b) The  Company  shall  not be liable  to  Investor  Indemnified
Parties for  indemnification  claims under Section  6.5(a) until the  cumulative
amount of Investor  Indemnified  Party  Losses  relating to such claims  exceeds
$50,000,  at which  time the  Company  shall be liable  only for such  Losses in
excess of such amount; provided, that, the foregoing condition and limitation on
liability   shall  not  apply  to   claims   pertaining   to  a  breach  of  the
representations  or  warranties  contained in Sections 2.1, 2.2, 2.3 and 2.4 and
provided,  further,  that the foregoing  condition  and  limitation on liability
shall not apply to the breach of any of the  representations  and  warranties of
the Company  contained herein if such  representation  or warranty was made with
actual  knowledge  that it contained an untrue  statement of a material  fact or
omitted to state a  material  fact  necessary  to make the  statements  or facts
contained therein not misleading.

               (c) Investor shall not be liable to Company  Indemnified  Parties
for  indemnification  claims under Section 6.6(a) until the cumulative amount of
Company  Indemnified  Party Losses relating to such claims exceeds  $50,000,  at
which  time  Investor  shall be  liable  only for such  Losses in excess of such
amount;  provided,  that,  the foregoing  condition and  limitation on liability
shall not  apply to claims  pertaining  to a breach  of the  representations  or
warranties  contained in Section 3.1 and provided,  further,  that the foregoing
condition and  limitation  on liability  shall not apply to the breach of any of
the  representations  and  warranties  of  Investor  contained  herein  if  such
representation  or warranty was made with actual  knowledge that it contained an
untrue  statement  of a  material  fact or  omitted  to  state a  material  fact
necessary to make the statements or facts contained therein not misleading.

               (d) The  indemnification  provisions  of this Article VI shall be
the exclusive remedy hereunder  following the Closing,  except for the remedy of
specific  performance  as provided  in Section  7.3 or unless  there has been an
instance of fraud or willful breach of the provisions  hereof. In no event shall
any officer of Investor be  personally  liable as a result of  Investor's  entry
into, or the consummation of the  transactions  contemplated by, this Agreement.
In the event of willful breach by the Company of its obligations hereunder prior
to the  Closing,  Investor  shall  be  entitled  to  recover  from  the  Company
Investor's  costs and reasonable  attorneys' fees in connection with any suit to
recover damages suffered in connection with such breach.

                                   ARTICLE VII

                                  MISCELLANEOUS

          7.1 Extension; Waiver. The parties hereto, may (a) extend the time for
the  performance  of any of the  obligations  or other acts of the other parties
hereto,  (b)  waive  any  inaccuracies  in the  representations  and  warranties
contained herein by any other  applicable party or in any document,  certificate
or writing delivered  pursuant hereto by any other applicable party or (c) waive
compliance  with any of the  agreements  or  conditions  contained  herein.  Any
agreement  on the part of any party to any such  extension  or  waiver  shall be
valid only if set forth in an  instrument  in  writing  signed on behalf of such
party.

          7.2  Entire  Agreement;  Assignment.  This  Agreement  (including  the
Schedules  hereto),  the  Ancillary  Agreements  and  the  other  documents  and
instruments  contemplated  hereby, (a) constitute the entire agreement among the
parties with respect to the subject  matter hereof and supersede all other prior
agreements and  understandings,  both written and oral, among the parties or any
of them with respect to the subject  matter hereof and (b) shall not be assigned
by operation of law or  otherwise,  provided that Investor may assign any of its
rights and  obligations  to any  affiliate of Investor,  but no such  assignment
shall relieve Investor of its obligations  hereunder,  and provided further that
Investor  may assign its rights  and  obligations  to any of its  members or any
affiliates  of its  members  so long as such  assignment  does not  require  the
Company to make any filing under the  Hart-Scott-Rodino  Antitrust  Improvements
Act of 1976, as amended, in connection with such assignment and the transactions
contemplated hereby.

          7.3  Enforcement  of the  Agreement.  The  parties  hereto  agree that
irreparable  damage would occur in the event that any of the  provisions of this
Agreement  were not performed in accordance  with their  specific  terms or were
otherwise breached.  It is accordingly agreed that the parties shall be entitled
to an injunction or  injunctions  to prevent  breaches of this  Agreement and to
enforce  specifically  the terms and  provisions  hereof in any Federal or state
court  located in the State of Delaware (as to which the parties agree to submit
to  jurisdiction  for the purposes of such or any other  action),  this being in
addition to any other remedy to which they are entitled at law or in equity.

          7.4 Validity.  The invalidity or  unenforceability of any provision of
this  Agreement  shall not affect the  validity or  enforceability  of any other
provisions of this Agreement, which shall remain in full force and effect.

          7.5  Notices.  All  notices,   requests,  claims,  demands  and  other
communications  hereunder  shall be in writing  and shall be deemed to have been
duly given when delivered in person, by cable, telegram,  facsimile transmission
with  confirmation  of receipt,  or telex,  or by registered  or certified  mail
(postage  prepaid,  return  receipt  requested)  to the  respective  parties  as
follows:

                           if to Investor:

                           Andlinger Capital XIII LLC
                           c/o Andlinger & Company, Inc.
                           303 South Broadway, Suite 229
                           Tarrytown, NY 10591
                           Attention: Stephen A. Magida
                           Fax: 914-332-4977

                           with a required copy to:

                           Dechert Price & Rhoads
                           30 Rockefeller Plaza
                           New York, NY 10112
                           Attention:  Paul Gluck, Esq.
                           Fax:  212-698-3599

                           if to the Company:

                           Galileo Corporation
                           Galileo Park
                           P.O. Box 550
                           Sturbridge, MA 01566-0550
                           Attention:  President
                           Fax: 508-347-2270

                           with a copy to:

                           Palmer & Dodge LLP
                           One Beacon Street
                           Boston, MA 02108
                           Attention: David R. Pokross, Jr., Esq.
                           Fax: 617-227-4420

or to such  other  address  as the  person  to whom  notice  is  given  may have
previously  furnished  to the others in  writing  in the manner set forth  above
(provided  that  notice of any change of address  shall be  effective  only upon
receipt thereof).

          7.6 Governing Law. This  Agreement  shall be governed by and construed
in accordance with the substantive  laws of the State of Delaware  regardless of
the laws that might  otherwise  govern  under  principles  of  conflicts of laws
applicable thereto.

          7.7 Descriptive Headings. The descriptive headings herein are inserted
for  convenience  of  reference  only and are not  intended  to be part of or to
affect the meaning or interpretation of this Agreement.

          7.8 Parties in  Interest.  This  Agreement  shall be binding  upon and
inure solely to the benefit of each party hereto, and nothing in this Agreement,
express or implied,  is  intended to confer upon any other  person any rights or
remedies of any nature whatsoever under or by reason of this Agreement.

          7.9  Counterparts.  This  Agreement  may be  executed  in two or  more
counterparts,  each of which shall be deemed to be an original, but all of which
shall constitute one and the same agreement.

          7.10  Expenses.  Except as otherwise  provided  herein,  all costs and
expenses  incurred in  connection  with the  transactions  contemplated  by this
Agreement and the Ancillary Agreements shall be paid by the party incurring such
expenses.

          7.11  Certain  Definitions.   For  purposes  of  this  Agreement,  the
following terms shall have the meanings ascribed to them below:

               (a) "affiliate" of a person shall mean (i) a person that directly
or indirectly,  through one or more intermediaries,  controls, is controlled by,
or is  under  common  control  with,  the  first-mentioned  person  and  (ii) an
"associate" shall have the meaning set forth in Rule 12b-2 promulgated under the
Exchange Act as in effect on the date of this Agreement.

               (b) "beneficial  owner" (including the term "beneficially own" or
correlative  terms) with respect to any securities  means a person that shall be
deemed to be the beneficial owner of such securities (i) that such person or any
of its affiliates  beneficially  owns,  directly or  indirectly,  (ii) that such
person or any of its affiliates  has,  directly or indirectly,  (A) the right to
acquire (whether such right is exercisable immediately or only after the passage
of time),  pursuant to any agreement,  arrangement or  understanding or upon the
exercise of  consideration  rights,  exchange  rights,  warrants or options,  or
otherwise,  or (B) the right to vote pursuant to any  agreement,  arrangement or
understanding or (iii) that are beneficially owned,  directly or indirectly,  by
any  other  person  with  which  such  person or any of its  affiliates  has any
agreement,  arrangement or understanding for the purpose of acquiring,  holding,
voting or disposing of any of such securities.

               (c) "control" (including the terms "controlling," "controlled by"
and "under common control" with or correlative terms) shall mean the possession,
direct  or  indirect,  of the power to  direct  or cause  the  direction  of the
management  and  policies  of a  person,  whether  through  ownership  of voting
securities, by contract, or otherwise.

               (d) "fully  diluted" in  reference  to the shares of Common Stock
means all outstanding  securities  entitled generally to vote in the election of
directors of the Company on a fully  diluted  basis,  after giving effect to the
exercise or  conversion of all options,  rights and  securities  exercisable  or
convertible into such voting securities.

               (e) "Material  Adverse Effect" shall mean (i) a material  adverse
change in the business,  operations, results of operations, assets, prospects or
condition  (financial or otherwise) of the Company and its Subsidiaries taken as
a whole,  (ii) a material  adverse  change in the ability of the Company and its
Subsidiaries to conduct their business after the Closing in a manner  consistent
with past practice, and (iii) any impairment of the Company's ability to perform
its  obligations  under this Agreement and the Ancillary  Agreements,  provided,
that,  any decrease or series of decreases in the trading price of the Company's
Common  Stock  shall not, in and of itself,  be deemed to be a Material  Adverse
Effect and provided,  further, that (1) net losses of the Company incurred after
September  30, 1998 and prior to December 31, 1998 (as  determined in accordance
with generally accepted accounting  principles) that do not exceed $4,850,000 in
the aggregate,  (2) net losses of the Company  incurred after September 30, 1998
and prior to January  31,  1999 (as  determined  in  accordance  with  generally
accepted accounting  principles) that do not exceed $5,120,000 in the aggregate,
or (3) the issuance of an audit report with  respect to the  September  30, 1998
financial statements which includes a going concern  qualification shall not, in
and of itself, be deemed to be a Material Adverse Effect hereunder. When used in
connection with representations, warranties, covenants and conditions, such term
means  the  individual  effect  of the  item to which  it  relates  and also the
aggregate effect of all similar items, unless the context indicates otherwise.

               (f) "Permitted  Transferee",  for the purposes of this Agreement,
shall have the meaning given such term in the Stockholders'  Agreement,  whether
or not the Stockholders' Agreement is in effect.

               (g) "Person" shall mean a natural person,  company,  corporation,
partnership,  association,  trust,  unincorporated  organization  or "group" (as
referred to in Section 13(d)(3) of the Exchange Act).



<PAGE>


          IN WITNESS  WHEREOF,  each of the parties has caused this Agreement to
be executed on its behalf by its officers thereunto duly authorized,  on the day
and year first above written.

                                             GALILEO CORPORATION



                                              By /s/ W. Kip Speyer
                                                 -----------------
                                                  Name:  W. Kip Speyer
                                                  Title: President




                                              ANDLINGER CAPITAL XIII LLC


                                              By /s/ Stephen A. Magida
                                                 ----------------------
                                                  Stephen A. Magida
                                                  Title: Manager


<PAGE>

                                                                       Exhibit A

NEITHER THIS WARRANT NOR THE SECURITIES  ISSUABLE HEREUNDER HAVE BEEN REGISTERED
UNDER THE SECURITIES  ACT OF 1933, AS AMENDED.  THE TRANSFER OF THIS WARRANT AND
THE SECURITIES UNDERLYING THIS WARRANT IS RESTRICTED, AND NO TRANSFER,  EXERCISE
OR  SURRENDER  FOR  EXCHANGE  OF THIS  WARRANT OR  TRANSFER  OF SUCH  UNDERLYING
SECURITIES  SHALL BE VALID OR  EFFECTIVE  UNLESS AND UNTIL THERE SHALL HAVE BEEN
COMPLIANCE WITH THE TERMS AND CONDITIONS OF ARTICLE III OF THIS WARRANT.

                               GALILEO CORPORATION
                         ------------------------------

                            WARRANT FOR COMMON STOCK

Warrant No. W-___                                       No. of Shares: 2,000,000


          THIS IS TO CERTIFY THAT, for value  received,  ANDLINGER  CAPITAL XIII
LLC,  or its  assigns,  is  entitled to purchase  from  GALILEO  CORPORATION,  a
Delaware corporation (the "Corporation"), at any time or from time to time after
the date  hereof,  at the place where the Warrant  Office to which  reference is
hereinafter made is located, at a purchase price of $1.50 per share,  subject to
adjustment as hereinafter  provided  (such price,  as adjusted from time to time
being hereinafter  referred to as to "Exercise Price"),  TWO MILLION (2,000,000)
shares,  subject to adjustment as hereinafter  provided (the "Shares"),  of duly
authorized, validly issued, fully paid and nonassessable shares of Common Stock,
par value $.01 per share (the "Common Stock"), of the Corporation.  The right of
the holder of this  Warrant to  purchase  any Shares  under this  Warrant  shall
terminate  at 5:00 p.m.  (New York City time) on [insert  date 7 1/2 years after
Original  Issue Date]  hereunder  (except as to any  purchase  rights under this
Warrant exercised before such time).

          The holder of this Warrant shall be entitled to receive  together with
the Shares,  for the  purchase  price per share set forth  above,  any shares of
capital stock or securities, any convertible or exchangeable securities, and any
rights or options to  subscribe  for or to purchase  shares of capital  stock or
securities or convertible or exchangeable securities to which the holder of this
Warrant  shall  hereafter be entitled by reason of any  transaction  of the type
described in Article IV hereof.

          This Warrant is one of one or more  warrants (the  "Warrants")  of the
same form and having the same terms (except as to the number of shares of Common
Stock purchasable  thereunder) as this Warrant,  entitling the holders initially
to purchase up to an aggregate of two million  shares of Common  Stock.  Certain
terms used in this Warrant are defined in Article V.


                                    ARTICLE I

                              EXERCISE OF WARRANTS


          1.01 Method of Exercise.  This Warrant may be exercised in whole or in
any partial  exercise  aggregating  at least 1,000  shares of Common  Stock.  To
exercise this Warrant,  the holder hereof shall deliver to the  Corporation,  at
the Warrant Office designated pursuant to Section 2.01,

                    (i) a  written  notice,  in  substantially  the  form of the
          Exercise  Notice  attached  as an  exhibit  hereto,  of such  holder's
          election to exercise  this  Warrant,  which notice  shall  specify the
          number of Shares to be purchased,

                    (ii) an amount equal to the aggregate Exercise Price for the
          number  of  Shares  being  purchased,  payable  by check  (subject  to
          collection) payable to the order of the Corporation, and

                    (iii) this Warrant.

The Corporation  shall,  as promptly as practicable,  and in any event within 10
days thereafter,  execute and deliver or cause to be executed and delivered,  in
accordance  with said notice,  a certificate or  certificates  representing  the
aggregate  number of Shares  specified in said notice,  together  with any other
consideration required to be delivered in accordance with Article IV hereof. The
certificate or certificates so delivered shall be in such  denominations  as may
be  specified  in said  notice and shall be issued in the name of such holder or
such other name as shall be  designated  in said  notice.  Such  certificate  or
certificates  shall be deemed to have been issued, and such holder or holders or
any other  person so  designated  to be named  therein  shall be deemed  for all
purposes to have become a holder of record of such  Shares,  as of the date said
notice is received by the  Corporation as aforesaid.  If this Warrant shall have
been exercised only in part, the  Corporation  shall, at the time of delivery of
said  certificate  or  certificates,  deliver  to  such  holder  a  new  Warrant
evidencing the rights of such holder to purchase the remaining Shares called for
by this Warrant, which new Warrant shall in all other respects be identical with
this  Warrant,  or, at the request of such holder,  appropriate  notation may be
made on this Warrant and the same returned to such holder. The Corporation shall
pay all  expenses,  taxes and  other  charges  payable  in  connection  with the
preparation, issuance and delivery of such certificates and new Warrants, except
that, in case such certificates or new Warrants shall be registered in a name or
names other than the name of the holder of this Warrant, funds sufficient to pay
all stock  transfer  taxes  which  shall be payable  upon the  issuance  of such
certificate or  certificates  or new Warrants shall be paid by the holder hereof
at the time of  delivering  the notice of exercise  mentioned  above or promptly
upon receipt of a written request of the Corporation for payment of the same.

          1.02 Warrant Shares to be Fully Paid and Nonassessable.  All shares of
Common Stock and other securities of the Corporation issued upon the exercise of
this Warrant shall be validly issued,  fully paid and nonassessable  and, if the
Common  Stock or other  securities  are then  listed  on a  securities  exchange
(including The Nasdaq Stock Market, Inc.), shall be duly listed thereon.

          1.03 No Fractional  Shares to be Issued.  The Corporation shall not be
required upon any exercise of this Warrant to issue a  certificate  representing
any fraction of a share of Common Stock, but, in lieu thereof,  shall pay to the
holder of this  Warrant  cash in an  amount  equal to a  corresponding  fraction
(calculated to the nearest 1/100 of a share) of the Current Market Price (or, if
no Current Market Price then exists,  the Exercise Price) of one share of Common
Stock as of the date of receipt by the Corporation of notice of exercise of this
Warrant.

          1.04 Legend on Warrant  Shares.  Each  certificate  for Warrant Shares
initially  issued upon exercise of this Warrant,  unless at the time of exercise
such  Warrant  Shares are  registered  under the Act,  shall bear the  following
legend (and any additional legend required by any securities exchange upon which
such Warrant Shares may, at the time of such exercise, be listed):

                  "The securities  represented by this certificate have not been
         registered  under the Securities Act of 1933, as amended.  The transfer
         of the securities represented hereby is subject to the restrictions set
         forth in Article III of the Warrant  pursuant to which such  securities
         were issued, a copy of which Warrant is available for inspection at the
         office of Corporation."

Any  certificate  issued  at any  time  in  exchange  or  substitution  for  any
certificate bearing such legend (except a new certificate issued upon completion
of a public  distribution of the securities  represented  thereby  pursuant to a
registration statement under the Act) shall also bear such legend unless, in the
written opinion  reasonably  acceptable to the Corporation of counsel reasonably
acceptable to the Corporation, the securities represented thereby need no longer
be subject to the restrictions  contained in said Article III. The provisions of
said Article III shall be binding upon all subsequent holders of this Warrant.

          1.05 Acknowledgment of Continuing Obligation. The Corporation will, at
the time of any  exercise of this  Warrant in whole or in part,  upon request of
the holder  hereof,  acknowledge  in writing its  continuing  obligation to such
holder in respect  of all  rights  (including  without  limitation  any right to
registration of the Shares issued upon such exercise) to which such holder shall
continue to be entitled  after such  exercise in  accordance  with this Warrant;
provided,  however,  that the  failure of such  holder to make any such  request
shall not affect the continuing obligations of the Corporation to such holder in
respect of such rights.


                                   ARTICLE II

                            WARRANT OFFICE; TRANSFER,
                       DIVISION OF COMBINATION OF WARRANTS


          2.01 Warrant  Office.  The  Corporation  shall  maintain an office for
certain  purposes  specified herein (the "Warrant  Office"),  which office shall
initially be the Corporation's office at Galileo Park, P.O. Box 550, Sturbridge,
Massachusetts   01566,  and  may  subsequently  be  such  other  office  of  the
Corporation  or of any  transfer  agent of the Common  Stock in the  continental
United States as to which written notice has previously been given to all of the
Warrantholders.

          2.02  Ownership  of Warrant.  The  Corporation  may deem and treat the
person in whose name this Warrant is  registered  as the holder and owner hereof
(notwithstanding  any  notations of  ownership or writing  hereon made by anyone
other than the  Corporation)  for all  purposes and shall not be affected by any
notice to the contrary,  until  presentation of this Warrant for registration of
transfer as provided in this Article II.

          2.03 Transfer of Warrants.  The Corporation  agrees to maintain at the
Warrant  Office books for the  registration  and transfer of the Warrants,  and,
subject to the provisions of Article III, this Warrant and all rights  hereunder
are  transferable,  in whole or in part,  at any time and from time to time,  on
said  books at said  office  upon  surrender  of this  Warrant  at said  office,
together  with a written  assignment of this Warrant duly executed by the holder
hereof or its duly authorized  agent or attorney and funds sufficient to pay any
transfer taxes payable upon the making of such transfer. Upon such surrender and
payment the  Corporation  shall execute and deliver a new Warrant or Warrants in
the name of the assignee or assignees and in the denominations specified in such
instrument of assignment, and this Warrant shall promptly be canceled. A Warrant
may be exercised by a new holder for the purchase of Shares without having a new
Warrant issued.

