THERMO INSTRUMENT SYSTEMS INC
DEF 14A, 1997-05-02
MEASURING & CONTROLLING DEVICES, NEC
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                           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 Section 240.14a-11(c) or 
       Section 240.14a-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):

       [ X ]No fee required.

       [   ]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: _______________________________________

       [   ]Fee paid previously with preliminary materials.

       [   ]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
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<PAGE>





            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: ___________________________________________

       Notes:
PAGE
<PAGE>













       THERMO INSTRUMENT SYSTEMS INC.
       1275 Hammerwood Avenue
       Sunnyvale, California 94089

                                                          April 29, 1997

       Dear Stockholder:

            The enclosed Notice calls the 1997 Annual Meeting of the
       Stockholders of Thermo Instrument Systems Inc.  We respectfully
       request all Stockholders attend this meeting, if possible. 
        
            Our Annual Report for the year ended December 28, 1996, is
       enclosed. We 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, We 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. 
        
            We would appreciate your immediate attention to the mailing
       of this proxy.
        
                                              Yours very truly,





                                         ARVIN H. SMITH
                                         Chairman and Chief Executive 
                                         Officer


                                         EARL R. LEWIS
                                         President and Chief Operating
                                         Officer


PAGE
<PAGE>










       THERMO INSTRUMENT SYSTEMS INC.
       1275 Hammerwood Avenue
       Sunnyvale, California 94089
        
        
                                                          April 29, 1997
        
       To the Holders of the Common Stock of
        THERMO INSTRUMENT SYSTEMS INC.
        
       NOTICE OF ANNUAL MEETING

            The 1997 Annual Meeting of the Stockholders of Thermo
       Instrument Systems Inc. (the "Corporation") will be held on
       Monday, June 2, 1997, at 10:00 a.m. at The Hyatt Regency Hotel,
       Hilton Head, South Carolina.  The purpose of the meeting is to
       consider and take action upon the following matters: 
        
       1.   Election of five directors.

       2.   A proposal recommended by the Board of Directors to extend
       the term of the Corporation's employee's stock purchase plan to
       November 2, 2005.

       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 7, 1997. 
        
            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

                                        2
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<PAGE>






       3PROXY STATEMENT

            The enclosed proxy is solicited by the Board of Directors of
       Thermo Instrument Systems Inc. (the "Corporation") for use at the
       1997 Annual Meeting of the Stockholders (the "Meeting") to be
       held on Monday, June 2, 1997, at 10:00 a.m. at The Hyatt Regency
       Hotel, Hilton Head, South Carolina, 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 May 2, 1997. 

       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 extend the
       term of the Corporation's employees' stock purchase plan to
       November 2, 2005.
        
            The representation in person or by proxy of a majority of
       the outstanding shares of common stock, $.10 par value ("Common
       Stock"), of the Corporation 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 management
       proposal to extend the term of the Corporation's employees' stock
       purchase plan, the affirmative vote of a majority of the shares
       present in person or represented by proxy and 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 the 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
                                        3
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<PAGE>





       or the proposal.  With respect to the election of directors and
       the management proposal, 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. 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 7, 1997 consisted of 97,222,325 shares of Common Stock.
       Only Stockholders of record at the close of business on April 7,
       1997 are entitled to vote at the Meeting. Each share is entitled
       to one vote. 
        

































                                        4
PAGE
<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
       subsidiaries and its parent company, Thermo Electron Corporation
       ("Thermo Electron"), a diversified high technology company, is
       reported under the caption "Stock Ownership." All of the nominees
       are currently directors of the Corporation.  
        
       Frank Borman        Col. Borman, 69, has been a director of the
                           Corporation since 1986. Col. Borman has
                           been president and chief executive officer
                           of Patlex Corporation, a patent licensing
                           company, and a trustee of the National
                           Geographic Society, for at least five
                           years. Col. Borman is also a director of
                           American Superconductor Corporation,
                           Database Online Corporation, Outboard
                           Marine Group Inc. and The Home Depot, Inc.

