QUIXOTE CORP
8-K, 1998-12-16
PHONOGRAPH RECORDS & PRERECORDED AUDIO TAPES & DISKS
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<PAGE>

                                   UNITED STATES
                         SECURITIES AND EXCHANGE COMMISSION
                              Washington, D.C.  20549
                                          
                                          
                                          
                                     FORM 8 - K
                                          
                                   CURRENT REPORT
                                          
                                          
                        Pursuant to Section 13 or 15 (d) of
                        the Securities Exchange Act of 1934
                                          
                                          
                                          
                         Date of Report:  December 9, 1998
                                          
                                          
                                          
                                          
                                QUIXOTE CORPORATION
- ------------------------------------------------------------------------------
               (Exact name of registrant as specified in its charter)
                                          
                                          
                                      Delaware
- ------------------------------------------------------------------------------
                   (State or other jurisdiction of incorporation)
                                          
                                          
               0-7903                                    36-2675371
         -------------------                         --------------------
      (Commission File Number)                      (I.R.S. Employer 
                                                     Identification Number)


            One East Wacker Drive, Suite 3000, Chicago, Illinois  60601
- -----------------------------------------------------------------------------
             (Address of principal executive offices)        (zip code)
                                          


                                   (312) 467-6755
- -----------------------------------------------------------------------------
                (Registrant's telephone number, including area code)

                                      
<PAGE>

Item 1.   Not Applicable.

Item 2.   Acquisition or Disposition of Assets.

     On December 9, 1998, Quixote Corporation ("Quixote") purchased all of the
outstanding stock of Nu-Metrics, Inc. ("Nu-Metrics") from its six shareholders. 
Nu-Metrics is based in Uniontown, Pennsylvania, and is engaged in the business
of developing and manufacturing electronic measuring instruments for the highway
transportation industry.  Nu-Metrics' traffic sensing and distance measuring
devices are sold worldwide.

     The purchase price of $14,900,000 (less adjustments of $1,020,000 based 
on tax holdbacks and changes in the net assets of Nu-Metrics from June 30, 
1998, to September 30, 1998) was paid in cash.  A final determination of the 
purchase price based on the value of the net assets as of November 30, 1998, 
will be made in January 1999.  In January 1999, Quixote will also pay 
$100,000 to the principal shareholder of Nu-Metrics in connection with his 
covenants to refrain from competition.  When acquired, Nu-Metrics had long 
term debt of approximately $1.03 million, of which Quixote intends to repay 
approximately $463,000 in December 1998.  Quixote borrowed funds on its line 
of credit to make this acquisition.

     Quixote intends to continue the Nu-Metrics business operations in 
Uniontown, Pennsylvania.  Quixote has transferred all of the Nu-Metrics stock 
to its wholly-owned subsidiary, TranSafe Corporation.

     Quixote has determined that Nu-Metrics is a significant subsidiary and will
file separate company financial statements and pro forma financial information
within sixty (60) days of December 9, 1998.

Items 3 and 4.   Not Applicable.

Item 5.   Other Events.

     On December 14, 1998 Quixote and its formerly owned subsidiary, Disc
Manufacturing, Inc., ("DMI"), entered into a Confidential Settlement Agreement
and Release in final settlement of litigation pending in the United States
District Court for the District of Delaware.  The litigation includes a lawsuit,
Civil Action No. 95-21-SLR, brought by Discovision Associates against DMI for
infringement of certain patents related to optical disc technology as well as a
lawsuit, Civil Action No. 95-345-SLR, brought by DMI against Discovision
Associates, Pioneer Electronic Corporation, Pioneer Electronics (USA) Inc. and
Pioneer Electronics Capital Inc. for violations of the antitrust laws and acts
of unfair competition.  The Company's press release describing the settlement is
attached hereto and incorporated herein as Exhibit 2.3.  See the Company's Form
10-K Report for the fiscal year ended June 30, 1998, Item 3, for additional
information concerning these lawsuits.

Item 6.   Not Applicable.

Item 7.  Financial Statements and Exhibits.

 (c) Exhibits.

     Exhibit 2.1.  Stock Purchase Agreement by and among Quixote Corporation and
     Nu-Metrics, Inc. and Harry R. Sampey, Ph.D., Brenda J. Auer, Christine C.
     Sampey, Kim A. Sampey, Vicki L. Sampey and Karen Singo dated as of
     November 30, 1998. 
     
     Exhibit 2.2.  Press release dated December 11, 1998.
     
     Exhibit 2.3.  Press release dated December 15, 1998.

                                      
<PAGE>

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

                                   QUIXOTE CORPORATION
                                   -----------------------------
Date: December 16, 1998            /s/ Daniel P. Gorey
- ------------------------           -----------------------------
                                   By:  Daniel P. Gorey
                                   Its: Vice President, Chief 
                                        Financial Officer and 
                                        Treasurer 
 

<PAGE>

                                                           EXECUTION DOCUMENT

                                                           Exhibit 2.1

===============================================================================
===============================================================================



                               STOCK PURCHASE AGREEMENT

                                     By and Among

                                 QUIXOTE CORPORATION

                                         and

                                   NU-METRICS, INC.
                                          
                                        and
                                          
                              HARRY R. SAMPEY, Ph.D, 
                                  BRENDA J. AUER,
                                CHRISTINE C. SAMPEY,
                                   KIM A. SAMPEY
                                VICKI L. SAMPEY and
                                    KAREN SINGO
                                          
                                          
                           Dated as of November 30, 1998



===============================================================================
===============================================================================
<PAGE>
                                  TABLE OF CONTENTS

<TABLE>
<CAPTION>
<S>                                                                               <C>
ARTICLE I

      TERMS OF PURCHASE AND SALE . . . . . . . . . . . . . . . . . . . . . . . . . .2
      1.1   Purchase and Sale of the Shares. . . . . . . . . . . . . . . . . . . . .2
      1.2   Closing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
      1.3   Payment of Purchase Price. . . . . . . . . . . . . . . . . . . . . . . .2
      1.4   Calculation of Purchase Price. . . . . . . . . . . . . . . . . . . . . .2
      1.5   Tax and Accounting . . . . . . . . . . . . . . . . . . . . . . . . . . .3
      1.6   Holdback . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3

ARTICLE II

      PURCHASE PRICE ADJUSTMENTS . . . . . . . . . . . . . . . . . . . . . . . . . .3
      2.1   Adjustment Amount. . . . . . . . . . . . . . . . . . . . . . . . . . . .3
      2.2   Net Assets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4

ARTICLE III

      REPRESENTATIONS AND WARRANTIES OF NU-METRICS AND THE SHAREHOLDERS. . . . . . .4
      3.1   Organization and Qualification . . . . . . . . . . . . . . . . . . . . .4
      3.2   Authority. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
      3.3   Capitalization . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
      3.4   Title to Shares. . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
      3.5   Consents and Approvals . . . . . . . . . . . . . . . . . . . . . . . . .6
      3.6   Absence of Conflicts . . . . . . . . . . . . . . . . . . . . . . . . . .6
      3.7   Financial Statements:  Accounts Receivable . . . . . . . . . . . . . . .6
      3.8   Absence of Undisclosed Liabilities . . . . . . . . . . . . . . . . . . .7
      3.9   Absence of Certain Changes or Events . . . . . . . . . . . . . . . . . .7
      3.10  Intentionally Omitted. . . . . . . . . . . . . . . . . . . . . . . . . .8
      3.11  Real and Personal Property; Inventories. . . . . . . . . . . . . . . . .8
      3.12  Patents, Trademarks. Etc . . . . . . . . . . . . . . . . . . . . . . . .9
      3.13  Employees. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
      3.14  Contracts and Commitments. . . . . . . . . . . . . . . . . . . . . . . 10
      3.15  Licenses and Royalties . . . . . . . . . . . . . . . . . . . . . . . . 11
      3.16  Government Contracts . . . . . . . . . . . . . . . . . . . . . . . . . 11
      3.17  Product Warranties and Liabilities . . . . . . . . . . . . . . . . . . 11
      3.18  Insurance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
      3.19  Litigation and Administrative Proceedings. . . . . . . . . . . . . . . 12
      3.20  Tax Matters. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
            3.20.1      Corporation Matters. . . . . . . . . . . . . . . . . . . . 13
</TABLE>
                                            i
<PAGE>
<TABLE>
<CAPTION>
<S>                                                                               <C>
            3.20.2      All Returns Filed. . . . . . . . . . . . . . . . . . . . . 13
            3.20.3      All Taxes Paid . . . . . . . . . . . . . . . . . . . . . . 13
            3.20.4      Examinations, Etc. . . . . . . . . . . . . . . . . . . . . 13
            3.20.5      Withholding. . . . . . . . . . . . . . . . . . . . . . . . 13
            3.20.6      Foreign Person, Etc. . . . . . . . . . . . . . . . . . . . 14
            3.20.7      Parachute Payments . . . . . . . . . . . . . . . . . . . . 14
            3.20.8      Accounting; Tax Attributes . . . . . . . . . . . . . . . . 14
            3.20.9      Prior Consolidated Groups. . . . . . . . . . . . . . . . . 14
      3.21  Compliance with Laws.. . . . . . . . . . . . . . . . . . . . . . . . . 14
      3.22  Environmental Matters. . . . . . . . . . . . . . . . . . . . . . . . . 14
      3.23  Employee Benefits. . . . . . . . . . . . . . . . . . . . . . . . . . . 16
      3.24  Licenses and Permits . . . . . . . . . . . . . . . . . . . . . . . . . 19
      3.25  Relations With Suppliers and Customers . . . . . . . . . . . . . . . . 19
      3.26  Interests in Competitors, Suppliers and Customers. . . . . . . . . . . 19
      3.27  Employment Matters . . . . . . . . . . . . . . . . . . . . . . . . . . 19
      3.28  Discrimination:  Occupational Safety; Labor. . . . . . . . . . . . . . 19
      3.29  Related Transactions . . . . . . . . . . . . . . . . . . . . . . . . . 20
      3.30  Brokers and Finders. . . . . . . . . . . . . . . . . . . . . . . . . . 20
      3.31  Questionable Payments. . . . . . . . . . . . . . . . . . . . . . . . . 20
      3.32  Books and Records. . . . . . . . . . . . . . . . . . . . . . . . . . . 20
      3.33  Bank Accounts; Safe Deposit Boxes. . . . . . . . . . . . . . . . . . . 20
      3.34  Full Disclosure. . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
      3.35  Effect of Certificates . . . . . . . . . . . . . . . . . . . . . . . . 21
      3.36  Source Code. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
      3.37  Licenses and Royalties . . . . . . . . . . . . . . . . . . . . . . . . 21
      3.38  Adequacy of Documentation. . . . . . . . . . . . . . . . . . . . . . . 21
      3.39  Third-Party Components in Software Programs. . . . . . . . . . . . . . 21
      3.40  Third-Party Interests or Marketing Rights in Software Programs . . . . 21
      3.41  No Virus Warranties. . . . . . . . . . . . . . . . . . . . . . . . . . 22
      3.42  Software:  Physical Media. . . . . . . . . . . . . . . . . . . . . . . 22
      3.43  Year 2000 Compliance . . . . . . . . . . . . . . . . . . . . . . . . . 22
      3.44  Material Misstatements or Omissions. . . . . . . . . . . . . . . . . . 22

ARTICLE IV

      REPRESENTATIONS AND WARRANTIES OF QUIXOTE. . . . . . . . . . . . . . . . . . 23
      4.1   Organization and Qualification . . . . . . . . . . . . . . . . . . . . 23
      4.2   Authority. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
      4.3   Consents and Approvals . . . . . . . . . . . . . . . . . . . . . . . . 23
      4.4   Absence of Conflicts . . . . . . . . . . . . . . . . . . . . . . . . . 23
      4.5   Litigation and Administrative Proceedings. . . . . . . . . . . . . . . 23
      4.6   Brokers and Finders. . . . . . . . . . . . . . . . . . . . . . . . . . 23
      4.7   Conduct of Business. . . . . . . . . . . . . . . . . . . . . . . . . . 24
</TABLE>

                                            ii
<PAGE>

<TABLE>
<CAPTION>
<S>                                                                               <C>
ARTICLE V

      COVENANTS RELATING TO CONDUCT OF BUSINESS. . . . . . . . . . . . . . . . . . 24
      5.1   Conduct of Business. . . . . . . . . . . . . . . . . . . . . . . . . . 24

ARTICLE VI

      COVENANTS OF NU-METRICS AND THE SHAREHOLDERS . . . . . . . . . . . . . . . . 26
      6.1   Consents and Approvals . . . . . . . . . . . . . . . . . . . . . . . . 26
      6.2   Closing Returns. . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
      6.3   Access to Information. . . . . . . . . . . . . . . . . . . . . . . . . 27
      6.4   Non-Competition and Right of First Refusal . . . . . . . . . . . . . . 27
      6.5   338(h)(10) Election. . . . . . . . . . . . . . . . . . . . . . . . . . 29
      6.6   Consulting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
      6.7   Further Assurances . . . . . . . . . . . . . . . . . . . . . . . . . . 29

ARTICLE VII

      COVENANTS OF QUIXOTE . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
      7.1   Retention of Records . . . . . . . . . . . . . . . . . . . . . . . . . 29
      7.2   Termination Agreements . . . . . . . . . . . . . . . . . . . . . . . . 29
      7.3   Further Assurances . . . . . . . . . . . . . . . . . . . . . . . . . . 30

ARTICLE VIII

      MUTUAL COVENANTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
      8.1   Confidentiality. . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
      8.2   Consistent Tax Reporting . . . . . . . . . . . . . . . . . . . . . . . 31
      8.3   Cooperation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

ARTICLE IX

      CONDITIONS TO OBLIGATIONS OF NU-METRICS AND THE SHAREHOLDERS . . . . . . . . 31
      9.1   Representations and Warranties . . . . . . . . . . . . . . . . . . . . 31
      9.2   Performance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
      9.3   Filings; Consents: Waiting Periods . . . . . . . . . . . . . . . . . . 31
      9.4   No Injunction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

ARTICLE X

      CONDITIONS TO OBLIGATIONS OF QUIXOTE . . . . . . . . . . . . . . . . . . . . 32
      10.1  Representations and Warranties . . . . . . . . . . . . . . . . . . . . 32
      10.2  Performance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
</TABLE>

                                            iii
<PAGE>
<TABLE>
<CAPTION>
<S>                                                                               <C>
      10.3  Filings:  Consents; Waiting Periods. . . . . . . . . . . . . . . . . . 32
      10.4  No Litigation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
      10.5  Legal Opinion. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
      10.6  Due Diligence Investigation. . . . . . . . . . . . . . . . . . . . . . 32
      10.7  Shareholder Approval . . . . . . . . . . . . . . . . . . . . . . . . . 33
      10.8  Delivery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
      10.9  338(h)(10) Election. . . . . . . . . . . . . . . . . . . . . . . . . . 33
      10.10 Accountant's Consent . . . . . . . . . . . . . . . . . . . . . . . . . 33

ARTICLE XI

      CLOSING DELIVERIES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
      11.1  Stock. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
      11.2  Books and Records. . . . . . . . . . . . . . . . . . . . . . . . . . . 33
      11.3  Legal Opinion. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
      11.4  Consents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
      11.5  Closing Certificates and Releases. . . . . . . . . . . . . . . . . . . 33
      11.6  Charter: Good Standing Certificates. . . . . . . . . . . . . . . . . . 34
      11.7  Resignations of Nu-Metrics' Officers and Directors . . . . . . . . . . 34
      11.8  Performance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
      11.9  Purchase Price . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
      11.10 Bank Accounts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
      11.11 Further Assurances . . . . . . . . . . . . . . . . . . . . . . . . . . 34

ARTICLE XII

      SURVIVAL AND INDEMNIFICATION . . . . . . . . . . . . . . . . . . . . . . . . 34
      12.1  Survival of Representations and Warranties: Covenants. . . . . . . . . 34
      12.2  Indemnification. . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
      12.3  Indemnification by Quixote . . . . . . . . . . . . . . . . . . . . . . 36
      12.4  Indemnification Procedure. . . . . . . . . . . . . . . . . . . . . . . 36
      12.5  Offset Against Unpaid Amounts. . . . . . . . . . . . . . . . . . . . . 37
      12.6  Treatment as Adjustment of Purchase Price. . . . . . . . . . . . . . . 38
      12.7  Loans. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

ARTICLE XIII

      TERMINATION, AMENDMENT AND WAIVERS . . . . . . . . . . . . . . . . . . . . . 39
      13.1  Termination. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
      13.2  Effect of Termination. . . . . . . . . . . . . . . . . . . . . . . . . 39

ARTICLE XIV

      MISCELLANEOUS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
</TABLE>

                                            iv
<PAGE>
<TABLE>
<CAPTION>
<S>                                                                               <C>
      14.1  Amendment and Modification . . . . . . . . . . . . . . . . . . . . . . 39
      14.2  Waiver of Compliance . . . . . . . . . . . . . . . . . . . . . . . . . 39
      14.3  Expenses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
      14.4  Notices. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
      14.5  Assignment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
      14.6  Publicity. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
      14.7  Headings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
      14.8  Severability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
      14.9  Governing Law. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
      14.10 Counterparts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
      14.11 Third Parties. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
      14.12 Arbitration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
      14.13 Review of Accounting Matters . . . . . . . . . . . . . . . . . . . . . 42
      14.14 Entire Agreement . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
</TABLE>

                                       v


<PAGE>
                               STOCK PURCHASE AGREEMENT


      THIS STOCK PURCHASE AGREEMENT, dated as of November 30, 1998, (the 
"Agreement"), by and among QUIXOTE CORPORATION, a Delaware corporation, 
having an address at One East Wacker Drive, Chicago, Illinois 60601, or a 
subsidiary thereof ("Quixote") and NU-METRICS, INC., a Pennsylvania 
corporation, having an address at University Drive, Box 518, Uniontown, 
Pennsylvania 15401 ("Nu-Metrics") and HARRY R. SAMPEY, Ph.D, an individual, 
having an address at P. O. Box 73, Farmington, Pennsylvania 15437 ("Sampey"), 
BRENDA J. AUER, an individual, having an address at RD 1, Box 522, 
Vanderbilt, Pennsylvania 15486, CHRISTINE C. SAMPEY, an individual, having an 
address at 10600 Bloomfield Drive, #1234, Orlando, Florida 32825, KIM A. 
SAMPEY, an individual, having an address at RD 1, Box 465, Vanderbilt, 
Pennsylvania 15486, VICKI L. SAMPEY, an individual, having an address at RD 
1, Box 465, Vanderbilt, Pennsylvania 15486, and KAREN SINGO, an individual, 
having an address at 2383 Ben Franklin Drive, Delano, Florida 32720 (Sampey, 
together with the above-named individuals, are hereinafter collectively 
referred to as the "Shareholders").