          2.04 Division or Combination of Warrants.  This Warrant may be divided
or combined with other Warrants upon  presentation  hereof and of any Warrant or
Warrants  with  which this  Warrant is to be  combined  at the  Warrant  Office,
together with a written notice  specifying the names and  denominations in which
new Warrants are to be issued, signed by the holders hereof and thereof or their
respective  duly  authorized  agents or attorneys.  Subject to  compliance  with
Section  2.03 as to any  transfer  which may be  involved  in such  division  or
combination, the Corporation shall execute and deliver a new Warrant or Warrants
in exchange for the Warrant or Warrants to be divided or combined in  accordance
with such notice. Notwithstanding the foregoing provisions in this Section 2.04,
the Corporation shall not be obligated to divide an outstanding Warrant if there
are more than 40 Warrants then outstanding.

          2.05 Expenses of Delivery of Warrants.  The Corporation  shall pay all
expenses,  taxes  (other  than  transfer  taxes)  and other  charges  payable in
connection with the preparation, issuance and delivery of Warrants hereunder.


                                   ARTICLE III

                            RESTRICTIONS ON TRANSFER;
                               REGISTRATION RIGHTS


          3.01  Restrictions on Transfer.  This Warrant shall not be exercisable
or transferable and the related Warrant Shares shall not be transferable  except
upon  the  conditions  specified  in this  Article  III,  which  conditions  are
intended,  among other things,  to insure  compliance with the provisions of the
Act in respect of the  exercise or transfer of such  Warrant or transfer of such
Warrant Shares. The holder of this Warrant,  by acceptance  hereof,  agrees that
such  holder  will  not (i)  transfer  this  Warrant  prior to  delivery  to the
Corporation of an opinion of counsel (as described in Section 3.02), or transfer
such  Warrant  Shares  prior to  delivery  to the  Corporation  of an opinion of
counsel (as  described in Section  3.02) or until  registration  of such Warrant
Shares under the Act has become effective.

          3.02  Opinion  of  Counsel.  If in  the  opinion  of  counsel  to  the
Corporation or other counsel  designated by a majority of the Warrantholders and
reasonably acceptable to the Corporation,  the proposed transfer of this Warrant
and/or the  proposed  transfer  of such  Warrant  Shares will be exempt from the
registration  requirements  under the Act, the holder of this  Warrant  shall be
entitled to  transfer  this  Warrant  and/or  transfer  such  Warrant  Shares in
accordance with the proposed method of  disposition,  and the Corporation  shall
take such  action as shall be  reasonably  requested  by the  Warrantholders  to
effect such transfer.

          3.03  Registration  Rights.  This  Warrant and the Warrant  Shares are
entitled to the benefits of that certain  Registration  Rights Agreement of even
date herewith,  the terms and provisions of which are hereby incorporated herein
by reference.


                                   ARTICLE IV

                             ANTIDILUTION PROVISIONS


          4.01  Adjustments.  The  number of  shares  of Common  Stock and other
securities  purchasable  under this Warrant shall be subject to adjustment  from
time to time as provided in this Article IV.

          4.02 Effect of "Splitups" and Stock Dividends.  In case at any time or
from  time  to  time  the   Corporation   shall   subdivide   as  a  whole,   by
reclassification,  by the  issuance  of a stock  dividend  on the  Common  Stock
payable in Common Stock, or otherwise, the number of shares of Common Stock then
outstanding into a greater number of shares of Common Stock, with or without par
value,  the number of shares of Common  Stock which may be  purchased  hereunder
shall be increased proportionately.  The issuance of such a stock dividend shall
be  treated  as a  subdivision  of the whole  number  of shares of Common  Stock
outstanding  immediately prior to such dividend into a number of shares equal to
such whole number of shares so outstanding plus the number of shares issued as a
stock dividend.

          4.03 Effect of Certain Dividends.  In case on any date the Corporation
makes a  distribution  to  holders  of its  Common  Stock  of  evidences  of its
indebtedness or assets (including  without limitation any such distribution made
in connection  with a  consolidation  or merger in which the  Corporation is the
surviving corporation, but excluding one cash dividend per fiscal quarter of the
Corporation  which  dividend shall not exceed an amount per share equal to 1.25%
of the Current  Market Price on the date such dividend is declared),  the number
of shares of Common Stock theretofore purchasable hereunder shall be adjusted as
at the close of business on said date to a number  determined by multiplying the
number of shares theretofore  purchasable hereunder by a fraction, the numerator
of which shall be the lesser of the Current  Market  Price or Exercise  Price at
such date and the denominator of which shall be an amount equal to the lesser of
such Current Market Price or Exercise  Price,  less the fair market value of the
portion of the  evidences  of  indebtedness  or assets so to be  distributed  in
respect of one share of Common Stock.

          4.04 Effect of Merger;  Consolidation;  Etc.  In case the  Corporation
shall, while this Warrant remains outstanding, enter into any consolidation with
or  merger  into  any  other  corporation  wherein  the  Corporation  is not the
surviving  corporation,  or wherein  securities of a corporation  other than the
Corporation are  distributable to holders of Common Stock, or sell or convey its
property as an entirety or substantially as an entirety,  and in connection with
such  consolidation,  merger,  sale or  conveyance,  shares  of  stock  or other
securities  shall be issuable or  deliverable  in exchange for the Common Stock,
then, as a condition of such consolidation,  merger, sale or conveyance,  lawful
and adequate  provision  shall be made whereby the holder of this Warrant  shall
thereafter  be  entitled to  purchase  pursuant to this  Warrant (in lieu of the
number of shares of Common Stock which such holder  would have been  entitled to
purchase  immediately prior to such  consolidation,  merger, sale or conveyance)
the shares of stock or other securities to which such number of shares of Common
Stock would have been entitled at the time of such  consolidation,  merger, sale
or  conveyance,  at an aggregate  purchase  price equal to that which would have
been  payable if such  number of shares of Common  Stock had been  purchased  by
exercise  of this  Warrant  immediately  prior  thereto.  In  case  of any  such
consolidation,  merger, sale or conveyance,  appropriate provision shall be made
with respect to the rights and interests  thereafter of the holders of Warrants,
to the end that all the provisions of the Warrants (including without limitation
the provisions of this Article IV) shall thereafter be applicable,  as nearly as
practicable,  to such stock or other securities thereafter  deliverable upon the
exercise  of  the  Warrants.   The   Corporation   shall  not  effect  any  such
consolidation, merger, sale or conveyance unless prior to or simultaneously with
the  consummation   thereof  the  successor   corporation  (if  other  than  the
Corporation)  resulting  from such  consolidation  or merger  or  purchasing  or
acquiring such assets shall assume by written instrument, executed and mailed or
delivered to each holder of Warrants,  the  obligation to deliver to such holder
such shares of stock,  securities or assets as, in accordance with the foregoing
provisions,  such  Warrantholder  may be entitled to receive,  which  instrument
shall contain the express  assumption by such  successor  corporation of the due
and punctual performance and observance of every provision of this Warrant to be
performed and observed by the Corporation and of all liabilities and obligations
of the  Corporation  hereunder.  Nothing in this  Section  4.04 shall impair any
otherwise  available right of a Warrantholder to exercise this Warrant,  whether
pursuant to Section 4.06 or otherwise.

          4.05  Reorganization  or  Reclassification.  In  case  of any  capital
reorganization or any  reclassification  of the capital stock of the Corporation
(except as provided in Section  4.02) while this  Warrant  remains  outstanding,
then, as a condition of such capital reorganization or reclassification,  lawful
and adequate  provision  shall be made whereby the holder of this Warrant  shall
thereafter  be  entitled to  purchase  pursuant to this  Warrant (in lieu of the
number of  shares  of Common  Stock  specified  in the first  paragraph  of this
Warrant which such holder would have been entitled to purchase immediately prior
to such reorganization or reclassification)  the shares of stock of any class or
classes or other securities or property to which such number of shares of Common
Stock  would  have  been  entitled  at  the  time  of  such   reorganization  or
reclassification,  at an aggregate purchase price equal to that which would have
been  payable if such number of shares of Common  Stock  specified  in the first
paragraph  of  this  Warrant  had  been  purchased  immediately  prior  to  such
reorganization or reclassification.  In case of any such capital  reorganization
or  reclassification,  appropriate  provision  shall be made with respect to the
rights and interests thereafter of the holders of the Warrants,  to the end that
all the provisions of the Warrants  (including without limitation the provisions
of this Article IV) shall thereafter be applicable, as nearly as practicable, to
such stock or other  securities  or  property  thereafter  deliverable  upon the
exercise of the Warrants.

          4.06 Effect of Below  Market  Issuances.  (a) In case the  Corporation
shall at any time issue additional shares of Common Stock, or rights, options or
warrants  containing  the right to  subscribe  for or purchase  shares of Common
Stock  or  securities   convertible   into  or  exchangeable  for  Common  Stock
("Convertible  Securities") for a price per share of Common Stock in the case of
the  issuance  of  Common  Stock,  or for a price  per  share  of  Common  Stock
deliverable upon exercise, conversion or exchange of such securities in the case
of Convertible Securities,  less than the then Current Market Price per share of
Common  Stock on the date  the  Corporation  fixed  the  offering  price of such
additional shares, the number of Warrant Shares thereafter  purchasable upon the
exercise  of each  Warrant  shall be  determined  by  multiplying  the number of
Warrant  Shares  theretofore  purchasable  upon  exercise  of this  Warrant by a
fraction,  of which the numerator  shall be the number of shares of Common Stock
outstanding  on such date plus the number of  additional  shares of Common Stock
offered for  subscription,  exchange or purchase,  and of which the  denominator
shall be the number of shares of Common Stock  outstanding on such date plus the
number  of shares  which the  aggregate  offering  price of the total  number of
shares of Common  Stock so offered  would  purchase at the then  Current  Market
Price per share of Common Stock at such date. For purposes of this Section 4.06,
if  the   Corporation   issues  Common  Stock  or  Convertible   Securities  for
consideration  other than  cash,  then the fair  value of the  consideration  so
received  shall be  determined  in good faith by the Board of  Directors  of the
Corporation,  provided that if such  determination is objected to by the holders
of Warrants  representing a Majority of the Warrant Shares,  such  determination
shall be made by a  qualified  independent  appraiser  mutually  selected by the
Board of  Directors  and a  majority  in  interest  of the  Warrantholders.  The
consideration  for  any  Common  Stock  issuable  pursuant  to  any  Convertible
Securities shall be the consideration  received or receivable by the Corporation
for issuing  such  Convertible  Securities,  plus the  additional  consideration
payable  upon the  exercise of such  Convertible  Securities.  The sale or other
disposition  of  any  Common  Stock  owned  or  held  by or for  account  of the
Corporation  shall  be  deemed  an  issuance  thereof  by the  Corporation.  The
provisions  of this  Section 4.06 shall not apply to the issuance of or exercise
of Excluded Securities.

          (b) If, at any time after any adjustment shall have been made pursuant
to this Section 4.06 on the basis of the issuance of Convertible Securities:

                    (1) such  Convertible  Securities or a portion thereof shall
          expire and shall not have been exercised, or

                    (2) the  consideration per share for which additional shares
          of Common Stock are issuable  pursuant to such Convertible  Securities
          shall be increased  solely by virtue of provisions  therein  contained
          for an  automatic  increase in such  consideration  per share upon the
          arrival of a specified  date or the  happening  of a specified  event,
          such  previous  adjustment  shall be  rescinded  and  annulled and the
          additional  shares  of Common  Stock  which  were  deemed to have been
          issued  by  virtue  of the  computation  made in  connection  with the
          adjustment so rescinded and annulled shall no longer be deemed to have
          been issued by virtue of such computation.  Thereupon, a recomputation
          shall be made of the  effect  of such  Convertible  Securities  on the
          basis of

                    (3)  treating  the  number  of  additional  shares of Common
          Stock, if any, theretofore actually issued or possible pursuant to the
          previous  exercise  of such  Convertible  Securities,  as having  been
          issued  on the  date or  dates  of such  issuance  as  determined  for
          purposes  of  such  previous  adjustment  and  for  the  consideration
          actually received and receivable therefor, and

                  (4) treating any such Convertible Securities which then remain
         outstanding as having been granted or issued immediately after the time
         of such  increase  of the  consideration  per share for such  shares of
         Common Stock as are issuable under such Convertible Securities,

and, if and to the extent called for by the foregoing provisions of this Article
IV on the basis  aforesaid,  a new  adjustment of the number of shares  issuable
upon the exercise hereof shall be made, which new adjustment shall supersede the
previous adjustment so rescinded and annulled.

          4.07 No Dilution Generally. The Corporation shall not take any action,
directly or indirectly,  to avoid or seek to avoid the observance or performance
of any of the terms of this  Article  IV,  but shall at all times in good  faith
assist in carrying out all of such terms and in the taking of all such action as
may be necessary, appropriate or desirable in order to protect the rights of the
holder of this Warrant, it being the intent of this Section 4.07 that the holder
of this Warrant  shall at all times after the date hereof be entitled to receive
upon exercise of this Warrant no less than the same  proportionate  ownership of
all of the outstanding  shares of the capital stock and other  securities of the
Corporation  (including without limitation  proportionate  voting rights) as the
holder of this Warrant  would  receive if such  exercise  rights would have been
exercised on the date hereof.

          4.08  Statement of  Adjustment  of Unit.  Upon each  adjustment of the
number of shares of Common Stock purchasable hereunder,  and in the event of any
change in the  rights of the holder of this  Warrant  by reason of other  events
herein set forth,  then and in each case,  the  Corporation  will  promptly  (i)
prepare a  schedule  setting  forth the  adjusted  number of shares  purchasable
hereunder, or specifying the other shares of stock, securities or assets and the
amount  thereof  receivable  as a result of such  change in rights,  and setting
forth in reasonable  detail the method of  calculation  and the facts upon which
such  calculation  is based,  and (ii)  promptly  mail a copy of such  schedule,
certified as correct by the Chief  Executive or Chief  Financial  Officer of the
Corporation.

          4.09  Determinations by the Board of Directors.  All determinations by
the Board of Directors of the  Corporation  under the provisions of this Warrant
shall be made in good faith with due  regard to the  interests  of the holder of
this Warrant and in accordance with good financial practice,  and all valuations
made by the  Board of  Directors  of the  Corporation  under  the  terms of this
Warrant  must be made with due regard to any  market  quotations  of  securities
involved in, or related to, the subject of such valuation.

          4.10  Notifications  by the  Corporation.  In  case  at any  time  the
Corporation proposes

                    (i) to pay any  dividend  payable  in stock (of any class or
          classes) or in securities  convertible into or exchangeable for shares
          of Common Stock or in rights or options to  subscribe  for or purchase
          shares of Common Stock or convertible or exchangeable securities or to
          make any  distribution  (other  than cash  dividends  in an amount per
          share  not  greater  than the next  preceding  cash  dividend)  to the
          holders of the Common Stock,

                    (ii) to make  an  offer  for  subscription  pro  rata to the
          holders of Common Stock of additional  shares of stock of any class or
          other rights or to grant to the holders of Common Stock  generally any
          rights or options,

                    (iii)  to  effect  any  stock  split,  stock   distribution,
          reorganization  or  reclassification  of the Corporation or any of the
          capital stock of the  Corporation,  or  consolidation or merger of the
          Corporation  with, or sale or transfer of all or substantially  all of
          its assets to, another corporation, or

                    (iv) to  effect  a  voluntary  or  involuntary  dissolution,
          liquidation or windingup of the Corporation,

then, in any one or more such cases,  the Corporation  shall give written notice
to the  registered  holder of this Warrant of the date on which (A) the transfer
books  of the  Corporation  shall  close or a  record  shall  be taken  for such
dividend,  distribution,  subscription  rights or grant,  (B) a record  shall be
taken to determine stockholders entitled to notice of and to vote at any meeting
of  stockholders  at which any such proposed  reorganization,  reclassification,
consolidation,  merger, sale or transfer of assets, dissolution,  liquidation or
windingup is to be  considered,  or (C) such  reorganization,  reclassification,
consolidation,  merger, sale or transfer of assets, dissolution,  liquidation or
windingup  shall take place,  as the case may be. Such notice shall also specify
the date as of which the holders of Common Stock of record shall  participate in
such dividend, distribution or subscription rights, or shall be entitled to vote
on or exchange their Common Stock for  securities or other property  deliverable
upon  such  reorganization,  reclassification,  consolidation,  merger,  sale or
transfer of assets, dissolution,  liquidation or winding up, as the case may be.
Such  written  notice  shall be given not less than 20 days and not more than 90
days prior to such date on which the  transfer  books of the  Corporation  shall
close or a record shall be taken or any event shall  occur,  as the case may be,
and such  notice  may state that any such  action  will be taken only if certain
events  specified in such notice (such as the clearing of proxy  material by the
Commission or an affirmative vote of stockholders) occur prior thereto.


                                    ARTICLE V

                               CERTAIN DEFINITIONS


          For all  purposes  of  this  Warrant,  unless  the  context  otherwise
requires, the following terms shall have the following respective meanings:

          "Act": the Securities Act of 1933, as amended,  or any similar Federal
statute, and the rules and regulations of the Commission promulgated thereunder,
all as the same shall be in effect at the time.

          "Andlinger XIII Warrantholder": Andlinger Capital XIII LLC.

          "Commission":  the  Securities  and Exchange  Commission  or any other
Federal agency then administering the Act.

          "Common Stock":  the Corporation's  authorized Common Stock, par value
$.01 per  share,  and any other  securities  as to which  this  Warrant  becomes
exercisable  pursuant to Article IV,  including the stock of the  Corporation of
any class  thereafter  authorized which ranks, or is entitled to a participation
as to assets or dividends substantially on a parity, with the Common Stock.

          "Corporation":  Galileo Corporation,  a Delaware corporation,  and any
other  corporation  assuming  or  required  to assume the  Warrants  pursuant to
Section 4.04.

          "Current  Market  Price":  per share of Common Stock at any date:  the
average of the daily market prices over a period of 20 consecutive business days
before such date.  The market price for each such business day shall be the last
sale price on such day on the principal  securities exchange on which the Common
Stock is then listed or admitted to trading,  or, if no sale takes place on such
day on any such  exchange,  the average of the  closing bid and asked  prices on
such day as officially  quoted on any such  exchange,  or if the Common Stock is
not then listed or admitted to trading on any stock  exchange,  the market price
for each such  business  day shall be the  average of the  closing bid and asked
prices on such day in the over--the--counter market, as reported through NASDAQ.
If and so long as there shall be no exchange  or  over--the--counter  market for
the Common Stock during the 20--day  period prior on which Current  Market Price
is to be  determined,  the Current Market Price shall be determined by the Board
of Directors in good faith and on a reasonable basis; provided, however, that in
case the Corporation  makes an underwritten  public offering of shares of Common
Stock,  for  purposes  of the  adjustment,  if any,  pursuant to Article IV, the
Current Market Price with respect to such shares shall be deemed to be the price
to the public shown in the final  prospectus used in connection with such public
offering.

          "equity security" or "equity  securities":  as such term is defined by
the  Exchange Act or the rules and  regulations  of the  Commission  promulgated
thereunder.

          "Exchange  Act": the Securities  Exchange Act of 1934, as amended,  or
any similar  Federal  statute,  and the rules and  regulations of the Commission
promulgated thereunder, all as the same shall be in effect at the time.

          "Excluded  Securities":  Common Stock or other  securities  issued (i)
pursuant  to the  exercise  of  the  Warrants,  (ii)  pursuant  to a  bona  fide
underwritten public offering registered under the Securities Act, (iii) pursuant
to the  exercise of options or rights  granted or  available to employees of the
Corporation  pursuant to a Corporation  stock option plan or stock purchase plan
in  existence  on  December  22,  1998  or  thereafter   duly  approved  by  the
stockholders of the  Corporation and (iv) pursuant to any acquisition  agreement
or plan of merger or  consolidation  that  provides for the  acquisition  by the
Corporation  of  capital  stock or assets if either  (A) the number of shares of
Common  Stock  issued  pursuant  to this  clause  (iv) in any given  acquisition
transaction  does not  exceed  20% of the  number  of  shares  of  Common  Stock
outstanding  immediately  prior to giving  effect to such  issuance,  or (B) the
issuance  of Common  Stock in such  acquisition  transaction  is approved by the
holders of a majority of the outstanding Common Stock of the Corporation.

          "Original Issuance Date": _____________, 1998.

