THERMO INSTRUMENT SYSTEMS INC
DEF 14A, 1996-04-30
MEASURING & CONTROLLING DEVICES, NEC
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     Thermo Instrument Systems Inc.
     1275 Hammerwood Avenue
     Sunnyvale, California 94089
      
                                             April 19, 1996
      
     Dear Stockholder:
      
          The enclosed Notice calls the 1996 Annual Meeting of the
     Stockholders of Thermo Instrument Systems Inc.  I respectfully request
     all Stockholders attend this Meeting, if possible. 
      
          Our Annual Report for the year ended December 30, 1995 is
     enclosed. I hope you will read it carefully. Feel free to forward any
     questions you may have if you are unable to be present at the Meeting. 
      
          Enclosed with this letter is a Proxy authorizing three officers of
     the Corporation to vote your shares for you if you do not attend the
     Meeting. Whether or not you are able to attend the Meeting, I urge you
     to complete your Proxy and return it to our transfer agent, American
     Stock Transfer and Trust Company, in the enclosed addressed,
     postage-paid envelope, as a quorum of the Stockholders must be present
     at the Meeting, either in person or by proxy. 
      
          I would appreciate your immediate attention to the mailing of this
     Proxy.
      
                                             Yours very truly,
      


                                             ARVIN H. SMITH
                                             President and 
                                             Chief Executive Officer
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<PAGE>








     Thermo Instrument Systems Inc.
     1275 Hammerwood Avenue
     Sunnyvale, California 94089
            
      
                                             April 19, 1996
      
     To the Holders of the Common Stock of
      THERMO  INSTRUMENT  SYSTEMS INC.
      
     NOTICE OF ANNUAL MEETING
      
          The 1996 Annual Meeting of the Stockholders of Thermo Instrument
     Systems Inc. (the "Corporation") will be held on Sunday, May 19, 1996,
     at 6:30 p.m. at the Turnberry Isle Resort & Club, 19999 West Country
     Club Drive, Aventura, Florida.  The purposes of the Meeting are to
     consider and take action upon the following matters: 
      
          1.   Election of five Directors.

          2.   A proposal recommended by the Board of Directors to amend the
     Corporation's Certificate of Incorporation to increase the
     Corporation's authorized common stock, $.10 par value per share, from
     125 million shares to 250 million shares.
      
          3.   Such other business as may properly be brought before the
     Meeting and any adjournment thereof. 
      
          The transfer books of the Corporation will not be closed prior to
     the Meeting, but, pursuant to appropriate action by the Board of
     Directors, the record date for the determination of the Stockholders
     entitled to notice of and vote at the Meeting is April 1, 1996. 
      
          The By-laws require that the holders of a majority of the stock
     issued and outstanding and entitled to vote be present or represented
     by proxy at the Meeting in order to constitute a quorum for the
     transaction of business. It is important that your shares be
     represented at the Meeting regardless of the number of shares you may
     hold. Whether or not you are able to be present in person, please sign
     and return promptly the enclosed Proxy in the accompanying envelope,
     which requires no postage if mailed in the United States.  

          This Notice, the Proxy and Proxy Statement enclosed herewith are
     sent to you by order of the Board of Directors. 
      
                                             SANDRA L. LAMBERT
                                             Secretary

PAGE
<PAGE>





                                 PROXY STATEMENT
      
          The enclosed Proxy is solicited by the Board of Directors of
     Thermo Instrument Systems Inc. (the "Corporation") for use at the 1996
     Annual Meeting of the Stockholders (the "Meeting") to be held on
     Sunday, May 19, 1996, at 6:30 p.m. at the Turnberry Isle Resort & Club,
     19999 West Country Club Drive, Aventura, Florida, and any adjournment
     thereof. The mailing address of the executive office of the Corporation
     is 1275 Hammerwood Avenue, Sunnyvale, California 94089. This Proxy
     Statement and the enclosed Proxy were first furnished to Stockholders
     of the Corporation on or about April 24, 1996. 
      
                                VOTING PROCEDURES
      
          The Board of Directors intends to present to the Meeting the
     election of five Directors, constituting the entire Board of Directors,
     as well as one other matter: a proposal to amend the Corporation's
     Certificate of Incorporation to increase the Corporation's authorized
     common stock, $.10 par value ("Common Stock"), from 125 million shares
     to 250 million shares.
      
          The representation in person or by proxy of a majority of the
     outstanding shares of Common Stock entitled to vote at the Meeting is
     necessary to provide a quorum for the transaction of business at the
     Meeting. Shares can only be voted if the Stockholder is present in
     person or is represented by returning a properly signed Proxy. Each
     Stockholder's vote is very important. Whether or not you plan to attend
     the Meeting in person, please sign and promptly return the enclosed
     proxy card, which requires no postage if mailed in the United States.
     All signed and returned proxies will be counted towards establishing a
     quorum for the Meeting, regardless of how the shares are voted. 
      
          Shares represented by proxy will be voted in accordance with your
     instructions. You may specify your choice by marking the appropriate
     box on the proxy card. If your proxy card is signed and returned
     without specifying choices, your shares will be voted for the
     management nominees for Directors, for the management proposal, and as
     the individuals named as proxy holders on the Proxy deem advisable on
     all other matters as may properly come before the Meeting. 
      
          In order to be elected a Director, a nominee must receive the
     affirmative vote of a majority of the shares of Common Stock present
     and entitled to vote on the election. For the proposal to increase the
     authorized Common Stock, the affirmative vote of a majority of the
     Corporation's outstanding Common Stock entitled to vote on the matter
     is necessary for approval. Withholding authority to vote for a nominee
     for Director or an instruction to abstain from voting on a proposal
     will be treated as shares present and entitled to vote and, for
     purposes of determining the outcome of the vote, will have the same
     effect as a vote against the nominee or a proposal.  With respect to
     the election of Directors, broker "non-votes" will not be treated as
     shares present and entitled to vote on a voting matter and will have no
     effect on the outcome of the vote.  Broker "non-votes" on the proposal
     to increase the authorized Common Stock will have the effect of a vote
PAGE
<PAGE>





     against the proposal.  A broker "non-vote" occurs when a nominee
     holding shares for a beneficial holder does not have discretionary
     voting power and does not receive voting instructions from the
     beneficial owner.
      
          A Stockholder who returns a Proxy may revoke it at any time before
     the Stockholder's shares are voted at the Meeting by written notice to
     the Secretary of the Corporation received prior to the Meeting, by
     executing and returning a later-dated Proxy or by voting by ballot at
     the Meeting. 
      
          The outstanding stock of the Corporation entitled to vote
     (excluding shares held in treasury by the Corporation) as of April 1,
     1996 consisted of 92,796,931 shares of Common Stock, as adjusted to
     reflect the five-for-four stock split effected in the form of a 25%
     stock dividend in December 1995.  Only Stockholders of record at the
     close of business on April 1, 1996 are entitled to vote at the Meeting.
     Each share is entitled to one vote. 
                                         



































                                        2
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<PAGE>





                                 - PROPOSAL 1 -
                                         
                              ELECTION OF DIRECTORS
      
          The Board of Directors has fixed the number of Directors at five,
     and five Directors are to be elected at the Meeting, constituting the
     entire Board of Directors, each to hold office until his successor is
     chosen and qualified or until his earlier resignation, death or
     removal. 
      
     Nominees For Directors
      
          Set forth below are the names of the persons nominated as
     Directors, their ages, their offices in the Corporation, if any, their
     principal occupation or employment for the past five years, the length
     of their tenure as Directors and the names of other public companies in
     which such persons hold directorships. Information regarding their
     beneficial ownership of the Corporation's Common Stock, and the common
     stock of its four majority-owned subsidiaries, Thermo BioAnalysis
     Corporation, Thermo Optek Corporation, ThermoQuest Corporation and
     ThermoSpectra Corporation, and its parent corporation, Thermo Electron
     Corporation ("Thermo Electron"), is reported under the caption "Stock
     Ownership." All of the nominees are currently Directors of the
     Corporation.  Mr. Marshall J. Armstrong, Dr. Elias P. Gyftopoulos, Mr.
     Robert C. Howard, Mr. Frank Jungers and Mr. Robert A. McCabe, all
     current directors of the Corporation, are not standing for reelection.
      
     Frank Borman           Col. Borman, 68, has been a Director of the
                            Corporation since 1986. Col. Borman is
                            president and, since 1988, chief executive
                            officer of Patlex Corporation, a patent
                            licensing company.  Col. Borman is also a
                            director of American Superconductor
                            Corporation, Outboard Marine Group Inc. and
                            The Home Depot, Inc.

     George N. Hatsopoulos  Dr. Hatsopoulos, 69, has been a Director of
                            the Corporation since 1986.  Dr. Hatsopoulos
                            has been the Chairman of the Board, President
                            and Chief Executive Officer of Thermo
                            Electron since 1956.  Dr. Hatsopoulos is also
                            a director of Bolt, Beranek & Newman, Inc.,
                            Thermedics Inc., Thermo Ecotek Corporation,
                            Thermo Electron, Thermo Fibertek Inc.,
                            ThermoQuest Corporation and ThermoTrex
                            Corporation. Dr. Hatsopoulos is the brother
                            of Mr. John N. Hatsopoulos, a Director and
                            Vice President and Chief Financial Officer of
                            the Corporation.