                                 W I T N E S S E T H:

      WHEREAS, Nu-Metrics is engaged in the business of designing and 
developing electronic instruments for the highway transportation industry;

      WHEREAS, the respective Boards of Directors of each of Quixote and 
Nu-Metrics have determined that it is advisable and for the benefit of their 
corporations and their respective shareholders that Nu-Metrics be acquired by 
Quixote by means of the acquisition from the Shareholders by Quixote of all 
of the outstanding capital shares of Nu-Metrics, $1.00 par value per share 
(the "Shares"), in exchange for cash, pursuant to the terms and conditions 
set forth herein (the "Acquisition");

      WHEREAS, the Shareholders own of record and beneficially all of the 
issued and outstanding Shares;

      WHEREAS, the parties intend that, for federal income tax purposes, this 
transaction qualify for an election under Section 338(h)(10) of the Internal 
Revenue Code of 1986, as amended (the "Code");

      NOW, THEREFORE, in consideration of the premises, the mutual covenants 
and agreements contained herein, and other good and valuable consideration, 
the receipt and sufficiency of which are hereby acknowledged, and in reliance 
upon the representations and warranties contained herein, the parties hereto 
agree as follows:

<PAGE>

                                      ARTICLE I

                              TERMS OF PURCHASE AND SALE

      1.1   PURCHASE AND SALE OF THE SHARES.  Subject to the terms and 
conditions contained in this Agreement, on the Closing Date (as hereinafter 
defined), the Shareholders shall sell, assign, transfer and deliver the 
Shares to Quixote, and Quixote shall purchase the Shares from the 
Shareholders, for an aggregate purchase price consisting of the amounts set 
forth in Section 1.3 hereof (the "Purchase Price") payable pursuant to the 
terms provided in Section 1.3 hereof.

      1.2   CLOSING.  Subject to the terms and conditions of this Agreement, 
the closing of the transactions contemplated hereby (the "Closing") shall 
take place at the offices of Ross & Hardies, Chicago, Illinois, at 9:00 a.m., 
Central Standard Time, on November 30, 1998 (the "Closing Date") or such 
other place or time as the parties may agree.

      1.3   PAYMENT OF PURCHASE PRICE.  Upon satisfaction of all the terms 
and conditions set forth in this Agreement, on the Closing Date Quixote shall 
deliver to the Shareholders  the Purchase Price consisting of FOURTEEN 
MILLION NINE HUNDRED THOUSAND AND NO/100 DOLLARS ($14,900,000) (the "Cash 
Consideration") to be allocated pursuant to the terms of SCHEDULE 1.3, less 
the Holdback Amount as set forth on SCHEDULE 1.6.  The Cash Consideration 
will be adjusted by an amount (which may be positive or negative) equal to 
the change in the value of Net Assets (hereinafter defined) of Nu-Metrics 
from June 30, 1998 to the Closing Date, which adjustment shall be 
accomplished by the payment of money from the Shareholders to Quixote or from 
Quixote to the Shareholders, whichever the case may be, after the Closing, 
and in the event either party breaches this obligation, the other party shall 
be entitled to indemnification therefor pursuant to Article XII hereof, 
without regard to the Basket (hereinafter defined).  Delivery to the 
Shareholders of the Cash Consideration shall be accomplished on the Closing 
Date in immediately available funds by wire transfer to such bank account as 
Sampey shall specify and, notwithstanding the physical delivery of the 
Shares, the transfer to Quixote of the ownership of the Shares shall not be 
effective unless and until such wire transfer has been completed and 
acknowledged by the receiving bank.

      1.4   CALCULATION OF PURCHASE PRICE.  The parties hereto acknowledge 
and agree that the calculation of the Purchase Price, and the calculation of 
the Net Assets, does not include the following items which shall be 
distributed by Nu-Metrics to the Shareholders the day before the Closing 
Date: all of the cash, all marketable securities, the condominium apartment, 
the Mercedes convertible and the lease related thereto, the airport lease and 
the aircraft presently owned by Nu-Metrics, the airport hangar building and 
improvements thereto, including the fuel tanks and the paving, the outer 
laboratory and the improvements and the equipment relating thereto, and the 
policy issued by American Guardian Life Assurance, which insures the life of 
Sampey (collectively, the "Retained Assets").  The 

                                       2
<PAGE>

Shareholders shall assume all liabilities relating to the Retained Assets 
including, without limitation, the related aircraft debt (the "Aircraft 
Debt").

      1.5   TAX AND ACCOUNTING.  The parties hereto shall each use their best 
efforts to cause the transactions contemplated hereunder to qualify for an 
election pursuant to Section 338(h)(10) of the Code.

      1.6   HOLDBACK.  The transactions contemplated herein (including the 
distribution of the Retained Assets contemplated in Section 1.4 hereof and 
the Section 338(h)(10) election) might result in tax to Nu-Metrics under Code 
Section 1374.  Prior to the Closing, the Shareholders and Quixote shall make 
a reasonable estimation of the anticipated amount of any such tax; and, at 
the time of Closing, that amount (the "Holdback Amount") shall be withheld 
from the Cash Consideration which is to be delivered to the Shareholders 
pursuant to Section 1.3 hereof and paid to Nu-Metrics for later distribution 
consistent herewith.  Within thirty (30) days after the filing of the income 
tax return on which the amount of any such tax is shown to be due, the 
portion of the Holdback Amount in excess of the amount of any such tax due, 
if any, shall be paid by Nu-Metrics to Sampey for distribution to the 
Shareholders.  If the Holdback Amount is not sufficient to pay the amount of 
the tax as shown on the income tax return, the Shareholders shall reimburse 
Nu-Metrics for the additional amount of the tax which is so paid within 
thirty (30) days after the return has been filed.

                                      ARTICLE II

                              PURCHASE PRICE ADJUSTMENTS

      2.1   ADJUSTMENT AMOUNT.  As provided herein, the Cash Consideration 
will be adjusted by an amount (which may be positive or negative) equal to 
the change in the value of Net Assets of Nu-Metrics as shown on the June 30, 
1998 financial statements of Nu-Metrics, from June 30, 1998 to the Closing 
Date (the "Adjustment Amount").  The change in the value of Net Assets shall 
be calculated in conformity with GAAP.

            (a)   PRELIMINARY ADJUSTMENT.  On or before the Closing Date, the 
Shareholders shall cause Smith, Lewis, Chess & Company ("SLCC"), who are 
Nu-Metrics' outside auditors, to prepare a preliminary Closing balance sheet 
(the "Preliminary Closing Balance Sheet") based upon the September 30, 1998 
financial statements of Nu-Metrics, and deliver such Preliminary Closing 
Balance Sheet to Quixote for review and approval.  Based upon such 
Preliminary Closing Balance Sheet, as approved by Quixote, Quixote and Sampey 
shall make a preliminary determination of the Adjustment Amount (the 
"Preliminary Adjustment Amount"). If the Preliminary Closing Balance Sheet 
indicates that the value of Net Assets has decreased from June 30, 1998 to 
the Closing Date, the Cash Consideration to be delivered to the Shareholders 
hereunder shall be reduced by the amount of the Preliminary Adjustment 
Amount, and if the value of Net Assets has increased from June 30, 1998 to 
the 
                                       3

<PAGE>

Closing Date, the Cash Consideration to be delivered to the Shareholders 
hereunder shall be increased by the amount of the Preliminary Adjustment 
Amount. 

            (b)   FINAL ADJUSTMENT.  Within 30 days of the Closing, the 
Shareholders shall deliver to Quixote a final Closing balance sheet (the 
"Final Closing Balance Sheet") based upon the November 30, 1998 financial 
statements of Nu-Metrics, and its final determination of the Adjustment 
Amount (the "Final Adjustment Amount"), based upon the Final Closing Balance 
Sheet. Quixote shall have 15 days to review the Final Closing Balance Sheet 
and Final Adjustment Amount.  Failure of Quixote to notify the Shareholders 
within such 15 day period of Quixote's approval or disapproval thereof shall 
be deemed approval.    On the fifth business day after Quixote's approval 
thereof, if the value of Net Assets has decreased from June 30, 1998 to the 
Closing Date, the Shareholders will pay to Quixote, and if the value of Net 
Assets has increased from June 30, 1998 to the Closing Date, Quixote will pay 
to the Shareholders, the Final Adjustment Amount (treated as a positive 
number in all cases), with appropriate credit being given for the Preliminary 
Adjustment Amount paid pursuant to Section 2.1(a).  Payments must be made in 
immediately available funds.  Payments to the Shareholders will be made by 
wire transfer to such bank accounts as Sampey shall specify and in the same 
proportions as the Cash Consideration.  Payment to Quixote will be made by 
wire transfer to such bank account as Quixote specifies.

            (c)   DISPUTES.  If Quixote and Sampey are unable to agree upon 
the Final Adjustment Amount, such dispute shall be resolved by a "Big Five" 
accounting firm, in accordance with Section 14.13 hereof.

      2.2   NET ASSETS.  For the purposes of this Article II and this 
Agreement, "Net Assets" shall mean the assets minus the liabilities as 
reflected in the financial statements of Nu-Metrics; however, in all events, 
there shall be excluded from the determination of the Net Assets the Retained 
Assets and the Aircraft Debt as defined in Section 1.4 hereof, as well as all 
other liabilities related to the Retained Assets.

                                     ARTICLE III

                     REPRESENTATIONS AND WARRANTIES OF NU-METRICS
                                 AND THE SHAREHOLDERS

      Nu-Metrics and the Shareholders, jointly and severally, represent and 
warrant to Quixote as follows:

      3.1   ORGANIZATION AND QUALIFICATION. (a) Nu-Metrics is a corporation 
duly organized, validly existing and in good standing under the laws of the 
State of Pennsylvania, and has the corporate power and authority to enter 
into this Agreement, to consummate the transactions contemplated hereby, to 
own or lease the properties and other assets which it presently owns or 
leases and to carry on its business as presently conducted.

                                       4
<PAGE>

            (b)   The copy of the Articles of Incorporation, and all 
amendments thereto, of Nu-Metrics, as certified by the Secretary of State of 
the State of Pennsylvania, and of the By-laws, as amended to date, of 
Nu-Metrics, as certified by its Secretary, being delivered herewith to 
Quixote, are true, complete and correct copies as amended and presently in 
effect.  All minutes and consents of the shareholders and directors of 
Nu-Metrics are contained in the minute books of Nu-Metrics, and said minute 
books have been furnished to Quixote for examination at a reasonable time 
prior to the Closing.  No minutes or consents have been included in such 
minute books since such examination by Quixote which have not heretofore been 
furnished to Quixote and no corporate action not reflected in said minute 
books has been taken.

            (c)   Nu-Metrics is duly licensed or qualified to do business as 
a foreign corporation, and is in good standing, in every domestic and foreign 
jurisdiction in which Nu-Metrics is required to be so licensed or qualified.

      3.2   AUTHORITY.  Nu-Metrics and the Shareholders, on their own behalf, 
as appropriate, have full power, capacity and authority (corporate or 
otherwise) to execute and deliver this Agreement and to consummate the 
transactions contemplated hereby.  The execution and delivery of this 
Agreement and the consummation of the transactions contemplated hereby have 
been duly and validly authorized and approved by all necessary action on the 
part of each of the Shareholders  and the Board of Directors of Nu-Metrics 
and no other proceedings (corporate or otherwise) on the part of the 
Shareholders or Nu-Metrics are necessary to authorize this Agreement or to 
consummate the transactions contemplated hereby.  This Agreement and the 
other agreements contemplated by this Agreement have been duly and validly 
executed and delivered by each of the Shareholders and Nu-Metrics,  and 
constitute legal, valid and binding agreements of Nu-Metrics and the 
Shareholders.

      3.3   CAPITALIZATION.  The entire authorized capital stock of 
Nu-Metrics and the number of Shares thereof which are issued and outstanding 
are as follows:

<TABLE>
<CAPTION>

          NUMBER OF                                                NUMBER
      AUTHORIZED SHARES                                          ISSUED AND
        OF NU-METRICS                    CLASS                   OUTSTANDING
         <S>                            <C>                       <C>
          2,000,000                      Common                    366,233
</TABLE>

All of the issued and outstanding Shares of Nu-Metrics' capital stock are 
owned of record and beneficially by the Shareholders in the respective 
amounts set forth in SCHEDULE 3.3 hereto.  The Shares are subject to no 
restrictions on transferability other than restrictions imposed by the 1933 
Act, and applicable state securities laws.  All of the outstanding Shares of 
capital stock of Nu-Metrics are duly authorized and validly issued and 
outstanding, fully paid and non-assessable, and were not issued in violation 
of any preemptive rights. There are no Shares of capital stock in treasury, 
and there are no Shares reserved for issuance.  

                                       5
<PAGE>

Except as set forth in this Agreement, there are no outstanding options, 
warrants, conversion or other rights to acquire from any of the Shareholders 
or Nu-Metrics, or any plans, contracts or commitments providing for the 
issuance of, or the granting of, rights by the Shareholders or Nu-Metrics to 
acquire: (i) any capital stock of Nu-Metrics (whether issued or unissued) or 
(ii) any securities convertible into or exchangeable for any capital stock of 
Nu-Metrics.  There are no agreements or understandings with respect to the 
voting, holding or selling of any Shares of capital stock of Nu-Metrics, or 
any contractual obligations of Nu-Metrics or any of the Shareholders with 
respect to Nu-Metrics' capital stock.  There are no voting trusts or proxies 
currently in effect with respect to the Shares.  No person has any right to 
require Nu-Metrics to register any of its securities under the 1933 Act.

      3.4   TITLE TO SHARES.  The Shareholders own and have good and 
marketable title to the Shares, free and clear of any lien, pledge, claim, 
encumbrance, restriction or right of any third party of any kind.  On the 
Closing Date, Quixote will acquire good and marketable title to the Shares, 
free and clear as aforesaid, including without limitation, any of the 
foregoing set forth in the By-laws of Nu-Metrics.  The Shares represent the 
only equity interest of the Shareholders in Nu-Metrics.

      3.5   CONSENTS AND APPROVALS.  Except as set forth in SCHEDULE 3.5 
hereto, there is no authorization, consent, order or approval of, or notice 
to or filing with, any individual or entity required to be obtained or given 
in order for Nu-Metrics and the Shareholders to consummate the transactions 
contemplated hereby and fully perform their respective obligations hereunder.

      3.6   ABSENCE OF CONFLICTS.  The execution, delivery and performance by 
Nu-Metrics and the Shareholders of this Agreement and the consummation by 
Nu-Metrics and the Shareholders of the transactions contemplated hereby will 
not, with or without the giving of notice or lapse of time or both, (i) 
violate any provision of law, statute, rule or regulation to which either 
Nu-Metrics or the Shareholders are or were subject, (ii) violate any order, 
judgment or decree which is or was applicable to either Nu-Metrics or the 
Shareholders; (iii) conflict with or result in a breach or default under any 
term or condition of the Articles of Incorporation or By-laws of Nu-Metrics, 
or any agreement or other instrument to which either Nu-Metrics or the 
Shareholders are a party or by which either of them is bound, or (iv) cause, 
or give any person grounds to cause, the maturity of any debt, liability or 
obligation of Nu-Metrics to be accelerated or increase any such liability or 
obligation.

      3.7   FINANCIAL STATEMENTS:  ACCOUNTS RECEIVABLE.  Nu-Metrics has 
previously delivered to Quixote true and correct copies of the unaudited 
balance sheets of Nu-Metrics, as of June 30, 1998 and the related unaudited 
statements of income, statements of retained earnings and statements of 
changes in financial position for the periods ending on such dates 
(collectively, the "Financial Statements").  Except as disclosed on 
SCHEDULE 3.7, the Financial Statements (i) have been prepared in accordance 
with generally accepted accounting principles applied on a consistent basis, 
are correct and complete and are in accordance with the books and records of 
Nu-Metrics, (ii) present fairly the financial position and condition 

                                       6
<PAGE>

of Nu-Metrics and the related results of operations as at the dates and for 
the periods then ended (subject to customary year-end adjustments, which 
adjustments shall not be material in kind or amount) and (iii) contain no 
material misstatements or omissions which under generally accepted accounting 
principles would be required to be disclosed for financial statement 
purposes.  As used in this Section 3.7, "material" shall mean any such 
adjustments, misstatements or omissions, which individually exceeds 
$5,000.00, and in the aggregate, exceeds $100,000.00.

      Subject to applicable reserves for bad debts shown on Nu-Metrics' 
latest balance sheets included in the Financial Statements, as such reserves 
are adjusted from the date thereof in the ordinary course of business, all 
accounts and notes receivable reflected on the balance sheets are, and all 
accounts and notes receivable subsequently accruing to the Closing Date will 
be, (a) valid, genuine and subsisting, (b) subject to no known defenses, 
setoffs or counterclaims and (c) current and collectible.