       George N.           Dr. Hatsopoulos, 70, has been a director of
       Hatsopoulos         the Corporation since 1986.  Dr.
                           Hatsopoulos has been the chairman and chief
                           executive officer of Thermo Electron since
                           he founded the company in 1956 and
                           president of Thermo Electron from 1956
                           until January 1997.  He was also chairman
                           of the board of the Corporation from 1986
                           to March 1997.  Dr. Hatsopoulos is also a
                           director of Photoelectron Corporation,
                           Thermedics Inc., Thermo Ecotek Corporation,
                           Thermo Electron, Thermo Fibertek Inc.,
                           Thermo Optek Corporation,  ThermoQuest
                           Corporation and ThermoTrex Corporation. Dr.
                           Hatsopoulos is the brother of Mr. John N.
                           Hatsopoulos, a director and the chief
                           financial officer and a vice president of
                           the Corporation.
                                        5
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<PAGE>





       John N. Hatsopoulos Mr. Hatsopoulos, 62, has been a director of
                           the Corporation since 1986 and chief
                           financial officer and a vice president of
                           the Corporation since 1988.  Mr.
                           Hatsopoulos has been the president of
                           Thermo Electron since January 1997 and the
                           chief financial officer of Thermo Electron
                           since 1988.  He was also an executive vice
                           president of Thermo Electron Corporation
                           from 1986 to January 1997. Mr. Hatsopoulos
                           is also a director of LOIS/USA Inc.,
                           Thermedics Inc., Thermo Ecotek Corporation,
                           Thermo Fibertek Inc., Thermo Power
                           Corporation, Thermo TerraTech Inc. and
                           ThermoTrex Corporation. Mr. Hatsopoulos is
                           the brother of Dr. George N. Hatsopoulos, a
                           director of the Corporation.

       Arvin H. Smith      Mr. Smith, 67, has been a director and
                           chief executive officer of the Corporation
                           since 1986, and chairman of the board since
                           March 1997.  He was also president of the
                           Corporation from 1986 to March 1997.  Mr.
                           Smith has been an executive vice president
                           of Thermo Electron since 1991 and was a
                           senior vice president of that company from
                           1986 to 1991.  Mr. Smith is also a director
                           of Thermo BioAnalysis Corporation, Thermo
                           Optek Corporation, Thermo Power
                           Corporation, ThermoQuest Corporation and
                           ThermoSpectra Corporation.
       Polyvios C.         Mr. Vintiadis, 61, has been a director of
       Vintiadis           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 Audit Committee
       and a Human Resources Committee. The Audit Committee consists
       solely of outside directors, and its present members are Mr.
       Vintiadis (Chairman), and Col. Borman. The Audit Committee
       reviews the scope of the audit with the Corporation's independent
       public accountants and meets with them for the purpose of

                                        6
PAGE
<PAGE>





       reviewing the results of the audit subsequent to its completion.
       The Human Resources Committee consists solely of outside
       directors, and its present members are Col. Borman (Chairman) and
       Mr. Vintiadis. 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 seven times during fiscal 1996.
       Each director attended at least 75% of all meetings of the Board
       of Directors and committees on which he served held during fiscal
       1996, except Mr. J. Hatsopoulos who attended two-thirds of such
       meetings.  Mr. J. Hatsopoulos is the chief financial officer of
       Thermo Electron and each of its publicly held subsidiaries, and
       his responsibilities require him to travel extensively on company
       business. 

       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.  Dr. G. Hatsopoulos, Mr. J.
       Hatsopoulos 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 25% or more of 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
                                        7
PAGE
<PAGE>





       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 of 123,502 shares of Common Stock has
       been reserved for issuance under the Deferred Compensation Plan.
       As of March 1, 1997, deferred units equal to 44,699.82 shares of
       Common Stock were accumulated under the Deferred Compensation
       Plan. 
        
       Directors Stock Option Plan

            The Corporation's directors stock option plan (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
                                        8
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<PAGE>





       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, 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 ThermoQuest
       Corporation, at an exercise price of $16.70 per share, on May 19,
       1996, 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  Metrika Systems
       Corporation and Thermo Optek 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.  As of March 31, 1997, options to purchase 69,620
       shares had been granted under the Directors Plan, options to
       purchase 2,811 shares had been exercised, options to purchase
       2,811 shares had lapsed, and an aggregate of 74,176 shares of
       Common Stock was reserved for future grant under the Directors
       Plan.

       Stock Ownership Policies for Directors

            During 1996, the Human Resources Committee of the Board of
       Directors (the "Committee") established a stock holding policy
       for directors.   The stock holding policy requires each director
       to hold a minimum of 1,000 shares of Common Stock.  Directors are
       requested to achieve this ownership level by the 1998 Annual
       meeting of Stockholders.  Directors who are also executive
       officers of the Corporation are required to comply with a
       separate stock holding policy established by the Committee in
       1996, which is described in "Committee Report on Executive
       Compensation - Stock Ownership Policies."

            In addition, the Committee adopted a policy requiring
       directors to hold shares of the Corporation's Common Stock equal
       to one-half of their net option exercises over a period of five
       years.  The net option exercise is determined by calculating the
       number of shares acquired upon exercise of a stock option, after
       deducting the number of shares that could have been traded to
                                        9
PAGE
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       exercise the option and the number of shares that could have been
       surrendered to satisfy tax withholding obligations attributable
       to the exercise of the option.  This policy is also applicable to
       executive officers and is described in "Committee Report on
       Executive Compensation -  Stock Ownership Policies."