                                        3
PAGE
<PAGE>





     John N. Hatsopoulos    Mr. Hatsopoulos, 61, has been a Director of
                            the Corporation since 1986 and a Vice
                            President and Chief Financial Officer of the
                            Corporation since 1988.  Mr. Hatsopoulos has
                            been the Chief Financial Officer of Thermo
                            Electron Corporation since 1988 and an
                            Executive Vice President of Thermo Electron
                            Corporation since 1986. Mr. Hatsopoulos is
                            also a director of Lehman Brothers Funds,
                            Inc., Thermedics Inc., Thermo Ecotek
                            Corporation, Thermo Fibertek Inc., Thermo
                            Power Corporation, ThermoQuest Corporation,
                            Thermo Sentron Inc., Thermo TerraTech Inc.
                            and ThermoTrex Corporation. Mr. Hatsopoulos
                            is the brother of Dr. George N. Hatsopoulos,
                            Chairman of the Board and a Director of the
                            Corporation.

     Arvin H. Smith         Mr. Smith, 66, has been a Director and
                            President and Chief Executive Officer of the
                            Corporation since 1986.  Mr. Smith has been
                            an executive vice president of Thermo
                            Electron since 1991 and a senior vice
                            president of that company from 1986 to 1991.
                            Mr. Smith is also a director of Thermedics
                            Inc., ThermoQuest Corporation and
                            ThermoSpectra Corporation.

     Polyvios C. Vintiadis  Mr. Vintiadis, 60, has been a Director of the
                            Corporation since July 1993.  Mr. Vintiadis
                            has been the Chairman and Chief Executive
                            Officer of Towermarc Corporation, a real
                            estate development company, since 1984.
                            Prior to joining Towermarc, Mr. Vintiadis was
                            a principal of Morgens, Waterfall &
                            Vintiadis, Inc., a financial services firm,
                            with whom he remains associated. For more
                            than 20 years prior to that time, Mr.
                            Vintiadis was employed by Arthur D. Little &
                            Company, Inc.  Mr. Vintiadis is also a
                            director of Thermo TerraTech Inc.

     Committees of the Board of Directors and Meetings
      
          The Board of Directors has established an Executive Committee, an
     Audit Committee and a Human Resources Committee. The present members of
     the Executive Committee are Dr. G. Hatsopoulos (Chairman) and Col.
     Borman, Mr. Howard, Mr. Smith and Mr. Vintiadis. The Executive
     Committee is empowered to act when it is impractical to call a meeting
     of the entire Board of Directors and with certain exceptions has the
     powers of the Board of Directors. The Audit Committee consists solely
     of outside directors, and its present members are Mr. McCabe
     (Chairman), Mr. Jungers and Mr. Vintiadis. The Audit Committee reviews
     the scope of the audit with the Corporation's independent public

                                        4
PAGE
<PAGE>





     accountants and meets with them for the purpose of reviewing the
     results of the audit subsequent to its completion. The Human Resources
     Committee consists solely of outside directors, and its present members
     are Mr. Jungers (Chairman), Col. Borman and Dr. Gyftopoulos. The Human
     Resources Committee reviews the performance of senior members of
     management, recommends executive compensation and administers the
     Corporation's stock option and other stock-based compensation plans.
     The Corporation does not have a nominating committee of the Board of
     Directors. The Board of Directors met nine times, the Audit Committee
     met twice and the Human Resources Committee met six times during fiscal
     1995. No meetings of the Executive Committee were held during 1995.
     Each Director attended at least 75% of all meetings of the Board of
     Directors and Committees on which he served held during fiscal 1995. 

     Compensation of Directors
      
          Cash Compensation

          Directors who are not employees of the Corporation, of Thermo
     Electron or of any other companies affiliated with Thermo Electron
     (also referred to as "outside directors") receive an annual retainer of
     $8,000 and a fee of $1,000 per day for attending regular meetings of
     the Board of Directors and $500 per day for participating in meetings
     of the Board of Directors held by means of conference telephone and for
     participating in certain meetings of committees of the Board of
     Directors.  Payment of Directors' fees is made quarterly.  Of the
     current Directors, Mr. Armstrong, Dr. G. Hatsopoulos, Mr. J.
     Hatsopoulos, Mr. Howard and Mr. Smith are all employees of Thermo
     Electron companies and do not receive any cash compensation from the
     Corporation for their services as Directors.  Directors are also
     reimbursed for out-of-pocket expenses incurred in attending such
     meetings.
      
          Deferred Compensation Plan

          Under the Deferred Compensation Plan for Directors (the "Deferred
     Compensation Plan"), a Director has the right to defer receipt of his
     cash fees until he ceases to serve as a Director, dies or retires from
     his principal occupation. In the event of a change in control or
     proposed change in control of the Corporation that is not approved by
     the Board of Directors, deferred amounts become payable immediately.
     Either of the following is deemed to be a change of control: (a) the
     occurrence, without the prior approval of the Board of Directors, of
     the acquisition, directly or indirectly, by any person of 50% or more
     of the outstanding Common Stock or the outstanding common stock of
     Thermo Electron; or (b) the failure of the persons serving on the Board
     of Directors immediately prior to any contested election of directors
     or any exchange offer or tender offer for the Common Stock or the
     common stock of Thermo Electron to constitute a majority of the Board
     of Directors at any time within two years following any such event.
     Amounts deferred pursuant to the Deferred Compensation Plan are valued
     at the end of each quarter as units of the Corporation's Common Stock.
     When payable, amounts deferred may be disbursed solely in shares of
     Common Stock accumulated under the Deferred Compensation Plan. A total
                                        5
PAGE
<PAGE>





     of 123,502 shares of Common Stock has been reserved for issuance under
     the Deferred Compensation Plan. As of January 1, 1996, deferred units
     equal to 30,784.52 shares of Common Stock were accumulated under the
     Deferred Compensation Plan. 
      
          Directors Stock Option Plan

          In 1991, the Corporation adopted a directors stock option plan
     (the "Directors Plan"), which was amended in 1995.  The Directors Plan
     provides for the grant of stock options to purchase shares of common
     stock of the Corporation and its majority-owned subsidiaries to outside
     Directors as additional compensation for their service as Directors.
     Under the Directors Plan, outside Directors are automatically granted
     options to purchase 1,000 shares of the Common Stock annually.  In
     addition, the Directors Plan provides for the automatic grant every
     five years of options to purchase 1,500 shares of the common stock of a
     majority-owned subsidiary of the Corporation that is "spun out" to
     outside investors.

          Pursuant to the Directors Plan, outside Directors receive an
     annual grant of options to purchase 1,000 shares of Common Stock at the
     close of business on the date of each Annual Meeting of the
     Stockholders of the Corporation.  Options evidencing annual grants may
     be exercised at any time from and after the six-month anniversary of
     the grant date of the option and prior to the expiration of the option
     on the third anniversary of the grant date.  Shares acquired upon
     exercise of the options are subject to repurchase by the Corporation at
     the exercise price if the recipient ceases to serve as a Director of
     the Corporation or any other Thermo Electron company prior to the first
     anniversary of the grant date.

          In addition, under the Directors Plan, outside Directors are
     automatically granted every five years options to purchase 1,500 shares
     of common stock of each majority-owned subsidiary of the Corporation
     that is "spun out" to outside investors.  The grant occurs on the close
     of business on the date of the first Annual Meeting of the Stockholders
     next following the subsidiary's spinout, which is the first to occur of
     either an initial public offering of the subsidiary's common stock or a
     sale of such stock to third parties in an arms-length transaction, and
     also as of the close of business on the date of every fifth Annual
     Meeting of the Stockholders of the Corporation that occurs thereafter
     during the duration of the Plan.  The options granted vest and become
     exercisable on the fourth anniversary of the date of grant, unless
     prior to such date the subsidiary's common stock is registered under
     Section 12 of the Securities Exchange Act of 1934, as amended
     (''Section 12 Registration").  In the event that the effective date of
     Section 12 Registration occurs before the fourth anniversary of the
     grant date, the option will become immediately exercisable and the
     shares acquired upon exercise will be subject to restrictions on
     transfer and the right of the Corporation to repurchase such shares at
     the exercise price in the event the Director ceases to serve as a
     Director of the Corporation or any other Thermo Electron company.  In
     the event of Section 12 Registration, the restrictions and repurchase
     rights shall lapse or be deemed to lapse at the rate of 25% per year,
                                        6
PAGE
<PAGE>





     starting with the first anniversary of the grant date.  These options
     expire after five years.  Under this provision of the Directors Plan,
     each outside Director was granted options to purchase 1,500 shares of
     common stock of each of Thermo BioAnalysis Corporation, at an exercise
     price of $10 per share, and ThermoSpectra Corporation, at an exercise
     price of $10 per share, on May 22, 1995, the date of last year's Annual
     Meeting of the Stockholders.  In addition, each outside Director
     reelected at this year's Annual Meeting of the Stockholders will be
     granted options to purchase 1,500 shares of common stock of ThermoQuest
     Corporation.

          The exercise price for options granted under the Directors Plan is
     the average of the closing prices of the common stock as reported on
     the American Stock Exchange (or other principal market on which the
     common stock is then traded) for the five trading days preceding and
     including the date of grant, or, if the shares are not then traded, at
     the last price per share paid by third parties in an arms-length
     transaction prior to the option grant.  An aggregate of 140,625 shares
     of Common Stock has been reserved for issuance under the Directors
     Plan.

                                 STOCK OWNERSHIP
      
          The following table sets forth the beneficial ownership of Common
     Stock, as well as the common stock of Thermo Electron and Thermo
     BioAnalysis Corporation ("Thermo BioAnalysis") and ThermoSpectra
     Corporation ("ThermoSpectra"), each a majority-owned subsidiary of the
     Corporation, as of January 1, 1996, with respect to (i) each person who
     was known by the Corporation to own beneficially more than 5% of the
     outstanding shares of Common Stock, (ii) each Director, (iii) each
     executive officer named in the summary compensation table under the
     heading "Executive Compensation" and (iv) all Directors and current
     executive officers as a group.  No Director or executive officer
     beneficially owned any shares of Thermo Optek Corporation ("Thermo
     Optek") or ThermoQuest Corporation ("ThermoQuest"), each a
     majority-owned subsidiary of the Corporation, as of January 1, 1996.
     The shares of Common Stock reported below have been adjusted as
     applicable to reflect a five-for-four stock split effected in December
     1995 in the form of a 25% stock dividend. 