      3.8   ABSENCE OF UNDISCLOSED LIABILITIES.  Except as and to the extent 
reserved for in the Financial Statements or as set forth in SCHEDULE 3.8 
hereto, Nu-Metrics has no liabilities or obligations, whether accrued, 
absolute or contingent, determined or undetermined, known or unknown or 
whether due or to become due (including, without limitation, obligations as 
guarantor) other than those in the ordinary course of business since June 30, 
1998, which have not yet been accrued or booked. Nu-Metrics does not know of 
any basis for the assertion of any claim or liability relating to the 
business of Nu-Metrics, nor is it aware of any occurrence or fact that has or 
might have an adverse effect on the businesses of Nu-Metrics.  Except as 
disclosed in SCHEDULE 3.8, as of the date of this Agreement, Nu-Metrics has 
no outstanding debt to any bank or other lender.

      3.9   ABSENCE OF CERTAIN CHANGES OR EVENTS.  Except as set forth on 
SCHEDULE 3.9 hereto, since June 30, 1998, there has not been (a) any damage, 
destruction or casualty loss to the properties or assets of Nu-Metrics 
(whether covered by insurance or not) outside the ordinary course of 
business; (b) any material adverse change in the business, assets, 
properties, operations, prospects or financial condition of Nu-Metrics or any 
fact or condition which could cause such a change, other than any change, 
fact or condition related solely to the transactions contemplated hereby; (c) 
any entry into any transaction, commitment or agreement (including, without 
limitation, any borrowing) in excess of $10,000.00, or outside the ordinary 
course of business of Nu-Metrics; (d) any direct or indirect redemption, 
repurchase or other acquisition for value by Nu-Metrics of its capital stock 
or any agreement to take such action, or any declaration, setting aside or 
payment of any dividend or other distribution in cash, stock or property with 
respect to Nu-Metrics' capital stock (other than the distribution of Retained 
Assets as set forth in Section 1.4 hereof); (e) any increase in the rate or 
terms of compensation payable or to become payable by Nu-Metrics to its 
directors, officers, employees, agents or independent contractors or any 
increase in the rate or change in the terms of any employment agreement or 
compensatory arrangement, or any changes in any bonus, severance, pension, 
insurance or other employee benefit plan, or any other payment or benefit 
made to or for any such director, officer, employee, agent or independent 

                                       7
<PAGE>

contractor; (f) any sale, transfer or other disposition of any asset of 
Nu-Metrics to any party, including, without limitation, the Shareholders, 
except for payment of obligations incurred, and sale of products, in the 
ordinary course of business consistent with past practices; (g) any amendment 
or termination of any material contract or agreement to which Nu-Metrics is a 
party or any termination or waiver of any other rights of value to the 
businesses of Nu-Metrics; (h) any capital expenditure for additions to 
property or equipment by Nu-Metrics in excess of $10,000.00; (i) any split, 
combination, exchange or reclassification of shares of capital stock of 
Nu-Metrics; (j) any issuance of capital stock of Nu-Metrics or of securities 
convertible into or rights to acquire any such capital stock; (k) any failure 
by Nu-Metrics to pay accounts payable or other obligations in the ordinary 
course of business; (l) the incurrence of any obligations or liability 
(absolute or contingent) or the making of any capital expenditure not in the 
ordinary course of business or in excess of $10,000.00; (m) any pledge of any 
of the assets or properties of Nu-Metrics or any action or inaction which 
would subject any such assets or properties to any lien, security interest, 
mortgage, pledge, claim, charge or other encumbrance of any kind; (n) the 
incurrence of any liability or obligation by Nu-Metrics, except for 
liabilities incurred in the ordinary course of business; (o) any actual or 
threatened termination or cancellation of, or modification or change in, any 
business relationship with any customer or customers of Nu-Metrics or other 
agreement or arrangement involving or related to the assets or properties of 
the businesses of Nu-Metrics; (p) any cancellation of a debt due to or a 
claim of Nu-Metrics, other than by payment or other satisfaction; (q) any 
failure of Nu-Metrics to perform under, or any default by Nu-Metrics under, 
any agreement, obligation or covenant to which it is or was bound; (r) any 
change in any method of accounting or accounting practice, principle or 
procedure; (s) any action or inaction which might cause Nu-Metrics to incur 
any tax liability out of the ordinary course of business (other than the 
distribution of Retained Assets as set forth in Section 1.4 hereof); (t) any 
other event or condition of any character which materially and adversely 
affects the businesses of Nu-Metrics; or (u) any agreement, whether in 
writing or otherwise, to take any action described in this Section 3.9.  The 
provisions of this Section 3.9 shall not have any application to (and this 
Section 3.9 shall not prohibit or restrict) any distributions to one or more 
Shareholders of any of the Retained Assets.

      3.10  INTENTIONALLY OMITTED.

      3.11  REAL AND PERSONAL PROPERTY; INVENTORIES.  SCHEDULE 3.11(a) hereto 
correctly identifies (i) each lease or rental of real property held or paid 
by Nu-Metrics; and (ii) each parcel of real property, and each interest 
(other than such leases or rentals) in real property, used in the operations 
of the businesses of Nu-Metrics.  Except as set forth in SCHEDULE 3.11(a) 
hereto, (a) any structures described in SCHEDULE 3.11(a) and Nu-Metrics' use 
thereof conform in all material respects with all applicable ordinances, 
requirements, regulations, zoning laws, restrictive covenants, conditions and 
restrictions and do not encroach on property of others, and are not 
encroached upon by structures of others; and (b) no claims, charges or notice 
of violations have been filed, served, made or threatened, orally or in 
writing, against or relating to any such property or any of the operations 
conducted at any such property (currently or in the past) as a result of (i) 
any violation or alleged violation of 

                                       8
<PAGE>

any applicable ordinances, requirements, regulations, zoning laws, 
restrictive covenants, conditions or restrictions, or (ii) as a result of any 
encroachment on the property of others.  SCHEDULE 3.11(b) hereto describes 
all material tangible or intangible personal property and assets of 
Nu-Metrics.  Nu-Metrics has good and marketable title to, and is in 
possession of or has control over, all of its real and personal property, 
none of which is held under or subject to any mortgage, pledge, lien, lease, 
encumbrance, conditional sales contract or other security arrangement except 
to the extent described in SCHEDULE 3.11(b) hereto.  Each item of such 
tangible personal property and assets is in good working order or condition, 
reasonable wear and tear excepted.

      The inventories of Nu-Metrics are in good and merchantable condition 
and are of a quality suitable and usable or saleable in the ordinary course 
of business for the purposes for which such inventories are intended.  The 
products comprising such inventory are free from defects and operate in 
accordance with specifications for such products.  The inventory is adequate 
for Nu-Metrics' business  and there has been no material adverse change in 
such inventories since June 30, 1998.  For purposes of this Section 3.11, 
"merchantable" shall exclude parts which are not listed in bills of materials 
for current products in Nu-Metrics' catalogs and parts which are not in usage 
by Nu-Metrics for one (1) year or more.

      3.12  PATENTS, TRADEMARKS. ETC.  SCHEDULE 3.12 hereto contains an 
accurate and complete description of all domestic and foreign patents, 
trademarks, service marks, trademark registrations, service mark 
registrations, logos, trade names, assumed names, copyrights and copyright 
registrations and all applications therefor (collectively, the "Intellectual 
Property"), presently owned or held by Nu-Metrics, Sampey or Sampey 
Scientific, Ltd. (or any predecessor in interest of any of them) (each, a 
"Nu-Metrics Entity") or under which a Nu-Metrics Entity owns or holds any 
license, or in which Nu-Metrics owns or holds any direct or indirect 
interest.  Nu-Metrics, for itself and each Nu-Metrics Entity, represents and 
warrants that it has the full right, power and authority to transfer the 
rights, titles and interests granted herein, and that it is the legal and 
beneficial owner of all right, title and interest in and to the Intellectual 
Property, having good title thereto, free and clear of any and all mortgages, 
liens, security interests and charges and that no other person or entity has 
or shall have any claims of ownership in the Intellectual Property. 
Nu-Metrics has not previously assigned, transferred, conveyed or otherwise 
encumbered any right, title or interest in the Intellectual Property, and has 
not granted to any third party any license to use the Intellectual Property 
in any manner, or any covenant not to sue for any such use of the 
Intellectual Property.  To the extent any Intellectual Property, and the 
right, title and interest therein has not yet been assigned by any Nu-Metrics 
Entity to Nu-Metrics, Sampey shall cause the assignment thereof to 
Nu-Metrics, at the sole cost and expense of Quixote and/or Nu-Metrics, 
promptly after closing.  The Intellectual Property is valid, in good standing 
and not the subject of any challenge.  Nu-Metrics represents and warrants 
that no intellectual property other than the Intellectual Property is 
necessary for the conduct of the present businesses of Nu-Metrics.  None of 
the products manufactured, distributed or sold by Nu-Metrics, nor any of the 
Intellectual Property or other intellectual property (including without 
limitation, technology, inventions, processes, designs, formulae, know-how, 
trade secrets) 

                                       9
<PAGE>

(collectively, with the Intellectual Property, the "Intellectual Assets"), or 
any of Nu-Metrics' activities that may include the disclosing, copying, 
making, using or selling of such Intellectual Assets, or products or services 
embodying such Intellectual Assets, conflict with, infringe or otherwise 
violate any patents, trademarks or copyrights, or any other rights, of any 
individual or entity, nor require payments to be made to any individual or 
entity and no third party security interests therein are outstanding.  
Nu-Metrics or a Nu-Metrics Entity has the sole and exclusive right to use, 
has the right and power to sell, and has taken reasonable measures to 
maintain and protect the Intellectual Assets; no claims have been asserted by 
any individual or entity with respect thereto or challenging or questioning 
the validity or effectiveness of any license or agreement with respect 
thereto, and there is no valid basis for any such claim.  Nu-Metrics is not 
using confidential information or trade secrets of any former employer of any 
past or present employees engaged in the business of Nu-Metrics.  Nu-Metrics 
owns rights in all pre-existing copyright works upon which derivatives works 
are based.  The items described in SCHEDULE 3.12 and the other Intellectual 
Assets are adequate to conduct the business of Nu-Metrics  as presently 
conducted.  Upon consummation of the transactions contemplated hereby, 
Quixote will acquire good and marketable title to all of the Intellectual 
Assets and the goodwill associated therewith.

      3.13  EMPLOYEES.  All personnel, including employees, agents, 
consultants and contractors, who have contributed to or participated in the 
conception and development of the Intellectual Assets on behalf of Nu-Metrics 
either (a) were at such time parties to "work-for-hire" arrangements or 
agreements with Nu-Metrics, in accordance with applicable federal and state 
law, that have accorded Nu-Metrics full, effective, exclusive and original 
ownership of all intellectual property thereby arising, or (b) have executed 
appropriate instruments of assignment, which are still in full force and 
effect, in favor of Nu-Metrics, as assignee, that have conveyed to Nu-Metrics 
full, effective and exclusive ownership of all intellectual property thereby 
arising.  Nu-Metrics neither owns nor has any right, license or interest, 
whether as a licensee, licenser or otherwise, in any copyrights, patents, 
applications for copyrights or patents, trade secrets, inventions, processes 
and designs or in any trademarks, service marks, trade names, or applications 
for them, except as listed or described in SCHEDULE 3.12.  No employee of 
Nu-Metrics is in violation of (i) any term of any employment contract, any 
"work for hire" arrangement or agreement, or any patent or invention 
disclosure agreement or (ii) any other contract or agreement, or any 
restrictive covenant relating to the rights of any such employee to be 
employed by Nu-Metrics or to use trade secrets or proprietary information of 
others.

      3.14  CONTRACTS AND COMMITMENTS.

            (a)   Other than standard form customer and distributor contracts 
entered into in the ordinary course of business, and except as set forth in 
SCHEDULES 3.11(a), 3.14(a), 3.15, 3.24 and 3.28 hereto, Nu-Metrics is not a 
party to any agreements, contracts, guarantees, commitments, restrictions or 
instruments of any kind ("Contracts"). True and correct copies of all 
Contracts listed on SCHEDULES 3.11(a), 3.14(a), 3.15, 3.24 and 3.28 hereto 
have been made available to Quixote at a reasonable time prior to Closing.  
All of the 

                                       10
<PAGE>

Contracts are valid and binding obligations of Nu-Metrics, enforceable in 
accordance with their respective terms to the extent permitted by applicable 
law, and are in full force and effect and complied with.  No other party to 
any of the Contracts is in default or breach thereof.  True and correct 
copies of each standard form customer and distributor contract currently in 
use by Nu-Metrics in the conduct of its business are attached to 
SCHEDULE 3.14(a).  All non-standard form customer and distributor contracts 
are listed on SCHEDULE 3.14(a).  Nu-Metrics has not agreed with any customer 
or distributor to make any variation in any such contract which could have a 
material adverse effect on Nu-Metrics' assets, properties, businesses, 
financial condition or prospects.  As used herein, "material adverse effect" 
shall mean any adverse effect in excess of $100,000.00.

            (b)   Nu-Metrics has not given any power of attorney (whether 
revocable or irrevocable) to any individual or entity.

            (c)   Nu-Metrics is not in default, and there is no basis for any 
valid claim of default, in any respect under any of the Contracts.

      3.15  LICENSES AND ROYALTIES.  Except as set forth on SCHEDULE 3.15 
hereto, Nu-Metrics is not a licensee under any license, including, without 
limitation, licenses with respect to technology used or to be used in 
Nu-Metrics' products, and has no obligation to pay royalties to any third 
party in connection therewith.  Nu-Metrics has not granted to any individual 
or entity any rights or security interests with respect to the technology for 
Nu-Metrics' products.

      3.16  GOVERNMENT CONTRACTS.  Nu-Metrics does not have knowledge of any 
acts, omissions or noncompliance with regard to any applicable public 
contracting statute, regulation or contract requirement (whether express or 
incorporated by reference) to any contracts relating to Nu-Metrics, its 
businesses or any of its assets with any Government Contract Party (as 
defined below) in either case that have led to or could lead to (a) any claim 
or dispute involving Nu-Metrics, its businesses, or any of its assets and any 
Government Contract Party or (b) any suspension, debarment or contract 
termination, or proceeding related thereto.  Nu-Metrics has no knowledge of 
any act or omission related to the marketing, licensing, or selling of any 
technology related to Nu-Metrics, or its business that has led to or could 
have any material adverse affects on Nu-Metrics' rights or on any of its 
assets.  All of Nu-Metrics' development of technology was developed 
exclusively at private expense.  For purposes of this SECTION 3.16, the term 
"Government Contract Party" means any independent or executive agency, 
division, subdivision, audit group or procuring office of the federal 
government, including any prime contractor of the federal government and any 
higher level subcontractor of a prime contractor of the federal government, 
and including any employees or agents thereof, in each case acting in such 
capacity.

      3.17  PRODUCT WARRANTIES AND LIABILITIES.  Nu-Metrics has not given or 
made any express or implied warranties with respect to any products licensed, 
distributed, offered or sold or services performed by them, except for the 
limited warranties stated in standard form 

                                       11
<PAGE>

customer contracts, in the forms attached to SCHEDULE 3.14, with 
modifications that, in the aggregate, would not have a material adverse 
effect on business, prospects or financial condition of Nu-Metrics.  
Nu-Metrics does not have any knowledge of any fact or of the occurrence of 
any event forming the basis of any present or future claim against 
Nu-Metrics, whether or not fully covered by insurance, for liability on 
account of products liability or on account of any express or implied product 
warranty, except for warranty obligations and product returns in the ordinary 
course of business and as set forth in SCHEDULE 3.17.

      3.18  INSURANCE.  Nu-Metrics keeps all of its businesses, operations 
and properties insured against loss or damage, with responsible insurers.  
SCHEDULE 3.18 hereto is a description of all insurance policies held by 
Nu-Metrics concerning its businesses, operations and properties, true, 
complete and correct copies of which have been previously provided to 
Quixote.  All these policies are in the respective face amounts set forth in 
SCHEDULE 3.18, and such insurance is adequate and appropriate in accordance 
with sound business practices.  Each of the insurance policies referred to in 
SCHEDULE 3.18 is in force and the premiums with respect thereto are fully 
paid  through the dates indicated thereon.  No insurer has denied coverage or 
reserved rights for any claim made by Nu-Metrics, Subsidiary or any other 
individual or entity under any insurance policies.

      3.19  LITIGATION AND ADMINISTRATIVE PROCEEDINGS.  Except as set forth 
in SCHEDULE 3.19 hereto, there is no claim, action, suit, proceeding or 
investigation in any court or before any governmental or regulatory authority 
pending or threatened against or affecting Nu-Metrics or which seeks to 
enjoin or obtain damages in respect of the transactions contemplated hereby.  
Nu-Metrics does not know nor have any reason to know of any basis for any 
such claim, action, suit, proceeding or investigation.  No claim, action, 
suit, proceeding or investigation set forth in SCHEDULE 3.19 could, if 
adversely decided, have a material adverse effect on the business, 
properties, condition (financial or otherwise) or prospects of Nu-Metrics.

      3.20  TAX MATTERS.  For purposes of this Agreement:

            (a)   The term "Taxes" means all federal, state, local, foreign, 
and other net income, gross income, gross receipts, sales, use, ad valorem, 
transfer, franchise, profits, license, lease, service, service use, 
withholding, payroll, employment, excise, severance, stamp, occupation, 
premium, property, windfall profits, customs, duties or other taxes, fees, 
assessments, or charges of any kind whatever, together with any interest and 
any penalties, additions to tax, or additional amounts with respect thereto, 
and the term "Tax" means any one of the foregoing Taxes;

            (b)   The term "Returns" means all returns, declarations, 
reports, statements, and other documents required to be filed in respect of 
Taxes, and the term "Return" means any one of the foregoing Returns;

                                       12
<PAGE>

            (c)   The term "Code" means the Internal Revenue Code of 1986, as 
amended.  All citations to the Code or to the regulations promulgated 
thereunder shall include any amendments or any substitute or successor 
provisions thereto.