       STOCK OWNERSHIP

            The following table sets forth the beneficial ownership of
       Common Stock, as well as the common stock of Thermo Electron and
       each majority-owned subsidiary of the Corporation, as of March 1,
       1997, 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.

            While certain directors and executive officers of the
       Corporation are also directors and executive officers of Thermo
       Electron or its subsidiaries other than the Corporation, all such
       persons disclaim beneficial ownership of the shares of Common
       Stock owned by Thermo Electron.

       
<TABLE>

<CAPTION>


                                                  Thermo
                               Thermo    Thermo     Bio-    Thermo Thermo-  Thermo- Metrika
                             Instrument Electron  Analysis  Optek   Quest   Spectra Systems
              Name (1)         Systems    Corp      Corp     Corp    Corp    Corp    Corp
                               Inc. 
                             (2)         (3)        (4)      (5)     (6)     (7)     (8)

        <S>                  <C>         <C>        <C>      <C>     <C>     <C>     <C>

        Thermo Electron   87,575,433     N/A        N/A      N/A     N/A      N/A     N/A
        Corporation (9)

        Frank Borman          23,941       0       1,500       0    1,500   1,500       0

        Richard W. K.        139,087    82,126    40,500   15,500 240,650   4,000       0
        Chapman                                                                           

        George N.            143,314 3,512,279    15,000   110,000  90,000  20,000      0
        Hatsopoulos

        John N. Hatsopoulos   81,204   526,768    25,000   120,000  92,100  20,000      0

        Denis A. Helm        161,729   164,378    15,000    15,200  10,000   4,000  2,000

        Barry S. Howe         99,886    81,04     64,300    15,000  90,000   4,010      0

        Earl R. Lewis        128,233   124,184    56,000   254,000  50,000  55,000      0

        Arvin H. Smith       431,667   513,038    39,000    98,000  90,000  20,000      0

        Polyvios C.            8,896     2,500     1,500         0   1,500   1,500      0
        Vintiadis

        All directors and
        current executive
        officers as a      1,236,649 5,151,319     263,800  633,700 671,750 135,010 2,000
        group (10 persons)








</TABLE>

         

       (1)  Except as reflected in the footnotes to this table, shares
       of the common stock beneficially owned consist of shares owned by
       the indicated person or by that person for the benefit of minor
       children, and all share ownership includes sole voting and
       investment power. 

       (2)  Shares of the Common Stock beneficially owned by Col.
       Borman, Dr. Chapman, Dr. G. Hatsopoulos, Mr. J. Hatsopoulos, Mr.
       Helm, Mr. Howe, Mr. Lewis, Mr. Smith, Mr. Vintiadis and all
       directors and executive officers as a group include 13,590,
       121,287, 93,750, 65,625, 112,500, 89,062, 112,500, 234,375, 6,561
       and 864,250 shares, respectively, that such person or group has
       the right to acquire within 60 days of March 1, 1997, through the
       exercise of stock options. Shares beneficially owned by Dr. G.
       Hatsopoulos, Mr. J. Hatsopoulos, Mr. Smith and all directors and
       executive officers as a group include 479, 529, 530 and 1,934
       full shares, respectively, allocated through March 1, 1997, 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, are executive officers
       of Thermo Electron (the "ESOP"). Shares beneficially owned by
       Col. Borman, Mr. Vintiadis and all directors and executive
       officers as a group include 10,351, 2,335 and 12,686 full shares,
       respectively, allocated through March 1, 1997, to their
       respective accounts maintained under the Corporation's deferred
                                       10
PAGE
<PAGE>