          "Outstanding":  when used with  reference  to the Common  Stock at any
date,  all issued  shares of the Common Stock at such date,  except  shares then
held in the treasury of the Corporation.

          "person":   any   individual,    corporation,    partnership,   trust,
unincorporated  organization and any government,  and any political subdivision,
instrumentality or agency thereof.

          "Warrant Office": see Section 2.01.

          "Warrant  Shares":  the  shares  of the  Common  Stock  and any  other
securities  purchasable or purchased by the Warrantholders  upon the exercise of
the Warrants.

          "Warrantholder": the registered holder of a Warrant or Warrants or any
related Warrant Shares.

          "Warrants":  the Warrants  (of which this  Warrant is one)  originally
issued by the  Corporation  on the Original  Issuance  Date,  and evidencing the
right  initially to purchase an aggregate of 2,000,000  (Two Million)  shares of
the Common Stock of the  Corporation  at an initial  exercise price of $1.50 per
share  (subject  to  adjustment),  and  all  warrants  issued  in  substitution,
combination or subdivision of any thereof.


                                   ARTICLE VI

                      CERTAIN COVENANTS OF THE CORPORATION


The Corporation covenants and agrees that:

                    (a) it will  reserve  and set apart  and have at all  times,
          free from  preemptive  rights,  a number of shares of  authorized  but
          unissued Common Stock or other securities or property deliverable upon
          the  exercise of the Warrants  sufficient  to enable it at any time to
          fulfill all its obligations thereunder;

                    (b) if any  shares of the Common  Stock or other  securities
          required to be reserved  for the  purposes of exercise of this Warrant
          require  registration  with or approval of any governmental  authority
          under  any  Federal  law  (other  than the Act) or under any state law
          before such shares or other  securities may be issued upon exercise of
          this Warrant, the Corporation will at its expense, as expeditiously as
          possible,  take  reasonable  steps  to  cause  such  shares  or  other
          securities to be duly registered or approved, as the case may be;

                    (c) if and so long as the  Common  Stock  is  listed  on any
          securities  exchange (as defined in the Exchange Act), it will, at its
          expense,  obtain and maintain  the approval for listing upon  official
          notice of issuance  of all shares of Common  Stock  issuable  upon the
          exercise of the  Warrants at the time  outstanding  and  maintain  the
          listing of such shares after their issuance;  and the Corporation will
          so list on such  securities  exchange  and  will  register  under  the
          Exchange  Act (or  any  similar  statute  then in  effect),  and  will
          maintain  such listing of, any other  securities  that at any time are
          issuable upon  exercise of the Warrants if, and at the time that,  any
          securities  of the same  class  shall  be  listed  on such  securities
          exchange by the Corporation;

                    (d) this  Warrant  shall  be  binding  upon any  corporation
          succeeding to the Corporation by merger,  consolidation or acquisition
          of all or substantially all of the Corporation's  property and assets;
          and

                    (e) the exercise of this Warrant and the  performance of the
          Corporation's  obligations  hereunder shall be subject to and shall be
          in compliance with all applicable federal and state securities laws.


                                   ARTICLE VII

                                  MISCELLANEOUS


          7.01 Entire  Agreement.  This Warrant  contains  the entire  agreement
between the  Warrantholder  and the Corporation  with respect to the purchase of
the  Warrant  Shares  and the  related  transactions  and  supersedes  all prior
arrangements or understandings with respect thereto.

          7.02 Governing Law. This Warrant shall be governed by and construed in
accordance with the internal laws of the State of Delaware.

          7.03 Waiver and  Amendment.  Any term or provision of this Warrant may
be waived at any time by the party which is entitled to the benefits thereof and
any term or provision of this Warrant may be amended or supplemented at any time
by agreement of the Warrantholder and the Corporation, except that any waiver of
any term or condition, or any amendment or supplementation, of this Warrant must
be in writing.  A waiver of any breach or failure to enforce any of the terms or
conditions of this Warrant shall not in any way affect, limit or waive a party's
rights hereunder at any time to enforce strict compliance  thereafter with every
term or condition of this Warrant.

          7.04  Illegality.  In the event that any one or more of the provisions
contained  in this  Warrant  shall  be  determined  to be  invalid,  illegal  or
unenforceable  in any  respect  for  any  reason,  the  validity,  legality  and
enforceability  of any such  provision  in any other  respect and the  remaining
provisions  of this Warrant shall not, at the election of the party for whom the
benefit of the provision exists, be in any way impaired.

          7.05 Filing of Warrant.  A copy of this Warrant  shall be filed in the
minute book and among the records of the Corporation.

          7.06 Notice.  Any notice or other document required or permitted to be
given or  delivered  to the  Warrantholders  shall be  delivered  at, or sent by
certified or  registered  mail to, each such holder at the last address shown on
the  books  of  the  Corporation  maintained  at  the  Warrant  Office  for  the
registration and transfer of the Warrants or at any more recent address of which
any Warrantholder shall have notified the Corporation in writing.  Any notice or
other  document  required or  permitted  to be given or  delivered to holders of
record of outstanding Warrant Shares shall be delivered at, or sent by certified
or  registered  mail to, each such holder at such  holder's  address as the same
appears on the stock records of the  Corporation.  Any notice or other  document
required or permitted to be given or  delivered to the  Corporation,  other than
such notice or documents  required to be delivered to the Warrant Office,  shall
be delivered at, or sent by certified or  registered  mail to, the office of the
Corporation  at Galileo Park,  P.O. Box 550,  Sturbridge,  Massachusetts  01566,
Attention:  Corporate  Secretary or such other  address  within the  continental
United States of America as shall have been furnished by the  Corporation to the
Warrantholders and the holders of record of Warrant Shares.

          7.07 Loss,  Destruction,  Etc. of  Warrants.  Upon receipt of evidence
satisfactory to the Corporation of the loss, theft, mutilation or destruction of
any  Warrant,  and in the  case of any such  loss,  theft  or  destruction  upon
delivery of a bond of indemnity  in such form and amount as shall be  reasonably
satisfactory  to the  Corporation,  or in the  event  of  such  mutilation  upon
surrender and cancellation of the Warrant, the Corporation will make and deliver
a new  Warrant,  of like  tenor,  in lieu of such  lost,  stolen,  destroyed  or
mutilated  Warrant;  provided,  however,  that any Andlinger XIII  Warrantholder
shall not be required to provide any such bond or indemnity.  Any warrant issued
under the  provisions of this Section 7.07 in lieu of any Warrant  alleged to be
lost, destroyed or stolen, or in lieu of any mutilated Warrant, shall constitute
an original contractual obligation on the part of the Corporation.

          7.08  Certain  Expenses.   Any  Warrantholder  shall  be  entitled  to
reimbursement from the Corporation of such Warrantholder's  reasonable legal and
other  expenses in  enforcing  its rights  hereunder  against  the  Corporation,
provided and to the extent that the Corporation  shall have been determined by a
final order of a court of  appropriate  jurisdiction  to have  defaulted  in its
obligations under or in connection with this Warrant.

          IN WITNESS  WHEREOF,  the  Corporation  has caused this  Warrant to be
executed  on its  behalf  and its  corporate  seal to be  hereunto  affixed  and
attested by its officers thereunto duly authorized.

Dated:  ____________, 1998

                                         GALILEO CORPORATION



                                          By       _____________________________
                                                   Name: W. Kip Speyer
                                                   Title: President


Attest:



_____________________

Secretary


(Corporate Seal)


<PAGE>

                                 EXERCISE NOTICE



          The undersigned, the holder of the foregoing Warrant, hereby elects to
exercise  rights  represented  by said Warrant for, and to purchase  thereunder,
_______  shares of the Common Stock  covered by said Warrant and herewith  makes
payment in full therefor of $________ by check (subject to  collection)  payable
to the order of the  Corporation  in the amount of $_______ , and  requests  (i)
that certificates for such shares (and any securities or other property issuable
upon such exercise) be issued in the name of and delivered to ____________ whose
address is  _________________  and (ii) if such shares  shall not include all of
the shares  issuable  as provided  in said  Warrant,  that a new Warrant of like
tenor and date for the balance of the shares issuable thereunder be delivered to
the undersigned.



                                            ____________________________________
                                                      Signature Guaranteed:






<PAGE>


                                   ASSIGNMENT




          FOR  VALUE  RECEIVED,   the  undersigned  hereby  sells,  assigns  and
transfers  unto  _____________  the  rights  to  __________  represented  by the
foregoing Warrant of [ ], and appoints  ____________  attorney to transfer said
rights on the books of said corporation,  with full power of substitution in the
premises.



                                                   _____________________________
                                                       Signature Guaranteed:



Dated:



<PAGE>

                                                     
                                                                       Exhibit B

                          REGISTRATION RIGHTS AGREEMENT

          This REGISTRATION RIGHTS AGREEMENT (this "Agreement"),  dated December
22,  1998,  is  entered  into  by and  among  GALILEO  CORPORATION,  a  Delaware
corporation (the "Company"),  ANDLINGER CAPITAL XIII LLC, a Connecticut  limited
liability company  ("Investor"),  JOHN F. BLAIS, JR. ("Blais") and W. KIP SPEYER
("Speyer").  Investor,  Blais and Speyer are sometimes  referred to  hereinafter
individually as a "Stockholder" and collectively as the "Stockholders."

                                   Background

          The Company and  Investor  are  entering  into a  Securities  Purchase
Agreement and the Company and the Stockholders are entering into a Stockholders'
Agreement,  each dated the date hereof.  In connection with the entry into those
agreements,  and as an  inducement  to  the  Stockholders  to  enter  into  such
agreements,  the Company is granting the  registration  rights  provided in this
Agreement.

                                      Terms

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

          1. Definitions

          As used in this Agreement,  the following capitalized terms shall have
the following meanings:

          "Affiliate"  has the  meaning  set  forth in Rule  12b-2 of the  Rules
promulgated under the Securities Exchange Act of 1934, as amended.

          "Common  Stock" means the common stock,  par value $.01 per share,  of
the Company.

          "Permitted  Transferee"  shall have the meaning given such term in the
Stockholders'  Agreement  for so long as that  agreement is in effect and,  when
such agreement is no longer in effect, any permitted transferee.

          "Person"  means  a  natural  person,  partnership,  limited  liability
company,  corporation,  trust or unincorporated organization, or a government or
agency or political subdivision thereof.

          "Registrable  Securities" shall mean any Common Stock issued to and or
owned by  Investor  or any of its  Affiliates,  by Blais  or  Speyer,  or by the
Permitted Transferees of any of the foregoing, and any Common Stock which may be
issued or  distributed  in respect of such  Common  Stock by way of  conversion,
stock  dividend or stock  split,  or other  distribution,  recapitalization,  or
reclassification. As to any particular Registrable Securities, once issued, such
securities  shall cease to be  Registrable  Securities  when (i) a  registration
statement  with  respect  to the  sale  of such  securities  shall  have  become
effective under the Securities Act and such securities  shall have been disposed
of in accordance with such  registration  statement,  (ii) such securities shall
have  been  distributed  to the  public  pursuant  to Rule  144 or 144A  (or any
successor provisions) under the Securities Act, (iii) such securities shall have
been  otherwise  transferred,  new  certificates  for them not  bearing a legend
restricting  further  transfer  shall have been  delivered  by the  Company  and
subsequent  disposition of such  securities  shall not require  registration  or
qualification  under the Securities Act or any state  securities or blue sky law
then in force, or (iv) such securities shall have ceased to be outstanding.

          "SEC" means the Securities and Exchange Commission.

          "Securities  Act" means the  Securities  Act of 1933,  as amended from
time to time.

          "Stockholders'  Agreement" means the Stockholders' Agreement dated the
date hereof among the Company, Investor, Blais and Speyer.

          "Stock Purchase  Agreement"  means the Securities  Purchase  Agreement
dated the date hereof between the Company and Investor.

          "underwritten   registration  or   "underwritten   offering"  means  a
registration  in which  securities of the Company are sold to an underwriter for
reoffering to the public.

          2. Demand Registrations

          (a)  Upon the  written  request  of (i)  Investor,  (ii)  Stockholders
holding  shares of Common  Stock  representing  at least 50% of the  outstanding
shares of Common Stock held by the Stockholders (the "Majority Stockholders") or
(iii)  Blais or Speyer so long as such  request of Blais or Speyer is made after
December 31, 2001 (any of the foregoing, a "Requesting Stockholder"), requesting
that the Company effect the registration under the Securities Act of all or part
of the particular Requesting Stockholder's Registrable Securities and specifying
the intended method of disposition  thereof,  the Company will, as expeditiously
as  possible,  use its  best  efforts  to  effect  the  registration  under  the
Securities Act of (i) the Registrable  Securities  which the Company has been so
requested  to  register  by  the  Requesting  Stockholder  so as to  permit  the
disposition (in accordance with the intended method thereof as aforesaid) of the
Registrable Securities so to be registered;  provided, however, that the Company
may delay the filing of the  registration  statement  for up to a single  90-day
period if the Board  determines  that such  filing  should  not be made due to a
valid  need  not to  disclose  confidential  information  or  because  it  would
materially  interfere  with  any  material  financing,  acquisition,   corporate
reorganization, or merger involving the Company. So long as the Company does not
breach any of its obligations in respect of the demand  registration (other than
a breach which would not adversely affect the Requesting  Stockholder's  rights)
with respect to each holder,  the Company  shall only be required to comply with
three (3)  requests by Investor  and/or the  Majority  Stockholders  and one (1)
request by each of Blais and Speyer for demand  registration.  The Company shall
give written notice to all Stockholders other than the Requesting Stockholder of
its intention to file a  registration  statement  pursuant to this  paragraph at
least 30 days prior to the filing  thereof,  and if requested in writing by such
other Stockholders within 30 days after receipt of such notice, the Company will
include in such  registration  statement  any shares of Common Stock held by the
other Stockholders. All of the Stockholders whose shares of Common Stock will be
included in a registration  statement (whether a Requesting Stockholder or other
Stockholder  electing to  participate)  pursuant to any "demand" or  "piggyback"
registration  under this Agreement are referred to herein as the  "Participating
Stockholders."

          (b) A  registration  requested  pursuant  to Section  2(a) will not be
deemed to have been effected unless it has become effective;  provided, that if,
within 135 days after it has  become  effective,  the  offering  of  Registrable
Securities  pursuant to such  registration is interfered with by any stop order,
injunction,  or other  order  or  requirement  of the SEC or other  governmental
agency or court prior to the sale of all the Registrable  Securities  registered
thereunder,  such  registration  will  be  deemed  not to  have  been  effected.
Notwithstanding the preceding sentence, if any such stop order is rescinded, the
effective  period shall  continue  upon such  rescission  and be extended by the
number of days by which such stop order delayed the filing.

          (c) Each  requested  registration  shall involve either a firm or best
efforts  underwritten  public offering.  The Requesting  Stockholder causing the
registration  statement  shall  have  the  right to  select  an  underwriter  or
underwriters of nationally  recognized  standing  satisfactory to the Company to
administer the offering.

          (d) If the managing  underwriter in a requested  registration  advises
the Company in writing that, in its opinion,  the number of securities requested
to be included in such registration  (including  securities of the Company which
are not Registrable  Securities) exceeds the number (the "Maximum Amount") which
can be sold in such  offering  so as to be likely to have an  adverse  effect on
such offering as contemplated by the Requesting Stockholder (including the price
at which the  Requesting  Stockholder  proposes  to sell such  securities),  the
registration  statement shall only include shares of the Requesting  Stockholder
and, to the extent such shares are less than the Maximum  Amount,  shares of the
other Participating  Stockholders in amounts to be allocated among them based on
the relative  number of Registrable  Securities  then held by them. In the event
that the number of  Registrable  Securities  requested  to be  included  in such
registration exceeds the Maximum Amount, the Requesting Stockholder may elect to
withdraw the registration  request and such registration  statement shall not be
deemed to have been effected.

          (e) The Company shall not at any time grant any other person rights to
register  securities of the Company on terms which could restrict in any way the
ability of the Company fully to perform its obligations to the holders  pursuant
to this Section.

          3. Piggyback Registrations.

          (a) If the  Company  at any time  after the date  hereof  proposes  to
register its Common Stock under the  Securities  Act (other than a  registration
statement  on Forms S-8 or S-4 or any  similar  or  successor  form or any other
registration  statement  relating  to  an  exchange  offer  or  an  offering  of
securities solely to the Company's  employees or security  holders),  whether or
not for sale for its own account,  pursuant to a registration statement on which
it is  permissible  to register  Registrable  Securities  for sale to the public
under the  Securities  Act,  it will each such time give  written  notice to all
Stockholders  of its  intention  to do so at least 30 days  prior to the date of
filing the proposed  registration  statement  and of such  Stockholder's  rights
hereunder.  Upon the written request of a Stockholder  made within 25 days after
the receipt of any such notice  (which  request  shall  specify the  Registrable
Securities intended to be disposed of by such Stockholder), the Company will use
its reasonable best efforts to effect the registration  under the Securities Act
of all  Registrable  Securities  which  the  Company  has been so  requested  to
register. If a registration  requested involves an underwritten public offering,
a Participating Stockholder may elect, in writing prior to the effective date of
the registration  statement filed in connection with such  registration,  not to
register such securities in connection with such  registration.  The Company may
terminate its efforts to register  such  securities,  including the  Registrable
Securities, at any time without liability to any Participating Stockholder.

          (b) If a  registration  involves  an  underwritten  offering  and  the
managing  underwriter  advises the Company in writing that, in its opinion,  the
amount of  securities  requested  to be  included  in such  registration  by all
selling holders exceeds the amount which can be sold in such offering,  so as to
be likely to have an adverse  effect on such  offering  as  contemplated  by the
Company  (including  the  price at  which  the  Company  proposes  to sell  such
securities),  then the Company will include in such registration (i) first, 100%
of either (A) the Common Stock the Company  proposes to sell on a primary  basis
or (B) the Common  Stock a holder  proposes  to sell upon  exercise  of "demand"
registration  rights  pursuant to Section 2, (ii)  second,  to the extent of the
amount of Registrable  Securities  requested to be included in such registration
which, in the opinion of such managing  underwriter,  can be sold without having
the adverse effect referred to above, the amount of Registrable Securities which
the holders have requested to be included in such  registration,  such amount to
be allocated pro rata among holders exercising  "piggyback"  registration rights
on the basis of the relative  number of shares of  securities  then held by each
such holder (provided,  that any securities thereby allocated to any such holder
that  exceed such  holder's  request  will be  reallocated  among the  remaining
requesting holders in like manner).

          4. Registration Expenses.

          The Company shall be responsible for any and all expenses  incident to
performance  of or  compliance  with the  registration  rights set forth in this
Agreement,  including,  without  limitation,  (i) all SEC and stock  exchange or
National Association of Securities Dealers,  Inc.  registration and filing fees,
(ii)  all  fees and  expenses  of  complying  with  securities  or blue sky laws
(including fees and  disbursements of counsel for the underwriters in connection
with blue sky  qualifications),  (iii) all  printing,  messenger,  and  delivery
expenses,  (iv) all fees and expenses incurred in connection with the listing of
the  securities on any securities  exchange or The Nasdaq Stock Market,  (v) the
fees and disbursements of counsel for the Company and of its independent  public
accountants,  including the expenses of any special audits and/or "cold comfort"
letters  required by or incident to such  performance and  compliance,  (vi) the
reasonable fees and  disbursements of one counsel selected by the  Participating
Stockholders  to represent them in connection with each such  registration,  and
(vii) any fees and disbursements of underwriters customarily paid by the issuers
or  sellers of  securities,  including  liability  insurance  if the  Company so
desires, and the reasonable fees and expenses of any special experts retained in
connection with the requested registration, but excluding underwriting discounts
and commissions and transfer taxes, if any.