            3.20.1      CORPORATION MATTERS.  Nu-Metrics has qualified as an 
"S" corporation as such term is defined in Section 1361(a)(1) of the Code for 
each taxable year since October 1, 1991 and will continue to so qualify until 
the Closing Date.  Neither Nu-Metrics, the Shareholders nor any former 
shareholder of Nu-Metrics has engaged in any action which would result in 
Nu-Metrics failing to qualify as an "S" corporation under any provision of 
the Code.

            3.20.2      ALL RETURNS FILED.  All Returns required to be filed 
by or on behalf of Nu-Metrics on or before the Closing Date have been filed, 
or proper extensions for the filing of such Returns have been filed, and such 
Returns are complete and accurate and disclose all Taxes (and other charges) 
for the periods covered thereby.  Except as set forth in SCHEDULE 3.20.2, no 
extension of time in which to file any such Returns is currently in effect 
and there are not outstanding agreements or waivers extending the statutory 
period of limitation applicable to such Returns.

            3.20.3      ALL TAXES PAID.  All Taxes (and other charges) shown 
on such Returns or otherwise required to be paid, and any deficiency 
assessments, penalties, interest and other charges with respect thereto, have 
been paid, and there is otherwise no current liability for any unpaid taxes 
(or other charges) due in connection with such Returns or otherwise.  There 
are no tax liens (other than for taxes not yet due) on any of the assets or 
properties of Nu-Metrics, and, to the best knowledge of the Shareholder and 
Nu-Metrics, no basis exists for the imposition of any such liens.

            3.20.4      EXAMINATIONS, ETC.  Except for the 1995 and 1996 
federal Returns of Nu-Metrics which have been audited by the IRS (which 
audits resulted in no material change), no federal, state, local, foreign or 
other Returns of Nu-Metrics for tax years that remain open under any 
applicable statute of limitations have been examined by the IRS or other 
pertinent tax authorities and no deficiencies have been asserted or 
assessments made as a result of examinations (including all penalties and 
interest).  Nu-Metrics has not been notified that any issues have been raised 
by (or are currently pending before) the IRS or any other taxing authority in 
connection with any of the Returns which could reasonably be expected to have 
a material adverse effect on the financial condition of Nu-Metrics, taken as 
a whole, if decided adversely to Nu-Metrics, nor are there any such issues 
which have not been so raised but, if so raised by the IRS or any other 
taxing authority in connection with any of the Returns could, in the 
aggregate, reasonably be expected to have a material adverse effect on the 
financial condition of Nu-Metrics. 

            3.20.5      WITHHOLDING.  Nu-Metrics has withheld from its 
employees and others (and timely remitted to the appropriate taxing 
authorities) proper and accurate amounts for all periods in compliance with 
all tax withholding provisions of applicable federal, state, 

                                       13
<PAGE>

foreign, local and other laws (including, without limitation, income, 
withholding, social security, employment and other payroll taxes).

            3.20.6      FOREIGN PERSON, ETC.  No Shareholder is a "foreign 
person" as defined in Section 1445(f)(3) of the Code.  Nu-Metrics does not 
have a permanent establishment in any foreign country, as defined in the 
applicable tax treaty, if any, between the United States and such foreign 
country.  Nu-Metrics is not, and never has been, a United States real 
property holding corporation within the meaning Section 897(c)(1)(A)(ii) of 
the Code and Quixote is not required to withhold tax on the purchase of the 
Shares by reason of Section 1445 or any other provisions of the Code.  
Nu-Metrics has not participated in an international boycott within the 
meaning of Section 999 of the Code.  Nu-Metrics has no foreign assets.

            3.20.7      PARACHUTE PAYMENTS.  Nu-Metrics has not made, has not 
become obligated to make nor will, as a result of any event connected with 
the acquisition of Nu-Metrics by Quixote or any other transaction 
contemplated herein, make or become obligated to make any "excess parachute 
payment" as defined in Section 280G of the Code.

            3.20.8      ACCOUNTING; TAX ATTRIBUTES.  None of the assets or 
properties of Nu-Metrics (a) is tax-exempt use property within the meaning of 
Section 168(h) of the Code, (b) directly or indirectly secures any debt the 
interest on which is tax-exempt under Section 103(a) of the Code, or (c) is 
required to be treated as property owned by another under the provisions of 
former Section 168(f)(8) of the Code.  Nu-Metrics has not agreed to make, nor 
is it required to make, any adjustment under Section 481(a) of the Code.  To 
the best knowledge of the Shareholders and Nu-Metrics, the basis of 
Nu-Metrics in its assets is as set forth in its financial and tax records.  
Nu-Metrics is not a party to or bound by any tax indemnity, tax sharing or 
tax allocation agreement.

            3.20.9      PRIOR CONSOLIDATED GROUPS.  Except as set forth on 
SCHEDULE 3.20.9, Nu-Metrics is not, and has never been, an includible 
corporation in an affiliated group of corporations within the meaning of 
Section 1504 of the Code.

      3.21  COMPLIANCE WITH LAWS.  Except as disclosed in SCHEDULE 3.21, 
Nu-Metrics has not in the past been nor is it presently in violation of, in 
respect of its operations, real property, machinery, equipment, all other 
property, practices and all other aspects of its businesses, any applicable 
law (whether statutory or otherwise), rule, regulation, order, ordinance, 
judgment or decree of any governmental authority (federal, state, local or 
otherwise) (collectively, "Laws").  Except as disclosed in SCHEDULE 3.21, 
neither the Shareholders nor Nu-Metrics has received any notification of any 
asserted present or past failure of Nu-Metrics to comply with any of such 
Laws.

      3.22  ENVIRONMENTAL MATTERS. (a) Except as otherwise disclosed in 
SCHEDULE 3.22 hereto, (i) Nu-Metrics and its predecessors and the 
subsidiaries of either, if any, have obtained all Environmental Permits (as 
defined herein) that are required with respect to the 

                                       14
<PAGE>

business, operations and properties of Nu-Metrics and its predecessors and 
the subsidiaries of either; (ii) Nu-Metrics and its predecessors and their 
respective subsidiaries have been, and Nu-Metrics is, in compliance with all 
terms and conditions of all Environmental Laws (as defined herein) and 
Environmental Permits; (iii) neither Nu-Metrics nor its predecessors or their 
respective subsidiaries have received any notice from a governmental 
authority or third party of any violation of or potential liability arising 
under any Environmental Law or Environmental Permit in connection with the 
business of Nu-Metrics or its predecessors or their respective subsidiaries 
or the operation thereof, nor is any such notice pending or to the best of 
Nu-Metrics' knowledge, threatened; (iv) no underground or above ground 
storage tanks are or have been located on the real properties described in 
SCHEDULE 3.11(a) attached hereto or previously owned or operated by 
Nu-Metrics; and (v) Nu-Metrics is not aware of any generation, treatment, 
storage, transfer, disposal, release or threatened release in, at, from or on 
such real properties of toxic or hazardous substances by any current or 
previous owner or tenant of such real properties.  Nu-Metrics has delivered 
to Quixote all environmental records and material safety data sheets relating 
to its business and operations. Nu-Metrics shall permit Quixote and its 
agents access at all reasonable times to Nu-Metrics' property for the purpose 
of conducting a Phase I environmental audit thereof.

            (b)   Except as set forth in SCHEDULE 3.22, there is no condition 
or any set of facts or circumstances that could give rise to an Environmental 
Claim (as defined herein).

            (c)   Except as set forth in SCHEDULE 3.22, to the best of the 
Shareholders' and Nu-Metric's knowledge, there have been no releases of 
Hazardous Material into the soil, surface water or ground water at its 
production facility.  

            (d)   For purposes of this Agreement, the following terms shall 
have the respective meanings set forth herein:

            "Environmental Permit" shall mean any permit, license, approval 
or other authorization with respect to the business of Nu-Metrics or its 
predecessors or their respective subsidiaries or the operation thereof under 
any applicable Environmental Law (as defined herein), including laws, 
regulations or other requirements relating to emissions, discharges or 
releases of Hazardous Material (as defined herein) into ambient air, surface 
water, ground water, or land, or otherwise arising from the manufacture, 
processing, distribution, use, treatment, storage, disposal, transport, or 
handling of Hazardous Material by Nu-Metrics or its predecessors or their 
respective subsidiaries or the employees, representatives, contractors or 
actual agents of any of such entities.

            "Environmental Claim" shall mean any action, lawsuit, claim or 
proceeding relating to the business of Nu-Metrics or its predecessors or 
their respective subsidiaries or the operation thereof which seeks to impose 
liability, for (i) violation of any Environmental Law, (ii) release of any 
Hazardous Material, (iii) noise, (iv) pollution or contamination of the air, 
surface water, groundwater or land; (v) solid, gaseous or liquid waste 
generation, handling, treatment, storage, disposal or transportation; 
(vi) exposure to hazardous or toxic 

                                       15
<PAGE>

substances; or (vii) the manufacture, processing, distribution in commerce, 
use (by Nu-Metrics or its predecessors or their respective subsidiaries or 
the employees, representatives, contractors or actual agents of any of such 
entities), or storage (by Nu-Metrics or its predecessors or their respective 
subsidiaries or the employees, representatives, contractors or actual agents 
of any of such entities) of chemical substances.  An "Environmental Claim" 
includes, but is not limited to, a proceeding to issue, modify or terminate a 
permit or license, or to adopt or amend a law or regulation to the extent 
that such a proceeding attempts to redress violations of the applicable 
permit, license, law or regulation which occurred on or prior to the Closing 
Date as alleged by any federal, state or local executive, legislative, 
judicial regulatory or administrative agency, board or authority.

            "Hazardous Material" shall mean the following:  (i) All 
"hazardous substances," as such term is defined in the Comprehensive 
Environmental Response, Compensation and Liability Act of 1980, 42  U.S.C.A. 
Sec. 9601(14); (ii) all "hazardous wastes," as such term is defined in the 
Resource Conservation and Recovery Act, 42 U.S.C.A. Sec. 6903(5); (iii) all 
materials that are classified as hazardous or toxic under any Environmental 
Law, as defined below; (iv) petroleum products, including gasoline, diesel 
fuel, fuel oil, crude oil, and motor oil, and the constituents of those 
products; or (v) medical wastes.

            "Environmental Laws" shall mean, without limitation, the 
following: the Comprehensive Environmental Response, Compensation and 
Liability Act (42 U.S.C.A. Sec. 9601 ET SEQ.); the Resource Conservation and 
Recovery Act (42 U.S.C.A. Sec. 6901 ET SEQ.); the Clean Water Act (33 
U.S.C.A. Sec. 1251 ET SEQ.); the Clean Air Act (42 U.S.C.A. Sec. 7401 ET 
SEQ.); the Toxic Substance Control Act (15 U.S.C.A. Sec. 2601 ET SEQ.); the 
Occupational Safety and Health Act (29 U.S.C. 651 ET SEQ.); and all other 
federal, state and local statutes and ordinances pertaining to protection of 
the environment, health or safety, and all amendments made to, and 
regulations promulgated under, the foregoing laws effective at the time of 
Closing.

      3.23  EMPLOYEE BENEFITS.

            3.23.1      Attached hereto as SCHEDULE 3.23 is a written list of 
all employee benefit plans relating to employee benefits with respect to 
which Nu-Metrics has incurred or may incur any future or contingent 
obligations, including, without limitation, all plans, agreements or 
arrangements relating to deferred compensation, pensions, profit sharing, 
retirement income or other benefits, stock purchase, stock ownership and 
stock option plans, stock appreciation rights, bonuses, severance 
arrangements, health and welfare benefits, insurance benefits and all other 
employee benefits or fringe benefits whether or not committed to writing and 
whether or not any such plan is an "employee benefit plan" as defined in 
Section 3.3 of the Employee Retirement Income Security Act of 1974, as 
amended ("ERISA") (collectively referred to as the "Plans").  Except as may 
be indicated on SCHEDULE 3.23, Nu-Metrics does not contribute, nor has it 
ever contributed, to any multi-employer plan within the meaning of Section 
4001(a)(3) ERISA, nor is Nu-Metrics affiliated with any entity 


                                       16

<PAGE>

such that Nu-Metrics has, or might have in the future, any multi-employer     
plan withdrawal liability under Subtitle E of Part IV of ERISA.

            3.23.2      Nu-Metrics has, with respect to each Plan, delivered 
to Quixote true and complete copies of:  (i) all plan texts and agreements 
and related trust agreements or annuity contracts; (ii) all summary plan 
descriptions and material employee communications; (iii) the annual reports 
(Form 5500 series) (including all schedules thereto) for the most recent 
three (3) plan years; (iv) the actuarial valuations for the most recent three 
(3) plan years; (v) the audited financial statement and opinions for the most 
recent three (3) plan years; (vi) if the Plan is intended to qualify under 
Code Sections 401(a), the most recent determination letter received from the 
IRS; and (vii) any and all communications with any governmental entity or 
agency including, without limitation, the IRS, Department of Labor and the 
Pension Benefit Guaranty Corporation ("PBGC").

            3.23.3      Each Plan (and each trust forming a part of such 
Plan) has been administered and operated in all respects in accordance with 
its terms and applicable law.  Where designated on SCHEDULE 3.23, each Plan 
is "qualified" within the meaning of Section 401(a) of the Code and each 
related trust is exempt from tax under Section 501(a) of the Code.

            3.23.4      With respect to each Plan, no person:  (i) has 
entered into any non-exempt "prohibited transaction," as such term is defined 
in ERISA and the Code; (ii) has breached a fiduciary obligation or violated 
Sections 402, 403, 405, 503, 510 or 511 of ERISA; (iii) has any liability for 
any failure to act or comply with the administration or investment of the 
assets of such Plan; (iv) has engaged in any transactions or otherwise acted 
with respect to such Plan in a manner which could subject Nu-Metrics or any 
fiduciary or plan administrator or other person dealing with such Plan, to 
liability under Sections 409 or 502 of ERISA or Sections 4972 or 4976 through 
4980 of the Code.

            3.23.5      With respect to any Plan subject to Title IV of 
ERISA: (i) No liability to PBGC has been, or to the best knowledge of 
Nu-Metrics is expected to be, incurred with respect to any such Plan, except 
for liabilities for PBGC premiums which may be expected to be incurred in the 
ordinary course of business; (ii) no such Plan has been terminated; (iii) no 
filing of a notice to terminate any such Plan has been made; (iv) PBGC has 
not instituted proceedings to terminate any such Plan; (v) no "reportable 
event," as defined in Section 4043(b) for ERISA, for which the obligation to 
report to the PBGC within 30 days has not been waived by the PBGC, has 
occurred with respect to any such Plan; (vi) there exists no condition or set 
of circumstances which presents a risk of termination or partial termination 
of any Plan and which could result in a liability on the part of Nu-Metrics 
to PBGC; and (vii) the present value of accrued benefits under each such Plan 
does not presently exceed the current value of the assets of such Plan 
allocable to such accrued benefits, and for this purpose the terms "current 
value" and "accrued benefit" have the meanings specified in Sections 3(26) 
and 3(23), respectively, of ERISA and "present value" shall be determined 
using the actuarial assumptions which would be used by the enrolled

                                       17

<PAGE>


actuary for each such Plan in connection with determining whether such Plan 
satisfies the requirements of Section 412 of the Code, determined without 
regard to Subsection (b)(5)(B) thereof.

            3.23.6      Full payment has been made of all amounts which 
Nu-Metrics was required under the terms of any of the Plans to have paid as 
contributions to such Plans on or prior to the Closing Date, and no 
"accumulated funding deficiency" (as defined in Section 302(a)(2) of ERISA 
and Section 412(a) of the Code), whether or not waived, exists with respect 
to any such Plan.  No assets of Nu-Metrics are subject to any lien under 
ERISA Section 302(f) or Code Section 412(n).  Except as set forth on SCHEDULE 
3.23, with respect to each Plan, there are no funded benefit obligations for 
which contributions have not been made or properly accrued and there are no 
unfunded benefit obligations that have not been accounted for by reserves, or 
otherwise properly footnoted in accordance with generally accepted accounting 
principles, on the financial statements of Nu-Metrics.

            3.23.7      Other than for claims in the ordinary course of 
business for benefits under the Plans, there are no actions, suits, claims or 
proceedings, pending or threatened, nor to the best knowledge of Nu-Metrics 
does there exist any basis therefor, which may result in any liability with 
respect to any Plan to Nu-Metrics or any Plan or trust thereof.

            3.23.8      Except for continuation coverage under Sections 601 
ET SEQ. of ERISA, no former employee of Nu-Metrics or any affiliate thereof, 
nor any dependent of any such former employee, is entitled to any medical, 
dental benefits or other welfare benefits under any Plan.

            3.23.9      No Plan is described in Code Section 413(c) or ERISA 
Sections 4063, 4064 or 4066.  No Plan which is a "welfare plan" as defined in 
Section 3(1) of ERISA is a "multiple employer welfare arrangement" as defined 
in ERISA Section 3(40).

            3.23.10     Each Plan which is a "pension plan" as defined in 
ERISA Section 3(2) and which is not qualified under Code Section 401(a) is 
exempt from Parts 2, 3 and 4 of Title I of ERISA as an unfunded plan that is 
maintained primarily for the purpose of providing deferred compensation for a 
select group of management or highly compensated employees, pursuant to ERISA 
Sections 201(2), 301(a)(3) and 401(a)(1).  No assets of Nu-Metrics are 
allocated to or held in a "rabbi trust" or similar funding vehicle.

            3.23.11     Except as disclosed on SCHEDULE 3.23, the 
consummation of the transactions contemplated by this Agreement will not:  
(i) entitle any current or former employee of Nu-Metrics to severance pay, 
unemployment compensation or any similar payment; (ii) accelerate the time of 
payment or vesting, or increase the amount of any compensation due to, or in 
respect of, any current or former employee, (ii) constitute or involve a 
prohibited transaction; or (iv) constitute or involve a breach of fiduciary 


                                        18

<PAGE>


responsibility within the meaning of ERISA Section 502(1) or otherwise 
violate Part 4 of Subtitle B of Title I of ERISA.