       compensation plan for directors. Shares beneficially owned by Dr.
       G. Hatsopoulos include 21,368 shares held by his spouse and 50
       shares allocated through March 1, 1997, to his spouse's account
       maintained pursuant to the ESOP.  Shares beneficially owned by
       Mr. Helm include a total of 4,212 shares held in trust for the
       benefit of minor children.  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. Lewis include 2,390
       shares held by his spouse.  No director or executive officer
       beneficially owned more than 1% of the Common Stock outstanding
       as of March 1, 1997; all directors and executive officers as a
       group beneficially owned 1.3% 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 distributed in
       June 1996 in the form of a 50% stock dividend. Shares of the
       common stock of Thermo Electron beneficially owned by Dr.
       Chapman, Dr. G. Hatsopoulos, Mr. J. Hatsopoulos, Mr. Helm, Mr.
       Howe, Mr. Lewis, Mr. Smith and all directors and executive
       officers as a group include 80,284, 1,499,500, 429,685, 106,347,
       73,287, 121,536, 222,411 and 2,630,624 shares, respectively, that
       such person or group has the right to acquire within 60 days of
       March 1, 1997, through the exercise of stock options. Shares
       beneficially owned by Dr. G. Hatsopoulos, Mr. J. Hatsopoulos, Mr.
       Smith and all directors and executive officers as a group include
       2,164, 1,934, 1,717 and 7,139 full shares, respectively,
       allocated through March 1, 1997, to their respective accounts
       maintained pursuant to the ESOP.  Shares beneficially owned by
       Dr. G. Hatsopoulos include 89,601 shares held by his spouse,
       168,750 shares held by a QTIP trust of which his spouse is a
       trustee, 39,937 shares held by a family trust of which his spouse
       is a trustee, and 153 full shares allocated through March 1,
       1997, to his spouse's account maintained pursuant to the ESOP.
       Except for Dr. G. Hatsopoulos, who beneficially owned 2.3% of the
       Thermo Electron common stock outstanding as of March 1, 1997, 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 3.4% of the
       Thermo Electron common stock outstanding as of March 1, 1997. 

       (4)  Shares of the common stock of Thermo BioAnalysis
       Corporation, a majority-owned subsidiary of the Corporation
       ("Thermo BioAnalysis"), beneficially owned by Col. Borman, Dr.
       Chapman, Dr. G. Hatsopoulos, Mr. J. Hatsopoulos, Mr. Helm, Mr.
       Howe, Mr. Lewis, Mr. Smith, Mr. Vintiadis and all directors and
       executive officers as a group include 1,500, 30,000, 15,000,
       15,000, 15,000, 50,000, 50,000, 20,000, 1,500 and 201,000 shares,
       respectively, that such person or group has the right to acquire
       within 60 days of March 1, 1997, through the exercise of stock
       options.  No director or executive officer beneficially owned
       more than 1% of the common stock of Thermo BioAnalysis
       outstanding as of March 1, 1997; all directors and executive

                                       11
PAGE
<PAGE>





       officers as a group beneficially owned 2.6% of such common stock
       outstanding as of such date.

       (5)  Shares of the common stock of Thermo Optek Corporation, a
       majority-owned subsidiary of the Corporation ("Thermo Optek"),
       beneficially owned by Dr. Chapman, Dr. G. Hatsopoulos, Mr. J.
       Hatsopoulos, Mr. Helm, Mr. Howe, Mr. Lewis, Mr. Smith and all
       directors and executive officers as a group include 15,000,
       90,000, 90,000, 15,000, 15,000, 225,000, 90,000 and 546,000
       shares, respectively, that such person or group has the right to
       acquire within 60 days of March 1, 1997, through the exercise of
       stock options.  Shares beneficially owned by Mr. Lewis include
       2,500 shares owned by his spouse and 2,000 shares owned by his
       sons.  No director or executive officer beneficially owned more
       than 1% of the common stock of Thermo Optek outstanding as of
       March 1, 1997; and directors and executive officers as a group
       beneficially owned 1.3% of such common stock outstanding as of
       such date.

       (6)  Shares of the common stock of ThermoQuest Corporation, a
       majority-owned subsidiary of the Corporation ("ThermoQuest"),
       beneficially owned by Col. Borman, Dr. Chapman, Dr. G.
       Hatsopoulos, Mr. J. Hatsopoulos, Mr. Helm, Mr. Howe, Mr. Lewis,
       Mr. Smith, Mr. Vintiadis and all directors and executive officers
       as a group include 1,500, 225,000, 90,000, 90,000, 10,000,
       90,000, 50,000, 90,000, 1,500 and 654,000 shares, respectively,
       that such person or group has the right to acquire within 60 days
       of March 1, 1997, through the exercise of stock options.  No
       director or executive officer beneficially owned more than 1% of
       the common stock of ThermoQuest outstanding as of March 1, 1997;
       all directors and executive officers as a group beneficially
       owned 1.4% of such common stock outstanding as of such date.

       (7)  Shares of the common stock of ThermoSpectra Corporation, a
       majority-owned subsidiary of the Corporation ("ThermoSpectra"),
       beneficially owned by Col. Borman, Dr. Chapman, Dr. G.
       Hatsopoulos, Mr. J. Hatsopoulos, Mr. Helm, Mr. Howe, Mr. Lewis,
       Mr. Smith, Mr. Vintiadis and all directors and executive officers
       as a group include 1,500, 4,000, 20,000, 20,000, 4,000, 4,000,
       50,000, 20,000, 1,500 and 130,000 shares, respectively, that such
       person or group has the right to acquire within 60 days of March
       1, 1997, 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 March 1, 1997; all
       Directors and executive officers as a group beneficially owned
       1.1% of such common stock outstanding as of such date.