          5. Registration Procedures.

          If and  whenever  the Company is  required to use its best  efforts to
effect  or cause  the  registration  of any  Registrable  Securities  under  the
Securities Act as provided in this Agreement,  the Company will as expeditiously
as possible:

          (a)  prepare  and,  in any event  within 60 days  after the end of the
period  within  which all other  requests for  registration  may be given to the
Company,  file  with  the SEC a  registration  statement  with  respect  to such
Registrable  Securities  and use its best  efforts  to cause  such  registration
statement to become effective;

          (b) prepare and file with the SEC such  amendments and  supplements to
such registration  statement and the prospectus used in connection  therewith as
may be necessary to keep such registration  statement effective for a period not
in excess of 135 days and to comply with the  provisions of the  Securities  Act
with respect to the disposition of all securities  covered by such  registration
statement  during  such  period  in  accordance  with the  intended  methods  of
disposition  by the seller or  sellers  thereof  set forth in such  registration
statement;  provided, that before filing a registration statement or prospectus,
or any  amendments  or  supplements  thereto,  the Company  will  furnish to one
counsel  selected  by the holders of a majority  of the  Registrable  Securities
covered by such  registration  statement to represent all holders of Registrable
Securities  covered  by such  registration  statement,  copies of all  documents
proposed  to be filed,  which  documents  will be  subject to the review of such
counsel;

          (c) furnish to each seller of such Registrable  Securities such number
of copies of such  registration  statement and of each  amendment and supplement
thereto  (in each case  including  all  exhibits),  such number of copies of the
prospectus included in such registration  statement  (including each preliminary
prospectus and summary  prospectus),  in conformity with the requirements of the
Securities Act, and such other  documents as such seller may reasonably  request
in order to facilitate  the  disposition of the  Registrable  Securities by such
seller;

          (d) use its best  efforts  to  register  or qualify  such  Registrable
Securities covered by such registration statement under such other securities or
blue sky laws of such jurisdictions  where such registration or qualification is
required  and which seller shall  reasonably  request,  and do any and all other
acts and things  which may be  reasonably  necessary or advisable to enable such
seller to consummate the  disposition in such  jurisdictions  of the Registrable
Securities owned by such seller,  except that the Company shall not for any such
purpose be required to qualify  generally to do business as a foreign Company in
any  jurisdiction  where,  but for the requirements of this clause (d), it would
not be obligated to be so qualified,  to subject  itself to taxation in any such
jurisdiction,  or  to  consent  to  general  service  of  process  in  any  such
jurisdiction;

          (e) use its best efforts to cause such Registrable  Securities covered
by such  registration  statement to be registered with or approved by such other
governmental agencies or authorities as may be necessary to enable the seller or
sellers thereof to consummate the disposition of such Registrable Securities;

          (f) immediately notify the Participating Stockholders at any time when
a prospectus  relating  thereto is required to be delivered under the Securities
Act within the  appropriate  period  mentioned  in clause (b), of the  Company's
becoming aware that the prospectus included in such registration  statement,  as
then in effect,  includes  an untrue  statement  of a material  fact or omits to
state a material  fact  required to be stated  therein or  necessary to make the
statements  therein  not  misleading  in the  light  of the  circumstances  then
existing, and at the request of a Participating Stockholder, prepare and furnish
to such Participating Stockholder a reasonable number of copies of an amended or
supplemental  prospectus as may be necessary so that, as thereafter delivered to
the purchasers of such Registrable Securities, such prospectus shall not include
an untrue statement of a material fact or omit to state a material fact required
to be stated therein or necessary to make the statements  therein not misleading
in the light of the  circumstances  then existing.  If the Board determines that
such amended or supplemental  prospectus should not be prepared and filed due to
a valid need not to disclose  confidential  information  or because either would
materially  interfere  with  any  material  financing,  acquisition,   corporate
reorganization, or merger involving the Company, then the Company shall have the
right,  upon  giving the notice  under  this  Section  5(f),  to  postpone  such
requirement to deliver an amended or supplemental prospectus for a single 60-day
period,  provided, that, (i) the period during which the Company is obligated to
keep the registration  statement  effective under Section 5(b) shall be extended
by the duration of such  postponement and (ii) the Company states in such notice
that it is postponing  its delivery of such amended or  supplemental  prospectus
pursuant to this sentence;

          (g) otherwise use its best efforts to comply with all applicable rules
and regulations of the SEC, and make available to its security holders,  as soon
as reasonably practicable (but not more than 15 months) after the effective date
of the  registration  statement,  an earnings  statement which shall satisfy the
provisions of Section 11(a) of the Securities Act and the rules and  regulations
promulgated thereunder;

          (h) use its best efforts to list such  Registrable  Securities  on any
securities exchange (including without limitation the Nasdaq National Market) on
which the Common Stock is then listed,  if such  Registrable  Securities are not
already so listed and if such listing is then permitted  under the rules of such
exchange,  and to provide a transfer  agent and registrar  for such  Registrable
Securities  covered by such registration  statement not later than the effective
date of such registration statement;

          (i) enter into such customary  agreements  (including an  underwriting
agreement in customary  form) and take such other actions  customarily  taken by
registrants  as sellers  of a majority  of such  Registrable  Securities  or the
underwriters,  if any, reasonably request in order to expedite or facilitate the
disposition of such Registrable Securities;

          (j) use  commercially  reasonable  efforts to obtain a "cold  comfort"
letter or letters from the Company's independent public accountants in customary
form and  covering  matters of the type  customarily  covered by "cold  comfort"
letters as the seller or sellers of a majority  of such  Registrable  Securities
shall reasonably request; and

          (k) make  available for  inspection by any seller of such  Registrable
Securities   covered  by  such  registration   statement,   by  any  underwriter
participating  in any disposition to be effected  pursuant to such  registration
statement and by any attorney,  accountant,  or other agent retained by any such
seller or any such  underwriter,  all  pertinent  financial  and other  records,
pertinent corporate  documents,  and properties of the Company, and cause all of
the  Company's  officers,  directors,  and  employees to supply all  information
reasonably requested by any such seller, underwriter,  attorney,  accountant, or
agent in connection with such registration statement.

          As a condition  to the  Company's  obligation  under this Section 5 to
cause a registration  statement or an amendment to be filed,  or Common Stock to
be included in the registration statement,  each Participating Stockholder shall
provide such information and execute such documents  (including any agreement or
undertaking relating to expenses, indemnification or other matters to the extent
consistent  with the provisions of this Agreement) as may reasonably be required
by the Company in connection with such registration. In addition,  Participating
Stockholders  shall  provide  counsel for the Company  with such  documents  and
information as may be reasonably requested by counsel for the Company.

          6. Indemnification.

          (a) In the event of any  registration of any securities of the Company
under the Securities  Act, the Company will,  and it hereby does,  indemnify and
hold harmless,  to the extent permitted by law, all Participating  Stockholders,
each of their affiliates,  and their respective directors and officers,  general
and limited partners or members (and the directors,  officers,  affiliates,  and
controlling  Persons  thereof),   each  other  Person  who  participates  as  an
underwriter in the offering or sale of such securities and each other Person, if
any, who controls such seller or any such underwriter  within the meaning of the
Securities Act (collectively,  the "Indemnified  Parties"),  against any and all
losses, claims, damages, or liabilities, joint or several, and expenses to which
such seller, any such director or officer, general or limited partner, or member
or affiliate or any such  underwriter or  controlling  Person may become subject
under the  Securities  Act,  common law or  otherwise,  insofar as such  losses,
claims,  damages,  or liabilities (or actions or proceedings in respect thereof,
whether commenced or threatened,  and whether or not such Indemnified Party is a
party  thereto)  arise  out of or are based  upon (a) any  untrue  statement  or
alleged  untrue  statement of any material  fact  contained in any  registration
statement under which such securities were registered  under the Securities Act,
any preliminary, final, or summary prospectus contained therein or any amendment
or supplement  thereto, or (b) 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  the  Company  will  reimburse  such
Indemnified Party for any legal or any other expenses  reasonably incurred by it
in connection with  investigating or defending any such loss, claim,  liability,
action,  or  proceeding;  provided,  that the Company shall not be liable to any
Indemnified  Party in any such case to the  extent  that any such  loss,  claim,
damage,  liability  (or action or  proceeding  in respect  thereof),  or expense
arises  out of or is based  upon (i) any  untrue  statement  or  alleged  untrue
statement or omission or alleged omission made in such registration statement or
amendment or supplement  thereto or in any such  preliminary,  final, or summary
prospectus  in reliance  upon and in conformity  with written  information  with
respect  to a  Participating  Stockholder  furnished  to  the  Company  by  such
Participating  Stockholder for use in the preparation thereof, or (ii) an untrue
statement  or  alleged  untrue  statement,  omission  or alleged  omission  in a
prospectus if such untrue  statement or alleged  untrue  statement,  omission or
alleged  omission is corrected in an amendment or supplement to such  prospectus
which amendment or supplement is delivered to such Participating  Stockholder in
a timely manner and such Participating  Stockholder  thereafter fails to deliver
such prospectus as so amended or supplemented  prior to or concurrently with the
sale of such Registrable  Securities to the Person  asserting such damages.  The
indemnity  agreements shall not apply to amounts paid in settlement of claims if
such  settlement is effectuated  without the consent of the Company (which shall
not be  unreasonably  withheld).  Such indemnity  shall remain in full force and
effect  regardless of any  investigation  made by or on behalf of such seller or
any Indemnified  Party and shall survive the transfer of such securities by such
seller.

          (b) In the event of any  registration of any securities of the Company
under the Securities Act, each prospective seller thereunder will, and it hereby
does,  indemnify and hold harmless (in the same manner and to the same extent as
set forth in Section 6(a)) the Company, with respect to any statement or alleged
statement in or omission or alleged omission from such  registration  statement,
any  preliminary,  final,  or  summary  prospectus  contained  therein,  or  any
amendment or supplement,  if such statement or alleged  statement or omission or
alleged  omission  was made in  reliance  upon and in  conformity  with  written
information  with respect to such seller furnished to the Company by such seller
for use in the preparation of such registration statement, preliminary, final or
summary  prospectus or amendment or supplement,  or a document  incorporated  by
reference  into any of the  foregoing;  provided,  however,  that the  indemnity
agreement  contained  in this  Section  6(b) shall not apply to amounts  paid in
settlement of any loss, claim, damage,  liability, or action arising pursuant to
a registration if such settlement is effected without the consent of such seller
(which consent shall not be unreasonably withheld).  Such indemnity shall remain
in full force and effect regardless of any investigation made by or on behalf of
the  Company  or any of the  prospective  sellers,  or any of  their  respective
affiliates,  directors,  officers,  or controlling Persons and shall survive the
transfer of such securities by such seller.

          (c)  Promptly  after  receipt by an  indemnified  party  hereunder  of
written notice of the  commencement  of any action or proceeding with respect to
which a claim for  indemnification  may be made pursuant to this Section 6, such
indemnified  party will, if a claim in respect  thereof is to be made against an
indemnifying  party,  give written notice to the latter of the  commencement  of
such action;  provided, that the failure of the indemnified party to give notice
as provided herein shall not relieve the  indemnifying  party of its obligations
under  this  Section  6,  except to the extent  that the  indemnifying  party is
actually  prejudiced by such failure to give notice.  In case any such action is
brought  against  an  indemnified  party,  unless  in such  indemnified  party's
reasonable  judgment  a  conflict  of  interest  between  such  indemnified  and
indemnifying  parties may exist in respect of such claim, the indemnifying party
will be entitled to  participate in and to assume the defense  thereof,  jointly
with any other  indemnifying  party similarly notified to the extent that it may
wish, with counsel reasonably  satisfactory to such indemnified party, and after
notice from the indemnifying  party to such indemnified party of its election so
to assume the defense thereof, the indemnifying party will not be liable to such
indemnified party for any legal or other expenses  subsequently  incurred by the
latter in  connection  with the  defense  thereof.  No  indemnifying  party will
consent to entry of any  judgment  or enter into any  settlement  which does not
include  as an  unconditional  term  thereof,  the  giving  by the  claimant  or
plaintiff to such  indemnified  party of a release from all liability in respect
to such claim or litigation.

          (d) Indemnification similar to that specified herein (with appropriate
modifications)  shall be given by the  Company  and each  seller of  Registrable
Securities with respect to any required  registration or other  qualification of
securities  under  any  federal  or  state  law or  regulation  or  governmental
authority other than the Securities Act.

          7. Hold-Back Agreements

          In connection  with each public  offering,  each  Stockholder  and the
Company shall agree not to effect any public sale or distribution, including any
sale pursuant to Rule 144 under the Securities Act, of any equity  securities of
the Company, or of any security  convertible into or exchangeable or exercisable
for any equity security of the Company (in each case, other than as part of such
underwritten  public  offering),  within  seven days  before or 90 days (or such
lesser period as the managing  underwriters may permit) after the effective date
of such  registration;  provided that a Stockholder  shall be so limited only if
notice of the effective  date of such  registration  statement has been given to
such  Stockholder.  The Company  hereby  also agrees to use its best  efforts to
cause as the managing  underwriters  may require each other holder  ("Non-Public
Holders")  of any  equity  security,  or of any  security  convertible  into  or
exchangeable or exercisable for any equity  security,  of the Company  purchased
from the Company (at any time other than in a public  offering) to so agree. The
foregoing provisions shall not apply to any holder of Registrable  Securities if
such holder is prevented by applicable  statute or regulation from entering into
any such agreement;  provided, however, that any such holder shall undertake, in
its request to participate in any such underwritten  offering, not to effect any
public sale or  distribution of Registrable  Securities  (except as part of such
underwritten  registration)  during such period  unless it has  provided 45 days
prior written notice of such sale or distribution to the managing underwriter or
underwriter.

          8. Miscellaneous

          (a) Amendment and Modification.  This Agreement may be amended only in
a writing  executed by all the parties  hereto.  No course of dealing between or
among any Persons having any interest in this Agreement will be deemed effective
to  modify,  amend or  discharge  any part of this  Agreement  or any  rights or
obligations of any person under or by reason of this Agreement.

          (b) Successors and Assigns;  Entire Agreement.  This Agreement and all
of the  provisions  hereof shall be binding upon and inure to the benefit of the
parties  hereto  and their  respective  successors  and  permitted  assigns  and
executors,  administrators  and heirs.  In addition,  whether or not any express
assignment has been made,  the  provisions of this  Agreement  which are for the
benefit of  purchasers  or holders of  Registrable  Securities  are also for the
benefit of, and enforceable by, any subsequent holder of Registrable Securities.
This  Agreement,  together  with the  Stock  Purchase  Agreement,  Stockholders'
Agreement  and  the  ancillary   agreements  and  instruments  entered  into  in
connection  herewith  and  therewith,   sets  forth  the  entire  agreement  and
understandings among the parties as to the subject matter hereof and thereof and
merges and supersedes all prior discussions and  understandings of any and every
nature among them.

          (c) Separability. In the event that any provision of this Agreement or
the  application of any provision  hereof is declared to be illegal,  invalid or
otherwise unenforceable by a court of competent  jurisdiction,  the remainder of
this Agreement  shall not be affected  except to the extent  necessary to delete
such illegal,  invalid or  unenforceable  provision  unless that  provision held
invalid shall  substantially  impair the benefits of the  remaining  portions of
this Agreement.

          (d)  Notices.  All  notices,   requests,  claims,  demands  and  other
communications  hereunder  shall be in writing  and shall be deemed to have been
duly given when delivered in person, by cable, telegram,  facsimile transmission
with  confirmation  of receipt,  or telex,  or by registered  or certified  mail
(postage  prepaid,  return  receipt  requested)  to the  respective  parties  as
follows:

          If to the Company, to:

                               Galileo Corporation
                               Galileo Park
                               P.O. Box 550
                               Sturbridge, MA 01566-0550
                               Attention:  President
                               Fax: 508-347-2270

                               with a copy to:

                               Palmer & Dodge LLP
                               One Beacon Street
                               Boston, MA 02108
                               Attention: David R. Pokross, Jr., Esq.
                               Fax: 617-227-4420

                               if to Investor, to:

                               Andlinger Capital XIII LLC
                               c/o Andlinger & Company, Inc.
                               303 South Broadway, Suite 229
                               Tarrytown, NY 10591
                               Attention: Stephen A. Magida
                               Fax: 914-332-4977

                               with a required copy to:

                               Dechert Price & Rhoads
                               30 Rockefeller Plaza
                               New York, NY 10112
                               Attention:  Paul Gluck, Esq.
                               Fax:  212-698-3599

                               If to Blais, to:

                               John F. Blais, Jr.
                               Optical Filter Corporation
                               Two Mercer Road
                               Natick, MA 01760
                               Fax:  508-613-0729

                               If to Speyer, to:

                               W. Kip Speyer
                               Leisegang Medical, Inc.
                               6401 Congress Avenue
                               Boca Raton, FL 33487
                               Fax:  561-997-1645


          or to such other  address  as the  Person to whom  notice is given may
have previously furnished to the others in writing in the manner set forth above
(provided  that  notice of any change of address  shall be  effective  only upon
receipt thereof).

          (e) Governing Law. The validity, performance,  construction and effect
of this  Agreement  shall be governed by and  construed in  accordance  with the
internal law of Delaware,  without  giving  effect to principles of conflicts of
laws.

          (f) Headings.  The headings in this  Agreement are for  convenience of
reference only and shall not constitute a part of this Agreement, nor shall they
affect their meaning, construction or effect.

          (g)  Counterparts.  This  Agreement  may be  executed  in two or  more
counterparts and by the 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 instrument.

          (h)  Further  Assurances.  Each party  shall  cooperate  and take such
action as may be reasonably requested by another party in order to carry out the
provisions  and purposes of this  Agreement  and the  transactions  contemplated
hereby.

          (i) Effectiveness; Termination. This Agreement shall be effective upon
the  consummation  of  the  transactions  contemplated  by  the  Stock  Purchase
Agreement and,  unless sooner  terminated,  shall  terminate ten years after the
date of this Agreement and any additional period permitted by law, provided that
the  indemnification  rights and obligations set forth in Section 6 hereof shall
survive the termination of this Agreement.

          (j) Remedies.  In the event of a breach or a threatened  breach by any
party to this  Agreement  of its  obligations  under this  Agreement,  any party
injured  or to be injured by such  breach,  in  addition  to being  entitled  to
exercise  all rights  granted by law,  including  recovery of  damages,  will be
entitled to specific  performance of its rights under this  Agreement,  it being
agreed by the parties that the remedy at law,  including  monetary damages,  for
breach of such provision will be inadequate  compensation  for any loss and that
any defense in any action for specific performance that a remedy at law would be
adequate is waived.

          (k) Party No Longer Owning Registrable  Securities.  If a party hereto
ceases to own any Registrable Securities, such party will no longer be deemed to
be  a   Stockholder   for  purposes  of  this   Agreement;   provided  that  the
indemnification  rights  and  obligations  set forth in  Section 6 hereof  shall
survive any such cessation of ownership.

          (l)  Pronouns.  Whenever  the context may require,  any pronouns  used
herein shall be deemed also to include the  corresponding  neuter,  masculine or
feminine forms.

          (m) No Effect on Employment.  Nothing herein contained shall confer on
any  Stockholder  the right to remain in the employ of the Company or any of its
subsidiaries or Affiliates.


<PAGE>

          IN WITNESS WHEREOF, the parties hereto have executed this Registration
Rights Agreement as of the day and year first above written.


                                            GALILEO CORPORATION


                                            By: ________________________________
                                                 Name: W. Kip Speyer
                                                 Title: President


                                            ANDLINGER CAPITAL XIII LLC


                                            By: ________________________________
                                                Stephen A. Magida
                                                Title: Manager



                                            ____________________________________
                                            John F. Blais, Jr.



                                            ____________________________________
                                            W. Kip Speyer



<PAGE>

                                                           
                                                                      Exhibit C

                             STOCKHOLDERS' AGREEMENT


     This is a STOCKHOLDERS' AGREEMENT  ("Agreement"),  dated December 22, 1998,
among GALILEO  CORPORATION,  a Delaware  corporation (the "Company"),  ANDLINGER
CAPITAL XIII LLC, a Connecticut limited liability company ("Investor"),  JOHN F.
BLAIS, JR. ("Blais") and W. KIP SPEYER  ("Speyer")  (Blais,  Speyer and Investor
are  sometimes  referred to  hereinafter  individually  as a  "Stockholder"  and
collectively as the "Stockholders").

                                   Background

     A. The Company and the Investor  have  entered  into a Securities  Purchase
Agreement  dated the date hereof (the "Stock  Purchase  Agreement")  pursuant to
which,  among other  things,  the  Company  will sell to the  Investor,  and the
Investor  will  purchase  from the Company,  certain  Shares of and Warrants for
Common  Stock of the  Company,  as such terms are defined in, and upon the terms
and subject to the conditions set forth in, the Stock Purchase Agreement.

     B. The Stockholders  wish to enter into this Agreement to set forth,  among
other things,  certain  limitations with respect to their ownership and transfer
of Securities upon the terms and subject to the conditions set forth herein.

                                      Terms

     In consideration of the promises, covenants and agreements set forth herein
and  in  the  Stock  Purchase  Agreement,   and  for  other  good  and  valuable
consideration,  the receipt and  sufficiency  of which are hereby  acknowledged,
each of the parties  hereto,  intending to be legally  bound  hereby,  agrees as
follows:

                                     1. Term

     1.1 Term.  This  Agreement  shall become  effective  concurrently  with the
closing of the  transactions  contemplated  by the Stock Purchase  Agreement and
shall remain in effect for a period of three years thereafter (such period being
the "Term").