      3.24  LICENSES AND PERMITS.  Nu-Metrics has all governmental licenses 
and permits and other governmental authorizations and approvals required for 
the conduct of its business  as presently conducted ("Permits").  SCHEDULE 
3.24 hereto includes a list of all Permits.

      3.25  RELATIONS WITH SUPPLIERS AND CUSTOMERS.  Neither Nu-Metrics nor 
the Shareholders is required to provide any bonding or other financial 
security arrangements in connection with any transaction with any customer or 
supplier. Neither Nu-Metrics nor the Shareholders has received any notice 
that any customer or supplier of Nu-Metrics will cease to do business with 
Nu-Metrics or refuse to do business with Quixote after the consummation of 
the transactions contemplated hereby.

      3.26  INTERESTS IN COMPETITORS, SUPPLIERS AND CUSTOMERS.  Neither the 
Shareholders nor any officer or director of Nu-Metrics nor any entity 
controlled by or under common control with Nu-Metrics have any ownership 
interest in any competitor, supplier or customer of Nu-Metrics or any 
property used in the operation of their businesses.

      3.27  EMPLOYMENT MATTERS.  SCHEDULE 3.27 hereto is a list of all oral 
and written employment or consulting contracts or other agreements or 
arrangements providing for remuneration to which Nu-Metrics is a party or by 
which it is bound, and all these contracts and arrangements are in full force 
and effect. There are no oral contracts or arrangements of the type described 
in the preceding sentence which, individually or in the aggregate, exceed 
$20,000.00 in value.  There have been no claims of defaults and there are no 
facts or conditions which if continued, or with the giving of notice, will 
result in a default under these contracts or arrangements.

      3.28  DISCRIMINATION:  OCCUPATIONAL SAFETY; LABOR.  No person or party 
(including, but not limited to, governmental agencies of any kind) has any 
claim, or basis for any action or proceeding, against Nu-Metrics arising out 
of any statute, ordinance or regulation relating to discrimination in 
employment or employment practices or occupational safety and health 
standards (including, but without limiting the foregoing, The Fair Labor 
Standards Act, as amended; Title VII of the Civil Rights Act of 1964, as 
amended; 42 U.S.C. 1981 or the Age Discrimination in Employment Act of 1967, 
as amended), which, if upheld, would have an adverse effect on the assets, 
properties, businesses or conditions, financial or otherwise, of Nu-Metrics. 
There is no pending or threatened federal or state equal employment 
opportunity enforcement action or labor dispute, strike, or work stoppage 
affecting any business of  Nu-Metrics.  Nu-Metrics has no collective 
bargaining or similar agreements, nor does it have any obligation to bargain 
with any labor organization as the representative of their employees, and 
there is neither pending, or to Nu-Metrics' knowledge threatened, any labor 
dispute, strike or work stoppage which affects or which may affect 
Nu-Metrics' business or which may interfere with the continued operations of 
Nu-Metrics.  No present or former employee of Nu-Metrics has any claim 
against it for (a) overtime pay, other than overtime


                                        19

<PAGE>


pay for the current payroll period, (b) wages or salary (excluding bonuses 
and amounts accruing under pension and profit sharing plans) for any period 
other than the current payroll period, (c) vacation, time off or pay in lieu 
of vacation or time off, except as set forth on SCHEDULE 3.28, or (d) any 
violation of any statute, ordinance or regulation relating to minimum wages 
or maximum hours of work.

      3.29  RELATED TRANSACTIONS.  Nu-Metrics has not made or entered into 
any loan, contract, lease, commitment, arrangement or understanding with any 
of its officers, directors, employees, shareholders or any entity controlled 
by or under common control with  Nu-Metrics, except normal compensation 
arrangements with officers, all of which are reasonable in amount and 
terminable by Nu-Metrics on 30 days' notice.

      3.30  BROKERS AND FINDERS.  Neither Nu-Metrics, nor the Shareholders 
(nor any of their respective officers, directors, employees, affiliates, 
associates, or family members), have employed any broker, finder or 
investment banker, or incurred any liability for any brokerage fees, 
commissions or finders' fees in connection with this Agreement or the 
transactions contemplated hereby.

      3.31  QUESTIONABLE PAYMENTS.  Neither Nu-Metrics nor the Shareholders, 
nor any director, officer, agent, employee or other person associated with or 
acting on behalf of Nu-Metrics have directly or indirectly:  (a) used any 
corporate funds for unlawful contributions, gifts, entertainment or other 
unlawful expenses relating to political activity; (b) made any unlawful 
payment to government officials or employees or to political parties or 
campaigns from corporate funds; (c) violated any provision of the Foreign 
Corrupt Practices Act of 1977, as amended; (d) established or maintained any 
unlawful or unrecorded fund of corporate monies or other assets; (e) 
intentionally made any false or fictitious entry on the books or records of 
Nu-Metrics; (f) made any bribe, payoff, influence payment, kickback or other 
unlawful payment; or (g) made any bribe or other payment of a similar or 
comparable nature to any person or entity, private or public, regardless of 
form, to obtain favorable treatment in securing business or to obtain special 
concessions or treatment.  Except for those listed on SCHEDULE 3.31, 
Nu-Metrics has no foreign assets.

      3.32  BOOKS AND RECORDS.  The books and records of Nu-Metrics have been 
maintained in accordance with commercially reasonable business and 
bookkeeping practices and accurately reflect in all respects the business, 
assets, properties, rights, obligations, liabilities and operations of 
Nu-Metrics.

      3.33  BANK ACCOUNTS; SAFE DEPOSIT BOXES.  SCHEDULE 3.33 hereto sets 
forth the names and locations of all banks in which Nu-Metrics has accounts 
or safe deposit boxes and the names of all persons authorized to draw thereon 
or to have access thereto.

      3.34  FULL DISCLOSURE.  Nu-Metrics and the Shareholders have disclosed 
in writing in, or pursuant to, this Agreement all facts material to the 
business, operations, assets or condition (financial or otherwise) of 
Nu-Metrics.  No representation or warranty to Quixote


                                        20

<PAGE>


contained in this Agreement, and no statement contained in the disclosure, 
schedules to this Agreement, any certificate, list or other writing furnished 
to Quixote pursuant to the provisions hereof, contains any untrue statement 
of a material fact or omits to state a material fact necessary in order to 
make the statements herein or therein not misleading.

      3.35  EFFECT OF CERTIFICATES.  All representations and warranties made 
in certificates of Nu-Metrics and the officers of Nu-Metrics and/or the 
Shareholders delivered hereunder shall be deemed to be additional 
representations and warranties of Nu-Metrics and the Shareholders, 
respectively.

      3.36  SOURCE CODE.  Except as set forth in SCHEDULE 3.36, Nu-Metrics 
owns all rights, title and interest in and to the source codes for all of its 
software products and has not distributed any copies of such source codes to 
any third parties, and Nu-Metrics has not agreed to pay to any individual or 
entity any royalty, commission or other amount on account of sales of their 
software products.

      3.37  LICENSES AND ROYALTIES.  Except as set forth on SCHEDULE 3.37 
hereto, Nu-Metrics is not a licensee under any license, including, without 
limitation, licenses with respect to source codes used or to be used in 
Nu-Metrics' software products, and has no obligation to pay royalties to any 
third party in connection therewith.  Nu-Metrics has not  granted to any 
individual or entity any rights or security interests with respect to the 
source codes for Nu-Metrics' software products.

      3.38  ADEQUACY OF DOCUMENTATION.  Except as set forth in SCHEDULE 3.38, 
the technical documentation includes the annotated source code, system 
documentation, statements or principles of operation, and schematics for all 
of the software products currently maintained or licensed Nu-Metrics, as well 
as any pertinent commentary or explanation that may be necessary to render 
such materials understandable and usable by a trained computer programmer 
familiar with the relevant compilers, tools and platform (the "Technical 
Documentation").

      3.39  THIRD-PARTY COMPONENTS IN SOFTWARE PROGRAMS.  Nu-Metrics has 
validly and effectively obtained the right and license to use, copy, modify 
and distribute any third-party programming and materials contained in 
Nu-Metrics' software products and the Technical Documentation pursuant to 
licenses from third parties as set forth in SCHEDULE 3.39.

      Except as otherwise provided in SCHEDULE 3.39, Nu-Metrics' software 
products and the Technical Documentation contains no other programming or 
materials in which any third party may claim superior, joint or common 
ownership, including any right or license, and, do not contain derivative 
works of any programming or materials not owned in their entirety by 
Nu-Metrics. 

      3.40  THIRD-PARTY INTERESTS OR MARKETING RIGHTS IN SOFTWARE PROGRAMS.  
All of Nu-Metrics' standard form customer contracts constitute only end-user 
agreements, each of


                                        21

<PAGE>


which grants the end-user thereunder solely the non-exclusive right and 
license to use an identified software product of Nu-Metrics and related user 
documentation, for internal purposes only.  There are no contracts, 
agreements, licenses or other commitments or arrangements in effect with 
respect to the development, marketing, distribution, licensing, or promotion 
of Nu-Metrics' software products or any other inventory, the Technical 
Documentation, or Nu-Metrics' Intellectual Assets with any independent 
salesperson, distributor, sublicensor, or other remarketer or sales 
organization, except for Contracts identified in SCHEDULES 3.14 and 3.36 and 
3.39.

      3.41  NO VIRUS WARRANTIES.  The software products, as delivered to 
Quixote, shall be free of any computer instructions (including, but not 
limited to, computer instructions commonly referred to as Trojan Horses, 
anomalies, worms, self-destruct mechanisms, or time/logic bombs) which are 
intended to interfere with or frustrate the use of the software products, any 
portion thereof, or other software or computer hardware, whether or not 
currently in effect with respect to any copy of Nu-Metrics' software products.

      3.42  SOFTWARE:  PHYSICAL MEDIA.  Nu-Metrics' software products, other 
than that currently under development, will operate in accordance with the 
Technical Documentation.  The software products and any licenses or other 
rights connected therewith, express or implied, will not infringe any other 
person's or entity's intellectual property rights.  Each copy of the software 
product is free from physical defects in the media that tangibly embodies the 
copy.

      3.43  YEAR 2000 COMPLIANCE.  Nu-Metrics' business, operations and 
products, including, without limitation, its Information Technology (as 
hereinafter defined) are Year 2000 Compliant (as hereinafter defined).  
Nu-Metrics has made appropriate inquiry of its material suppliers, 
distributors and vendors as to whether such parties are Year 2000 Compliant 
and, to the best of Nu-Metrics' knowledge, such parties are Year 2000 
Compliant.  "Year 2000 Compliant" means that Information Technology is 
designed to be used prior to, during and after the calendar Year 2000 A.D., 
and Information Technology used during each such time period will accurately 
receive, provide and process date/time data (including, but not limited to, 
calculating, comparing and sequencing) from, into and between the 20th and 
21st centuries, including the years 1999 and 2000, and leap-year calculations 
and will not malfunction, cease to function, or provide invalid or incorrect 
results as a result of date/time data.  "Information Technology" means 
computer software, computer firmware, computer hardware (whether general or 
specific purpose), and other similar or related items of automated, 
computerized, or software system(s) that comprise any portion of its products 
or are used or relied on by Nu-Metrics in the conduct of its business.

      3.44  MATERIAL MISSTATEMENTS OR OMISSIONS.  No representation or 
warranty by either Nu-Metrics or the Shareholders in this Agreement nor any 
documents, exhibits, certificates or schedules furnished to Quixote pursuant 
hereto, contains or will contain any untrue statement of a material fact, or 
omits or will omit to state any material fact necessary to make the 
statements or facts contained therein not misleading. The copies of all 
documents


                                        22

<PAGE>


furnished to Quixote hereunder are true and complete copies of the originals 
thereof in all material respects.

                                      ARTICLE IV

                      REPRESENTATIONS AND WARRANTIES OF QUIXOTE

      Quixote represents and warrants to Nu-Metrics and the Shareholders as 
follows:

      4.1   ORGANIZATION AND QUALIFICATION.  Quixote is a corporation duly 
organized, validly existing and in good standing under the laws of the State 
of Delaware and has the corporate power and authority to enter into this 
Agreement and to consummate the transactions contemplated hereby.

      4.2   AUTHORITY.  The execution and delivery of this Agreement and the 
consummation of the transactions contemplated hereby have been duly and 
validly authorized by Quixote, and no other corporate proceedings on the part 
of Quixote are necessary to authorize this Agreement or to consummate the 
transactions contemplated hereby.  This Agreement has been duly and validly 
executed and delivered by Quixote and constitutes legal, valid and binding 
agreements of Quixote.

      4.3   CONSENTS AND APPROVALS.  Except as set forth on SCHEDULE 4.3, 
there is no authorization, consent, order or approval of, or notice to or 
filing with, any individual or entity required to be obtained or given in 
order for Quixote to consummate the transactions contemplated hereby and 
fully perform its obligations hereunder.

      4.4   ABSENCE OF CONFLICTS.  The execution, delivery and performance by 
Quixote of this Agreement (including, without limitation, the offering, 
issuance and sale of the Acquisition Stock) and the consummation by Quixote 
of the transactions contemplated hereby will not, with or without the giving 
of notice or the lapse of time, or both, (i) violate any provision of law, 
statute, rule or regulation to which Quixote is or was subject, (ii) violate 
any order, judgment or decree which is or was applicable to Quixote or (iii) 
conflict with, or result in a breach or default under, any term or condition 
of the Certificates of Incorporation or By-Laws of Quixote or any agreement 
or other instrument to which it is a party or by it is bound.

      4.5   LITIGATION AND ADMINISTRATIVE PROCEEDINGS.  There is no claim, 
action, suit, proceeding or investigation in any court or before any 
governmental or regulatory authority pending or, to the best knowledge of 
Quixote, threatened against or affecting Quixote which seeks to enjoin or 
obtain damages in respect of the transactions contemplated hereby.

      4.6   BROKERS AND FINDERS.  Quixote has not employed any broker, finder 
or investment banker, or incurred any liability for any brokerage fees, 
commissions or finders' fees in connection with this Agreement or the 
transactions contemplated by this Agreement.


                                        23

<PAGE>


      4.7   CONDUCT OF BUSINESS.  Quixote presently intends to conduct 
business it acquires from Nu-Metrics in Uniontown, Pennsylvania.

                                     ARTICLE V
                                          
                     COVENANTS RELATING TO CONDUCT OF BUSINESS

      5.1   CONDUCT OF BUSINESS.

            (a)   CONDUCT OF BUSINESS BY NU-METRICS.  During the period from 
the date of this Agreement to the Closing Date, Nu-Metrics shall carry on its 
business in the usual, regular and ordinary course in substantially the same 
manner as heretofore conducted and, to the extent consistent therewith, use 
all reasonable efforts to preserve intact its current business organizations, 
keep available the services of its current officers and employees, preserve 
its relationships with customers, suppliers, licensors, licensees, 
distributors and others having business dealings with it to the end that its 
goodwill and ongoing businesses shall be unimpaired at the Closing Date.  
Without limiting the generality of the foregoing, during the period from the 
date of this Agreement to the Closing Date, Nu-Metrics shall not:

            (i)   (x) declare, set aside or pay any dividends on, or make any
      other distributions in respect of, any of its capital stock (other than
      the distribution of Retained Assets set forth in Section 1.4 hereof), (y)
      split, combine or reclassify any of its capital stock or issue or
      authorize the issuance of any other securities in respect of, in lieu of
      or in substitution for shares of its capital stock or (z) purchase, redeem
      or otherwise acquire any shares of capital stock of Nu-Metrics or any
      other securities thereof or any rights, warrants or options to acquire any
      such shares or other securities;

            (ii)  issue, deliver, sell, pledge or otherwise encumber any shares
      of its capital stock, any other voting securities or any securities
      convertible into, or any rights, warrants, or options to acquire, any such
      shares, voting securities or convertible securities;

            (iii) amend its articles of incorporation, by-laws or other
      comparable charter or organizational documents;

            (iv)  acquire or agree to acquire (x) by merging or consolidating
      with, or by purchasing a substantial portion of the assets of, or by any
      other manner, any business or any corporation, partnership, joint venture,
      association or other business organization or division thereof or (y) any
      assets that individual or in the aggregate are material to Nu-Metrics,
      except purchases of inventory in the ordinary course of business
      consistent with past practice;


                                        24

<PAGE>


            (v)   sell, lease, license, mortgage or otherwise encumber or
      subject to any lien or otherwise dispose of any of its properties or
      assets;

            (vi)  (x) incur any indebtedness, except for short term borrowings
      incurred in the ordinary course of business consistent with past practice,
      (y) make any loans, advances or capital contributions to, or investments
      in, any other person;

            (vii) make or agree to make any equipment leases or any new capital
      expenditure or capital expenditures which are individually in excess of
      $2,000.00 or in the aggregate are in excess of $5,000.00;

            (viii) make any tax election that could reasonably be expected
      to have a material adverse effect or settle or compromise any income tax
      liability;

            (ix)  pay, discharge, settle or satisfy any claims, liabilities or
      obligations (absolute, accrued, asserted or unassorted, contingent or
      otherwise), other than the payment, discharge or satisfaction, in the
      ordinary course of business consistent with past practice or in accordance
      with their terms, of liabilities reflected or reserved against in, or
      contemplated by, the most recent Financial Statements or incurred since
      the date of such financial statements in the ordinary course of business
      consistent with past practice;

            (x)   except in the ordinary course of business, modify, amend or
      terminate any material contract or agreement to which Nu-Metrics is a
      party or waive, release or assign any material rights or claims
      thereunder;

            (xi)  take any action that would prevent Quixote from making an
      election under Section 338(h)(10) of the Code (and any comparable election
      under state, local or foreign tax law) with respect to the acquisition of
      Nu-Metrics by Quixote;

            (xii) take any action to institute any new severance or 
      termination pay practices with respect to any directors, officers or 
      employees of Nu-Metrics or to increase the benefits payable under its 
      severance or termination pay practices in effect on the date hereof;

            (xiii) adopt or amend, in any material respect, except as may
      be required by applicable law or regulation, any collective bargaining,
      bonus, profit sharing, compensation, stock option, restricted stock,
      pension, retirement, deferred compensation, employment or other employee
      benefit plan, agreement, trust, fund, plan or arrangement for the benefit
      or welfare of any directors, officers or employees; or

            (xiv) authorize any of, or commit or agree to take any of, the
      foregoing actions.