       (8)  The directors and executive officers of the Corporation  did
            not individually or as a group beneficially own more than 1%
            of the  common  stock  of  Metrika  Systems  Corporation,  a
            majority-owned subsidiary of the Corporation, as of March 1,
            1997.


                                       12
PAGE
<PAGE>





       (9)  Includes 8,269,344 shares of Common Stock that Thermo
       Electron has the right to acquire within 60 days of March 1,
       1997, through the conversion of certain convertible notes of the
       Corporation held by Thermo Electron. Thermo Electron beneficially
       owned approximately 83% of the Common Stock outstanding as of
       March 1, 1997. Thermo Electron's address is 81 Wyman Street,
       Waltham, Massachusetts 02254-9046. 

       Section 16(a) Beneficial Ownership Reporting Compliance

            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 1996, except
       in the following instance.   Thermo Electron filed six Forms 4
       late, by periods ranging from seven days to two and a half
       months, reporting 48 transactions consisting of 42 open market
       purchases and six transactions involving the exercise of employee
       stock options.

       EXECUTIVE COMPENSATION

       NOTE: The shares reported below, in all cases, have been adjusted
       as applicable to reflect a three-for-two stock split of the
       common stock of Thermo Electron distributed in June 1996 in the
       form of a 50% 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. 





                                       13
PAGE
<PAGE>






       


<TABLE>

<CAPTION>


                               Summary Compensation Table


                                                      Long Term
                                                     Compensation
                                                      Securities
                                                      Underlying
              Name and      Fiscal      Annual     Options (No. of
                                     Compensation       Shares       All Other
         Principal Position  Year  Salary   Bonus  and Company (1) Compensation
                                                                        (2)
              <S>           <C>     <C>      <C>         <C>           <C>

        Arvin H. Smith (3)  1996  $135,000 $130,000  20,000 (TBA)    $6,750

           Chairman and                              90,000 (TOC)

           Chief Executive                           90,000 (TMQ)
        Officer
                            1995  $131,000 $128,100      --          $6,750

                            1994  $102,000 $112,200  20,000 (THS)    $6,750

        Earl R. Lewis (4)   1996  $180,000 $160,000  42,500 (TBA)   $11,550 (5)

           President and                              2,000 (TFG)

           Chief Operating                            2,000 (TLT)
        
           Officer                                  225,000 (TOC)

                                                      2,000 (TSR)

                                                     50,000 (TMQ)

                                                     40,000 (TXM)

                            1995  $145,000  $90,000     150 (TMO)    $6,750

                                                      7,500 (TBA)

                                                      5,000 (TLZ)

                            1994  $140,000 $100,000  67,500 (TMO)    $6,750

                                                                                                 1
PAGE
<PAGE>





                                                     50,000 (THS)


        Denis A. Helm       1996  $150,000  $86,400   3,900 (TMO)    $6,681

           Senior Vice                               15,000 (TBA)

        President                                    15,000 (TOC)

                                                     10,000 (TMQ)

                            1995  $142,000  $81,000   4,350 (TMO)    $6,750

                            1994  $140,000  $90,000  49,950 (TMO)    $6,750

                                                      4,000 (THS)

        Richard W. K.       1996  $170,000 $125,000     150 (TMO)    $7,021 (6)
        Chapman 
                                                     30,000 (TBA)
           Vice President                            
                                                      2,000 (TFG)

                                                      2,000 (TLT)

                                                     15,000 (TOC)

                                                    225,000 (TMQ)

                                                      2,000 (TSR)

                                                      4,000 (TXM)

                            1995  $159,500  $95,000     150 (TMO)    $6,749

                                                      5,000 (TLZ)

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

                                                     45,112 (TMO)

                                                      4,000 (THS)


        Barry S. Howe       1996  $145,000  $70,000   1,500 (TMO)    $8,076 (7)

           Vice President                            50,000 (TBA)

                                                      2,000 (TFG)

                                                      2,000 (TLT)

                                                     15,000 (TOC)

                                                     90,000 (TMQ)

                                                                                                 2
PAGE
<PAGE>





                                                      2,000 (TSR)

                                                      4,000 (TXM)

                            1995  $134,000  $65,000   1,650 (TMO)    $7,517

                                                      5,000 (TLZ)

                            1994  $130,000  $45,000  23,625 (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), Thermo
       BioAnalysis (designated in the table as TBA) Thermo Fibergen Inc.
       (designated in the table as TFG), ThermoLase Corporation
       (designated in the table as TLZ), ThermoLyte Corporation
       (designated in the table as TLT), Thermo Optek Corporation
       (designated in the table as TOC), ThermoQuest Corporation
       (designated in the table as TMQ), Thermo Sentron Inc. (designated
       in the table as TSR), ThermoSpectra (designated in the table as
       THS) and Trex Medical Corporation (designated in the table as
       TXM). 
        