        <TABLE>


        <CAPTION>

                                  Thermo      Thermo      Thermo      Thermo
                                Instrument   Electron  BioAnalysis    Spectra
                 Name             Systems  Corporation Corporation  Corporation
                                 Inc. (2)      (3)         (4)          (5)

        <S>                     <C>        <C>         <C>         <C>
        Thermo Electron 
          Corporation (6)        86,728,929        N/A          N/A         N/A

        Marshall J. Armstrong        16,254    108,204            0       2,500

        Frank Borman                 22,411          0            0       1,500

        Richard W. K. Chapman       142,898     54,321          500       4,000

        Elias P. Gyftopoulos         47,018     46,380            0      20,000

        George N. Hatsopoulos       143,300  2,329,278            0      20,000

        John N. Hatsopoulos         118,913    478,355            0      20,000

        Denis A. Helm               165,270    106,088            0       4,000

        Robert C. Howard             15,620    134,593        2,500      10,000

        Barry S. Howe                99,959     55,297        2,000       4,000

        Frank Jungers                52,374    162,836        4,000       5,500

        Earl R. Lewis               128,578    106,273            0      55,000

        Robert A. McCabe             39,804     30,677            0       1,500

        Arvin H. Smith              431,653    363,578        9,000      20,000

        Polyvios C. Vintiadis         7,391          0            0       1,500

        All Directors and
        current executive
        officers as a group (15   1,456,434  4,091,075       18,000    174,500       
        perons)

</TABLE>



     (1)  Except as reflected in the footnotes to this table, shares of the
          common stock of the Corporation, Thermo Electron, Thermo
          BioAnalysis and ThermoSpectra beneficially owned consist of shares
          owned by the indicated person or by that person for the benefit of
          investmentdpower.nd all share ownership includes sole voting and

     (2)  Shares of the Common Stock beneficially owned by Col. Borman, Dr.
          Chapman, Dr. Gyftopoulos, Dr. G. Hatsopoulos, Mr. J. Hatsopoulos,

                                        7
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<PAGE>





          Mr. Helm, Mr. Howe, Mr. Jungers, Mr. Lewis, Mr. McCabe, Mr. Smith,
          Mr. Vintiadis and all Directors and executive officers as a group
          include 12,590, 121,287, 14,465, 93,750, 93,750, 112,500, 89,062,
          13,809, 112,500, 10,995, 234,375, 5,561 and 929,644 shares,
          respectively, that such person or group has the right to acquire
          within 60 days of January 1, 1996 through the exercise of stock
          options. Shares beneficially owned by Mr. Armstrong, Dr. G.
          Hatsopoulos, Mr. J. Hatsopoulos, Mr. Helm, Mr. Howard, Mr. Howe,
          Mr. Lewis, Mr. Smith and all Directors and executive officers as a
          group include 396, 515, 515, 380, 487, 263, 345, 516 and 3,800
          full shares, respectively, allocated through January 1, 1996 to
          their respective accounts maintained pursuant to Thermo Electron's
          employee stock ownership plan, of which the trustees, who have
          investment power over its assets, were as of January 1, 1996
          executive officers of Thermo Electron (the "ESOP"). Shares
          beneficially owned by Col. Borman, Mr. Jungers, Mr. McCabe, Mr.
          Vintiadis and all Directors and executive officers as a group
          include 9,821, 12,006, 7,126, 1,830 and 30,783 full shares,
          respectively, allocated through January 1, 1996 to their
          respective accounts maintained under the Corporation's Deferred
          Compensation Plan for Directors. Shares beneficially owned by Dr.
          G. Hatsopoulos include 21,368 shares held by Dr. G. Hatsopoulos'
          spouse.  Shares beneficially owned by Mr. Howe include 1,968
          shares held in a trust of which Mr. Howe is the trustee.  Shares
          beneficially owned by Mr. Jungers include 543 shares held by Mr.
          Jungers' spouse.  Shares beneficially owned by Mr. Lewis include
          2,390 shares held by Mr. Lewis' spouse.  No Director or executive
          officer beneficially owned more than 1% of the Common Stock
          outstanding as of January 1, 1996; all Directors and executive
          officers as a group beneficially owned 1.6% of the Common Stock
          outstanding as of such date.  

     (3)  Shares of the common stock of Thermo Electron shown in the table
          reflect a three-for-two split of such stock effected in May 1995
          in the form of a 50% stock dividend. Shares of the common stock of
          Thermo Electron beneficially owned by Mr. Armstrong, Dr. Chapman,
          Dr. Gyftopoulos, Dr. G. Hatsopoulos, Mr. J. Hatsopoulos, Mr. Helm,
          Mr. Howard, Mr. Howe, Mr. Jungers, Mr. Lewis, Mr. McCabe, Mr.
          Smith and all Directors and executive officers as a group include
          71,350, 53,423, 5,250, 1,102,200, 297,880, 74,148, 40,185, 47,860,
          5,250, 103,750, 5,250, 182,775 and 2,054,446 shares, respectively,
          that such person or group has the right to acquire within 60 days
          of January 1, 1996 through the exercise of stock options. Shares
          beneficially owned by Mr. Armstrong, Dr. G. Hatsopoulos, Mr. J.
          Hatsopoulos, Mr. Helm, Mr. Howard, Mr. Howe, Mr. Lewis, Mr. Smith
          and all Directors and executive officers as a group include 1,600,
          1,481, 1,225, 821, 1,963, 463, 617, 1,081 and 10,070 full shares,
          respectively, allocated through January 1, 1996 to their
          respective accounts maintained pursuant to the ESOP.  Shares
          beneficially owned by Mr. Jungers, Mr. McCabe and all Directors
          and executive officers as a group include 53,618, 23,150 and
          76,768 full shares, respectively, allocated through January 1,
          1996 to their respective accounts maintained pursuant to Thermo
          Electron's deferred compensation plan for directors. Shares
                                        8
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<PAGE>





          beneficially owned by Dr. G. Hatsopoulos include 59,734 shares
          held by Dr. Hatsopoulos' spouse, 112,500 shares held by a QTIP
          trust (the "Hatsopoulos QTIP Trust") of which Dr. G. Hatsopoulos'
          spouse is a trustee, 870 shares held by a trust of which Dr. G.
          Hatsopoulos is a trustee and 26,625 shares held by a family trust
          of which Dr. G. Hatsopoulos' spouse is a trustee.  Shares
          beneficially owned by Mr. J. Hatsopoulos include 112,500 shares
          held by the Hatsopoulos QTIP Trust of Mr. J. Hatsopoulos is a
          trustee.  Shares beneficially owned by Mr. Jungers include 61,218
          shares held by a trust for Mr. Jungers and 3,000 shares held by
          Mr. Jungers' spouse.  Except for Dr. G. Hatsopoulos, who
          beneficially owned 2.6% of the Thermo Electron common stock
          outstanding as of January 1, 1996, no Director or executive
          officer beneficially owned more than 1% of such common stock
          outstanding as of such date; all Directors and executive officers
          as a group beneficially owned 4.4% of the Thermo Electron common
          stock outstanding as of January 1, 1996. 
      
     (4)  No Director or executive officer, nor all Directors and executive
          officers as a group, beneficially owned more than 1% of such
          common stock outstanding as of January 1, 1996. 

     (5)  Shares of the common stock of ThermoSpectra beneficially owned by
          Mr. Armstrong, Col. Borman, Dr. Chapman, Dr. Gyftopoulos, Dr. G.
          Hatsopoulos, Mr. J. Hatsopoulos, Mr. Helm, Mr. Howard, Mr. Howe,
          Mr. Jungers, Mr. Lewis, Mr. McCabe, Mr. Smith, Mr. Vintiadis and
          all Directors and executive officers as a group include 2,500,
          1,500, 4,000, 20,000, 20,000, 20,000, 4,000, 10,000, 4,000, 1,500,
          50,000, 1,500, 20,000, 1,500 and 165,500 shares, respectively,
          that such person or group has the right to acquire within 60 days
          of January 1, 1996 through the exercise of stock options.  No
          Director or executive officer beneficially owned more than 1% of
          the common stock of ThermoSpectra outstanding as of January 1,
          1996; all Directors and executive officers as a group beneficially
          owned 1.4% of such common stock outstanding as of such date.

     (6)  Shares of the Common Stock beneficially owned by Thermo Electron
          include 8,269,344 shares which Thermo Electron has the right to
          acquire within 60 days of January 1, 1996 pursuant to the
          conversion of certain convertible notes of the Corporation held by
          Thermo Electron. Thermo Electron beneficially owned 86% of the
          Common Stock outstanding as of January 1, 1996. Thermo Electron's
          address is 81 Wyman Street, Waltham, Massachusetts 02254-9046. 

     Disclosure of Certain Late Filings
      
          Section 16(a) of the Securities Exchange Act of 1934 requires the
     Corporation's Directors and executive officers, and beneficial owners
     of more than 10% of the Common Stock, such as Thermo Electron, to file
     with the Securities and Exchange Commission initial reports of
     ownership and periodic reports of changes in ownership of the
     Corporation's securities. Based upon a review of such filings, all
     Section 16(a) filing requirements applicable to such persons were
     complied with during 1995, except in the following instance.   The Form
                                        9
PAGE
<PAGE>





     4 for February 1995 of Thermo Electron reporting the acquisition of
     540,600 shares of Common Stock was filed one day late on March 11,
     1995.