                                        25

<PAGE>


            (b)   NEGOTIATIONS WITH OTHERS.  Neither the Shareholders nor 
Nu-Metrics shall, directly or indirectly, through any officer, director, 
employee, representative or agent thereof, solicit or encourage (including by 
way of furnishing nonpublic information) or take other action to facilitate 
any inquiries or the making of any proposal that constitutes or may 
reasonably be expected to lead to an Acquisition Proposal (as defined below) 
from any person, or engage in any discussions or negotiations relating 
thereto or in furtherance thereof or accept any acquisition proposal.  For 
the purposes of this Agreement, "Acquisition Proposal" means inquiries or 
proposals regarding (i) any merger, consolidation, sale of substantial assets 
or similar transactions involving Nu-Metrics, (ii) sale of 10% or more of the 
outstanding shares of capital stock of Nu-Metrics or similar transactions 
involving Nu-Metrics, or (iii) any public announcement of a proposal, plan or 
intention to do any of the foregoing or any agreement to engage in any of the 
foregoing.  Nu-Metrics and the Shareholders shall immediately cease and cause 
to be terminated any existing discussions or negotiations with any parties 
conducted prior to the date of this Agreement with respect to any of the 
foregoing.

            (c)   NOTIFICATION OF CERTAIN MATTERS.  Nu-Metrics and the 
Shareholders shall give prompt notice to Quixote, and Quixote shall give 
prompt notice to Nu-Metrics and the Shareholders of: (i) the occurrence or 
failure to occur, of any event which such party believes would be likely to 
cause any of its representations or warranties contained in this Agreement to 
be untrue or inaccurate at any time from the date hereof to the Closing Date 
and (ii) any failure of Nu-Metrics and any of the Shareholders on the one 
hand or Quixote on the other hand, as the case may be, or of any officer, 
director, employee or agent thereof, to comply with or satisfy any covenant, 
condition or agreement to be complied with or satisfied by it hereunder; 
PROVIDED, HOWEVER, that failure to give such notice shall not constitute a 
waiver of any defense that may be validly asserted.

                                      ARTICLE VI

                     COVENANTS OF NU-METRICS AND THE SHAREHOLDERS

      Nu-Metrics and each of the Shareholders, jointly and severally, 
covenant as follows:

      6.1   CONSENTS AND APPROVALS.  Nu-Metrics and the Shareholders agree to 
use all reasonable efforts to make all registrations, filings and 
applications, and give all notices and obtain all governmental and other 
consents, approvals, orders, qualifications and waivers necessary for the 
consummation of the transactions contemplated by, or the performance by 
Nu-Metrics and the Shareholders of any of their obligations under, this 
Agreement, or which may become reasonably necessary or desirable in 
connection with any of the foregoing, in each case upon terms and conditions 
reasonably satisfactory to Quixote and its counsel.

      6.2   CLOSING RETURNS.  Quixote will cooperate with the Shareholders to 
file, or cause to be prepared and filed, on a timely basis all Returns of 
Nu-Metrics due after the Closing Date and attributable to periods ending on 
or before the Closing Date (the "Pre-


                                        26

<PAGE>


Closing Periods"), including without limitation, federal and state income tax 
returns for the short period ending on the Closing Date (the "Closing 
Returns"), which Closing Returns shall include any income or gains 
attributable to the Section 338(h)(10) election and the distribution of the 
Retained Assets.  Quixote shall direct the preparation and filing of the 
Closing Returns; PROVIDED, HOWEVER, that the Shareholders shall be 
responsible for paying any Taxes shown on such Closing Returns or otherwise 
attributable to the Pre-Closing Periods.  The Closing Returns shall be 
prepared by SLCC subject to the review and approval of PWC.

      6.3   ACCESS TO INFORMATION.

            (a)   Nu-Metrics and the Shareholders shall allow Quixote to have 
complete access at all reasonable times to its officers, employees, agents, 
properties, books and records, and shall furnish Quixote all financial, 
operating and other data and information as Quixote, through its officers, 
employees or agents, may reasonably request.

            (b)   No investigation pursuant to this Section 6.3 shall affect, 
add to or subtract from any representations or warranties or the conditions 
to the obligations of the parties hereto to effect the Acquisition.

      6.4   NON-COMPETITION AND RIGHT OF FIRST REFUSAL.  For the purposes of 
this Section 6.4, the business of Quixote or Nu-Metrics or any of their 
respective affiliates shall include:  marking, sensors, detection and 
measuring devices, crash barriers, safety and warning devices, access and 
access-blocking devices, energy absorption, anti-icing, de-icing, directional 
devices, signage, glare screening, telemetric control, or radio or other 
information transmission systems for the highway, parking lot, airport, 
railroad and motor sports industries (collectively, the "Business")

            (a)   Sampey hereby covenants and agrees that, for a period of 
five (5) years from the Closing Date (the "Non-Compete Period"), he shall not 
directly or indirectly (i) license, assign, transfer, convey, sell or grant 
any rights whatsoever in any technology or intellectual property of any kind 
(including, without limitation, patents, trademarks, service marks, trademark 
registrations, service mark registrations, logos, trade names, assumed names, 
copyrights and copyright registrations and all applications therefor) in any 
way related to, or engage in, any business competitive with the Business of 
Quixote or Nu-Metrics, or any of their respective affiliates, (ii) solicit or 
otherwise engage with any customers or clients of Quixote or Nu-Metrics in 
any transactions which are in competition with the Business of Quixote or 
Nu-Metrics, (iii) assist any person in the development, maintenance, 
manufacture, sale, licensing, distribution or marketing of products or 
technology in competition with the Business of Quixote, Nu-Metrics or any of 
their respective affiliates, (iv) act as a consultant to or advisor for any 
entity, other than Quixote, engaged in whole or in part in a business in 
competition with the Business of Quixote or Nu-Metrics or any of their 
respective affiliates, or (v) solicit for himself or herself or on behalf of 
a competing organization the employment of any employee of Quixote or 
Nu-Metrics, in


                                        27

<PAGE>


each case in the United States of America, Canada, Australia, New Zealand, 
Western Europe and Japan, and in each case excluding passive investment 
interests of less than two percent (2%) in corporations whose stock is 
registered under the Securities Exchange Act of 1934, as amended.

            During the Non-Compete Period, Quixote and Sampey shall negotiate 
in good faith on licensing terms for any such technology and intellectual 
property (including, without limitation, patents, trademarks, service marks, 
trademark registrations, service mark registrations, logos, trade names, 
assumed names, copyrights and copyright registrations and all applications 
therefor) developed, in whole or in part by Sampey, relating to the Business 
of Quixote or Nu-Metrics or any of their respective affiliates (collectively, 
"Sampey Inventions"); and if such negotiations result in a mutually 
acceptable agreement, Sampey shall assign to Quixote all rights relating to 
such Sampey Inventions. Notwithstanding any failure of Quixote and Sampey to 
agree on assignment or licensing terms for such Sampey Inventions, Sampey's 
obligations and covenants in this Section 6.4(a) shall remain in full force 
and effect.

            In consideration of the non-compete covenant stated in this 
Section 6.4, on January 5, 1999, Quixote shall deliver to Sampey $100,000 in 
immediately available funds by wire transfer to such bank account as Sampey 
shall specify.

            (b)   After the Non-Compete Period, Quixote shall have a right of 
first refusal to obtain licenses with respect to all Sampey Inventions (the 
"Right of First Refusal").  If, after the Non-Compete Period, Sampey receives 
a legitimate offer from a third party to obtain licenses with respect to 
Sampey Inventions, Sampey shall require such offer, containing all material 
terms thereof, to be submitted to Sampey in writing (such written offer is 
hereinafter referred to as an "Offer").  Upon receipt of an Offer, Sampey 
shall notify Quixote thereof, and provide Quixote a complete and fully 
legible copy of the Offer accompanied by Sampey's irrevocable statement that 
he is prepared to accept said Offer (collectively, the "Offer Notice"), and 
Quixote shall have sixty (60) days thereafter within which to notify Sampey 
whether it elects to exercise its Right of First Refusal with respect to such 
Sampey Invention (the "Quixote Notice").  If Quixote notifies Sampey that it 
does not wish to exercise its Right of First Refusal with respect to such 
Sampey Invention, or if Quixote fails to exercise its Right of First Refusal 
then Sampey may proceed to consummate the transaction contemplated by the 
Offer, provided that such transaction may only be consummated upon the exact 
terms of the Offer to the party identified therein, without substitutions of 
terms, conditions or payment methods.  If such transaction is not consummated 
in such manner, then prior to the closing thereof, Sampey shall notify 
Quixote, and the procedures set forth above shall again apply.  If Quixote 
elects to exercise its Right of First Refusal, Quixote and Sampey shall 
consummate the transaction upon the same terms as are contained in the Offer, 
provided however that the date of closing of such transaction shall be the 
later of the date of closing set forth in the Offer or thirty (30) days after 
the date of the Quixote Notice.  Notwithstanding the foregoing, the Right of 
First Refusal will not


                                        28

<PAGE>


prevent Sampey from developing and marketing a Sampey Invention himself or 
through an entity directly controlled by Sampey so long as no license to an 
unrelated entity is involved.

            (c)   In the event that the provisions of this Section 6.4 should 
ever be deemed to exceed the scope of business, time or geographic 
limitations permitted by applicable law, then such provisions shall be and 
are hereby reformed to the maximum scope, time or geographic limitations 
permitted by such applicable law.

      6.5   338(h)(10) ELECTION.  The Shareholders agree to cooperate with 
Quixote in making an election under Section 338(h)(10) of the Code (and any 
comparable election under state, local or foreign tax law) with respect to 
the acquisition of Nu-Metrics by Quixote. In particular, and not by way of 
limitation, in order to effect such election, the Shareholders will, jointly 
with Quixote, execute all necessary copies of Internal Revenue Form 8023 and 
all attachments required to be filed therewith pursuant to applicable 
Treasury Regulations within the time period prescribed for filing such form 
by law. 

      6.6   CONSULTING.  After Closing, Sampey shall remain as a consultant 
to Quixote for a period of one year to insure an orderly transition. During 
such period, Sampey shall, upon Quixote's request, devote up to (25%) of his 
time to consulting activities and be paid on a per diem basis, based on his 
current direct compensation, prorated for the consulting period.  The actual 
dates and times during which Sampey devotes his efforts to consulting 
activities shall be in Sampey's reasonable discretion.

      6.7   FURTHER ASSURANCES.  The Shareholders shall from time to time, at 
the request of Quixote and at Quixote's sole cost and expense, execute and 
deliver such other documents and take such other actions as shall be 
reasonably necessary or appropriate to consummate fully the transactions 
contemplated hereby; PROVIDED, HOWEVER, in all events, each party will pay 
its own attorney fees in connection therewith.

                                     ARTICLE VII

                                 COVENANTS OF QUIXOTE

      Quixote covenants as follows:

      7.1   RETENTION OF RECORDS.  After the Closing Date, Quixote will 
retain all of Nu-Metrics' books and records in accordance with Quixote's 
policies for retention of its own books and records, and upon reasonable 
notice and during Quixote's regular business hours and at reasonable 
intervals, will provide the Shareholders, and their respective agents and 
representatives designated in writing, access to such books and records, 
concerning periods prior to the Closing Date.

      7.2   TERMINATION AGREEMENTS.  From the Closing Date through and 
including December 31, 1999, Quixote shall use best efforts to continue to 
employ or maintain


                                        29

<PAGE>


contractual arrangements with key Nu-Metrics personnel in positions 
comparable to their current responsibilities and compensation; PROVIDED, 
HOWEVER, that Quixote may modify the positions of any such key personnel 
(including, without limitation, their responsibilities and compensation) with 
their consent and may terminate any such key personnel with payment (a) as 
specified in such individual's employment contract, or (b) of an amount equal 
to the base salary which such employee would have received pursuant to such 
employment contract from the date of such termination to December 31, 1999. 
Subsequent to December 31, 1999, Quixote may terminate all existing 
employment contracts or other agreements with key personnel, if such 
termination is consistent with the terms of such employment contracts or 
other agreements, and place such personnel under the same conditions of 
employment as other comparable Quixote employees.

      7.3   FURTHER ASSURANCES.  Quixote shall from time to time execute and 
deliver such other documents and take such other actions as shall be 
reasonably necessary or appropriate to consummate fully the transactions 
contemplated hereby.

                                     ARTICLE VIII

                                   MUTUAL COVENANTS

      Each of the parties hereto covenants as follows:

      8.1   CONFIDENTIALITY.  Except as otherwise required by law or judicial 
or administrative proceedings, including proceedings between the parties with 
respect to the transactions contemplated hereby, and then only to the extent 
specifically required by such proceedings, and except for public 
announcements on the advice of counsel, each of the parties agrees not to (i) 
disclose any Confidential Information (defined hereinbelow) of any other 
party, or the terms of this Agreement, to any individual or entity (other 
than its directors, officers, employees, agents and representatives with a 
need to know such Confidential Information in order to consummate the 
transactions contemplated hereby and then only if reasonable steps are taken 
with such parties to preserve the confidentiality thereof) or (ii) use any 
Confidential Information for any purpose other than, with respect to Quixote, 
operating the acquired business. "Confidential Information" shall mean any 
secret or confidential information of the business of designing and 
developing electronic instruments for the highway transportation industry, 
Nu-Metrics or Quixote, including, but not limited to, customer information, 
financial information, technical information, details or information 
concerning contracts, trade secrets, marketing information or any other data, 
information or proprietary information of or relating to the such business, 
Nu-Metrics, Quixote or any affiliate thereof, or their respective products or 
services.  No obligations shall exist under this Agreement with respect to 
Confidential Information that (i) is publicly known at the time of the 
disclosure or becomes publicly known through no wrongful act or failure of 
Nu-Metrics, the Shareholders, or Quixote, (ii) is disclosed by a third party 
which does not have


                                        30

<PAGE>


a confidential relationship with either Nu-Metrics, the Shareholders, or 
Quixote, and which was rightfully acquired by third party, or (iii) is 
legally compelled to be disclosed pursuant to a subpoena, summons, order or 
other judicial or governmental process, provided that the parties hereto 
provide prompt notice of any such subpoena, summons, order or other judicial 
or governmental process to such other parties of the Confidential 
Information, so as to allow the parties an opportunity to oppose such process.

      8.2   CONSISTENT TAX REPORTING.  The parties agree for tax purposes to 
report the transactions contemplated by this Agreement, and to treat any 
subsequent related transactions or items, in a manner consistent in all 
respects with the terms and provisions of this Agreement.  Each party shall 
cooperate with the other parties as appropriate for all relevant tax purposes 
relating to the transactions contemplated by this Agreement.

      8.3   COOPERATION.  The parties agree to cooperate for all other 
reasonable purposes after the Closing, including with respect to any audit by 
any taxing authority of any of the income tax or other tax returns of 
Nu-Metrics.

                                   ARTICLE IX

                       CONDITIONS TO OBLIGATIONS OF NU-METRICS
                                AND THE SHAREHOLDERS

      The obligations of Nu-Metrics and the Shareholders to consummate the 
transactions contemplated hereby is subject to the satisfaction on or prior 
to the Closing Date of the following conditions:

      9.1   REPRESENTATIONS AND WARRANTIES.  The representations and 
warranties of Quixote shall be true and accurate on and as of the Closing 
Date with the same effect as though such representations and warranties had 
been made on and as of such date.

      9.2   PERFORMANCE.  Quixote shall have performed in all material 
respects all covenants and agreements required by this Agreement to be 
performed by them on or before the Closing Date.

      9.3   FILINGS; CONSENTS: WAITING PERIODS.  All registrations, filings, 
applications, notices, transfers, consents, approvals, orders, 
qualifications, waivers and other actions listed on SCHEDULE 4.3 hereto or 
otherwise required of any persons or governmental authorities or private 
agencies in connection with the consummation of the transactions contemplated 
by and the performance by Quixote of its obligations under this Agreement 
shall have been made or obtained and all applicable waiting periods shall 
have expired or been terminated.

      9.4   NO INJUNCTION.  At the Closing Date, there shall be no 
injunction, restraining order or decree of any nature of any court or 
governmental body in effect which restricts or prohibits the consummation of 
the transactions contemplated by this Agreement.


                                        31


<PAGE>


                                      ARTICLE X

                         CONDITIONS TO OBLIGATIONS OF QUIXOTE

      The obligation of Quixote to consummate the transactions contemplated 
hereby is subject to the satisfaction on or prior to the Closing Date of the 
following conditions:

      10.1  REPRESENTATIONS AND WARRANTIES.  The representations and 
warranties of Nu-Metrics and the Shareholders shall be true and accurate on 
and as of the Closing Date with the same effect as though such 
representations and warranties had been made on and as of such date.

      10.2  PERFORMANCE.  Nu-Metrics and the Shareholders shall have 
performed all covenants and agreements required by this Agreement to be 
performed by them on or before the Closing Date.