                                  2. Covenants

     2.1 Covenants.  During the Term,  without the prior written consent of each
of the  other  Stockholders  party  hereto,  no  Stockholder  or  any  Permitted
Transferee of such Stockholder shall Transfer any Securities, except

          (a) pursuant to a bona fide  underwritten  public offering  registered
under  the  Securities  Act  which  provides  for a  widely  distributed  public
offering;

          (b) pursuant to transactions involving Securities registered under the
Securities Act pursuant to "demand" or "piggyback" registration rights under the
Registration Rights Agreement;

          (c) to a Permitted Transferee;

          (d) during each fiscal quarter of the Company, Blais and his Permitted
Transferees  may (i)  Transfer in the  aggregate  up to 75,000  shares of Common
Stock in one or more  transactions  and (ii)  pledge in the  aggregate  up to an
additional 50,000 shares of Common Stock in one or more pledges  provided,  that
(A) the pledgee is either reasonably  satisfactory to the Company or a financial
institution,  (B) the  obligations  secured  by such  pledge  provide  for  full
recourse  against Blais and (C) if at any time Blais  defaults on any obligation
secured by a pledge of Common Stock of the Company, then upon and following such
default and until such  default is cured or waived,  Blais may no longer  pledge
shares of Common Stock pursuant to this clause (ii) and the aggregate  number of
shares of Common  Stock  that may be  Transferred  pursuant  to clause (i) above
shall be reduced to 50,000 per fiscal quarter of the Company;

          (e)  during  each  fiscal  quarter  of the  Company,  Speyer  and  his
Permitted Transferees may Transfer an aggregate of up to 10,000 shares of Common
Stock in one or more transactions;

          (f)  pursuant  to a  tender  offer  made  to all  the  holders  of the
Company's Common Stock; and

          (g) pursuant to any transaction  duly approved by the  stockholders of
the Company.

          The number of shares  permitted to be Transferred or pledged  pursuant
to  paragraphs  (d) and (e) shall in each case be adjusted to take into  account
the pro rata  effect of stock  dividends,  stock  distributions,  stock  splits,
reverse stock splits, stock combinations, recapitalizations,  reclassifications,
subdivisions, conversions or similar transactions in respect of Common Stock.

     2.2 Certain Transferees To Be Bound. No Stockholder or Permitted Transferee
may  effect  any  Transfer  to a  Permitted  Transferee  unless  such  Permitted
Transferee  executes an agreement  pursuant to which such  Permitted  Transferee
agrees to be bound by the terms and provisions of this  Agreement  applicable to
the transferor. Any purported Transfer in violation of this Section 2.2 shall be
null and void and of no force and effect and the purported transferee shall have
no rights or privileges in or with respect to the Company. The Company shall not
register or record or permit a transfer agent to register or record on the stock
record  books of the Company any  purported  Transfer to a Permitted  Transferee
unless and until it has  received  evidence  that such  Transfer and the parties
thereto have complied with this Section 2.2. In no event shall any Transferee of
Securities other than a Transferee pursuant to Section 2.1(c) be subject to this
Section 2.2.

     2.3  Other   Restrictions  May  Apply.   Each  Stockholder  (and  Permitted
Transferee  who  becomes  subject  to  this  Agreement)  acknowledges  that  the
restrictions  set forth herein are in  furtherance  and not in limitation of any
other  restrictions  that may be imposed by the Securities Act, the Exchange Act
or other U.S. federal securities laws and the rules and regulations  thereunder,
state  securities  laws and the  rules  and  regulations  thereunder,  any other
governmental  authority or any rules and regulations of The Nasdaq Stock Market,
Inc. or the National Association of Securities Dealers, Inc.

                                 3. Definitions.

     For  purposes  of this  Agreement,  the  following  terms  shall  have  the
following meanings:

     3.1 Affiliate.  An "Affiliate" of a person shall have the meaning set forth
in Rule  12b-2 of the  Exchange  Act as in effect  on the date  hereof  and,  in
addition,  shall include  "Associates" (as defined in Rule 12b-2 of the Exchange
Act as in effect on the date hereof) of such Person and its Affiliates.

     3.2 Common Stock. "Common Stock" means the common stock, par value $.01 per
share, of the Company. 

     3.3 Exchange Act. "Exchange Act" means the Securities Exchange Act of 1934,
as amended,  and the rules and regulations  promulgated  thereunder as in effect
from time to time.

     3.4 Permitted Transferee. "Permitted Transferee" means

          (a) in the case of Blais or any  Permitted  Transferee  of Blais,  (i)
Blais's spouse or children or grandchildren  (in each case,  natural or adopted)
or any trust for the sole  benefit of Blais or  Blais's  spouse or  children  or
grandchildren (in each case, natural or adopted) and (ii) the heirs,  executors,
administrators or personal  representatives  upon the death of Blais or upon the
incompetency  or  disability  of  Blais  for  purposes  of  the  protection  and
management of his assets;

          (b) in the case of Speyer or any Permitted  Transferee of Speyer,  (i)
Speyer's spouse or children or grandchildren (in each case,  natural or adopted)
or any trust for the sole  benefit of Speyer or  Speyer's  spouse or children or
grandchildren (in each case, natural or adopted) and (ii) the heirs,  executors,
administrators or personal  representatives upon the death of Speyer or upon the
incompetency  or  disability  of  Speyer  for  purposes  of the  protection  and
management of his assets;

          (c) in the case of Investor or any  Permitted  Transferee of Investor,
(i) the members of Investor,  (ii) the spouse or children or  grandchildren  (in
each case,  natural or adopted) or any trust for the sole  benefit of the spouse
or children or grandchildren (in each case, natural or adopted) of any member of
Investor, (iii) the heirs, executors, administrators or personal representatives
upon the death of any member of Investor or upon the  incompetency or disability
of any member of Investor for purposes of the  protection  and management of the
assets of such member; and (iv) any Affiliate of Investor or its members.

     3.5 Person. "Person" means any natural person, group, corporation,  limited
liability company, partnership, business association, trust, firm, government or
agency or political subdivision thereof, or other entity of whatever nature.

     3.6 Registration  Rights Agreement.  "Registration  Rights Agreement" means
the  Registration  Rights  Agreement dated the date hereof among the Company and
the Stockholders.

     3.7 Securities.  "Securities"  means the shares of Common Stock held by any
party  hereto and all other  securities  of the Company  (or a successor  to the
Company)  received  on  account of  ownership  of such  shares of Common  Stock,
including all securities  issued in connection  with any stock  dividend,  stock
distribution,   stock   split,   reverse   stock   split,   stock   combination,
recapitalization,   reclassification,   subdivision,   conversion   or   similar
transaction in respect thereof, but excluding any securities received on account
of such ownership in any merger or consolidation.

     3.8 Securities Act.  "Securities  Act" means the Securities Act of 1933, as
amended, and the rules and regulations  promulgated thereunder as in effect from
time to time.

     3.9  Transfer.   "Transfer"  means  the  making  of  any  sale,   exchange,
assignment, hypothecation, gift, security interest, pledge or other encumbrance,
or any contract  therefor,  any voting trust or other  agreement or  arrangement
with respect to the transfer of voting rights or any other  beneficial  interest
in any of the  Securities,  the creation of any other claim thereto or any other
transfer or disposition whatsoever, whether voluntary or involuntary,  affecting
the right, title, interest or possession in or to such Securities.

                                4. Miscellaneous

     4.1 Legends. Each certificate or instrument representing Securities subject
to the terms of this  Agreement  will bear the following  legends in addition to
any other legend required by law:

     THE SECURITIES REPRESENTED BY THIS CERTIFICATE ARE SUBJECT TO THE TERMS AND
     CONDITIONS OF A  STOCKHOLDERS'  AGREEMENT AMONG THE COMPANY AND THE HOLDERS
     SPECIFIED  THEREIN,  A COPY OF WHICH  AGREEMENT IS ON FILE AT THE PRINCIPAL
     OFFICE OF THE  COMPANY.  THE SALE,  TRANSFER  OR OTHER  DISPOSITION  OF THE
     SECURITIES IS SUBJECT TO THE TERMS OF SUCH AGREEMENT AND THE SECURITIES ARE
     TRANSFERABLE ONLY UPON PROOF OF COMPLIANCE THEREWITH.

     4.2 Governing Law;  Severability.  This Agreement  shall be governed by the
laws of the  State  of  Delaware  without  giving  effect  to  conflicts  of law
principles thereof. If any provision of this Agreement shall be declared invalid
or unenforceable by a court of competent jurisdiction,  the remaining provisions
hereof shall remain valid and shall continue in effect.

     4.3 Binding Effect on Successor.  This Agreement  shall be binding upon and
inure  to  the  benefit  of the  Company  and  the  Stockholders,  and to  their
respective  successors  and permitted  assigns,  including any successors to the
Company or the  Stockholders or their  businesses or assets as the result of any
merger, consolidation,  reorganization, transfer of assets or otherwise, and any
subsequent successor thereto,  without the execution or filing of any instrument
or the performance of any act.

     4.4 Specific Performance.  The Stockholders and the Company acknowledge and
agree that irreparable injury to the other party would occur in the event any of
the  provisions of this  Agreement  were not performed in accordance  with their
specific  terms or were  otherwise  breached  and that such injury  would not be
compensable  in  damages.  It is  accordingly  agreed that each part hereto (the
"Moving  Party") shall be entitled to specific  enforcement  of, and  injunctive
relief to prevent  any  violation  of the terms  hereof,  and the other  parties
hereto will not take action, directly or indirectly, in opposition to the Moving
Party  seeking  such  relief on the grounds  that any other  remedy or relief is
available at law or in equity.  The parties  further agree that no bond shall be
required as a condition to the granting of any such relief.

     4.5 No Waiver. Any waiver by any party of a breach of any provision of this
Agreement  shall  not  operate  as or be  construed  to be a waiver of any other
breach  of such  provision  or of any  breach  of any  other  provision  of this
Agreement. The failure of a party to insist upon strict adherence to any term of
this  Agreement  on one or more  occasions  shall not be  considered a waiver or
deprive that party of the right  thereafter  to insist upon strict  adherence to
that term or any other term of this Agreement.

     4.6 Entire Agreement;  Amendments. This Agreement,  together with the Stock
Purchase Agreement and other agreements entered into in connection  herewith and
therewith,  constitute the entire  understanding  of the parties with respect to
the subject  matter hereof and thereof.  This Agreement may be amended only by a
written  instrument duly executed by the parties or their respective  successors
or assigns.

     4.7  Headings.  The section  headings  contained in the  Agreement  are for
reference  purposes  only  and  shall  not  effect  in any  way the  meaning  or
interpretation of this Agreement.

     4.8   Notices.   All   notices,   requests,   claims,   demands  and  other
communications  hereunder  shall be in writing  and shall be given (and shall be
deemed to have been duly given upon receipt) by hand delivery,  facsimile,  mail
(registered  or  certified,   postage  prepaid,  return  receipt  requested)  or
recognized  express  carrier or delivery  service to the  respective  parties as
follows:

                   If to the Company, to:

                                Galileo Corporation
                                Galileo Park
                                P.O. Box 550
                                Sturbridge, MA 01566-0550
                                Attention:  President
                                Fax: 508-347-2270

                                with a copy to:

                                Palmer & Dodge LLP
                                One Beacon Street
                                Boston, MA 02108
                                Attention: David R. Pokross, Jr., Esq.
                                Fax: 617-227-4420

                                if to Investor, to:

                                Andlinger Capital XIII LLC
                                c/o Andlinger & Company, Inc.
                                303 South Broadway, Suite 229
                                Tarrytown, NY 10591
                                Attention: Stephen A. Magida
                                Fax: 914-332-4977

                                with a required copy to:

                                Dechert Price & Rhoads
                                30 Rockefeller Plaza
                                New York, NY 10112
                                Attention:  Paul Gluck, Esq.
                                Fax:  212-698-3599

                                If to Blais, to:

                                John F. Blais, Jr.
                                Optical Filter Corporation
                                Two Mercer Road
                                Natick, MA 01760
                                Fax:  508-613-0729

                                If to Speyer, to:

                                W. Kip Speyer
                                Leisegang Medical, Inc.
                                6401 Congress Avenue
                                Boca Raton, FL 33487
                                Fax:  561-997-1645


or to such  other  address  as the  Person  to whom  notice  is  given  may have
previously furnished to the others in writing in the manner set forth above.

     4.9 Further Assurances. From time to time on and after the date hereof, the
Company and the  Stockholders,  as the case may be, shall deliver or cause to be
delivered to the other party hereto such further  documents and  instruments and
shall do and cause to be done such  further acts as the other party hereto shall
reasonably  request to carry out more effectively the provisions and purposes of
this  Agreement,  to  evidence  compliance  herewith  or to  assure  that  it is
protected in acting hereunder.

     4.10 Counterparts.  This Agreement may be executed in counterparts, each of
which shall be deemed an original and all of which  together shall be deemed one
and the same instrument.

<PAGE>

     4.11 IN WITNESS  WHEREOF,  the Company and the  Stockholders  have executed
this Agreement,  or have caused this Agreement to be executed by duly authorized
officers, as of the day and year first above written.

                                             GALILEO CORPORATION


                                             By: _______________________________
                                                   Name:  W. Kip Speyer
                                                   Title: President


                                             ANDLINGER CAPITAL XIII LLC


                                             By: _______________________________
                                                   Stephen A. Magida
                                                   Title: Manager



                                                  ______________________________
                                                  John F. Blais, Jr.



                                                  ______________________________
                                                  W. Kip Speyer



<PAGE>

                                            
                                                                     Exhibit D

                    Form of Opinion of Counsel to the Company


         The  opinion  will  be to the  following  effect  with  such  customary
qualifications  as to scope as are  reasonably  satisfactory  to counsel for the
Purchaser.  Capitalized terms used herein which are not otherwise defined herein
shall have the meanings ascribed to them in the Securities  Purchase  Agreement,
dated December __, 1998, by and among Andlinger Capital XIII Trust ("Purchaser")
and [Public Co.] (the "Agreement").

1. The Company is a corporation  validly existing and in good standing under the
laws of the State of Delaware and has the requisite  corporate power to carry on
its business as it is now being conducted.

2.  Each  of  Leisegang  Medical,  Inc.  and  Optical  Filter  Corporation  is a
corporation  validly  existing  and in  good  standing  under  the  laws  of its
jurisdiction of incorporation and has the requisite  corporate power to carry on
its  business  as it is now being  conducted.  Except  as set forth on  Schedule
2.1(b) of the Agreement,  all of the outstanding shares of capital stock of each
such subsidiary have been validly issued,  are fully paid and  nonassessable and
are owned of record by the Company or by another wholly owned  subsidiary of the
Company.

3. The  authorized  capital stock of the Company  consists  solely of __________
shares of Common  Stock.  As of the date  hereof,  ___________  shares of Common
Stock are reserved in the aggregate for issuance pursuant to the Company's Stock
Option  Plans,  and  _________  shares of Common Stock are reserved for issuance
pursuant to the Warrants.

4. The Company has all  requisite  corporate  power and authority to execute and
deliver the Agreement and to consummate the transactions  contemplated  thereby.
The execution and delivery of the Agreement by the Company and the  consummation
by the Company of the  transactions  contemplated  thereby  (including,  without
limitation,  the issuance of the Shares, the Warrants and the Conversion Shares)
have been duly and validly  authorized by the Board of Directors of the Company,
and no other  corporate  proceedings on the part of the Company are necessary to
authorize this Agreement or to consummate the transactions so contemplated.  The
Agreement has been duly and validly executed and delivered by the Company,  and,
assuming  the  Agreement  constitutes  a valid  and  binding  obligation  of the
Investor,  the  Agreement  constitutes  a valid  and  binding  agreement  of the
Company,  enforceable against the Company in accordance with its terms,  subject
to applicable bankruptcy, insolvency, reorganization,  moratorium and other laws
affecting creditors rights generally and to general principles of equity.

5. The Shares, upon issuance in accordance with the terms of the Agreement, will
be duly authorized, validly issued, fully paid and nonassessable,  and free from
all issuance taxes,  liens,  claims and  encumbrances  with respect to the issue
thereof and shall not be subject to  preemptive  rights of  stockholders  of the
Company and will not impose  personal  liability  upon the holder  thereof.  The
Conversion  Shares are duly authorized and reserved for issuance,  and, upon the
exercise of the Warrant from time to time in accordance  with the terms thereof,
will be validly issued, fully paid and nonassessable,  and if issued on the date
hereof in  accordance  with the terms  thereof  would be free from all  issuance
taxes,  liens,  claims and  encumbrances  with respect to the issue  thereof and
would not be subject to  preemptive  rights of  stockholders  of the Company and
would not impose personal liability upon the holder thereof.

6. Except as set forth in Schedule 2.8 of the  Agreement,  neither the execution
and  delivery  of the  Agreement  by the  Company  nor the  consummation  of the
transactions  contemplated  thereby  (including the issuance of the Shares,  the
Warrant and the  Conversion  Shares) will result in any  violation of or default
(with or  without  notice or lapse of time,  or both)  under,  or give rise to a
right of termination,  cancellation or acceleration of any obligation, or result
in the creation of any Lien upon any of the  properties or assets or the Company
or any of its  subsidiaries  under,  (a) the  Certificate of  Incorporation,  as
amended,  or Bylaws of the Company or the comparable  charter or  organizational
documents of any of its subsidiaries, (b) any instrument,  contract or agreement
listed in any  schedule  to the  Agreement  to which the  Company  or any of its
subsidiaries  is a party or by which any of their assets or properties is bound,
or (c) subject to the governmental  filings and other matters referred to in the
following sentence, any judgment,  order, decree, statute, law, ordinance,  rule
or regulation  known to us applicable to the Company or any of its  subsidiaries
or their respective properties or assets, other than, in the case of clauses (b)
or (c), any such violations,  defaults,  rights or Liens that individually or in
the  aggregate  could not  reasonably  be  expected  to have a Material  Adverse
Effect.

7. No consent, approval, order or authorization of, or registration, declaration
or filing with, any  Governmental  Entity,  is required by the Company or any of
its  subsidiaries in connection with the execution and delivery of the Agreement
by  the  Company  or  the  consummation  by  the  Company  of  the  transactions
contemplated  by the  Agreement  (including  the  issuance of the Shares and the
Conversion Shares),  except for the NASDAQ waiver contemplated by Section 5.1(k)
of the Agreement, which has been obtained.

8. Except as disclosed  in the SEC  Documents or as set forth in Schedule of the
Agreement,  to our knowledge there is no suit, action or proceeding  pending or,
to our knowledge, threatened against the Company or any of its subsidiaries that
could  reasonably  be expected  to have a Material  Adverse  Effect,  nor to our
knowledge,  is there  any  judgment,  decree,  injunction,  rule or order of any
Governmental Entity or arbitrator  outstanding against the Company or any of its
subsidiaries  that could  reasonably  be  expected  to have a  Material  Adverse
Effect.

9. The Board of  Directors  of the  Company  has taken all action  necessary  to
approve the  acquisition of shares of Common Stock by each Investor  pursuant to
this  Agreement  (which shares  represent 15% or more of the voting stock of the
Company) in accordance with and pursuant to Section 203(a)(1) of the DGCL.

10. Based upon the factual  representations  and warranties made by the Investor
in the Agreement, including without limitation, in Section 3.4 of the Agreement,
the offer,  issue,  sale and  delivery of the Shares and the  Warrant  Agreement
under  the  circumstances  contemplated  by the  Agreement  constitute  exempted
transactions under the Securities Act of 1933, as amended.


                                                     
                                                             Execution Copy

                          REGISTRATION RIGHTS AGREEMENT

          This REGISTRATION RIGHTS AGREEMENT (this "Agreement"),  dated December
22,  1998,  is  entered  into  by and  among  GALILEO  CORPORATION,  a  Delaware
corporation (the "Company"),  ANDLINGER CAPITAL XIII LLC, a Connecticut  limited
liability company  ("Investor"),  JOHN F. BLAIS, JR. ("Blais") and W. KIP SPEYER
("Speyer").  Investor,  Blais and Speyer are sometimes  referred to  hereinafter
individually as a "Stockholder" and collectively as the "Stockholders."

                                   Background

          The Company and  Investor  are  entering  into a  Securities  Purchase
Agreement and the Company and the Stockholders are entering into a Stockholders'
Agreement,  each dated the date hereof.  In connection with the entry into those
agreements,  and as an  inducement  to  the  Stockholders  to  enter  into  such
agreements,  the Company is granting the  registration  rights  provided in this
Agreement.