                             EXECUTIVE COMPENSATION
      
     NOTE: The shares reported below have, in all cases, been adjusted as
     applicable to reflect a three-for-two stock split of the Common Stock
     effected in April 1995, a five-for-four stock split of the Common Stock
     effected in December 1995 and a three-for-two stock split of the common
     stock of Thermo Electron effected in May 1995, each effected in the
     form of a stock dividend. 
      
     Summary Compensation Table
      
          The following table summarizes compensation for services to the
     Corporation in all capacities awarded to, earned by or paid to the
     Corporation's chief executive officer and its four other most highly
     compensated executive officers for the last three fiscal years. 
      
          The Corporation is required to appoint certain executive officers
     and full-time employees of Thermo Electron as executive officers of the
     Corporation, in accordance with the Thermo Electron Corporate Charter.
     The compensation for these executive officers is determined and paid
     entirely by Thermo Electron. The time and effort devoted by these
     individuals to the Corporation's affairs is provided to the Corporation
     under the Corporate Services Agreement between the Corporation and
     Thermo Electron. Accordingly, the compensation for these individuals is
     not reported in the following table. 








     <TABLE>


                                        Summary Compensation Table

     <CAPTION>

                                        Annual        Long Term
                                    Compensation (1) Compensation

                                                      Securities         All Other
     Name and Principal                                Underlying      Compensation
     Position                                      Options (No. of
                             Fiscal                   Shares and
                             Year  Salary  Bonus       Company)
     <S>                     <C>   <C>     <C>     <C>       <C>       <C>
                              1995 $262,000 $256,200     --            $6,750
     Arvin H. Smith (3)       
       President and          1994 $255,000 $280,500  20,000 (THS)     $6,750

       Chief Executive Officer1993 $240,000 $304,000  234,375 (THI)   $10,023

     Earl R. Lewis (4)        1995 $145,000  $90,000      100 (TMO)    $6,750

       Executive Vice                                   7,500 (TLZ)

       President and                                    5,000 (TBAN)

       Chief Operating       1994 $140,000 $100,000    45,000 (TMO)     $6,750

       Officer                                         50,000 (THS)

                             1993 $131,250 $100,000   112,500 (THI)     $6,671

                                                       29,625 (TMO)

     Denis A. Helm           1995 $142,000  $81,000     2,900 (TMO)     $6,750

        Senior Vice          1994 $140,000  $90,000   33,300 (TMO)      $6,750

        President                                      4,000 (THS)

                             1993 $127,500 $120,000 112,500 (THI)       $9,217

                                                     20,962 (TMO)


     Richard W.K. Chapman (5) 1995 $159,500  $95,000    100 (TMO)       $6,749

       Vice President
                              
                              1994     $155,000  100,000 28,125 (THI)   $7,750

                                                         30,075 (TMO)

                                                          4,000 (THS)


     Barry S. Howe (5)        1995     $134,000  $65,000  1,100 (TMO)   $7,517

         Vice President                                   5,000 (TLZ)

                              1994     $130,000  $45,000 15,750 (TMO)   $3,750

                                                          4,000 (THS)



</TABLE>



     (1)  In addition to grants of options to purchase Common Stock of the
          Corporation (designated in the table as THI), executive officers
          of the Corporation have been granted options to purchase common
          stock of Thermo Electron and certain of its other subsidiaries as
          part of Thermo Electron's stock option program.  Options have been
          granted during the last three fiscal years to the chief executive
          officer and the other named executive officers in the following
          Thermo Electron companies: Thermo Electron Corporation (designated
          in the table as "TMO"), ThermoLase Corporation (designated in the
          table as "TLZ"), Thermo BioAnalysis (designated in the table as
          "TBAN") and ThermoSpectra (designated in the table as "THS"). 
      
     (2)  Represents the amount of matching contributions made on behalf of
          the executive officers participating in the Thermo Electron 401(k)
          plan or, in the case of Dr. Chapman, the 401(k) plan maintained by
          Finnigan Corporation, a subsidiary of the Corporation. 
      
     (3)  Mr. Smith is an executive vice president of Thermo Electron, as
          well as the president and chief executive officer of the
                                       10
PAGE
<PAGE>





          Corporation. Reported in the table under "Annual Compensation" and
          "All Other Compensation" are total amounts paid to Mr. Smith for
          his service in all capacities to Thermo Electron companies. The
          Human Resources Committee of the Board of Directors of the
          Corporation reviews total annual compensation to be paid to Mr.
          Smith from all sources within the Thermo Electron organization and
          approves the allocation of a percentage of annual compensation
          (salary and bonus) for the time he devotes to the affairs of the
          Corporation. For 1995, 1994 and 1993, 50%, 40% and 50%,
          respectively, of Mr. Smith's annual compensation was allocated to
          the Corporation.  In addition, Mr. Smith has been granted options
          to purchase common stock of Thermo Electron and certain of its
          subsidiaries other than the Corporation and its subsidiaries,
          Thermo BioAnalysis, Thermo Optek, ThermoQuest and ThermoSpectra,
          from time to time by Thermo Electron or such other subsidiaries.
          These options are not reported here as they were granted as
          compensation for service to other Thermo Electron companies in
          capacities other than his capacity as the chief executive officer
          of the Corporation.
      
     (4)  Mr. Lewis was promoted to executive vice president and chief
          operating officer effective January 1, 1996.  Prior to that date,
          he served as a senior vice president of the Corporation.

     (5)  Mr. Chapman and Mr. Howe were first named executive officers of
     the Corporation in January 1994. 

     Stock Options Granted During Fiscal 1995

          The following table sets forth information concerning individual
     grants of stock options made during fiscal 1995 to the Corporation's
     chief executive officer and the other named executive officers.  It has
     not been the Corporation's policy in the past to grant stock
     appreciation rights, and no such rights were granted during fiscal
     1995.  
          Mr. Smith has served as an executive officer of Thermo Electron
     since 1986 and has been granted options to purchase common stock of
     Thermo Electron and certain of its subsidiaries other than the
     Corporation. These options are not reported in the table as they were
     granted as compensation for service to other Thermo Electron companies
     in capacities other than his capacity as chief executive officer of the
     Corporation. No options were granted to Mr. Smith by the Corporation
     and its majority-owned subsidiaries in fiscal 1995.








   <TABLE>

   OPTION GRANTS In FISCAL 1995

   <CAPTION>

                                    Percent
                                    of Total                       Potential
                                    Options                    Realizable Value
                        Number of   Granted                       at Assumed
                        Securities     to    Exercise           Annual Rates of
                        Underlying  Employees Price  Expiration   Stock Price
          Name           Options    in Fiscal  Per      Date   Appreciation for
                       Granted (1)    Year    Share               Option Term
                                                                  5%     10%

           <S>          <C>    <C>    <C>      <C>      <C>      <C>     <C>
   Earl R. Lewis          100 (TMO)    0.01%  $37.27   5/23/98    $587    $1,234

                        7,500 (TBAN    0.5%   $22.75  11/28/07  $90,550 $243,250

                        5,000 (TLZ)    9.6%   $10.00   9/21/07  $59,700 $160,350


   Denis A. Helm        2,900 (TMO)    0.3%   $37.27   5/23/98  $17,023  $35,786


   Richard W.K. Chapman   100 (TMO)   0.01%   $37.27   5/23/98    $587   $1,234

                        5,000 (TLZ)    0.5%   $22.75  11/28/07  $90,550 $243,250


   Barry S. Howe        1,100 (TMO)    0.1%   $37.27   5/23/98   $6,457  $13,574

                        5,000 (TLZ)    0.5%   $22.75  11/28/07  $90,550 $243,250



</TABLE>



     (1)  All of the options granted during the fiscal year are immediately
          exercisable at the date of grant, except options to purchase the
          common stock of Thermo BioAnalysis (designated in the table as
          "TBAN"), which are not exercisable until that company's stock is
          publicly traded.  However, the shares acquired upon exercise are
                                       11
PAGE
<PAGE>





          subject to repurchase by the granting corporation at the exercise
          price if the optionee ceases to be employed by such corporation or
          any other Thermo Electron company. The granting corporation may
          exercise its repurchase rights within six months after the
          termination of the optionee's employment.  For publicly traded
          companies, the repurchase rights generally lapse ratably over a
          ten-year period with a twelve-year option term, provided that the
          optionee continues to be employed by the Corporation or another
          Thermo Electron company.  Certain options granted as a part of
          Thermo Electron's stock option program have three-year terms, and
          the repurchase rights lapse in their entirety on the second
          anniversary of the grant date.  For companies whose shares are not
          publicly traded, the repurchase rights lapse in their entirety on
          the 
          ninth anniversary of the grant date.  The granting corporation may
          permit the holders of options to exercise options and to satisfy
          tax withholding obligations by surrendering shares equal in fair
          market value to the exercise price or withholding obligation. 
      
     (2)  These options were granted under stock option plans maintained by
          Thermo Electron or its subsidiaries other than the Corporation and
          accordingly are reported as a percentage of total options granted
          to employees of Thermo Electron and its subsidiaries. 


     Stock Options Exercised During Fiscal 1995
      
          The following table reports certain information regarding stock
     option exercises during fiscal 1995 and outstanding stock options held
     at the end of fiscal 1995 by the Corporation's chief executive officer
     and the other named executive officers. No stock appreciation rights
     were exercised or were outstanding during fiscal 1995. 
      