       (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 has been executive vice president of Thermo
       Electron, as well as the president and chief executive officer of
       the Corporation, for the last three fiscal years. A portion of
       Mr. Smith's annual cash compensation (salary and bonus) has been
       allocated and paid by Thermo Electron in each of the last three
       fiscal years as compensation for the services provided to Thermo
       Electron based on the time he devoted to his responsibilities as
       an executive vice president of Thermo Electron.  The annual cash
       compensation (salary and bonus) reported in the table for Mr.
       Smith represents the amount paid by the Corporation and all other
       sources solely for Mr. Smith's services as chief executive
       officer of the Corporation. For 1996, 1995 and 1994, 50%, 50% and
       40%, respectively, of Mr. Smith's annual compensation (salary and
       bonus) was allocated to the Corporation for his service as the
       Corporation's chief executive officer.  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 majority-owned subsidiaries, from time to
       time by Thermo Electron or such other subsidiaries. These options
       are not reported in this table 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.
        
                                       14
PAGE
<PAGE>





       (4)  Mr. Lewis was promoted to president and chief operating
       officer of the Corporation in March 1997.   From January 1996 to
       March 1997, he was executive vice president and chief operating
       officer of the Corporation.  Prior to January 1996, he served as
       a senior vice president of the Corporation. 

       (5)  In addition to the matching contribution referred to in
       footnote (2), such amount includes $4,800, which represents the
       amount of compensation attributable to an interest-free loan
       provided to Mr. Lewis pursuant to the stock holding assistance
       plan of Thermo Optek.  See "Relationship with Affiliates - Stock
       Holding Assistance Plans."

       (6)  In addition to the matching contribution referred to in
       footnote (2), such amount includes $4,334, which represents the
       amount of compensation attributable to interest-free loans
       provided to Dr. Chapman pursuant to the stock holding assistance
       plans of Thermo BioAnalysis and ThermoQuest.  See "Relationship
       with Affiliates - Stock Holding Assistance Plans."

       (7)  In addition to the matching contribution referred to in
       footnote (2), such amount includes $1,444, which represents the
       amount of compensation attributable to an interest-free loan
       provided to Mr. Howe pursuant to the stock holding assistance
       plan of Thermo BioAnalysis.  See "Relationship with Affiliates -
       Stock Holding Assistance Plans."




























                                       15
PAGE
<PAGE>





       Stock Options Granted During Fiscal 1996

            The  following  table  sets  forth  information   concerning
       individual grants of stock options made during fiscal 1996 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 1996.  

       


<TABLE>

<CAPTION>


                                  Option Grants in Fiscal 1996


                                                                     Potential Realizable
                                           Percent                     Value at Assumed
                                             of
                                            Total                      Annual Rates of
                                           Options                          Stock
                             Number of     Granted Exercise           Price Appreciation
                            Securities       to                              for
                            Underlying    Employees  Price  Expira-    Option Term (2)
                              Options        in       Per     tion

              Name          Granted (1)    Fiscal    Share    Date      5%        10%
                                            Year
        <S>                     <C>         <C>       <C>      <C>     <C>        <C>

        Arvin H. Smith      20,000 (TBA)   2.4%(5)   $10.00 01/31/08   $159,200   $427,600
        (3)
                            90,000 (TOC)   2.9%(5)   $12.00 04/11/08   $859,500 $2,309,400

                            90,000 (TMQ)   3.2%(5)   $13.00 01/10/08   $931,500 $2,502,000


        Earl R. Lewis (4)   42,500 (TBA)   5.2%(5)   $12.00 06/21/08   $405,875 $1,090,550

                             2,000 (TFG)   0.4%(5)   $10.00 09/12/08    $15,920    $42,760

                             2,000 (TLT)   0.6%(5)   $10.00 03/11/08    $15,920    $42,760

                           225,000 (TOC)   7.2%(5)   $12.00 04/11/08 $2,148,750 $5,773,500

                            50,000 (TMQ)   1.8%(5)   $13.00 02/08/08   $517,500 $1,390,000

                             2,000 (TSR)   0.4%(5)   $14.00 03/11/08    $22,280    $59,880

                            40,000 (TXM)   1.9%(5)   $11.00 03/26/08   $350,000   $940,800


        Denis A. Helm        3,900 (TMO)   0.3%(5)   $42.79 05/22/99    $26,286    $55,224