      10.3  FILINGS:  CONSENTS; WAITING PERIODS.  All registrations, filings, 
applications, notices, transfers, consents, approvals, orders, 
qualifications, waivers and other actions of any kind listed on SCHEDULE 3.5 
hereto, including, without limitation, approval of Quixote's board of 
directors to the transactions contemplated by this Agreement, or otherwise 
required of any persons or governmental authorities or private agencies in 
connection with the consummation of the transactions contemplated by, and the 
performance by Nu-Metrics and the Shareholders of their respective 
obligations under this Agreement shall have been made or obtained and all 
applicable waiting periods shall have expired or been terminated, in each 
case upon terms and conditions reasonably satisfactory to Quixote.

      10.4  NO LITIGATION.  No action, suit or proceeding shall have been 
instituted by any person or entity, or threatened by any governmental agency 
or body, before a court or governmental body, to restrain or prevent the 
consummation of the transactions contemplated by, or the performance by 
Nu-Metrics or the Shareholders of their respective obligations under, this 
Agreement or which seeks other relief with respect to any of such 
transactions or which could reasonably be expected to have a materially 
adverse effect on the businesses, results of operations, assets, financial 
condition or prospects of Nu-Metrics.  At the Closing Date, there shall be no 
injunction, restraining order or decree of any nature of any court or 
governmental agency or body in effect which restrains or prohibits the 
consummation of the transactions contemplated by this Agreement.

      10.5  LEGAL OPINION.  Quixote shall have received the written opinion, 
dated the Closing Date, of Leskinen & Cook, substantially in the form 
attached hereto as EXHIBIT B.

      10.6  DUE DILIGENCE INVESTIGATION.  Quixote shall have completed a due 
diligence investigation of Nu-Metrics, the results of which shall have been 
satisfactory to Quixote in its sole discretion.


                                        32

<PAGE>


      10.7  SHAREHOLDER APPROVAL.  This Agreement and the Acquisition shall 
have been approved and adopted by the consent of the Shareholders in 
accordance with applicable law and the Articles of Incorporation and By-laws 
of Nu-Metrics.

      10.8  DELIVERY.  At the Closing, the documents referenced in ARTICLE XI 
shall be delivered to Quixote.

      10.9  338(h)(10) ELECTION.  The acquisition of Nu-Metrics by Quixote 
shall qualify for election under Section 338(h)(10) of the Code (and any 
comparable election under state, local or foreign tax law).

      10.10 ACCOUNTANT'S CONSENT.  Nu-Metrics shall cause SLCC to consent to 
the release of Nu-Metrics' audited financials for the year ended December 31, 
1997 in Quixote's Form 8-K Current Report to be filed with the SEC in 
connection with the transactions contemplated hereby.

                                      ARTICLE XI

                                  CLOSING DELIVERIES

      The following deliveries shall be made at the Closing:

      11.1  STOCK.  The Shareholders shall duly execute and deliver stock 
certificates to Quixote representing all of the Shares with any required 
stock transfer stamps affixed, duly endorsed for transfer or with stock 
powers duly executed in blank attached, in good form for delivery.

      11.2  BOOKS AND RECORDS.  Nu-Metrics shall have caused to be delivered 
to Quixote all of Nu-Metrics' books and records, including without limitation 
the stock transfer and minute books and financial records.

      11.3  LEGAL OPINION.  Nu-Metrics shall cause to be delivered to Quixote 
the written legal opinion of Leskinen & Cook to Nu-Metrics, in substantially 
the form attached hereto as EXHIBIT B.

      11.4  CONSENTS.  Nu-Metrics shall deliver to Quixote all consents and 
approvals required in connection with the performance by Nu-Metrics of its 
obligations under this Agreement and the consummation by Nu-Metrics of the 
transactions contemplated hereby and thereby.

      11.5  CLOSING CERTIFICATES AND RELEASES.  Nu-Metrics shall deliver, or 
cause to be delivered, to Quixote such closing certificates and documents as 
Quixote and its counsel shall reasonably request.


                                        33

<PAGE>


      11.6  CHARTER: GOOD STANDING CERTIFICATES.  Nu-Metrics shall cause to 
be delivered to Quixote Nu-Metrics' Articles of Incorporation, as amended to 
the Closing Date, certified by the Secretary of State of the State of 
Pennsylvania, and good standing and tax certificates from such office, as 
well as from each other jurisdiction in which Nu-Metrics is required to be 
qualified.

      11.7  RESIGNATIONS OF NU-METRICS' OFFICERS AND DIRECTORS.  Nu-Metrics 
shall have caused to be delivered to Quixote resignations, operative as of 
the Closing Date, of all the officers and directors of Nu-Metrics.

      11.8  PERFORMANCE.  The parties hereto shall have performed in all 
material respects all covenants and agreements required by this Agreement to 
be performed by them on or before the Closing Date.

      11.9  PURCHASE PRICE.  Quixote shall deliver the Purchase Price as set 
forth in Section 1.3 hereof upon receipt of all of the closing deliveries and 
satisfaction of all of the closing conditions set forth herein and the 
execution and delivery by all of the parties hereto of this Agreement and the 
other documents, instruments and certificates contemplated hereby and thereby.

      11.10 BANK ACCOUNTS.  Nu-Metrics shall deliver to Quixote evidence 
reasonably satisfactory to Quixote of the removal of all Nu-Metrics personnel 
and Shareholders as authorized signatories or agents from all bank accounts 
of Nu-Metrics.

      11.11 FURTHER ASSURANCES.  Each party shall deliver, or cause to be 
delivered, all other documents required to be delivered at the Closing by the 
other party and shall take all other actions which the other parties may 
reasonably determine necessary or appropriate in order to consummate fully 
the transactions contemplated hereby.

                                     ARTICLE XII

                             SURVIVAL AND INDEMNIFICATION

      12.1  SURVIVAL OF REPRESENTATIONS AND WARRANTIES: COVENANTS.  All 
representations and warranties contained herein or made in writing by any 
party in connection herewith shall survive the Closing Date for a period of 
five (5) years, regardless of any investigation made by or on behalf of any 
party, except for the representations and warranties contained in Section 3.3 
and 3.4, which shall survive indefinitely, and the representations and 
warranties contained in Sections 3.12, 3.19, 3.20, 3.21 and 3.22, or a 
representation or warranty which shall prove to be untrue due to the fraud of 
Nu-Metrics or which in each case shall survive until the expiration of the 
applicable statute of limitations with respect to the subject matter thereof. 
 All covenants contained herein shall survive until performed fully.


                                        34

<PAGE>


      12.2  INDEMNIFICATION.

            (a)   Sampey agrees to indemnify and hold Quixote and their 
affiliates and the respective officers, directors, employees, agents and 
representatives of each of the foregoing (collectively, the 
"Representatives") harmless from and against any and all costs, expenses, 
losses, claims, damages, penalties, fines, liabilities and obligations 
whenever arising or incurred (including, without limitation, amounts paid in 
settlement, costs of investigation and attorneys' fees and expenses) 
(individually, a "Loss," and collectively, "Losses") arising out of or 
relating to (i) any breach of any representation or warranty made by 
Nu-Metrics or the Shareholders and (A) set forth herein or in any related 
schedule or (B) set forth in any closing certificate or other document 
entered into or delivered by Nu-Metrics or the Shareholders in connection 
with this Agreement; (ii) any breach of any covenant, obligation or agreement 
of Nu-Metrics or the Shareholders contained in this Agreement, or set forth 
in any closing certificate or other document entered into or delivered in 
connection with this Agreement; (iii) any fraudulent representation or 
intentional misrepresentation on the part of Nu-Metrics or the Shareholders; 
(iv) any Taxes asserted against Nu-Metrics or Quixote and arising out of or 
related to tax periods ending on or prior to the Closing Date; (v) the 
Shareholders' pro rata share of any Taxes asserted against Nu-Metrics for any 
period beginning before and ending after the Closing Date; (vi) any Tax under 
Code Section 1374 resulting from the transactions contemplated herein 
(including the distribution of the Retained Assets contemplated in Section 
1.4 hereof (and the Section 338(h)(10) election) and (vii) obligations and 
liabilities relating to the Retained Assets and Aircraft Debt.  For purposes 
of this Subparagraph 12.2(a), in the case of any taxable period beginning 
before and ending after the Closing Date, for purposes of determining the 
amount of liability for Taxes attributable to the portion of the taxable 
period ending on or before the Closing Date: (A) in the case of sales, use, 
payroll or excise Taxes or Taxes based upon or related to income, such 
portion of the taxable period shall be deemed to be a separate taxable year 
and Sampey's liability shall be determined by taking into account all items 
of income, gain, loss, deduction or credit on a basis consistent with that 
employed in preparing the federal income tax return of Nu-Metrics for the 
taxable year ending on the Closing Date and the relevant state or local tax 
return for prior years, and (B) in the case of other Taxes, Sampey's 
liability shall equal a pro-rata portion of the liability for taxes for the 
entire taxable period based on the ratio of the number of days from the 
beginning of such taxable period through the Closing Date to the total number 
of days included in such taxable period.

            (b)   Except as otherwise specifically set forth herein, the 
indemnity provided in this Agreement shall not commence until the cumulative 
amount of all Losses shall exceed One Hundred Thousand Dollars ($100,000.00) 
in the aggregate (the "Basket"); PROVIDED, HOWEVER, that if the Basket is 
reached, the indemnity provided for herein shall apply to all Losses, 
including, without limitation, the Basket.  Notwithstanding the foregoing, 
the Basket shall not apply to the indemnities provided in this Agreement for 
breach of any non-competition or confidentiality obligation contained herein 
or in any other closing document, any failure of title to the Shares, or any 
fraud, willful misconduct, gross negligence or criminal action on the part of 
the Shareholders or Nu-Metrics, and shall not


                                        35

<PAGE>


apply to any liability under Section 12.7, Subparagraph 12.2(a)(iv), 
Subparagraph 12.2(a)(v) or Subparagraph 12.2(a)(vi) hereof, and 
notwithstanding anything contained or implied in this Agreement, the 
indemnity obligations set forth herein above this sentence shall survive the 
Closing without limitation except as provided by the applicable statue of 
limitations (including any extension of said statue of limitations).

      12.3  INDEMNIFICATION BY QUIXOTE.  Quixote agrees to indemnify and hold 
the Shareholders and Nu-Metrics and its affiliates and the respective 
officers, directors, employees, agents and representatives of each of the 
foregoing harmless from and against any and all Losses relating to (i) any 
breach of any representation or warranty of Quixote set forth herein or in 
any related schedule, or set forth in any closing certificate or other 
document entered into or delivered by Quixote in connection with this 
Agreement; (ii) any breach of any covenant, obligation or agreement of 
Quixote contained in this Agreement or in any other closing document; and 
(iii) any fraudulent representation or intentional misrepresentation on the 
part of Quixote, unless the claim or cause of action with respect thereto 
arises out of or is related to actions or omissions of Nu-Metrics or the 
Shareholders prior to the Closing Date.

      12.4  INDEMNIFICATION PROCEDURE.  (a) An indemnified party under this 
ARTICLE XII shall give prompt written notice to the indemnifying party (when 
and to the extent that the indemnified party has actual knowledge thereof) of 
any condition, event or occurrence or the commencement of any action, suit or 
proceeding for which indemnification may be sought (each an "Indemnification 
Event"), and through counsel reasonably satisfactory to the indemnified 
party, shall assume the defense thereof or other indemnification obligation 
with respect thereto; PROVIDED, HOWEVER, that any indemnified party shall be 
entitled to participate in any such action, suit or proceeding with counsel 
of its own choice but at its own expense; and PROVIDED, FURTHER, that any 
indemnified party shall be entitled to participate in any such action, suit 
or proceeding with counsel of its own choice at the expense of the 
indemnifying party, if, under applicable canons of ethics, joint 
representation of the indemnifying party and the indemnified party presents a 
conflict of interest.

      In any event, if the indemnifying party fails to assume the defense 
within a reasonable time, the indemnified party may assume such defense or 
other indemnification obligation and the reasonable fees and expenses of its 
attorneys will be covered by the indemnity provided for hereunder.  No 
action, suit or proceeding for which indemnification may be sought shall be 
compromised or settled in any manner which might adversely affect the 
interests of the indemnifying party without the prior written consent of the 
indemnifying party (which shall not be unreasonably withheld); PROVIDED, 
HOWEVER, that the indemnified party may settle any claim or cause of action 
without the indemnifying party's consent, but in such case the indemnifying 
party shall not be required to reimburse the indemnified party for its Losses 
except and to the extent that a court of competent jurisdiction finally 
determines on appeal that the indemnifying party must indemnify the 
indemnified party therefor. Notwithstanding anything in this Section 12.4 to 
the contrary, the indemnifying party shall not, without the prior written 
consent of the indemnified party, (i) settle or compromise any action, suit 
or


                                        36

<PAGE>


proceeding 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 action, suit or proceeding or (ii) settle or compromise any action, suit 
or proceeding in any manner that may materially and adversely affect the 
indemnified party other than as a result of money damages or other money 
payments.  The indemnifying party shall pay all expenses, including 
attorneys' fees, that may be incurred by any indemnified party in enforcing 
the indemnity provided for hereunder.

            (b)   In the case of any proposed or actual assessment of tax 
liabilities for which Quixote is entitled to indemnification from Sampey as 
provided in Section 12.2(a), Quixote shall give written notice to Sampey as 
provided in subparagraph (a) hereof and shall contest such proposed or actual 
assessment through the administrative review or appeal procedures available 
under the relevant tax laws and regulations, PROVIDED, HOWEVER, that Quixote 
shall not be required to contest such proposed or actual assessment unless 
Sampey shall first provide an opinion of counsel, reasonably acceptable to 
Quixote, stating that Nu-Metrics had a reasonable basis for its position. 
Quixote shall keep Sampey fully informed as to the progress of such contest.  
If at any point prior to the termination of the administrative review 
process, Sampey notifies Quixote in writing that he is willing to accept a 
settlement proposed by the IRS or any other tax authority or agency with 
respect to such proposed or actual assessment of tax liabilities, Quixote 
will settle the proposed or actual tax assessment, and Quixote shall 
immediately be entitled to indemnification from Sampey.  If Sampey never 
elects to request Quixote to settle and such administrative review process is 
unsuccessful at eliminating the proposed tax, Quixote shall be entitled to 
pay the tax (and any penalties and interest) and be entitled to 
indemnification from Sampey; provided, that if within ten (10) days of 
receipt from Quixote of notice that it is paying the tax, Sampey notifies  
Quixote of his desire to contest the proposed or assessed tax deficiency in 
the courts, the Sampey shall be entitled to do so provided that (a) if the 
proposed or actual tax deficiency is contested in tax court, Sampey shall pay 
from his own sources any amount of taxes, penalties and interest determined 
to be due and (b) if the proposed or actual tax deficiency is contested by 
suit for refund in any other court, funds shall be provided to Quixote by 
Sampey, Quixote shall pay the tax and if the outcome of the contest 
determines that the tax paid should be refunded, such refund shall be 
returned to Sampey.  Any contest (whether during the administrative review 
process or otherwise) shall be conducted at the sole cost and expense of 
Sampey.

      12.5  OFFSET AGAINST UNPAID AMOUNTS.  Without limiting such other 
rights as Quixote may have and subject to the survival period of the 
representation and warranties contained in Section 12.1, if, prior to the 
time that any payment of the Purchase Price, or any payments under any 
consulting arrangement between Quixote and Sampey is to be delivered, and 
after the Basket has been reached, Quixote has learned of a breach of any 
representation, warranty, covenant or agreement of the Shareholders or 
Nu-Metrics contained in this Agreement, Quixote in its sole discretion may by 
written notice to Sampey deduct from the amount of such payment otherwise 
owed an amount equal to the aggregate of (a) the amount necessary to cure or 
make it whole for such breach or (b) the amount of losses,


                                        37

<PAGE>


damages and expenses incurred or demonstrably in prospect of being incurred 
in connection with or caused by such breach.

      12.6  TREATMENT AS ADJUSTMENT OF PURCHASE PRICE.  Any indemnity payment 
received by a party hereunder shall be treated as an adjustment of the 
Purchase Price.  However, in the event that the Internal Revenue Service or 
any other taxing authority determines that such indemnity payment constitutes 
taxable gain or income to the indemnified party, the indemnifying party shall 
increase the amount otherwise required to be paid so that the indemnified 
party, receives, on an after-tax basis, an amount equal to the amount it 
would have received had the indemnity not resulted in taxable gain or income.

      12.7  LOANS.  With respect to those loans listed on SCHEDULE 12.7 
hereof (the "Loans"), Quixote shall use best efforts to cause the lenders 
thereof to release Sampey from any personal guaranty or surety agreement 
related thereto to which he is a party.  In the event the lenders thereof 
refuse to so release Sampey, Quixote shall indemnify and hold Sampey harmless 
from and against any and all costs, expenses, losses, claims, damages, 
penalties, fines, liabilities and obligations arising from and after the 
Closing Date arising out of or related to any such guaranty or surety 
agreement which has been signed by Sampey for any of the Loans. 

            (a)   One or more of the Loans are subject to the restriction and 
condition that the subject Loan or Loans may be declared to be in default in 
the event that Nu-Metrics, inter alia: (i) merges or consolidates with 
another corporation, (ii) sells, transfers, conveys, or disposes of all or 
any part of its assets except in the ordinary course of business, (iii) 
effects a reorganization, recapitalization, or reclassification of its 
capital stock or equity securities, or (iv) permits a change in its ownership 
of its capital stock or equity securities from that which currently exists.  
Quixote hereby assumes the risk of any such default being declared by any 
lender; and, Quixote shall indemnify and hold Sampey and the Shareholders 
harmless from and against any and all costs, expenses, losses, claims, 
damages, penalties, fines, liabilities, and obligations whatsoever arising 
out of or relating to any such default.  Notwithstanding the provisions of 
the preceding sentence, in all events, Sampey shall pay to the lenders 
thereof (and Sampey shall indemnify and hold Quixote harmless from and 
against) any and all prepayment penalties and other charges arising from any 
such default.