     <TABLE>

     Aggregated Option Exercises In Fiscal 1995 And Fiscal 1995 Year-End Option Values


     <CAPTION>


                                                                 No. of Unexercised
                                               Shares            Options at Fiscal
                                               Acquired  Value       Year-end
               Name               Company        on     Realized   (Exercisable/
                                               Exercise          Unexercisable) (1)

     <S>                     <C>              <C>      <C>      <C>          <C>
     Arvin H. Smith (2)      Thermo Instrument   --        --       234,375/0

                             Thermo Spectra      --        --        20,000/0

     Earl R. Lewis           Thermo Instrument   --        --       112,500/0

                             Thermo              --        --         0/7,500

                             BioAnalysis

                             Thermo Ecotek        4,000  $30,500      --

                             Thermo Electron     15,300  $242,121   103,750/0(4)

                             Thermo Fibertek        900   $6,150      1,800/0

                             ThermoLase          --        --         5,000/0

                             ThermoSpectra       --        --        50,000/0

                             ThermoTrex             420   $4,589        420/0

     Denis A. Helm           Thermo Instrument   --        --       112,500/0

                             Thermo Ecotek       --        --         4,000/0

                             Thermo Electron      4,275  $85,008     74,148/0(4)

                             Thermo Fibertek     --        --         4,500/0

                             ThermoSpectra       --        --         4,000/0
PAGE
<PAGE>





                             ThermoTrex          --        --         2,100/0

     Richard W.K. Chapman    Thermo Instrument   33,464  $515,973   121,287/0

                             Thermo Electron     --        --        53,423/0(4)

                             Thermo Fibertek     --        --         4,500/0

                             ThermoLase          --        --         5,000/0

                             ThermoSpectra       --        --         4,000/0

                             ThermoTrex          --        --           270/0

     Barry S. Howe           Thermo Instrument   --        --        86,062/0

                             Thermedics          --        --         4,000/0

                             Thermo Ecotek       --        --         7,500/0

                             Thermo Electron      4,254  $101,118    47,860/0(4)

                             Thermo Fibertek     --        --        10,500/0

                             Thermo Power        --        --         4,000/0

                             Thermo TerraTech    --        --         4,000/0

                             ThermoLase          --        --         5,000/0

                             ThermoSpectra       --        --         4,000/0

                             ThermoTrex          --        --         5,350/0


<PAGE>

       Value of Unexercised
       In-the-Money Options

               <C>                     
                $2,418,750/--

                  $112,500/--

                $1,161,000/--

                        --/--(3)

                        --/--

                $2,722,495/--

                   $32,400/--

                   $15,625/--

                  $281,250/--

                   $19,131/--

                $1,161,000/--

                   $43,000/--

                $1,928,327/--

                   $81,000/--

                   $22,500/--

                   $95,655/--

                $1,383,951/--

                $1,309,505/--

                   $81,000/--

                   $15,625/--

                   $22,500/--

                   $12,299/--

                $1,037,803/--

                   $44,600/--

                   $71,625/--

                $1,206,925/--

                  $159,420/--

                   $15,100/--

                   $10,380/--

                   $15,625/--

                   $22,500/--

                  $198,693/--

















































</TABLE>


     (1)  All of the options reported outstanding at the end of the fiscal
          year were immediately exercisable as of fiscal year-end, except
          options to purchase the common stock of Thermo BioAnalysis, which
          are not exercisable until that company's stock is publicly traded.
          The shares acquired upon exercise of the options reported in the
          table are subject to repurchase by the granting corporation at the
          exercise price if the optionee ceases to be employed by such
          corporation or any other Thermo Electron company. The granting
          corporation may exercise its repurchase rights within six months
          after the termination of the optionee's employment. For publicly
          traded companies, the repurchase rights generally lapse ratably
          over a five- to ten-year period, depending on the option term,
          which may vary from seven to twelve years, provided that the
          optionee continues to be employed by the Corporation or another
          Thermo Electron company.  Certain options granted as a part of
          Thermo Electron's stock option program have three-year terms, and
          the repurchase rights lapse in their entirety on the second
                                       12
PAGE
<PAGE>





          anniversary of the grant date.  For companies whose shares are not
          publicly traded, the repurchase rights lapse in their entirety on
          the ninth anniversary of the grant date.  The granting corporation
          may permit the holders of options to exercise options and to
          satisfy tax withholding obligations by surrendering shares equal
          in fair market value to the exercise price or withholding
          obligation.

     (2)  As an executive officer of Thermo Electron, Mr. Smith also holds
          unexercised options to purchase common stock of Thermo Electron
          and certain of its subsidiaries other than the Corporation and its
          majority-owned subsidiaries. These options are not reported here
          as they were granted as compensation for service to other Thermo
          Electron companies in capacities other than his capacity as the
          chief executive officer of the Corporation. 

     (3)  No public market existed for the shares underlying these options
          as of December 31, 1995. Accordingly, no value in excess of
          exercise price has been attributed to these options. 

     (4)  Options to purchase 45,000, 30,000, 30,000 and 15,000 shares of
          the common stock of Thermo Electron granted to Mr. Lewis, Mr.
          Helm, Dr. Chapman and Mr. Howe, respectively, are subject to the
          same terms as described in footnote (1), except that the
          repurchase rights of the granting corporation generally do not
          lapse until the tenth anniversary of the grant date. In the event
          of the employee's death or involuntary termination prior to the
          tenth anniversary of the grant date, the repurchase rights of the
          granting corporation shall be deemed to have lapsed ratably over a
          five-year period commencing with the fifth anniversary of the
          grant date. 

     Severance Agreements
      
          Thermo Electron has entered into severance agreements with several
     of its key employees, including key employees of the Corporation and
     other majority-owned subsidiaries. These agreements provide severance
     benefits if there is a change of control of Thermo Electron that is not
     approved by the Board of Directors of Thermo Electron and the
     employee's employment with Thermo Electron or the majority-owned
     subsidiary is terminated, for whatever reason, within one year
     thereafter. For purposes of the agreements, a change of control exists
     upon (i) the acquisition of 50% or more of the outstanding common stock
     of Thermo Electron by any person without the prior approval of the
     board of directors of Thermo Electron, (ii) the failure of the board of
     directors of Thermo Electron, within two years after any contested
     election of directors or tender or exchange offer not approved by the
     board of directors, to be constituted of a majority of directors
     holding office prior to such event or (iii) any other event that the
     board of directors of Thermo Electron determines constitutes an
     effective change of control of Thermo Electron. 
      
          In 1983, Thermo Electron entered into a severance agreement with
     Mr. Smith, which states the benefits to be received as an initial
                                       13
PAGE
<PAGE>





     percentage which was established by the Board of Directors of Thermo
     Electron and was generally based upon Mr. Smith's age and length of
     service with Thermo Electron at the time of severance. Benefits under
     this agreement are to be paid over a five-year period. The benefit to
     be paid in the first year is determined by applying this percentage to
     Mr. Smith's highest annual total remuneration in any twelve-month
     period during the preceding three years. The benefit is reduced 10% in
     each of the succeeding four years in which benefits are paid. The
     initial percentage to be applied to Mr. Smith is 59.1%. 
      
          In 1988, Thermo Electron entered into severance agreements with
     several other key employees, including Mr. Helm. Each of the recipients
     of these agreements would receive a lump-sum benefit at the time of a
     qualifying severance equal to the highest total cash compensation paid
     to the employee by Thermo Electron or the majority-owned subsidiary in
     any 12-month period during the three years preceding the severance
     event. A qualifying severance exists if (i) the employment of the
     executive officer is terminated for any reason within one year after a
     change in control of Thermo Electron or (ii) a group of directors of
     Thermo Electron consisting of directors of Thermo Electron on the date
     of the severance agreement or, if an election contest or tender or
     exchange offer for Thermo Electron's common stock has occurred, the
     directors of Thermo Electron immediately prior to such election contest
     or tender or exchange offer, and any future directors who are nominated
     or elected by such directors, determines that any other termination of
     the executive officer's employment should be treated as a qualifying
     severance. The benefits to be provided are limited so that the payments
     would not constitute so-called "excess parachute payments" under
     applicable provisions of the Internal Revenue Code of 1986. 
      

          Assuming that severance benefits would have been payable under
     these agreements as of December 31, 1995, Mr. Smith and Mr. Helm would
     have received approximately $316,000 (with respect to the first year in
     which benefits would be paid) and $230,000, respectively. 
      
                   COMMITTEE REPORT ON EXECUTIVE COMPENSATION
      
     Executive Compensation
      
          All decisions on compensation for the Corporation's executive
     officers are made by the Human Resources Committee of the Board of
     Directors (the "Committee"). In reviewing and establishing total cash
     compensation and stock-based compensation for executives, the Committee
     follows guidelines established by the Human Resources Committee of the
     Board of Directors of its parent corporation, Thermo Electron. The
     executive compensation program presently consists of annual base salary
     ("salary"), short-term incentives in the form of annual cash bonuses,
     and long-term incentives in the form of stock options. 
      
          The Committee believes that the compensation of executive officers
     should reflect the scope of their responsibilities, the success of the
     Corporation, and the contributions of each executive to that success.
     In addition, the Committee believes that base salaries should
                                       14
PAGE
<PAGE>





     approximate the mid-point of competitive salaries derived from market
     surveys and that short-term and long-term incentive compensation should
     reflect the performance of the Corporation and the contributions of
     each executive. 
      
          External competitiveness is an important element of the
     Committee's compensation policy. The competitiveness of the
     Corporation's compensation for its executives is assessed by comparing
     it to market data provided by its compensation consultant and by
     participating in annual executive compensation surveys, primarily
     "Project 777", an executive compensation survey prepared by Management
     Compensation Services, a division of Hewitt Associates. The majority of
     firms represented in the Project 777 survey are included in the
     Standard & Poor's Index, but do not necessarily correspond to the
     companies included in the Corporation's peer group. 
      