                                      Terms

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

          1. Definitions

          As used in this Agreement,  the following capitalized terms shall have
the following meanings:

          "Affiliate"  has the  meaning  set  forth in Rule  12b-2 of the  Rules
promulgated under the Securities Exchange Act of 1934, as amended.

          "Common  Stock" means the common stock,  par value $.01 per share,  of
the Company.

          "Permitted  Transferee"  shall have the meaning given such term in the
Stockholders'  Agreement  for so long as that  agreement is in effect and,  when
such agreement is no longer in effect, any permitted transferee.

          "Person"  means  a  natural  person,  partnership,  limited  liability
company,  corporation,  trust or unincorporated organization, or a government or
agency or political subdivision thereof.

          "Registrable  Securities" shall mean any Common Stock issued to and or
owned by  Investor  or any of its  Affiliates,  by Blais  or  Speyer,  or by the
Permitted Transferees of any of the foregoing, and any Common Stock which may be
issued or  distributed  in respect of such  Common  Stock by way of  conversion,
stock  dividend or stock  split,  or other  distribution,  recapitalization,  or
reclassification. As to any particular Registrable Securities, once issued, such
securities  shall cease to be  Registrable  Securities  when (i) a  registration
statement  with  respect  to the  sale  of such  securities  shall  have  become
effective under the Securities Act and such securities  shall have been disposed
of in accordance with such  registration  statement,  (ii) such securities shall
have  been  distributed  to the  public  pursuant  to Rule  144 or 144A  (or any
successor provisions) under the Securities Act, (iii) such securities shall have
been  otherwise  transferred,  new  certificates  for them not  bearing a legend
restricting  further  transfer  shall have been  delivered  by the  Company  and
subsequent  disposition of such  securities  shall not require  registration  or
qualification  under the Securities Act or any state  securities or blue sky law
then in force, or (iv) such securities shall have ceased to be outstanding.

          "SEC" means the Securities and Exchange Commission.

          "Securities  Act" means the  Securities  Act of 1933,  as amended from
time to time.

          "Stockholders'  Agreement" means the Stockholders' Agreement dated the
date hereof among the Company, Investor, Blais and Speyer.

          "Stock Purchase  Agreement"  means the Securities  Purchase  Agreement
dated the date hereof between the Company and Investor.

          "underwritten   registration  or   "underwritten   offering"  means  a
registration  in which  securities of the Company are sold to an underwriter for
reoffering to the public.

          2. Demand Registrations

          (a)  Upon the  written  request  of (i)  Investor,  (ii)  Stockholders
holding  shares of Common  Stock  representing  at least 50% of the  outstanding
shares of Common Stock held by the Stockholders (the "Majority Stockholders") or
(iii)  Blais or Speyer so long as such  request of Blais or Speyer is made after
December 31, 2001 (any of the foregoing, a "Requesting Stockholder"), requesting
that the Company effect the registration under the Securities Act of all or part
of the particular Requesting Stockholder's Registrable Securities and specifying
the intended method of disposition  thereof,  the Company will, as expeditiously
as  possible,  use its  best  efforts  to  effect  the  registration  under  the
Securities Act of (i) the Registrable  Securities  which the Company has been so
requested  to  register  by  the  Requesting  Stockholder  so as to  permit  the
disposition (in accordance with the intended method thereof as aforesaid) of the
Registrable Securities so to be registered;  provided, however, that the Company
may delay the filing of the  registration  statement  for up to a single  90-day
period if the Board  determines  that such  filing  should  not be made due to a
valid  need  not to  disclose  confidential  information  or  because  it  would
materially  interfere  with  any  material  financing,  acquisition,   corporate
reorganization, or merger involving the Company. So long as the Company does not
breach any of its obligations in respect of the demand  registration (other than
a breach which would not adversely affect the Requesting  Stockholder's  rights)
with respect to each holder,  the Company  shall only be required to comply with
three (3)  requests by Investor  and/or the  Majority  Stockholders  and one (1)
request by each of Blais and Speyer for demand  registration.  The Company shall
give written notice to all Stockholders other than the Requesting Stockholder of
its intention to file a  registration  statement  pursuant to this  paragraph at
least 30 days prior to the filing  thereof,  and if requested in writing by such
other Stockholders within 30 days after receipt of such notice, the Company will
include in such  registration  statement  any shares of Common Stock held by the
other Stockholders. All of the Stockholders whose shares of Common Stock will be
included in a registration  statement (whether a Requesting Stockholder or other
Stockholder  electing to  participate)  pursuant to any "demand" or  "piggyback"
registration  under this Agreement are referred to herein as the  "Participating
Stockholders."

          (b) A  registration  requested  pursuant  to Section  2(a) will not be
deemed to have been effected unless it has become effective;  provided, that if,
within 135 days after it has  become  effective,  the  offering  of  Registrable
Securities  pursuant to such  registration is interfered with by any stop order,
injunction,  or other  order  or  requirement  of the SEC or other  governmental
agency or court prior to the sale of all the Registrable  Securities  registered
thereunder,  such  registration  will  be  deemed  not to  have  been  effected.
Notwithstanding the preceding sentence, if any such stop order is rescinded, the
effective  period shall  continue  upon such  rescission  and be extended by the
number of days by which such stop order delayed the filing.

          (c) Each  requested  registration  shall involve either a firm or best
efforts  underwritten  public offering.  The Requesting  Stockholder causing the
registration  statement  shall  have  the  right to  select  an  underwriter  or
underwriters of nationally  recognized  standing  satisfactory to the Company to
administer the offering.

          (d) If the managing  underwriter in a requested  registration  advises
the Company in writing that, in its opinion,  the number of securities requested
to be included in such registration  (including  securities of the Company which
are not Registrable  Securities) exceeds the number (the "Maximum Amount") which
can be sold in such  offering  so as to be likely to have an  adverse  effect on
such offering as contemplated by the Requesting Stockholder (including the price
at which the  Requesting  Stockholder  proposes  to sell such  securities),  the
registration  statement shall only include shares of the Requesting  Stockholder
and, to the extent such shares are less than the Maximum  Amount,  shares of the
other Participating  Stockholders in amounts to be allocated among them based on
the relative  number of Registrable  Securities  then held by them. In the event
that the number of  Registrable  Securities  requested  to be  included  in such
registration exceeds the Maximum Amount, the Requesting Stockholder may elect to
withdraw the registration  request and such registration  statement shall not be
deemed to have been effected.

          (e) The Company shall not at any time grant any other person rights to
register  securities of the Company on terms which could restrict in any way the
ability of the Company fully to perform its obligations to the holders  pursuant
to this Section.

          3. Piggyback Registrations.

          (a) If the  Company  at any time  after the date  hereof  proposes  to
register its Common Stock under the  Securities  Act (other than a  registration
statement  on Forms S-8 or S-4 or any  similar  or  successor  form or any other
registration  statement  relating  to  an  exchange  offer  or  an  offering  of
securities solely to the Company's  employees or security  holders),  whether or
not for sale for its own account,  pursuant to a registration statement on which
it is  permissible  to register  Registrable  Securities  for sale to the public
under the  Securities  Act,  it will each such time give  written  notice to all
Stockholders  of its  intention  to do so at least 30 days  prior to the date of
filing the proposed  registration  statement  and of such  Stockholder's  rights
hereunder.  Upon the written request of a Stockholder  made within 25 days after
the receipt of any such notice  (which  request  shall  specify the  Registrable
Securities intended to be disposed of by such Stockholder), the Company will use
its reasonable best efforts to effect the registration  under the Securities Act
of all  Registrable  Securities  which  the  Company  has been so  requested  to
register. If a registration  requested involves an underwritten public offering,
a Participating Stockholder may elect, in writing prior to the effective date of
the registration  statement filed in connection with such  registration,  not to
register such securities in connection with such  registration.  The Company may
terminate its efforts to register  such  securities,  including the  Registrable
Securities, at any time without liability to any Participating Stockholder.

          (b) If a  registration  involves  an  underwritten  offering  and  the
managing  underwriter  advises the Company in writing that, in its opinion,  the
amount of  securities  requested  to be  included  in such  registration  by all
selling holders exceeds the amount which can be sold in such offering,  so as to
be likely to have an adverse  effect on such  offering  as  contemplated  by the
Company  (including  the  price at  which  the  Company  proposes  to sell  such
securities),  then the Company will include in such registration (i) first, 100%
of either (A) the Common Stock the Company  proposes to sell on a primary  basis
or (B) the Common  Stock a holder  proposes  to sell upon  exercise  of "demand"
registration  rights  pursuant to Section 2, (ii)  second,  to the extent of the
amount of Registrable  Securities  requested to be included in such registration
which, in the opinion of such managing  underwriter,  can be sold without having
the adverse effect referred to above, the amount of Registrable Securities which
the holders have requested to be included in such  registration,  such amount to
be allocated pro rata among holders exercising  "piggyback"  registration rights
on the basis of the relative  number of shares of  securities  then held by each
such holder (provided,  that any securities thereby allocated to any such holder
that  exceed such  holder's  request  will be  reallocated  among the  remaining
requesting holders in like manner).

          4. Registration Expenses.

          The Company shall be responsible for any and all expenses  incident to
performance  of or  compliance  with the  registration  rights set forth in this
Agreement,  including,  without  limitation,  (i) all SEC and stock  exchange or
National Association of Securities Dealers,  Inc.  registration and filing fees,
(ii)  all  fees and  expenses  of  complying  with  securities  or blue sky laws
(including fees and  disbursements of counsel for the underwriters in connection
with blue sky  qualifications),  (iii) all  printing,  messenger,  and  delivery
expenses,  (iv) all fees and expenses incurred in connection with the listing of
the  securities on any securities  exchange or The Nasdaq Stock Market,  (v) the
fees and disbursements of counsel for the Company and of its independent  public
accountants,  including the expenses of any special audits and/or "cold comfort"
letters  required by or incident to such  performance and  compliance,  (vi) the
reasonable fees and  disbursements of one counsel selected by the  Participating
Stockholders  to represent them in connection with each such  registration,  and
(vii) any fees and disbursements of underwriters customarily paid by the issuers
or  sellers of  securities,  including  liability  insurance  if the  Company so
desires, and the reasonable fees and expenses of any special experts retained in
connection with the requested registration, but excluding underwriting discounts
and commissions and transfer taxes, if any.

          5. Registration Procedures.

          If and  whenever  the Company is  required to use its best  efforts to
effect  or cause  the  registration  of any  Registrable  Securities  under  the
Securities Act as provided in this Agreement,  the Company will as expeditiously
as possible:

          (a)  prepare  and,  in any event  within 60 days  after the end of the
period  within  which all other  requests for  registration  may be given to the
Company,  file  with  the SEC a  registration  statement  with  respect  to such
Registrable  Securities  and use its best  efforts  to cause  such  registration
statement to become effective;

          (b) prepare and file with the SEC such  amendments and  supplements to
such registration  statement and the prospectus used in connection  therewith as
may be necessary to keep such registration  statement effective for a period not
in excess of 135 days and to comply with the  provisions of the  Securities  Act
with respect to the disposition of all securities  covered by such  registration
statement  during  such  period  in  accordance  with the  intended  methods  of
disposition  by the seller or  sellers  thereof  set forth in such  registration
statement;  provided, that before filing a registration statement or prospectus,
or any  amendments  or  supplements  thereto,  the Company  will  furnish to one
counsel  selected  by the holders of a majority  of the  Registrable  Securities
covered by such  registration  statement to represent all holders of Registrable
Securities  covered  by such  registration  statement,  copies of all  documents
proposed  to be filed,  which  documents  will be  subject to the review of such
counsel;

          (c) furnish to each seller of such Registrable  Securities such number
of copies of such  registration  statement and of each  amendment and supplement
thereto  (in each case  including  all  exhibits),  such number of copies of the
prospectus included in such registration  statement  (including each preliminary
prospectus and summary  prospectus),  in conformity with the requirements of the
Securities Act, and such other  documents as such seller may reasonably  request
in order to facilitate  the  disposition of the  Registrable  Securities by such
seller;

          (d) use its best  efforts  to  register  or qualify  such  Registrable
Securities covered by such registration statement under such other securities or
blue sky laws of such jurisdictions  where such registration or qualification is
required  and which seller shall  reasonably  request,  and do any and all other
acts and things  which may be  reasonably  necessary or advisable to enable such
seller to consummate the  disposition in such  jurisdictions  of the Registrable
Securities owned by such seller,  except that the Company shall not for any such
purpose be required to qualify  generally to do business as a foreign Company in
any  jurisdiction  where,  but for the requirements of this clause (d), it would
not be obligated to be so qualified,  to subject  itself to taxation in any such
jurisdiction,  or  to  consent  to  general  service  of  process  in  any  such
jurisdiction;

          (e) use its best efforts to cause such Registrable  Securities covered
by such  registration  statement to be registered with or approved by such other
governmental agencies or authorities as may be necessary to enable the seller or
sellers thereof to consummate the disposition of such Registrable Securities;

          (f) immediately notify the Participating Stockholders at any time when
a prospectus  relating  thereto is required to be delivered under the Securities
Act within the  appropriate  period  mentioned  in clause (b), of the  Company's
becoming aware that the prospectus included in such registration  statement,  as
then in effect,  includes  an untrue  statement  of a material  fact or omits to
state a material  fact  required to be stated  therein or  necessary to make the
statements  therein  not  misleading  in the  light  of the  circumstances  then
existing, and at the request of a Participating Stockholder, prepare and furnish
to such Participating Stockholder a reasonable number of copies of an amended or
supplemental  prospectus as may be necessary so that, as thereafter delivered to
the purchasers of such Registrable Securities, such prospectus shall not include
an untrue statement of a material fact or omit to state a material fact required
to be stated therein or necessary to make the statements  therein not misleading
in the light of the  circumstances  then existing.  If the Board determines that
such amended or supplemental  prospectus should not be prepared and filed due to
a valid need not to disclose  confidential  information  or because either would
materially  interfere  with  any  material  financing,  acquisition,   corporate
reorganization, or merger involving the Company, then the Company shall have the
right,  upon  giving the notice  under  this  Section  5(f),  to  postpone  such
requirement to deliver an amended or supplemental prospectus for a single 60-day
period,  provided, that, (i) the period during which the Company is obligated to
keep the registration  statement  effective under Section 5(b) shall be extended
by the duration of such  postponement and (ii) the Company states in such notice
that it is postponing  its delivery of such amended or  supplemental  prospectus
pursuant to this sentence;

          (g) otherwise use its best efforts to comply with all applicable rules
and regulations of the SEC, and make available to its security holders,  as soon
as reasonably practicable (but not more than 15 months) after the effective date
of the  registration  statement,  an earnings  statement which shall satisfy the
provisions of Section 11(a) of the Securities Act and the rules and  regulations
promulgated thereunder;

          (h) use its best efforts to list such  Registrable  Securities  on any
securities exchange (including without limitation the Nasdaq National Market) on
which the Common Stock is then listed,  if such  Registrable  Securities are not
already so listed and if such listing is then permitted  under the rules of such
exchange,  and to provide a transfer  agent and registrar  for such  Registrable
Securities  covered by such registration  statement not later than the effective
date of such registration statement;

          (i) enter into such customary  agreements  (including an  underwriting
agreement in customary  form) and take such other actions  customarily  taken by
registrants  as sellers  of a majority  of such  Registrable  Securities  or the
underwriters,  if any, reasonably request in order to expedite or facilitate the
disposition of such Registrable Securities;

          (j) use  commercially  reasonable  efforts to obtain a "cold  comfort"
letter or letters from the Company's independent public accountants in customary
form and  covering  matters of the type  customarily  covered by "cold  comfort"
letters as the seller or sellers of a majority  of such  Registrable  Securities
shall reasonably request; and

          (k) make  available for  inspection by any seller of such  Registrable
Securities   covered  by  such  registration   statement,   by  any  underwriter
participating  in any disposition to be effected  pursuant to such  registration
statement and by any attorney,  accountant,  or other agent retained by any such
seller or any such  underwriter,  all  pertinent  financial  and other  records,
pertinent corporate  documents,  and properties of the Company, and cause all of
the  Company's  officers,  directors,  and  employees to supply all  information
reasonably requested by any such seller, underwriter,  attorney,  accountant, or
agent in connection with such registration statement.

          As a condition  to the  Company's  obligation  under this Section 5 to
cause a registration  statement or an amendment to be filed,  or Common Stock to
be included in the registration statement,  each Participating Stockholder shall
provide such information and execute such documents  (including any agreement or
undertaking relating to expenses, indemnification or other matters to the extent
consistent  with the provisions of this Agreement) as may reasonably be required
by the Company in connection with such registration. In addition,  Participating
Stockholders  shall  provide  counsel for the Company  with such  documents  and
information as may be reasonably requested by counsel for the Company.

          6. Indemnification.

          (a) In the event of any  registration of any securities of the Company
under the Securities  Act, the Company will,  and it hereby does,  indemnify and
hold harmless,  to the extent permitted by law, all Participating  Stockholders,
each of their affiliates,  and their respective directors and officers,  general
and limited partners or members (and the directors,  officers,  affiliates,  and
controlling  Persons  thereof),   each  other  Person  who  participates  as  an
underwriter in the offering or sale of such securities and each other Person, if
any, who controls such seller or any such underwriter  within the meaning of the
Securities Act (collectively,  the "Indemnified  Parties"),  against any and all
losses, claims, damages, or liabilities, joint or several, and expenses to which
such seller, any such director or officer, general or limited partner, or member
or affiliate or any such  underwriter or  controlling  Person may become subject
under the  Securities  Act,  common law or  otherwise,  insofar as such  losses,
claims,  damages,  or liabilities (or actions or proceedings in respect thereof,
whether commenced or threatened,  and whether or not such Indemnified Party is a
party  thereto)  arise  out of or are based  upon (a) any  untrue  statement  or
alleged  untrue  statement of any material  fact  contained in any  registration
statement under which such securities were registered  under the Securities Act,
any preliminary, final, or summary prospectus contained therein or any amendment
or supplement  thereto, or (b) 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  the  Company  will  reimburse  such
Indemnified Party for any legal or any other expenses  reasonably incurred by it
in connection with  investigating or defending any such loss, claim,  liability,
action,  or  proceeding;  provided,  that the Company shall not be liable to any
Indemnified  Party in any such case to the  extent  that any such  loss,  claim,
damage,  liability  (or action or  proceeding  in respect  thereof),  or expense
arises  out of or is based  upon (i) any  untrue  statement  or  alleged  untrue
statement or omission or alleged omission made in such registration statement or
amendment or supplement  thereto or in any such  preliminary,  final, or summary
prospectus  in reliance  upon and in conformity  with written  information  with
respect  to a  Participating  Stockholder  furnished  to  the  Company  by  such
Participating  Stockholder for use in the preparation thereof, or (ii) an untrue
statement  or  alleged  untrue  statement,  omission  or alleged  omission  in a
prospectus if such untrue  statement or alleged  untrue  statement,  omission or
alleged  omission is corrected in an amendment or supplement to such  prospectus
which amendment or supplement is delivered to such Participating  Stockholder in
a timely manner and such Participating  Stockholder  thereafter fails to deliver
such prospectus as so amended or supplemented  prior to or concurrently with the
sale of such Registrable  Securities to the Person  asserting such damages.  The
indemnity  agreements shall not apply to amounts paid in settlement of claims if
such  settlement is effectuated  without the consent of the Company (which shall
not be  unreasonably  withheld).  Such indemnity  shall remain in full force and
effect  regardless of any  investigation  made by or on behalf of such seller or
any Indemnified  Party and shall survive the transfer of such securities by such
seller.

          (b) In the event of any  registration of any securities of the Company
under the Securities Act, each prospective seller thereunder will, and it hereby
does,  indemnify and hold harmless (in the same manner and to the same extent as
set forth in Section 6(a)) the Company, with respect to any statement or alleged
statement in or omission or alleged omission from such  registration  statement,
any  preliminary,  final,  or  summary  prospectus  contained  therein,  or  any
amendment or supplement,  if such statement or alleged  statement or omission or
alleged  omission  was made in  reliance  upon and in  conformity  with  written
information  with respect to such seller furnished to the Company by such seller
for use in the preparation of such registration statement, preliminary, final or
summary  prospectus or amendment or supplement,  or a document  incorporated  by
reference  into any of the  foregoing;  provided,  however,  that the  indemnity
agreement  contained  in this  Section  6(b) shall not apply to amounts  paid in
settlement of any loss, claim, damage,  liability, or action arising pursuant to
a registration if such settlement is effected without the consent of such seller
(which consent shall not be unreasonably withheld).  Such indemnity shall remain
in full force and effect regardless of any investigation made by or on behalf of
the  Company  or any of the  prospective  sellers,  or any of  their  respective
affiliates,  directors,  officers,  or controlling Persons and shall survive the
transfer of such securities by such seller.