                            15,000 (TBA)   1.8%(5)   $10.00 01/31/08   $119,400   $320,700

                            15,000 (TOC)   0.5%(5)   $12.00 04/11/08   $143,250   $384,900

                            10,000 (TMQ)   0.4%(5)   $13.00 02/08/08   $103,500   $278,000

                                                                                                 1
PAGE
<PAGE>





        Richard W. K.          150 (TMO)  0.01%(5)   $42.79 05/22/99     $1,011     $2,124
        Chapman
                            30,000 (TBA)   3.7%(5)   $10.00 01/31/08   $238,800   $641,400

                             2,000 (TFG)   0.4%(5)   $10.00 09/12/08    $15,920    $42,760

                             2,000 (TLT)   0.6%(5)   $10.00 03/11/08    $15,920    $42,760

                            15,000 (TOC)   0.5%(5)   $12.00 04/11/08   $143,250   $384,900

                           225,000 (TMQ)   7.9%(5)   $13.00 01/10/08 $2,328,750 $6,255,000

                             2,000 (TSR)   0.4%(5)   $14.00 03/11/08    $22,280    $59,880

                             4,000 (TXM)   0.2%(5)   $11.00 03/11/08    $35,000    $94,080


        Barry S. Howe        1,500 (TMO)   0.1%(5)   $42.79 05/22/99    $10,110    $21,240

                            50,000 (TBA)   6.1%(5)   $10.00 01/31/08   $398,000 $1,069,000

                             2,000 (TFG)   0.4%(5)   $10.00 09/12/08    $15,920    $42,760

                             2,000 (TLT)   0.6%(5)   $10.00 03/11/08    $15,920    $42,760

                            15,000 (TOC)   0.5%(5)   $12.00 04/11/08   $143,250   $384,900

                            90,000 (TMQ)   3.2%(5)   $13.00 01/10/08   $931,500 $2,502,000

                             2,000 (TSR)   0.4%(5)   $14.00 03/11/08    $22,280    $59,880

                             4,000 (TXM)   0.2%(5)   $11.00 03/11/08    $35,000    $94,080
















</TABLE>


       (1)  All of the options granted during the fiscal year are
       immediately exercisable as of the end of the fiscal year, except
       options to purchase the common stock of ThermoLyte Corporation,
       which are not exercisable until the earlier of (i) 90 days after
       the effective date of the registration of that company's common
       stock under Section 12 of the Securities Exchange Act of 1934
       (the "Exchange Act") and (ii) nine years from the grant date.  In
       all cases, the shares acquired upon exercise 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
       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)  The amounts shown on this table represent hypothetical gains
       that could be achieved for the respective options if exercised at
       the end of the option term.  These gains are based on assumed
       rates of stock appreciation of 5% and 10% compounded annually
       from the date the respective options were granted to their
       expiration date.  The gains shown are net of the option exercise
       price, but do not include deductions for taxes or other expenses
       associated with the exercise.  Actual gains, if any, on stock
       option exercises will depend on the future performance of the
       common stock of the granting corporation, the optionee's
       continued employment through the option period and the date on
       which the options are exercised.

                                       16
PAGE
<PAGE>





       (3)  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 and its majority-owned subsidiaries.
       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. 

       (4)  Mr. Lewis has served as a vice president of Thermo Electron
       since September 1996 and from time to time may be granted options
       to purchase common stock of Thermo Electron after his
       appointment.  These options are not reported in the table as they
       were granted as compensation for service to Thermo Electron in a
       capacity other than his capacity as an executive officer of the
       Corporation.

       (5)  These options were granted under stock option plans
       maintained by Thermo Electron companies 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 1996  and Fiscal  Year-End
       Option Values

            The following  table reports  certain information  regarding
       stock option exercises during  fiscal 1996 and outstanding  stock
       options held at the end of fiscal 1996 by the Corporation's chief
       executive officer  and the  other  named executive  officers.  No
       stock appreciation  rights  were exercised  or  were  outstanding
       during fiscal 1996. 