          Principles of internal equity are also central to the Committee's
     compensation policies. Compensation considered for the Corporation's
     officers, whether cash or stock-based incentives, is also evaluated by
     comparing it to compensation of other executives within the Thermo
     Electron organization with comparable levels of responsibility for
     comparably sized business units. 
      
          The process for determining each of these elements for the
     Corporation's officers is outlined below. 
      
          Base Salary
      
          Base salaries are intended to approximate the mid-point of
     competitive salaries for similar organizations of comparable size and
     complexity to the Corporation. Executive salaries are adjusted
     gradually over time and only as necessary to meet this objective.
     Increases in base salary may be moderated by other considerations, such
     as geographic or regional market data, industry trends or internal
     fairness within the Corporation and Thermo Electron. It is the
     Committee's intention that over time the base salaries for the chief
     executive officer and the other named executive officers will approach
     the mid-point of competitive data. The salary increases in calendar
     1995 for the chief executive officer and the other named executive
     officers generally reflect this practice of gradual increases and
     moderation. 
      
          Cash Bonus
      
          The Committee establishes a median potential bonus for each
     executive by using the market data on total cash compensation from the
     same executive compensation surveys as used to determine salaries.
     Specifically, the median potential bonus plus the salary of an
     executive officer is approximately equal to the mid-point of
     competitive total cash compensation for a similar position and level of
     responsibility in businesses having comparable sales and complexity to
     the Corporation. The actual bonus awarded to an executive officer may
     range from zero to three times the median potential bonus. The value
     within the range (the bonus multiplier) is determined at the end of
                                       15
PAGE
<PAGE>





     each year by the Committee in its discretion. The Committee exercises
     its discretion by evaluating each executive's performance using a
     methodology developed by its parent corporation, Thermo Electron, and
     applied throughout the Thermo Electron organization. The methodology
     incorporates measures of operating returns, designed to measure
     profitability, contributions to shareholder value, and earnings growth,
     and are measures of corporate and divisional performance that are
     evaluated using graphs developed by Thermo Electron designed to reward
     performance that is perceived as above average and to penalize
     performance that is perceived as below average. The measures of
     operating returns used in the Committee's determinations in calendar
     1995 measured return on net assets, growth in income, cash flow and
     growth in earnings per share, and the Committee's determinations also
     included an evaluation of the contributions of each executive that are
     not captured by operating measures but are considered important to the
     creation of long-term value for the Stockholders. These measures of
     achievements are not financial targets that are met, not met or
     exceeded. The relative weighting of these achievements varies depending
     on the executive's role and responsibilities within the organization. 
      
          The bonuses for named executive officers approved by the Committee
     with respect to fiscal 1995 performance in each instance exceeded the
     median potential bonus.

          Stock Option Program
      
          The primary goal of the Corporation is to excel in the creation of
     long-term value for the Stockholders. The principal incentive tool used
     to achieve this goal is the periodic award to key employees of options
     to purchase common stock of the Corporation and other Thermo Electron
     companies. 
      
          The Committee and management believe that awards of stock options
     to purchase the shares of both the Corporation and other companies
     within the Thermo Electron group of companies accomplish many
     objectives. The grant of options to key employees encourages equity
     ownership in the Corporation, and closely aligns management's interests
     to the interests of all the Stockholders. The emphasis on stock options
     also results in management's compensation being closely linked to stock
     performance. In addition, because they are subject to vesting periods
     of varying durations and to forfeiture if the employee leaves the
     Corporation prematurely, stock options are an incentive for key
     employees to remain with the Corporation long-term. The Committee
     believes stock option awards in the parent corporation, Thermo
     Electron, and the other majority-owned subsidiaries of Thermo Electron,
     are an important tool in providing incentives for performance within
     the entire organization. 
      
          In determining awards, the Committee considers the average annual
     value of all options to purchase shares of the Corporation and other
     companies within the Thermo Electron organization that vest in the next
     five years. (Values are established using a modified Black-Scholes
     option pricing model.) As a guideline, the Committee strives to
     maintain the aggregate amount of awards to purchase shares of Common
                                       16
PAGE
<PAGE>





     Stock to all employees over a five-year period below 10% of the
     Corporation's outstanding Common Stock, although other factors such as
     unusual transactions and acquisitions and standards for awards of
     comparably situated companies may affect the number of awards granted. 
      
          Awards are not made annually in conjunction with the annual review
     of cash compensation, but are made periodically. The Committee
     considers total compensation of executives, actual and anticipated
     contributions of each executive (which includes a subjective assessment
     by the Committee of the value of the executive's future potential
     within the organization), as well as the value of previously awarded
     options as described above in determining option awards. The option
     awards made with respect to the common stock of the Corporation's
     parent, Thermo Electron and certain majority-owned subsidiaries of
     Thermo Electron, were determined by the human resources committee of
     the applicable board of directors using a similar analysis. 
      
     Policy on Deductibility of Compensation
      
          The Committee has also considered the application of Section
     162(m) of the Internal Revenue Code to the Corporation's compensation
     practices. Section 162(m) limits the tax deduction available to public
     companies for annual compensation paid to senior executives in excess
     of $1 million unless the compensation qualifies as "performance based"
     or is otherwise exempt under Section 162(m). The annual compensation
     paid to individual executives does not approach the $1 million
     threshold, and it is believed that the stock incentive plans of the
     Corporation qualify as "performance based". Therefore, the Committee
     does not believe any further action is necessary in order to comply
     with Section 162(m). From time to time, the Committee will reexamine
     the Corporation's compensation practices and the effect of Section
     162(m). 

     1995 CEO Compensation
      
          Cash compensation for Mr. Arvin H. Smith is reviewed by both the
     Committee and the human resources committee of the board of directors
     of Thermo Electron, due to his responsibilities as both the
     Corporation's chief executive officer and as an executive vice
     president of Thermo Electron, the Corporation's parent. Each committee
     evaluates Mr. Smith's performance and proposed compensation using a
     process similar to that used for the other executive officers of the
     Corporation. At the Thermo Electron level, Mr. Smith is evaluated on
     his performance related to the Corporation as well as other operating
     units of Thermo Electron for which he is responsible, weighted in
     accordance with the amount of time and effort devoted to each
     operation. Approximately 50% of Mr. Smith's bonus for 1995 performance
     was attributable to his responsibilities at the Corporation. The
     Corporation's Committee then reviews the analysis and determinations of
     the Thermo Electron committee, makes an independent assessment of Mr.
     Smith's performance as it relates to the Corporation using criteria
     similar to that used for the other executive officers of the
     Corporation, and then agrees to an appropriate allocation of Mr.
     Smith's compensation to be paid by the Corporation.  
                                       17
PAGE
<PAGE>






          In March 1996, the Committee conducted its review of Mr. Smith's
     proposed salary for 1996 and bonus for 1995 performance. In addition to
     the evaluation of Mr. Smith's performance as described above, the
     Committee also considered the rate of return to Stockholders since the
     Corporation's initial public offering in August 1986.  The Corporation
     achieved a compound annual return to Stockholders of 33% per year since
     its initial public offering.  In its deliberations, the Committee
     considered  Mr. Smith's leadership and contributions in achieving this
     rate of return and in implementing a spinout strategy for the
     Corporation and the formation of four majority-owned subsidiaries. The
     Committee concurred in the bonus recommendation made by the Thermo
     Electron committee and agreed to an allocation of 50% of Mr. Smith's
     total cash compensation for 1995 to the Corporation, based on his
     relative responsibilities at the Corporation and Thermo Electron. The
     Committee believes that the total cash compensation for Mr. Smith for
     1995 tends to be below the competitive norm for a similarly sized
     company with performance comparable to that of the Corporation, and
     prefers that a significant portion of total compensation be awarded in
     the form of long-term incentive compensation, such as stock options. 
      
      
                          Mr. Frank Jungers (Chairman)
                                 Mr. Frank Borman
                             Dr. Elias P. Gyftopoulos





























                                       18
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<PAGE>





                          COMPARATIVE PERFORMANCE GRAPH
      
          The Securities and Exchange Commission requires that the
     Corporation include in this Proxy Statement a line-graph presentation
     comparing cumulative, five-year shareholder returns for the
     Corporation's Common Stock with a broad-based market index and either a
     nationally recognized industry standard or an index of peer companies
     selected by the Corporation. The Corporation has compared its
     performance with the American Stock Exchange Market Value Index and a
     peer group of instrument companies comprised of Beckman Instruments
     Inc., Dionex Inc., Emerson Electric Corp., Measurex Corp., Perkin-Elmer
     Corp. and Varian Associates Inc. (the "Peer Group"). 
      
                   Comparison of 1990-1995 Total Return Among 
                         Thermo Instrument Systems Inc.,
            the American Stock Exchange Market Value Index, and the 
                            Corporation's Peer Group.






     GRAPH APPEARS HERE











              12/31/90 12/31/91 12/31/9212/31/93  12/30/94 12/29/95

     THI      100      162      235     355      323       515
     AMEX     100      128      130     155      141       178
     Peer     100      146      156     176      183       248
     Group


          The total return for the Corporation's Common Stock (THI), the
     American Stock Exchange Market Value Index (AMEX), and the Peer Group
     assumes the reinvestment of dividends, although dividends have not been
     declared on the Corporation's Common Stock. The American Stock Exchange
     Market Value Index tracks the aggregate performance of equity
     securities of companies listed on the American Stock Exchange. The
     Corporation's Common Stock is traded on the American Stock Exchange
     under the ticker symbol "THI." 
      


                                       19
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<PAGE>





                          RELATIONSHIP WITH AFFILIATES

          Thermo Electron has adopted a strategy of selling a minority
     interest in subsidiary companies to outside investors as an important
     tool in its future development. As part of this strategy, Thermo
     Electron and certain of its subsidiaries have created several privately
     and publicly held subsidiaries.  From time to time, Thermo Electron and
     its subsidiaries will create other majority-owned subsidiaries as part
     of its spinout strategy. (The Corporation and such other majority-owned
     Thermo Electron subsidiaries are hereinafter referred to as the "Thermo
     Subsidiaries.") 
      