            (b)   Except for any prepayment penalty and other charges as 
mentioned in the last sentence of the preceding paragraph, to the extent that 
Sampey is required to make any payment as the guarantor or surety for any of 
the Loans, Sampey shall be subrogated to the rights of the lender to enforce 
the collection thereof from Nu-Metrics including the rights which any such 
lender might have as a mortgagee and/or secured party.


                                        38

<PAGE>


                                     ARTICLE XIII

                          TERMINATION, AMENDMENT AND WAIVERS

      13.1  TERMINATION.  This Agreement may be terminated at any time prior 
to the Closing Date, whether before or after approval by the Shareholders:

            (a)   by mutual consent of the Boards of Directors of the parties 
hereto;

            (b)   by Nu-Metrics or Quixote if a material breach of any 
provision of this Agreement has been committed and such breach is not waived;

            (c)   by Quixote, if the conditions set forth in Section X hereof 
shall not have been complied with or performed in any material respect and 
such noncompliance or nonperformance shall not have been cured or eliminated 
(or by its nature cannot be cured or eliminated) by Nu-Metrics on or before 
December 31, 1998; or

            (d)   by Nu-Metrics, if the conditions set forth in Section IX 
hereof shall not have been complied with or performed in any material respect 
and such noncompliance or nonperformance shall not have been cured or 
eliminated (or by its nature cannot be cured or eliminated) by Quixote or 
before December 31, 1998; or

            (e)   by Quixote or Nu-Metrics if the Acquisition shall not have 
been consummated on or before December 31, 1998 or such later date as the 
parties hereto agree in writing.

      13.2  EFFECT OF TERMINATION.  In the event of termination of this 
Agreement as provided above, this Agreement shall hereafter become void and 
there shall be no liability or further obligation on the part of Nu-Metrics, 
the Shareholders, Quixote or their respective officers or directors, except 
as set forth in Section 8.1 and Section 14.3 and except that nothing herein 
will relieve any party from liability for breach of this Agreement.

                                     ARTICLE XIV

                                    MISCELLANEOUS

      14.1  AMENDMENT AND MODIFICATION.  Subject to applicable law, this 
Agreement may be amended, modified and supplemented by written agreement of 
the parties.

      14.2  WAIVER OF COMPLIANCE.  Any failure of Nu-Metrics or the 
Shareholders on the one hand, or Quixote, on the other, to comply with any 
obligation herein may be expressly waived hereunder, but such waiver shall 
not operate as a waiver of, or estoppel with respect to, any subsequent or 
other failure.  Any waiver must be in writing and duly executed by the 
appropriate parties.


                                        39

<PAGE>


      14.3  EXPENSES.  Whether or not the transactions contemplated by this 
Agreement shall be consummated, the parties hereto agree that all fees and 
expenses incurred by Nu-Metrics or the Shareholders, on the one hand, and 
Quixote on the other, in connection with this Agreement, and the transactions 
and other actions contemplated thereby or taken in connection therewith, 
shall be borne by Nu-Metrics and the Shareholders, and by Quixote, 
respectively, including, without limitation, all fees of counsel and 
accountants. Notwithstanding the foregoing, in no event shall the costs of 
the Shareholders be passed on to, or paid by Nu-Metrics.

      14.4  NOTICES.  All notices, requests, demands and other communications 
required or permitted hereunder shall be in writing and shall be deemed to 
have been duly given when delivered by hand or by facsimile transmission 
(receipt confirmed), one day after being sent by recognized overnight courier 
or delivery service, freight prepaid, or five days after being mailed, 
certified or registered mail, postage prepaid, return receipt requested:

      (a)   If to Nu-Metrics or the Shareholders to:

                  Nu-Metrics, Inc.
                  University Drive
                  Box 518
                  Uniontown, Pennsylvania  15401
                  Attention:  Mr. Harry R. Sampey, Ph.D
                  Facsimile No.:  412-438-8769

                  with a copy to:

                  Leskinen & Cook
                  55 East Church Street
                  Uniontown, Pennsylvania  15401
                  Attention:  Nicholas J. Cook, Esq.
                  Facsimile No.:  724-437-5760

or to such other person or address as Nu-Metrics or the Shareholders shall 
furnish to Quixote in writing by notice given in the manner set forth in (a) 
above.

            (b)   If to Quixote, to:

                  Quixote Corporation
                  One East Wacker Drive
                  Chicago, Illinois  60601
                  Attention: Joan Riley, Esq., General Counsel
                  Facsimile No.:  312-467-1356


                                        40

<PAGE>


                  with a copy to:

                  Ross & Hardies
                  150 North Michigan Avenue, Suite 2500
                  Chicago, Illinois  60601
                  Attention: Lawrence R. Samuels, Esq.
                  Facsimile No.:  312-750-8600

or to such other person or address as Quixote shall furnish to Nu-Metrics in 
writing by notice given in the manner set forth above.

      14.5  ASSIGNMENT.  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, but neither this Agreement 
nor any of the rights, interests or obligations hereunder shall be assigned 
by any of the parties hereto without the prior written consent of the other 
parties, except by operation of law and except that Quixote may assign its 
rights and obligations under this Agreement to any other entity wholly owned 
by Quixote. If such assignment shall be made by Quixote, the assignee shall 
be entitled to all of the rights and shall assume all of the obligations of 
Quixote hereunder, PROVIDED, that Quixote shall remain liable for and 
guarantee the performance of such entity's obligations under this Agreement.

      14.6  PUBLICITY.  Neither Nu-Metrics, the Shareholders nor Quixote 
shall make or issue, or cause to be made or issued, any announcement or 
written statement concerning this Agreement or the transactions contemplated 
hereby for dissemination to the general public, without the prior written 
consent of the other parties. This provision shall not apply, however, to any 
announcement or written statement required to be made by law, the regulations 
of any federal or state governmental agency or any stock exchange, except 
that the party required to make such announcement shall, whenever 
practicable, consult with the other party concerning the timing and content 
of such announcement before such announcement is made.

      14.7  HEADINGS.  The Article and Section headings contained in this 
Agreement are inserted for convenience only and shall not affect in any way 
the meaning or interpretation of this Agreement.

      14.8  SEVERABILITY.  If any provision of this Agreement shall be 
determined to be contrary to law and unenforceable by any court of law, the 
remaining provisions shall be severable and enforceable in accordance with 
their terms.

      14.9  GOVERNING LAW.  This Agreement shall be governed by and construed 
in accordance with the laws of the State of Pennsylvania, without regard to 
its conflicts of law doctrine.  The parties hereto expressly submit 
themselves to the non-exclusive jurisdictions of the State and Federal Courts 
of Pennsylvania for the resolution of any disputes which may arise under or 
with respect to compliance with this Agreement.


                                        41

<PAGE>


      14.10 COUNTERPARTS.  This Agreement may be executed simultaneously in 
two or more counterparts, each of which shall be deemed an original, but all 
of which together shall constitute one and the same instrument.

      14.11 THIRD PARTIES.  Nothing herein shall be construed to confer upon 
or give to any party other than the parties hereto and their successors or 
permitted assigns, any rights or remedies under or by reason of this 
Agreement.

      14.12 ARBITRATION.  Any dispute as to any claims under this Agreement 
shall be settled by arbitration in Pittsburgh, Pennsylvania by three 
arbitrators, one of whom shall be appointed by Sampey, one by Quixote and the 
third of whom shall be appointed by the first two arbitrators.  If either 
party fails to appoint an arbitrator within 30 days of a request in writing 
by the other party to do so or if the first two arbitrators cannot agree on 
the appointment of a third arbitrator within 20 days of their designation, 
then such arbitrator shall be appointed by the Chief Judge of the United 
States District Court for the Western District of Pennsylvania.  Except as to 
the selection of arbitrators which shall be as set forth above, the 
arbitration shall be conducted promptly and expeditiously in accordance with 
the commercial arbitration rules of the American Arbitration Association so 
as to enable the arbitrators to render an award within 90 days of the 
commencement of the arbitration proceedings.  Any award issued as a result of 
arbitration shall be final and binding on the parties, and judgment upon the 
award rendered by the arbitrators may be entered in any court having 
jurisdiction thereof; PROVIDED, HOWEVER, that any award issued as a result of 
arbitration shall be reviewable DE NOVO by a court of competent jurisdiction 
for errors of law.  The costs of the arbitration and the arbitrator shall be 
allocated as provided in the results of the arbitration. 

      14.13 REVIEW OF ACCOUNTING MATTERS. If PWC and SLCC cannot agree on any 
matter which requires approval under the provisions of Section 1.6, Article 
II or Section 6.2 hereof, PWC and SLCC shall mutually select a "Big Five" 
accounting firm to review the matters and, the decision of the "Big Five" 
accounting firm shall be binding and conclusive on all parties.  The costs 
and expenses of such "Big Five" accounting firm shall be divided equally 
among Sampey and Quixote.

      14.14 ENTIRE AGREEMENT.  This Agreement, including the Exhibits and 
Schedules hereto, sets forth the entire agreement and understanding of the 
parties hereto in respect of the subject matter contained herein, and 
supersedes all prior agreements, covenants, representations or warranties, 
whether oral or written, by any party hereto.


                                        42

<PAGE>


       IN WITNESS WHEREOF, the parties hereto, have caused this Agreement to 
be duly executed, all as of the day and year first written above.

                                   QUIXOTE CORPORATION, a Delaware corporation


                                   By:     /s/ Leslie Jezuit
                                       _______________________________________
                                          Name:   LESLIE JEZUIT
                                          Title:  President & COO


                                    NU-METRICS, INC., a Pennsylvania corporation

                                    By:    /s/ Harry R. Sampey
                                       _______________________________________
                                          Name:   HARRY R. SAMPEY
                                          Title:  President


                                           /s/ Harry R. Sampey
                                       _______________________________________
                                       HARRY R. SAMPEY, Ph.D


                                           /s/ Brenda J. Auer
                                       _______________________________________
                                       BRENDA J. AUER


                                           /s/ Christine C. Sampey
                                       _______________________________________
                                       CHRISTINE C. SAMPEY


                                           /s/ Kim A. Sampey
                                       _______________________________________
                                       KIM A. SAMPEY


                                           /s/ Vicki L. Sampey
                                       _______________________________________
                                       VICKI L. SAMPEY


                                           /s/ Karen Singo
                                       _______________________________________
                                       KAREN SINGO



<PAGE>

                                             EXHIBIT 2.2

                              FOR:           QUIXOTE CORPORATION

                              CONTACT:       Joan R. Riley 
                                             Daniel P. Gorey
                                             (312) 467-6755
FOR IMMEDIATE RELEASE
                                             Morgen-Walke Associates
                                             June Filingeri, John Blackwell
                                             Media contact: Eileen King
                                             (212) 850-5600


                   QUIXOTE CORPORATION ACQUIRES NU-METRICS, INC.


     CHICAGO, IL, December 11, 1998 -- Quixote Corporation (Nasdaq:QUIX) 
today announced that its wholly owned subsidiary, TranSafe Corporation, has 
acquired Nu-Metrics, Inc., (www.nu-metrics.com), a Uniontown, Pennsylvania 
based developer and manufacturer of traffic sensing and distance measuring 
devices, for approximately $15 million in cash, subject to certain 
adjustments.  Nu-Metrics had revenues of approximately $7 million during the 
twelve-month period ended September 30, 1998.  The acquisition is expected to 
be immediately accretive to earnings.

     Nu-Metrics is a leading manufacturer of electronic measuring devices for 
highway safety and traffic monitoring.  Its products are distributed 
worldwide and include the Hi-Star-Registered Trademark- portable traffic 
counter used to measure traffic flow; the Groundhog-Registered Trademark-, a 
permanent, wireless, in-pavement traffic analyzer which transmits data on 
vehicle class, speed and volume; and the Nitestar-Registered Trademark-, a 
vehicle-installed distance measuring system used by highway departments, 
utilities, and cable and telephone companies.  An advanced version of the 
Groundhog-Registered Trademark-, the RTWIN-TM- (Roadway Traffic and Weather 
Information Networks), measures road surface conditions such as temperature 
and can be used in conjunction with highway anti-icing systems.  Nu-Metrics' 
products are used in a number of applications to monitor traffic patterns not 
only on highways, but also in shopping malls and parking complexes.
     


                                   - MORE -

                                      
<PAGE>

QUIXOTE CORPORATION ACQUIRES NU-METRICS, INC.                 Page 2


     Philip E. Rollhaus, Jr., Quixote's Chairman and Chief Executive Officer, 
commented: "With the acquisition of Nu-Metrics, Quixote furthers its program 
of becoming a larger factor in the developing intelligent transportation 
industry. With Nu-Metrics comes advanced technologies and devices which are 
used to sense, measure and communicate information which can increase traffic 
flow as well as assess road surface conditions during inclement weather.  It 
strengthens our technology platform with innovative products which complement 
our existing lines of products and services.  The addition of Nu-Metrics 
allows us to provide wireless monitoring of road conditions and increases the 
scope of information we can make available to motorists through our highway 
advisory radio systems.  As highway safety and traffic monitoring grow 
increasingly more sophisticated and technologically driven, we will be in an 
ideal position to benefit with the most advanced and complete line of 
products and services in the industry."

     Quixote Corporation, (www.quixotecorp.com), through its wholly-owned 
subsidiaries, Energy Absorption Systems, Inc. and the TranSafe Corporation, 
is the world's leading manufacturer of energy-absorbing highway crash 
cushions, truck-mounted impact attenuators, computerized highway advisory 
radio transmitting systems, electronic wireless sensing devices and other 
highway safety products and services.

     SAFE HARBOR STATEMENT UNDER THE PRIVATE SECURITIES LITIGATION REFORM ACT 
OF 1995: EXCEPT FOR HISTORICAL INFORMATION CONTAINED HEREIN, THE MATTERS SET 
FORTH IN THIS NEWS RELEASE ARE FORWARD-LOOKING STATEMENTS.  THE 
FORWARD-LOOKING STATEMENTS SET FORTH ABOVE INVOLVE A NUMBER OF RISKS AND 
UNCERTAINTIES THAT COULD CAUSE ACTUAL RESULTS TO DIFFER MATERIALLY FROM ANY 
SUCH STATEMENT, INCLUDING THE RISKS AND UNCERTAINTIES DISCUSSED IN THE 
COMPANY'S ANNUAL REPORT ON FORM 10-K FOR ITS FISCAL YEAR ENDED JUNE 30, 1998, 
UNDER THE CAPTION "FORWARD-LOOKING STATEMENTS" IN MANAGEMENT'S DISCUSSION AND 
ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS, WHICH DISCUSSION 
IS INCORPORATED HEREIN BY THIS REFERENCE.
                                          

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<PAGE>

                                        EXHIBIT 2.3

                              FOR:      QUIXOTE CORPORATION

                              CONTACT:  Joan R. Riley
                                        Daniel P. Gorey
                                        (312) 467-6755
FOR IMMEDIATE RELEASE 
- -----------------------                 Morgen-Walke Associates
                                        June Filingeri, John Blackwell
                                        Media contact: Eileen King
                                        (212) 850-5600


           QUIXOTE CORPORATION ANNOUNCES SETTLEMENT OF LAWSUIT
                  ASSOCIATED WITH PREVIOUSLY OWNED BUSINESS 

     CHICAGO, IL, December 15, 1998--Quixote Corporation (Nasdaq:QUIX) 
announced today the settlement of litigation involving its formerly owned 
subsidiary, Disc Manufacturing, Inc. ("DMI"), which it sold in April 1997.  
The litigation, initiated in 1995, includes a lawsuit brought by Discovision 
Associates against DMI for infringement of certain patents related to optical 
disc technology as well as a lawsuit brought by DMI against Discovision 
Associates, Pioneer Electronic Corporation, Pioneer Electronics (USA) Inc. 
and Pioneer Electronics Capital Inc. for violations of the antitrust laws and 
acts of unfair competition.  The settlement involves a payment previously 
accrued in the financial statements and, therefore, there will be no 
additional charge to Quixote's earnings related to this matter.  No other 
terms were disclosed. 

     Philip E. Rollhaus, Jr., Quixote's Chairman and Chief Executive Officer, 
commented: "The settlement of the litigation between our discontinued 
operation, DMI, and Discovision and its affiliates resolves lawsuits which 
have been an ongoing expense and drain on management's time over the past 
several years.  The settlement avoids a potentially protracted trial and 
appellate process.  We choose to concentrate our efforts and time on our 
highway safety businesses and the opportunities they present to continue 
Quixote's profitable growth."

     Quixote Corporation, (www.quixotecorp.com), through its wholly-owned 
subsidiaries, Energy Absorption Systems, Inc. and the TranSafe Corporation, 
is the world's leading manufacturer of energy-absorbing highway crash 
cushions, truck-mounted impact attenuators, computerized highway advisory 
radio transmitting systems, electronic wireless sensing devices and other 
highway safety products and services.

     SAFE HARBOR STATEMENT UNDER THE PRIVATE SECURITIES LITIGATION REFORM ACT 
OF 1995: EXCEPT FOR HISTORICAL INFORMATION CONTAINED HEREIN, THE MATTERS SET 
FORTH IN THIS NEWS RELEASE ARE FORWARD-LOOKING STATEMENTS.  THE 
FORWARD-LOOKING STATEMENTS SET FORTH ABOVE INVOLVE A NUMBER OF RISKS AND 
UNCERTAINTIES THAT COULD CAUSE ACTUAL RESULTS TO DIFFER MATERIALLY FROM ANY 
SUCH STATEMENT, INCLUDING THE RISKS AND UNCERTAINTIES DISCUSSED IN THE 
COMPANY'S ANNUAL REPORT ON FORM 10-K FOR ITS FISCAL YEAR ENDED JUNE 30, 1998, 
UNDER THE CAPTION "FORWARD-LOOKING STATEMENTS" IN MANAGEMENT'S DISCUSSION AND 
ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS, WHICH DISCUSSION 
IS INCORPORATED HEREIN BY THIS REFERENCE.

                                          
                                        # # #




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