          (c)  Promptly  after  receipt by an  indemnified  party  hereunder  of
written notice of the  commencement  of any action or proceeding with respect to
which a claim for  indemnification  may be made pursuant to this Section 6, such
indemnified  party will, if a claim in respect  thereof is to be made against an
indemnifying  party,  give written notice to the latter of the  commencement  of
such action;  provided, that the failure of the indemnified party to give notice
as provided herein shall not relieve the  indemnifying  party of its obligations
under  this  Section  6,  except to the extent  that the  indemnifying  party is
actually  prejudiced by such failure to give notice.  In case any such action is
brought  against  an  indemnified  party,  unless  in such  indemnified  party's
reasonable  judgment  a  conflict  of  interest  between  such  indemnified  and
indemnifying  parties may exist in respect of such claim, the indemnifying party
will be entitled to  participate in and to assume the defense  thereof,  jointly
with any other  indemnifying  party similarly notified to the extent that it may
wish, with counsel reasonably  satisfactory to such indemnified party, and after
notice from the indemnifying  party to such indemnified party of its election so
to assume the defense thereof, the indemnifying party will not be liable to such
indemnified party for any legal or other expenses  subsequently  incurred by the
latter in  connection  with the  defense  thereof.  No  indemnifying  party will
consent to entry of any  judgment  or enter into any  settlement  which does not
include  as an  unconditional  term  thereof,  the  giving  by the  claimant  or
plaintiff to such  indemnified  party of a release from all liability in respect
to such claim or litigation.

          (d) Indemnification similar to that specified herein (with appropriate
modifications)  shall be given by the  Company  and each  seller of  Registrable
Securities with respect to any required  registration or other  qualification of
securities  under  any  federal  or  state  law or  regulation  or  governmental
authority other than the Securities Act.

          7. Hold-Back Agreements

          In connection  with each public  offering,  each  Stockholder  and the
Company shall agree not to effect any public sale or distribution, including any
sale pursuant to Rule 144 under the Securities Act, of any equity  securities of
the Company, or of any security  convertible into or exchangeable or exercisable
for any equity security of the Company (in each case, other than as part of such
underwritten  public  offering),  within  seven days  before or 90 days (or such
lesser period as the managing  underwriters may permit) after the effective date
of such  registration;  provided that a Stockholder  shall be so limited only if
notice of the effective  date of such  registration  statement has been given to
such  Stockholder.  The Company  hereby  also agrees to use its best  efforts to
cause as the managing  underwriters  may require each other holder  ("Non-Public
Holders")  of any  equity  security,  or of any  security  convertible  into  or
exchangeable or exercisable for any equity  security,  of the Company  purchased
from the Company (at any time other than in a public  offering) to so agree. The
foregoing provisions shall not apply to any holder of Registrable  Securities if
such holder is prevented by applicable  statute or regulation from entering into
any such agreement;  provided, however, that any such holder shall undertake, in
its request to participate in any such underwritten  offering, not to effect any
public sale or  distribution of Registrable  Securities  (except as part of such
underwritten  registration)  during such period  unless it has  provided 45 days
prior written notice of such sale or distribution to the managing underwriter or
underwriter.

          8. Miscellaneous

          (a) Amendment and Modification.  This Agreement may be amended only in
a writing  executed by all the parties  hereto.  No course of dealing between or
among any Persons having any interest in this Agreement will be deemed effective
to  modify,  amend or  discharge  any part of this  Agreement  or any  rights or
obligations of any person under or by reason of this Agreement.

          (b) Successors and Assigns;  Entire Agreement.  This Agreement and all
of the  provisions  hereof shall be binding upon and inure to the benefit of the
parties  hereto  and their  respective  successors  and  permitted  assigns  and
executors,  administrators  and heirs.  In addition,  whether or not any express
assignment has been made,  the  provisions of this  Agreement  which are for the
benefit of  purchasers  or holders of  Registrable  Securities  are also for the
benefit of, and enforceable by, any subsequent holder of Registrable Securities.
This  Agreement,  together  with the  Stock  Purchase  Agreement,  Stockholders'
Agreement  and  the  ancillary   agreements  and  instruments  entered  into  in
connection  herewith  and  therewith,   sets  forth  the  entire  agreement  and
understandings among the parties as to the subject matter hereof and thereof and
merges and supersedes all prior discussions and  understandings of any and every
nature among them.

          (c) Separability. In the event that any provision of this Agreement or
the  application of any provision  hereof is declared to be illegal,  invalid or
otherwise unenforceable by a court of competent  jurisdiction,  the remainder of
this Agreement  shall not be affected  except to the extent  necessary to delete
such illegal,  invalid or  unenforceable  provision  unless that  provision held
invalid shall  substantially  impair the benefits of the  remaining  portions of
this Agreement.

          (d)  Notices.  All  notices,   requests,  claims,  demands  and  other
communications  hereunder  shall be in writing  and shall be deemed to have been
duly given when delivered in person, by cable, telegram,  facsimile transmission
with  confirmation  of receipt,  or telex,  or by registered  or certified  mail
(postage  prepaid,  return  receipt  requested)  to the  respective  parties  as
follows:

          If to the Company, to:

                               Galileo Corporation
                               Galileo Park
                               P.O. Box 550
                               Sturbridge, MA 01566-0550
                               Attention:  President
                               Fax: 508-347-2270

                               with a copy to:

                               Palmer & Dodge LLP
                               One Beacon Street
                               Boston, MA 02108
                               Attention: David R. Pokross, Jr., Esq.
                               Fax: 617-227-4420

                               if to Investor, to:

                               Andlinger Capital XIII LLC
                               c/o Andlinger & Company, Inc.
                               303 South Broadway, Suite 229
                               Tarrytown, NY 10591
                               Attention: Stephen A. Magida
                               Fax: 914-332-4977

                               with a required copy to:

                               Dechert Price & Rhoads
                               30 Rockefeller Plaza
                               New York, NY 10112
                               Attention:  Paul Gluck, Esq.
                               Fax:  212-698-3599

                               If to Blais, to:

                               John F. Blais, Jr.
                               Optical Filter Corporation
                               Two Mercer Road
                               Natick, MA 01760
                               Fax:  508-613-0729

                               If to Speyer, to:

                               W. Kip Speyer
                               Leisegang Medical, Inc.
                               6401 Congress Avenue
                               Boca Raton, FL 33487
                               Fax:  561-997-1645


          or to such other  address  as the  Person to whom  notice is given may
have previously furnished to the others in writing in the manner set forth above
(provided  that  notice of any change of address  shall be  effective  only upon
receipt thereof).

          (e) Governing Law. The validity, performance,  construction and effect
of this  Agreement  shall be governed by and  construed in  accordance  with the
internal law of Delaware,  without  giving  effect to principles of conflicts of
laws.

          (f) Headings.  The headings in this  Agreement are for  convenience of
reference only and shall not constitute a part of this Agreement, nor shall they
affect their meaning, construction or effect.

          (g)  Counterparts.  This  Agreement  may be  executed  in two or  more
counterparts and by the 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 instrument.

          (h)  Further  Assurances.  Each party  shall  cooperate  and take such
action as may be reasonably requested by another party in order to carry out the
provisions  and purposes of this  Agreement  and the  transactions  contemplated
hereby.

          (i) Effectiveness; Termination. This Agreement shall be effective upon
the  consummation  of  the  transactions  contemplated  by  the  Stock  Purchase
Agreement and,  unless sooner  terminated,  shall  terminate ten years after the
date of this Agreement and any additional period permitted by law, provided that
the  indemnification  rights and obligations set forth in Section 6 hereof shall
survive the termination of this Agreement.

          (j) Remedies.  In the event of a breach or a threatened  breach by any
party to this  Agreement  of its  obligations  under this  Agreement,  any party
injured  or to be injured by such  breach,  in  addition  to being  entitled  to
exercise  all rights  granted by law,  including  recovery of  damages,  will be
entitled to specific  performance of its rights under this  Agreement,  it being
agreed by the parties that the remedy at law,  including  monetary damages,  for
breach of such provision will be inadequate  compensation  for any loss and that
any defense in any action for specific performance that a remedy at law would be
adequate is waived.

          (k) Party No Longer Owning Registrable  Securities.  If a party hereto
ceases to own any Registrable Securities, such party will no longer be deemed to
be  a   Stockholder   for  purposes  of  this   Agreement;   provided  that  the
indemnification  rights  and  obligations  set forth in  Section 6 hereof  shall
survive any such cessation of ownership.

          (l)  Pronouns.  Whenever  the context may require,  any pronouns  used
herein shall be deemed also to include the  corresponding  neuter,  masculine or
feminine forms.

          (m) No Effect on Employment.  Nothing herein contained shall confer on
any  Stockholder  the right to remain in the employ of the Company or any of its
subsidiaries or Affiliates.


<PAGE>

          IN WITNESS WHEREOF, the parties hereto have executed this Registration
Rights Agreement as of the day and year first above written.


                                            GALILEO CORPORATION


                                            By: /s/ W. Kip Speyer
                                                -----------------
                                                 Name: W. Kip Speyer
                                                 Title: President


                                            ANDLINGER CAPITAL XIII LLC


                                            By: /s/ Stephen A. Magida
                                                ---------------------
                                                Stephen A. Magida
                                                Title: Manager



                                            /s/ John F. Blais, Jr.
                                            ----------------------
                                            John F. Blais, Jr.



                                            /s/ W. Kip Speyer
                                            -----------------
                                            W. Kip Speyer


                                                            
                                                                Execution Copy

                             STOCKHOLDERS' AGREEMENT


     This is a STOCKHOLDERS' AGREEMENT  ("Agreement"),  dated December 22, 1998,
among GALILEO  CORPORATION,  a Delaware  corporation (the "Company"),  ANDLINGER
CAPITAL XIII LLC, a Connecticut limited liability company ("Investor"),  JOHN F.
BLAIS, JR. ("Blais") and W. KIP SPEYER  ("Speyer")  (Blais,  Speyer and Investor
are  sometimes  referred to  hereinafter  individually  as a  "Stockholder"  and
collectively as the "Stockholders").

                                   Background

     A. The Company and the Investor  have  entered  into a Securities  Purchase
Agreement  dated the date hereof (the "Stock  Purchase  Agreement")  pursuant to
which,  among other  things,  the  Company  will sell to the  Investor,  and the
Investor  will  purchase  from the Company,  certain  Shares of and Warrants for
Common  Stock of the  Company,  as such terms are defined in, and upon the terms
and subject to the conditions set forth in, the Stock Purchase Agreement.

     B. The Stockholders  wish to enter into this Agreement to set forth,  among
other things,  certain  limitations with respect to their ownership and transfer
of Securities upon the terms and subject to the conditions set forth herein.

                                      Terms

     In consideration of the promises, covenants and agreements set forth herein
and  in  the  Stock  Purchase  Agreement,   and  for  other  good  and  valuable
consideration,  the receipt and  sufficiency  of which are hereby  acknowledged,
each of the parties  hereto,  intending to be legally  bound  hereby,  agrees as
follows:

                                     1. Term

     1.1 Term.  This  Agreement  shall become  effective  concurrently  with the
closing of the  transactions  contemplated  by the Stock Purchase  Agreement and
shall remain in effect for a period of three years thereafter (such period being
the "Term").

                                  2. Covenants

     2.1 Covenants.  During the Term,  without the prior written consent of each
of the  other  Stockholders  party  hereto,  no  Stockholder  or  any  Permitted
Transferee of such Stockholder shall Transfer any Securities, except

          (a) pursuant to a bona fide  underwritten  public offering  registered
under  the  Securities  Act  which  provides  for a  widely  distributed  public
offering;

          (b) pursuant to transactions involving Securities registered under the
Securities Act pursuant to "demand" or "piggyback" registration rights under the
Registration Rights Agreement;

          (c) to a Permitted Transferee;

          (d) during each fiscal quarter of the Company, Blais and his Permitted
Transferees  may (i)  Transfer in the  aggregate  up to 75,000  shares of Common
Stock in one or more  transactions  and (ii)  pledge in the  aggregate  up to an
additional 50,000 shares of Common Stock in one or more pledges  provided,  that
(A) the pledgee is either reasonably  satisfactory to the Company or a financial
institution,  (B) the  obligations  secured  by such  pledge  provide  for  full
recourse  against Blais and (C) if at any time Blais  defaults on any obligation
secured by a pledge of Common Stock of the Company, then upon and following such
default and until such  default is cured or waived,  Blais may no longer  pledge
shares of Common Stock pursuant to this clause (ii) and the aggregate  number of
shares of Common  Stock  that may be  Transferred  pursuant  to clause (i) above
shall be reduced to 50,000 per fiscal quarter of the Company;

          (e)  during  each  fiscal  quarter  of the  Company,  Speyer  and  his
Permitted Transferees may Transfer an aggregate of up to 10,000 shares of Common
Stock in one or more transactions;

          (f)  pursuant  to a  tender  offer  made  to all  the  holders  of the
Company's Common Stock; and

          (g) pursuant to any transaction  duly approved by the  stockholders of
the Company.

          The number of shares  permitted to be Transferred or pledged  pursuant
to  paragraphs  (d) and (e) shall in each case be adjusted to take into  account
the pro rata  effect of stock  dividends,  stock  distributions,  stock  splits,
reverse stock splits, stock combinations, recapitalizations,  reclassifications,
subdivisions, conversions or similar transactions in respect of Common Stock.

     2.2 Certain Transferees To Be Bound. No Stockholder or Permitted Transferee
may  effect  any  Transfer  to a  Permitted  Transferee  unless  such  Permitted
Transferee  executes an agreement  pursuant to which such  Permitted  Transferee
agrees to be bound by the terms and provisions of this  Agreement  applicable to
the transferor. Any purported Transfer in violation of this Section 2.2 shall be
null and void and of no force and effect and the purported transferee shall have
no rights or privileges in or with respect to the Company. The Company shall not
register or record or permit a transfer agent to register or record on the stock
record  books of the Company any  purported  Transfer to a Permitted  Transferee
unless and until it has  received  evidence  that such  Transfer and the parties
thereto have complied with this Section 2.2. In no event shall any Transferee of
Securities other than a Transferee pursuant to Section 2.1(c) be subject to this
Section 2.2.

     2.3  Other   Restrictions  May  Apply.   Each  Stockholder  (and  Permitted
Transferee  who  becomes  subject  to  this  Agreement)  acknowledges  that  the
restrictions  set forth herein are in  furtherance  and not in limitation of any
other  restrictions  that may be imposed by the Securities Act, the Exchange Act
or other U.S. federal securities laws and the rules and regulations  thereunder,
state  securities  laws and the  rules  and  regulations  thereunder,  any other
governmental  authority or any rules and regulations of The Nasdaq Stock Market,
Inc. or the National Association of Securities Dealers, Inc.

                                 3. Definitions.

     For  purposes  of this  Agreement,  the  following  terms  shall  have  the
following meanings:

     3.1 Affiliate.  An "Affiliate" of a person shall have the meaning set forth
in Rule  12b-2 of the  Exchange  Act as in effect  on the date  hereof  and,  in
addition,  shall include  "Associates" (as defined in Rule 12b-2 of the Exchange
Act as in effect on the date hereof) of such Person and its Affiliates.

     3.2 Common Stock. "Common Stock" means the common stock, par value $.01 per
share, of the Company. 

     3.3 Exchange Act. "Exchange Act" means the Securities Exchange Act of 1934,
as amended,  and the rules and regulations  promulgated  thereunder as in effect
from time to time.

     3.4 Permitted Transferee. "Permitted Transferee" means

          (a) in the case of Blais or any  Permitted  Transferee  of Blais,  (i)
Blais's spouse or children or grandchildren  (in each case,  natural or adopted)
or any trust for the sole  benefit of Blais or  Blais's  spouse or  children  or
grandchildren (in each case, natural or adopted) and (ii) the heirs,  executors,
administrators or personal  representatives  upon the death of Blais or upon the
incompetency  or  disability  of  Blais  for  purposes  of  the  protection  and
management of his assets;

          (b) in the case of Speyer or any Permitted  Transferee of Speyer,  (i)
Speyer's spouse or children or grandchildren (in each case,  natural or adopted)
or any trust for the sole  benefit of Speyer or  Speyer's  spouse or children or
grandchildren (in each case, natural or adopted) and (ii) the heirs,  executors,
administrators or personal  representatives upon the death of Speyer or upon the
incompetency  or  disability  of  Speyer  for  purposes  of the  protection  and
management of his assets;

          (c) in the case of Investor or any  Permitted  Transferee of Investor,
(i) the members of Investor,  (ii) the spouse or children or  grandchildren  (in
each case,  natural or adopted) or any trust for the sole  benefit of the spouse
or children or grandchildren (in each case, natural or adopted) of any member of
Investor, (iii) the heirs, executors, administrators or personal representatives
upon the death of any member of Investor or upon the  incompetency or disability
of any member of Investor for purposes of the  protection  and management of the
assets of such member; and (iv) any Affiliate of Investor or its members.

     3.5 Person. "Person" means any natural person, group, corporation,  limited
liability company, partnership, business association, trust, firm, government or
agency or political subdivision thereof, or other entity of whatever nature.

     3.6 Registration  Rights Agreement.  "Registration  Rights Agreement" means
the  Registration  Rights  Agreement dated the date hereof among the Company and
the Stockholders.

     3.7 Securities.  "Securities"  means the shares of Common Stock held by any
party  hereto and all other  securities  of the Company  (or a successor  to the
Company)  received  on  account of  ownership  of such  shares of Common  Stock,
including all securities  issued in connection  with any stock  dividend,  stock
distribution,   stock   split,   reverse   stock   split,   stock   combination,
recapitalization,   reclassification,   subdivision,   conversion   or   similar
transaction in respect thereof, but excluding any securities received on account
of such ownership in any merger or consolidation.

     3.8 Securities Act.  "Securities  Act" means the Securities Act of 1933, as
amended, and the rules and regulations  promulgated thereunder as in effect from
time to time.

     3.9  Transfer.   "Transfer"  means  the  making  of  any  sale,   exchange,
assignment, hypothecation, gift, security interest, pledge or other encumbrance,
or any contract  therefor,  any voting trust or other  agreement or  arrangement
with respect to the transfer of voting rights or any other  beneficial  interest
in any of the  Securities,  the creation of any other claim thereto or any other
transfer or disposition whatsoever, whether voluntary or involuntary,  affecting
the right, title, interest or possession in or to such Securities.

                                4. Miscellaneous

     4.1 Legends. Each certificate or instrument representing Securities subject
to the terms of this  Agreement  will bear the following  legends in addition to
any other legend required by law:

     THE SECURITIES REPRESENTED BY THIS CERTIFICATE ARE SUBJECT TO THE TERMS AND
     CONDITIONS OF A  STOCKHOLDERS'  AGREEMENT AMONG THE COMPANY AND THE HOLDERS
     SPECIFIED  THEREIN,  A COPY OF WHICH  AGREEMENT IS ON FILE AT THE PRINCIPAL
     OFFICE OF THE  COMPANY.  THE SALE,  TRANSFER  OR OTHER  DISPOSITION  OF THE
     SECURITIES IS SUBJECT TO THE TERMS OF SUCH AGREEMENT AND THE SECURITIES ARE
     TRANSFERABLE ONLY UPON PROOF OF COMPLIANCE THEREWITH.

     4.2 Governing Law;  Severability.  This Agreement  shall be governed by the
laws of the  State  of  Delaware  without  giving  effect  to  conflicts  of law
principles thereof. If any provision of this Agreement shall be declared invalid
or unenforceable by a court of competent jurisdiction,  the remaining provisions
hereof shall remain valid and shall continue in effect.

     4.3 Binding Effect on Successor.  This Agreement  shall be binding upon and
inure  to  the  benefit  of the  Company  and  the  Stockholders,  and to  their
respective  successors  and permitted  assigns,  including any successors to the
Company or the  Stockholders or their  businesses or assets as the result of any
merger, consolidation,  reorganization, transfer of assets or otherwise, and any
subsequent successor thereto,  without the execution or filing of any instrument
or the performance of any act.