          Thermo Electron and each of the Thermo Subsidiaries recognize that
     the benefits and support that derive from their affiliation are
     essential elements of their individual performance. Accordingly, Thermo
     Electron and each of the Thermo Subsidiaries have adopted the Thermo
     Electron Corporate Charter (the "Charter") to define the relationships
     and delineate the nature of such cooperation among themselves. The
     purpose of the Charter is to ensure that (1) all of the companies and
     their stockholders are treated consistently and fairly, (2) the scope
     and nature of the cooperation among the companies, and each company's
     responsibilities, are adequately defined, (3) each company has access
     to the combined resources and financial, managerial and technological
     strengths of the others, and (4) Thermo Electron and the Thermo
     Subsidiaries, in the aggregate, are able to obtain the most favorable
     terms from outside parties. 
      
          To achieve these ends, the Charter identifies the general
     principles to be followed by the companies, addresses the role and
     responsibilities of the management of each company, provides for the
     sharing of group resources by the companies and provides for
     centralized administrative, banking and credit services to be performed
     by Thermo Electron. The services provided by Thermo Electron include
     collecting and managing cash generated by members, coordinating the
     access of Thermo Electron and the Thermo Subsidiaries (the "Thermo
     Group") to external financing sources, ensuring compliance with
     external financial covenants and internal financial policies, assisting
     in the formulation of long-range financial planning and providing other
     banking and credit services. Pursuant to the Charter, Thermo Electron
     may also provide guarantees of debt or other obligations of the Thermo
     Subsidiaries or may obtain external financing at the parent level for
     the benefit of the Thermo Subsidiaries. In certain instances, the
     Thermo Subsidiaries may provide credit support to, or on behalf of, the
     consolidated entity or may obtain financing directly from external
     financing sources. Under the Charter, Thermo Electron is responsible
     for determining that the Thermo Group remains in compliance with all
     covenants imposed by external financing sources, including covenants
     related to borrowings of Thermo Electron or other members of the Thermo
     Group, and for apportioning such constraints within the Thermo Group.
     In addition, Thermo Electron establishes certain internal policies and
     procedures applicable to members of the Thermo Group. The cost of the
     services provided by Thermo Electron to the Thermo Subsidiaries is
     covered under existing corporate services agreements between Thermo
     Electron and each of the Thermo Subsidiaries. 
                                       20
PAGE
<PAGE>





      
          The Charter presently provides that it shall continue in effect so
     long as Thermo Electron and at least one Thermo Subsidiary participate.
     The Charter may be amended at any time by agreement of the
     participants. Any Thermo Subsidiary, including the Corporation, can
     withdraw from participation in the Charter upon 30 days' prior notice.
     In addition, Thermo Electron may terminate a subsidiary's participation
     in the Charter in the event the subsidiary ceases to be controlled by
     Thermo Electron or ceases to comply with the Charter or the policies
     and procedures applicable to the Thermo Group.  A withdrawal from the
     Charter automatically terminates the corporate services agreement and
     tax allocation agreement (if any) in effect between the withdrawing
     company and Thermo Electron. The withdrawal from participation does not
     terminate outstanding commitments to third parties made by the
     withdrawing company, or by Thermo Electron or other members of the
     Thermo Group, prior to the withdrawal. However, a withdrawing company
     is required to continue to comply with all policies and procedures
     applicable to the Thermo Group and to provide certain administrative
     functions mandated by Thermo Electron so long as the withdrawing
     company is controlled by or affiliated with Thermo Electron. 
      
          As provided in the Charter, the Corporation and Thermo Electron
     have entered into a Corporate Services Agreement (the "Services
     Agreement") under which Thermo Electron's corporate staff provides
     certain administrative services, including certain legal advice and
     services, risk management, employee benefit administration, tax advice
     and preparation of tax returns, centralized cash management and
     financial and other services to the Corporation. The Corporation was
     assessed an annual fee equal to 1.2% of the Corporation's revenues for
     these services for calendar 1995.  Beginning January 1, 1996, the fee
     has been reduced to 1.0% of the Corporation's revenues. The fee is
     reviewed annually and may be changed by mutual agreement of the
     Corporation and Thermo Electron.  During fiscal 1995, Thermo Electron
     assessed the Corporation $9,392,000 in fees under the Services
     Agreement. Management believes that the charges under the Services
     Agreement are reasonable and that the terms of the Services Agreement
     are fair to the Corporation.  For items such as employee benefit plans,
     insurance coverage and other identifiable costs, Thermo Electron
     charges the Corporation based on charges attributable to the
     Corporation. The Services Agreement automatically renews for successive
     one-year terms, unless canceled by the Corporation upon 30 days' prior
     notice. In addition, the Services Agreement terminates automatically in
     the event the Corporation ceases to be a member of the Thermo Group or
     ceases to be a participant in the Charter. In the event of a
     termination of the Services Agreement, the Corporation will be required
     to pay a termination fee equal to the fee that was paid by the
     Corporation for services under the Services Agreement for the
     nine-month period prior to termination. Following termination, Thermo
     Electron may provide certain administrative services on an as-requested
     basis by the Corporation or as required in order to meet the
     Corporation's obligations under Thermo Electron's policies and
     procedures. Thermo Electron will charge the Corporation a fee equal to
     the market rate for comparable services if such services are provided
     to the Corporation following termination. 
                                       21
PAGE
<PAGE>






          On May 29, 1986, the Corporation entered into a Tax Allocation
     Agreement with Thermo Electron (the "Tax Allocation Agreement").  Under
     the Tax Allocation Agreement, in years in which the Corporation has
     taxable income it will pay Thermo Electron amounts comparable to the
     taxes it would have paid if it had filed its own separate company tax
     returns.  In years in which the Corporation incurs a loss, the
     Corporation will receive amounts from Thermo Electron equivalent to the
     amount of benefit that the Corporation would have received if it had
     filed a separate return.  In 1995, the Corporation paid Thermo Electron
     $25,525,000 under the Tax Allocation Agreement.  The Corporation
     engages the Tecomet division of Thermo Electron for metal fabrication
     services.  During 1995, the Corporation paid $1,974,133 for such
     services.
      
          A subsidiary of the Corporation has an arrangement with ThermoTrex
     Corporation ("ThermoTrex"), a publicly traded, majority-owned
     subsidiary of Thermo Electron, whereby ThermoTrex provides certain
     research and development services to the Corporation, and the
     Corporation purchase flat screen x-ray sensitive detectors pursuant to
     purchase orders.  In 1995, the Corporation paid ThermoTrex $58,000 for
     such products and services.  The Corporation purchases printed circuit
     boards and cable assemblies from another subsidiary of Thermo
     Instrument pursuant to purchase orders.  In 1995, the Corporation paid
     this subsidiary $489,000 for such products.

          Effective April 1995, the Corporation sold certain services
     businesses to Thermo TerraTech Inc. (formerly known as Thermo Process
     Systems Inc.) ("Thermo TerraTech"), another subsidiary of Thermo
     Electron, for $34.3 million in cash.  These businesses had been owned
     and operated by the Corporation prior to April 1994, when they were
     contributed by the Corporation to a joint venture between the
     Corporation and Thermo TerraTech.  In April 1995, the joint venture was
     dissolved and these  businesses were returned to the Corporation.  The
     terms of the purchase were determined by negotiation between the
     management of Thermo TerraTech and the management of the Corporation,
     and the purchase price paid by Thermo TerraTech was based on the book
     value of the businesses purchased.
      
          On March 15, 1995, Thermo BioAnalysis, a subsidiary of the
     Corporation, completed a private placement primarily to outside
     investors of minority investments in its common stock.  Mr. Arvin H.
     Smith, the president and chief executive officer of the Corporation,
     purchased 9,000 shares of the common stock of Thermo BioAnalysis in
     such private placement at a purchase price of $10.00 per share, the
     same price paid by unaffiliated investors. 

          On August 3, 1995, ThermoQuest, a subsidiary of the Corporation,
     completed a private placement primarily to outside investors of
     $96,250,000 principal amount of 5% Convertible Subordinated Debentures
     due 2000.   Thermo Electron purchased $10,000,000 principal amount of
     such Debentures in the private placement.  On October 12, 1995, Thermo
     Optek, a subsidiary of the Corporation, completed a private placement
     primarily to outside investors of $96,250,000 principal amount of 5%
                                       22
PAGE
<PAGE>





     Convertible Subordinated Debentures due 2000.  Thermo Electron
     purchased $10,000,000 principal amount of such Debentures in the
     private placement.  Thermo Electron paid the same price for these
     Debentures as the outside investors.

          As of December 30, 1995, $36,573,000 of the Corporation's cash
     equivalents were invested in a repurchase agreement with Thermo
     Electron. Under this agreement, the Corporation in effect lends excess
     cash to Thermo Electron, which Thermo Electron collateralizes with
     investments principally consisting of corporate notes, U.S. government
     agency securities, money market funds, commercial paper and other
     marketable securities, in the amount of at least 103% of such
     obligation. The Corporation's funds subject to the repurchase agreement
     are readily convertible into cash by the Corporation and have a
     maturity of three months or less. The repurchase agreement earns a rate
     based on the Commercial Paper Composite Rate plus 25 basis points, set
     at the beginning of each quarter. 
      