     4.4 Specific Performance.  The Stockholders and the Company acknowledge and
agree that irreparable injury to the other party would occur in the event any of
the  provisions of this  Agreement  were not performed in accordance  with their
specific  terms or were  otherwise  breached  and that such injury  would not be
compensable  in  damages.  It is  accordingly  agreed that each part hereto (the
"Moving  Party") shall be entitled to specific  enforcement  of, and  injunctive
relief to prevent  any  violation  of the terms  hereof,  and the other  parties
hereto will not take action, directly or indirectly, in opposition to the Moving
Party  seeking  such  relief on the grounds  that any other  remedy or relief is
available at law or in equity.  The parties  further agree that no bond shall be
required as a condition to the granting of any such relief.

     4.5 No Waiver. Any waiver by any party of a breach of any provision of this
Agreement  shall  not  operate  as or be  construed  to be a waiver of any other
breach  of such  provision  or of any  breach  of any  other  provision  of this
Agreement. The failure of a party to insist upon strict adherence to any term of
this  Agreement  on one or more  occasions  shall not be  considered a waiver or
deprive that party of the right  thereafter  to insist upon strict  adherence to
that term or any other term of this Agreement.

     4.6 Entire Agreement;  Amendments. This Agreement,  together with the Stock
Purchase Agreement and other agreements entered into in connection  herewith and
therewith,  constitute the entire  understanding  of the parties with respect to
the subject  matter hereof and thereof.  This Agreement may be amended only by a
written  instrument duly executed by the parties or their respective  successors
or assigns.

     4.7  Headings.  The section  headings  contained in the  Agreement  are for
reference  purposes  only  and  shall  not  effect  in any  way the  meaning  or
interpretation of this Agreement.

     4.8   Notices.   All   notices,   requests,   claims,   demands  and  other
communications  hereunder  shall be in writing  and shall be given (and shall be
deemed to have been duly given upon receipt) by hand delivery,  facsimile,  mail
(registered  or  certified,   postage  prepaid,  return  receipt  requested)  or
recognized  express  carrier or delivery  service to the  respective  parties as
follows:

                   If to the Company, to:

                                Galileo Corporation
                                Galileo Park
                                P.O. Box 550
                                Sturbridge, MA 01566-0550
                                Attention:  President
                                Fax: 508-347-2270

                                with a copy to:

                                Palmer & Dodge LLP
                                One Beacon Street
                                Boston, MA 02108
                                Attention: David R. Pokross, Jr., Esq.
                                Fax: 617-227-4420

                                if to Investor, to:

                                Andlinger Capital XIII LLC
                                c/o Andlinger & Company, Inc.
                                303 South Broadway, Suite 229
                                Tarrytown, NY 10591
                                Attention: Stephen A. Magida
                                Fax: 914-332-4977

                                with a required copy to:

                                Dechert Price & Rhoads
                                30 Rockefeller Plaza
                                New York, NY 10112
                                Attention:  Paul Gluck, Esq.
                                Fax:  212-698-3599

                                If to Blais, to:

                                John F. Blais, Jr.
                                Optical Filter Corporation
                                Two Mercer Road
                                Natick, MA 01760
                                Fax:  508-613-0729

                                If to Speyer, to:

                                W. Kip Speyer
                                Leisegang Medical, Inc.
                                6401 Congress Avenue
                                Boca Raton, FL 33487
                                Fax:  561-997-1645


or to such  other  address  as the  Person  to whom  notice  is  given  may have
previously furnished to the others in writing in the manner set forth above.

     4.9 Further Assurances. From time to time on and after the date hereof, the
Company and the  Stockholders,  as the case may be, shall deliver or cause to be
delivered to the other party hereto such further  documents and  instruments and
shall do and cause to be done such  further acts as the other party hereto shall
reasonably  request to carry out more effectively the provisions and purposes of
this  Agreement,  to  evidence  compliance  herewith  or to  assure  that  it is
protected in acting hereunder.

     4.10 Counterparts.  This Agreement may be executed in counterparts, each of
which shall be deemed an original and all of which  together shall be deemed one
and the same instrument.

<PAGE>

     4.11 IN WITNESS  WHEREOF,  the Company and the  Stockholders  have executed
this Agreement,  or have caused this Agreement to be executed by duly authorized
officers, as of the day and year first above written.

                                             GALILEO CORPORATION


                                             By: /s/ W. Kip Speyer
                                                 -----------------
                                                   Name:  W. Kip Speyer
                                                   Title: President


                                             ANDLINGER CAPITAL XIII LLC


                                             By: /s/ Stephen A. Magida
                                                 ---------------------
                                                   Stephen A. Magida
                                                   Title: Manager



                                                  /s/ John F. Blais, Jr.
                                                  ----------------------
                                                  John F. Blais, Jr.



                                                  /s/ W. Kip Speyer
                                                  -----------------
                                                  W. Kip Speyer


                                                            Execution Copy
                                                         
                           ANDLINGER CAPITAL XIII LLC
                               OPERATING AGREEMENT



                  OPERATING  AGREEMENT  dated as of December  14, 1998 among the
persons whose names appear on Schedule A hereto, as members (the "Members").

                              W I T N E S S E T H:


                  WHEREAS the Members  have formed a limited  liability  company
(the "LLC")  under the  Connecticut  Limited  Liability  Company Act (the "Act")
pursuant to the Articles of Organization (the "Articles of Organization")  filed
with the Office of the  Secretary of State of  Connecticut  (the  "Secretary  of
State"); and

                  WHEREAS  the Members  wish to set forth the terms  pursuant to
which the LLC will be formed, managed and operated.

                  NOW,  THEREFORE,  in  consideration of the mutual promises and
agreements made herein, the parties, intending to be legally bound hereby, agree
as follows:

                                    ARTICLE I
                                     GENERAL

                  1.01. Offices. The principal office of the LLC shall be at 105
Harbor Drive,  Stamford CT 06902. The LLC may operate at such additional offices
as it shall deem advisable.

                  1.02.  Purpose.  The  LLC  (i) is  organized  to  hold  equity
interests in a single entity,  (ii) has all powers provided by law and (iii) may
use those powers to any lawful purpose.

                  1.03.  Term.  The LLC shall  continue in full force and effect
until December 31, 2025 unless earlier terminated.
                                          
                  1.04.  Name.  The name of the LLC shall be "ANDLINGER  CAPITAL
XIII LLC".
                                                        
                  1.05.  Registered  Agent and Office.  The registered agent for
service of process and the  registered  office shall be that person and location
stated in the Articles of Organization. In the event the registered agent ceases
to act as such for any reason,  the Members shall promptly  appoint a substitute
registered agent or file notice of a change in address, as the case may be.

                  1.06. Additional Members. The Members in their sole discretion
shall be entitled to admit any person as a new Member by a vote of a majority in
interest  of the  Members  voting in  accordance  with  their  voting  Units (as
described in Section 3.02 hereof).

                                   ARTICLE II
                                   MANAGEMENT

                  2.01.  Management  Rights.  (a) Except as otherwise  expressly
provided  herein,  all  management  rights  of the LLC  shall be  vested  in the
Manager.  The initial Manager shall be Stephen A. Magida. The Manager shall have
complete discretion to exercise any voting rights with respect to any securities
owned  by the LLC  and to  sell or  otherwise  dispose  of such  securities  for
adequate  consideration  and to exercise  any other  rights with respect to such
securities;  provided, however, that upon notice to the Manager, the Members, by
the vote of a majority  in interest of the  Members  voting in  accordance  with
their voting Units, may direct the Manager as to the manner in which such voting
rights shall be exercised and whether and to what extent such  securities  shall
be sold or otherwise disposed of.

                  (b) A  Manager  may  resign  at any time by an  instrument  in
writing  delivered to the Members,  but such resignation  shall not be effective
until the effective election of a successor Manager by the vote of a majority in
interest of the Members voting in accordance with their voting Units.

                  (c) Upon a Manager becoming domiciled in Florida, or otherwise
having a Florida tax situs for Florida  intangible  tax  purposes,  that Manager
shall be  automatically  removed  and a  successor  Manager  shall be elected as
provided above.

                  2.02.  Members'  Rights.  Actions  required or permitted to be
taken by the Members  hereunder shall be taken with the consent of a majority in
interest of the Members,  voting in proportion to the number of voting Units set
forth  opposite  such  Member's  name on  Schedule A hereto,  as the same may be
updated from time to time.

                  2.03.  No  Liability  of Member or Manager;  Reimbursement  of
Expenses.  (a) No Member and no Manager  shall be liable for any  obligation  or
liability of the LLC.

                  (b)  The  Manager  shall  be  reimbursed  for  all  reasonable
expenses  incurred  in the  management  of the LLC. A Manager  may also serve as
legal  counsel to the LLC and shall be  compensated  for his or her  services in
accordance  with his or her schedule of fees in effect from time to time or such
other amount as may be agreed upon.

                  2.04. Liability and Indemnification.  (a) Neither a Member nor
the  Manager  shall  be  liable,  responsible  or  accountable,  in  damages  or
otherwise, to any other Member or to the LLC for any act performed by the Member
or Manager with respect to LLC matters,  except for fraud,  gross  negligence or
willful misconduct.

                  (b) The LLC shall  indemnify  each  Member and the Manager for
any act  performed  by the Member or the Manager  with  respect to LLC  matters,
except for fraud,  gross  negligence or willful  misconduct.  The LLC shall also
indemnify each Member and the Manager for any liability  incurred by such person
in the course of serving as an officer or director of any  corporation  or other
entity,  the  securities  of which  are held by the LLC or in which  the LLC has
invested,  except  for  fraud,  gross  negligence  or  willful  misconduct.  The
provisions  of this Section  2.04 shall  continue to afford  protection  to each
person  who is or was a Member or Manager  regardless  of  whether  such  person
remains a Member or Manager of the LLC.

                                   ARTICLE III
                    ACCOUNTING, ALLOCATIONS AND DISTRIBUTIONS

                  3.01.  Accounting.  The  Manager  shall  maintain  a  "Capital
Account" for each of the Members.  "Capital  Account" shall mean with respect to
any Member,  such Member's  initial or subsequent  capital  contributions to the
LLC, increased by such Member's share of any income (which shall include capital
gains),  reduced by such Member's share of any loss (which shall include capital
losses)  of the LLC and the  amount  of any  distributions  of cash or the  fair
market  value of assets  distributed  by such LLC to such  Member.  The Members'
initial capital contributions shall be set forth on Schedule A hereto.

                  3.02. Units and Special Allocations of Profits and Losses. (a)
Upon  becoming a Member of the LLC, a Member shall be credited  with Units which
represent such Member's interests in the underlying assets of the LLC. Units may
be designated as Common Stock Units  (representing  the common stock held by the
LLC) which are voting Units, or as Warrant Units (representing the warrants held
by the LLC) which are nonvoting Units, or such other  designation as the Manager
shall  determine.  The Manager  shall keep an up to date  schedule of all of the
Units   allocated   to  each   Member  and  the   designation   of  such  Units.
Notwithstanding  the foregoing,  each Member shall have and own interests in the
LLC (but not the LLC property itself).

                  (b) Income (which shall include capital gains) and loss (which
shall include  capital  losses)  shall be specially  allocated to the Members in
accordance  with the income and loss  attributable to the Units credited to each
Member.

                  3.03.  Distributions.  The LLC may  distribute  to the Members
cash or property; such distributions shall be to such persons, at such times and
in such amounts as may be determined by the Manager from time to time; provided,
however, that distributions to any Member shall not exceed such Member's Capital
Account and upon a  dissolution  of the LLC,  distributions  to Members shall be
governed by Article VII hereof.  Such  distributions  may be made by the Manager
even if such distribution would cause the LLC to cease to have any assets.

                                   ARTICLE IV
                               PROHIBITED CONDUCT

                  4.01. Transactions with the LLC. Except as expressly permitted
hereunder, no Member other than the Manager may act on behalf of the LLC for any
purpose;  no Member  including  the Manager may use the LLC's name,  credit,  or
property  for other than LLC  purposes.  If a Member  enters into a  transaction
involving  the LLC  that is not  within  the  scope of its  authority,  and such
transaction  results in any loss to the LLC,  the loss shall be borne  solely by
that Member.

                  4.02.  Prohibited  Acts.  Without  the prior  approval  of the
Members,  by the  vote of a  majority  in  interest  of the  Members  voting  in
accordance with their voting Units, the Manager may not:

                  (a)  Do any act in contravention of this Agreement;

                  (b)  Borrow  any  funds  or lend  any  money in the name or on
behalf of the LLC;

                  (c) Pledge, mortgage,  hypothecate,  or encumber any assets of
the LLC or any interest in the LLC;

                  (d) Make,  execute or deliver  any  assignment  of LLC assets,
including any assignment of assets for the benefit of creditors;

                  (e)  Execute any bond,  guaranty,  or  confession  of judgment
relating to any part of the LLC's assets or any interest therein; or

                  (f) Enter onto any  agreement,  contract or  commitment of the
LLC not in the ordinary course of business of managing the LLC or which requires
payments  by the LLC in  excess  of $ 50,000  over  the term of such  agreement,
contract or commitment.

                                    ARTICLE V
                     BOOKS, RECORDS, ACCOUNTING AND REPORTS

                  5.01. Books and Records. The LLC's books and records, together
with all of the  documents  and papers  pertaining  to the  business of the LLC,
shall  be kept at the  principal  office  of the LLC or at 303  South  Broadway,
Tarrytown,  New  York  10591and  at all  reasonable  times  shall be open to the
inspection  of and may be copied and excerpts  taken  therefrom by any Member or
such Member's duly authorized  representative,  provided that such inspection is
made in good  faith and  without  any  intent  to  damage  the LLC or any of the
Members.

                  5.02.  Accounting  Year.  The  fiscal  and tax year of the LLC
shall be a calendar year.

                  5.03. Tax Returns.  The Manager shall cause income tax returns
for the LLC to be prepared  and timely filed with the  appropriate  authorities.
Each Member of the LLC shall  cooperate  with and assist in the  preparation  of
such tax returns.

                  5.04.  Bank Accounts.  All funds of the LLC shall be deposited
in the name of the LLC in such  bank  account  or  accounts  as shall be  deemed
appropriate by the Manager. All withdrawals  therefrom shall be made upon checks
signed on behalf of the Manager by any person or persons approved by the Manager
to sign such checks.

                                   ARTICLE VI
                     TRANSFERABILITY OF A MEMBER'S INTEREST

                  6.01.   Restrictions  on  Transfers  of  Interest.   No  sale,
exchange,  transfer or assignment of a Member's  interest in the LLC may be made
(other than by  operation of law) without the consent of the Members by the vote
of a majority in interest of the Members voting in accordance  with their voting
Units. Any attempted transfer of a Member's interest in the LLC in contravention
of this Section 6.01 shall be void.

                                   ARTICLE VII
                                   DISSOLUTION

                  7.01.  Dissolution  of LLC.  The LLC  will  dissolve  upon the
earlier of December 31, 2025 or the written  consent of the majority in interest
of the  Members  voting in  accordance  with their  voting  Units.  In  settling
accounts  after  dissolution,  the  assets  of the LLC  shall be paid out in the
following order:

                  (1) first, to creditors other than Members (whether by payment
or establishment of reserves), in the order or priority as provided by law;

                  (2) second,  to the Members  for  liabilities  other than with
respect to Capital Accounts; and

                  (3) third,  to the Members in  proportion  to the  balances in
their Capital Accounts.

No Member shall be obligated to contribute to the LLC any amount with respect to
the negative amount, if any, of such Member's Capital Account.

                                  ARTICLE VIII
                                   AMENDMENTS

                  8.01.  Adoption  of  Amendments.  The vote of the  majority in
interest of the Members  voting in  accordance  with their voting Units shall be
required to amend this  Agreement or to grant waivers from any provision of this
Agreement or to take any other action permitted to be taken by Members under the
Act.

                                   ARTICLE IX
                            MISCELLANEOUS PROVISIONS

                  9.01.  Intent of the Members.  It is the express  intention of
the Members that this  Agreement and the Articles of  Organization  shall be the
sole  sources  of  agreement  of the  parties  and,  except  to the  extent  (a)
provisions of the Code or  regulations  of the  Department of the Treasury under
the Code,  as lawfully  changed from time to time,  are  incorporated  herein by
reference,  or (b) any  provision of this  Agreement is expressly  prohibited or
ineffective  under the Act, this Agreement  shall govern,  even if  inconsistent
with, or different  than, the provisions of the Act or any other law or rule. To
the extent any provision of this  Agreement is prohibited or  ineffective  under
the Act, it shall be considered  amended to the extent necessary to be effective
under the Act.

                  9.02. Number and Gender.  Wherever from the context it appears
appropriate, each term stated in either the singular or the plural shall include
the singular and the plural, and pronouns stated in the masculine,  feminine and
neuter gender shall include the masculine, feminine and neuter.

                  9.03. Headings and  Cross-References.  The various headings in
this  Agreement  are  included  for  convenience  only and shall not  affect the
meaning and  interpretation  of any provision of this  Agreement.  References in
this  Agreement  to  Section  names  or  numbers  are to such  Sections  of this
Agreement unless otherwise specified.

                  9.04.  Governing Law. This Agreement  shall be governed by and
construed  in  accordance  with the internal  laws of the State of  Connecticut,
without  reference  to its  conflict  of laws  provisions  and the  obligations,
rights,  and remedies of the parties hereunder shall be determined in accordance
with such laws.

                  9.05.  Notices.  All notices under this Agreement  shall be in
writing,  personally  delivered  or mailed by  certified  mail,  return  receipt
requested.

                  9.06.  Counterparts.  This Agreement may be executed in two or
more  counterparts and by different  parties on separate  counterparts,  each of
which shall be an original,  but all of which together shall  constitute one and
the same instrument.

                  IN WITNESS WHEREOF the undersigned have executed and delivered
this Operating Agreement as of the date first above written.

                                               /s/ Gerhard R. Andlinger
                                               ------------------------
                                               Gerhard R. Andlinger, as Member



                                               
                                               /s/ Stephen A. Magida
                                               ---------------------
                                               Stephen A. Magida, as Member and 
                                                  as Manager


                                               /s/ Charles E. Ball
                                               -------------------
                                               Charles E. Ball, as Member



                                               /s/ John P. Kehoe
                                               ----------------- 
                                               John P. Kehoe, as Member


<PAGE>

                           Andlinger Capital XIII LLC
                                   Schedule A


   
<TABLE>
<S>                          <C>                     <C>                        <C>   
                                                                 
                              Initial Capital                            
Name                          Contribution            Common Stock Units         Warrant Units
- --------------                ----------------        ------------------         -------------

Gerhard R. Andlinger           $5,550,000                1,850,000                1,850,000

Charles E. Ball                   300,000                  100,000                  100,000

Stephen A. Magida                  75,000                   25,000                   25,000
  
John P. Kehoe                      75,000                   25,000                   25,000

</TABLE>



                                    EXHIBIT V

     JOINT FILING AGREEMENT AMONG ANDLINGER CAPITAL XIII LLC, A CONNECTICUT
      LIMITED LIABILITY COMPANY, STEPHEN A. MAGIDA, GERHARD R. ANDLINGER,
                       CHARLES E. BALL, AND JOHN P. KEHOE

                  WHEREAS, in accordance with Rule 13d-1(f) under the Securities
and  Exchange  Act of  1934  (the  "Act"),  only  one  joint  statement  and any
amendments thereto need to be filed whenever one or more persons are required to
file such a statement or any amendments thereto pursuant to Section 13(d) of the
Act with respect to the same  securities,  provided  that said persons  agree in
writing that such statement or amendments  thereto is filed on behalf of each of
them;

                  NOW, THEREFORE, the parties hereto agree as follows:

ANDLINGER CAPITAL XIII LLC, STEPHEN A. MAGIDA, GERHARD R. ANDLINGER,  CHARLES E.
BALL, AND JOHN P. KEHOE hereby agree, in accordance with Rule 13d-1(f) under the
Act, to file a statement on Schedule  13D relating to their  ownership of Common
Stock of the Issuer and do hereby  further  agree that said  statement  shall be
filed on behalf of each of them.

                                           ANDLINGER CAPITAL XIII LLC


Dated:  December 28, 1998                  By: /s/ Stephen A. Magida
                                               ---------------------
                                                    Name: Stephen A. Magida
                                                    Title: Manager


Dated:  December 28, 1998                  By: /s/ Stephen A. Magida
                                               ---------------------
                                                    Name: Stephen A. Magida


Dated:  December 28, 1998                  By: /s/ Gerhard R. Andlinger
                                               ------------------------
                                                    Name: Gerhard R. Andlinger


Dated:  December 28, 1998                  By: /s/ Charles E. Ball
                                               -------------------
                                                    Name: Charles E. Ball


Dated:  December 28, 1998                  By: /s/ John P. Kehoe
                                               -----------------
                                                    Name: John P. Kehoe




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