          Thermo Electron owned approximately 85% of the Corporation's
     outstanding Common Stock on January 1, 1996. Thermo Electron intends
     for the foreseeable future to maintain at least 80% ownership of the
     Corporation. This may require the purchase by Thermo Electron of
     additional shares of the Corporation's Common Stock from time to time
     as the number of outstanding shares issued by the Corporation
     increases. These purchases may be made either in the open market or
     directly from the Corporation or through conversion of convertible
     debentures owned by Thermo Electron. 

          As of December 30, 1995, the Corporation had outstanding
     $140,000,000 of indebtedness to Thermo Electron, represented by a 3 /%
     Senior Convertible Note due 2000.























                                       23
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<PAGE>





                                         
                                 - PROPOSAL 2 -

                  PROPOSAL TO INCREASE AUTHORIZED COMMON STOCK

          The Board of Directors has determined that it is advisable to
     increase the Corporation's authorized Common Stock from 125 million
     shares to 250 million shares, and has voted to recommend that the
     Stockholders adopt an amendment to the Corporation's Certificate of
     Incorporation effecting the proposed increase.

          As of January 1, 1996, approximately 92.6 million shares of Common
     Stock were issued and outstanding (excluding treasury shares), after
     giving effect to a five-for-four stock split of the Common Stock
     effected in December 1995, and approximately an additional 20.4 million
     shares were reserved for issuance upon the conversion of existing
     securities and exercise of options granted under the Corporation's
     various stock-based plans.  Accordingly, a total of approximately 12
     million shares of Common Stock are available for future issuance.

          The Board of Directors believes it continues to be in the best
     interest of the Corporation to have sufficient additional authorized
     but unissued shares of Common Stock available in order to provide
     flexibility for corporate action in the future.  Management believes
     that the availability of additional authorized shares for issuance from
     time to time in the Board of Directors' discretion in connection with
     possible acquisitions of other companies, future financings, investment
     opportunities, stock splits or dividends or for other corporate
     purposes is desirable in order to avoid repeated separate amendments to
     the Corporation's Certificate of Incorporation and the delay and
     expense incurred in holding special meetings of the Stockholders to
     approve such amendments.  There are at present no specific
     understandings, arrangements or agreements with respect to any future
     acquisitions that would require the Corporation to issue any new shares
     of its Common Stock.  The Board of Directors believes that the
     currently available unissued shares do not provide sufficient
     flexibility for corporate action in the future.

          No further authorization by vote of the Stockholders will be
     solicited for the issuance of the additional shares of Common Stock
     proposed to be authorized, except as might be required by law,
     regulatory authorities or rules of the American Stock Exchange or any
     stock exchange on which the Corporation's shares may then be listed.
     The issuance of additional shares of Common Stock may have a dilutive
     effect on the Corporation's current Stockholders.  The Stockholders of
     the Corporation do not have any preemptive right to purchase or
     subscribe for any part of any new or additional issuance of the
     Corporation's securities.

          Thermo Electron, which owned approximately 84% of the outstanding
     voting stock of the Corporation on April 1, 1996, has sufficient votes
     to approve the amendment and has indicated its intention to vote for
     the approval of the amendment.

                                       24
PAGE
<PAGE>





     ______________________________________________________________________
          The affirmative vote of a majority of the Common Stock outstanding
     and entitled to vote at the Meeting is required to approve the
     amendment to the Corporation's Certificate of Incorporation to effect
     the proposed increase in the Corporation's authorized shares.  The
     Board of Directors considers this amendment to be advisable and in the
     best interests of the Corporation and its Stockholders and recommends
     that you vote FOR approval of the amendment.  If not otherwise
     specified, Proxies will be vote FOR approval of this amendment.

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



                  APPOINTMENT OF INDEPENDENT PUBLIC ACCOUNTANTS
      
          The Board of Directors has appointed Arthur Andersen LLP as
     independent public accountants for fiscal 1996. Arthur Andersen LLP has
     acted as independent public accountants for the Corporation since 1986.
     Representatives of that firm are expected to be present at the Meeting,
     will have the opportunity to make a statement if they desire to do so
     and will be available to respond to questions. The Board of Directors
     has established an Audit Committee, presently consisting of three
     outside Directors, the purpose of which is to review the scope and
     results of the audit. 
      
                                  OTHER ACTION
      
          Management is not aware at this time of any other matters that
     will be presented for action at the Meeting. Should any such matters be
     presented, the Proxies grant power to the proxy holders to vote shares
     represented by the Proxies in the discretion of such proxy holders. 
      
                              STOCKHOLDER PROPOSALS
      
          Proposals of Stockholders intended to be presented at the 1997
     Annual Meeting of the Stockholders of the Corporation must be received
     by the Corporation for inclusion in the Proxy Statement and form of
     Proxy relating to that meeting no later than December 25, 1996. 
      
                             SOLICITATION STATEMENT
      
          The cost of this solicitation of Proxies will be borne by the
     Corporation. Solicitation will be made primarily by mail, but regular
     employees of the Corporation may solicit Proxies personally, by
     telephone or telegram. Brokers, nominees, custodians and fiduciaries
     are requested to forward solicitation materials to obtain voting
     instructions from beneficial owners of stock registered in their names,
     and the Corporation will reimburse such parties for their reasonable
     charges and expenses in connection therewith. 
      
     Sunnyvale, California
     April 19, 1996


                                       25
PAGE
<PAGE>













                                  FORM OF PROXY

                         THERMO INSTRUMENT SYSTEMS INC.

        PROXY FOR ANNUAL MEETING OF STOCKHOLDERS TO BE HELD MAY 19, 1996

          THIS PROXY IS SOLICITED ON BEHALF OF THE BOARD OF DIRECTORS.

          The undersigned hereby appoints Arvin H. Smith, John N.
     Hatsopoulos and Jonathan W. Painter, or any one of them in the absence
     of the others, as attorneys and proxies of the undersigned, with full
     power of substitution, for and in the name of the undersigned, to
     represent the undersigned at the Annual Meeting of the Stockholders of
     Thermo Instrument Systems Inc., a Delaware corporation (the
     "Company"), to be held on Sunday, May 19, 1996, at 6:30 p.m., and at
     any adjournment or postponement thereof, and to vote all shares of
     common stock of the Company standing in the name of the undersigned on
     April 1, 1996, with all of the powers the undersigned would possess if
     personally present at such meeting:


            (IMPORTANT - TO BE SIGNED AND DATED ON THE REVERSE SIDE.)



                    Please mark your
     [   x   ]      votes as in this 
                    example.

     1.   ELECTION OF DIRECTORS OF THE COMPANY (See Reverse).

                                                    FOR         WITHHELD
                                                  [     ]       [     ]
     FOR all nominees listed at right, except
     vote withheld for the following nominees
     (if any):

     Nominees:
             Frank Borman
             George N. Hatsopoulos
             John N. Hatsopoulos
             Arvin H. Smith
             Polyvios C. Vintiadis

                                                 FOR     AGAINST   ABSTAIN

     2.   Approve amendment to the Certificate
          of Incorporation to increase the     [     ]   [     ]   [     ]
          authorized common stock from 125
          million to 250 million shares.
PAGE
<PAGE>





     3.   In their discrection on such other matters as may properly come
          before the meeting.



     The shares represented by this Proxy will be voted "FOR" the proposals
     set forth above if no instruction to the contrary is indicated or if
     no instruction is given.

     Copies of the Notice of  Meeting and of the Proxy Statement have been
     received by the undersigned.


     SIGNATURE(S)_______________________________________   

     DATE_________________

     Note:     This proxy should be dated, signed by the shareholder(s)
               exactly as his or her name appears hereon, and returned
               promptly in the enclosed envelope.  Persons signing in a
               fiduciary capacity should so indicate.  If shares are held


PAGE
<PAGE>





                            SCHEDULE 14A INFORMATION

   Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of
                                      1934
                               (Amendment No.   )

   Filed by the Registrant  [ X ]

   Filed by a Party other than the Registrant [   ]

   Check the appropriate box:

   [  ] Preliminary Proxy Statement   [  ] Confidential, for Use of the 
                                           Commission Only (as Permitted
                                           by Rule 14a-6(e)(2))

   [ X] Definitive Proxy Statement

   [  ] Definitive Additional Materials

   [  ] Soliciting Material Pursuant to S240.14a-11(c) or S240.14a-12

                         Thermo Instrument Systems Inc.
                         ------------------------------
                        
                  (Name of Registrant as Specified in Charter)


                   __________________________________________ 
                   (Name of Person(s) Filing Proxy Statement, 
                          if other than the Registrant)

   Payment of Filing Fee (Check the appropriate box):

   [  ] $125 per Exchange Act Rules 0-11(c)(1)(ii), 14a-6(i)(1),
        14a-6(i)(2) or Item 22(a)(2) of Schedule 14A.

   [  ] $500 per each party to the controversy pursuant to Exchange Act
        Rule 14a-6(i)(3).

   [  ] Fee computed on table below per Exchange Act Rules
         14a-6(i)(4) and 0-11.

        (1)  Title of each class of securities to which transaction
             applies:
        (2)  Aggregate number of securities to which transaction
             applies:
        (3)  Per unit price or other underlying value of transaction
             computed pursuant to Exchange Act Rule  0-11 (Set forth the
             amount on which the filing fee is calculated and state how it was
             determined):
        (4)  Proposed maximum aggregate value of transaction:
        (5)  Total fee paid:

   [ X] Fee paid previously with preliminary materials.
PAGE
<PAGE>







   [  ] Check box if any part of the fee is offset as provided by
        Exchange Act Rule 0-11(a)(2) and identify the filing for 
        which the offsetting fee was paid previously.  Identify the 
        previous filing by registration statement number, or the
        Form or Schedule and the date of its filing.
        (1)  Amount Previously Paid:
        (2)  Form, Schedule or Registration Statement No.:
        (3)  Filing Party:
        (4)  Date Filed:




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