       

<TABLE>

<CAPTION>





                           Aggregated Option Exercises In Fiscal 1996 And 
                                 Fiscal 1996 Year-End Option Values


                                                              Number of
                                                             Unexercised
                                                             Options at 
                                         Shares                Fiscal           Value of
                                        Acquired              Year-End        Unexercised
                                           on      Value    (Exercisable/     In-the-Money
             Name           Company     Exercise  Realized Unexercisable)       Options
                                                                 (1)
        <S>            <C>              <C>      <C>             <C>              <C>
        Arvin H. Smith Thermo                  --       --   234,375/0     $3,795,703 /--
        (2)            Instrument
                       Systems

                       Thermo                  --       --    20,000/0        $62,500 /--
                       BioAnalysis

                       Thermo Optek            --       --    90,000/0             $0 /--

                       ThermoQuest             --       --    90,000/0             $0 /--

                       ThermoSpectra           --       --    20,000/0        $37,500 /--

        Earl R. Lewis  Thermo                  --       --   112,500/0     $1,821,938 /--
        (5)            Instrument
                       Systems

                       Thermo Electron     28,685 $688,261   126,937/0(4)  $2,491,528 /--

                       Thermo                  --       --    50,000/0        $71,251 /--
                       BioAnalysis

                       Thermo Fibergen         --       --     2,000/0         $1,500 /--

                       Thermo Fibertek      1,350  $15,525     1,350/0         $8,100 /--

                                                                                                 1
PAGE
<PAGE>





                       ThermoLase              --       --     5,000/0             $0 /--

                       ThermoLyte              --       --         0/2,000         -- /$0(3)

                       Thermo Optek            --       --   225,000/0             $0 /--

                       ThermoQuest             --       --    50,000/0             $0 /--

                       Thermo Sentron          --       --     2,000/0             $0 /--

                       ThermoSpectra           --       --    50,000/0        $93,750 /--

                       Thermo Trex            420  $16,191        --/--            -- /--

                       Trex Medical            --       --    40,000/0        $65,000 /--

        Denis A. Helm  Thermo                  --       --   112,500/0     $1,821,938 /--
                       Instrument
                       Systems

                       Thermo Electron      8,774 $262,275   106,347/0(4)  $2,000,898 /--

                       Thermo                  --       --    15,000/0        $46,875 /--
                       BioAnalysis

                       Thermo Ecotek           --       --     6,000/0        $70,500 /--

                       Thermo Fibertek         --       --     6,750/0        $40,500 /--

                       Thermo Optek            --       --    15,000/0             $0 /--

                       ThermoQuest             --       --    10,000/0             $0 /--

                       ThermoSpectra           --       --     4,000/0         $7,500 /--

                       Thermo Trex             --       --     2,100/0        $50,768 /--

        Richard W. K.  Thermo                  --       --   121,287/0     $2,096,512 /--
        Chapman        Instrument
                       Systems

                       Thermo Electron         --       --    80,284/0(4)  $1,556,517 /--

                       Thermo                  --       --    30,000/0        $93,750 /--
                       BioAnalysis

                       Thermo Fibergen         --       --     2,000/0         $1,500 /--

                       Thermo Fibertek         --       --     6,750/0        $40,500 /--

                       ThermoLase              --       --     5,000/0             $0 /--

                       ThermoLyte              --       --         0/2,000        --/ /$0(3)

                                                                                                 2
PAGE
<PAGE>





                       Thermo Optek            --       --    15,000/0             $0 /--

                       ThermoQuest             --       --   225,000/0             $0 /--

                       Thermo Sentron          --       --     2,000/0             $0 /--

                       ThermoSpectra           --       --     4,000/0         $7,500 /--

                       Thermo Trex             --       --       270/0         $6,528 /--

                       Trex Medical            --       --     4,000/0         $6,500 /--

        Barry S. Howe  Thermo                  --       --    89,062/0     $1,561,042 /--
                       Instrument
                       Systems

                       Thermo Electron         --       --    73,287/0(4)  $1,428,259 /--

                       Thermedics              --       --     4,000/0         $9,100 /--

                       Thermo                  --       --    50,000/0       $156,250 /--
                       BioAnalysis

                       Thermo Ecotek        5,250  $48,127     6,000/0        $61,500 /--

                       Thermo Fibergen         --       --     2,000/0         $1,500 /--

                       Thermo Fibertek         --       --    15,750/0        $64,890 /--

                       ThermoLase              --       --     5,000/0             $0 /--

                       ThermoLyte              --       --         0/2,000         -- /$0(3)

                       Thermo Optek            --       --    15,000/0             $0 /--

                       Thermo Power            --       --     4,000/0             $0 /--

                       ThermoQuest             --       --    90,000/0             $0 /--

                       Thermo Sentron          --       --     2,000/0             $0 /--

                       ThermoSpectra           --       --     4,000/0         $7,500 /--

                       Thermo TerraTech        --       --     4,000/0         $3,880 /--

                       Thermo Trex          1,350  $55,755     4,000/0        $51,700 /--

                       Trex Medical            --       --     4,000/0         $6,500 /--





                                                                                                 3






</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 ThermoLyte
       Corporation, which are not exercisable until the earlier of (i)
       90 days after the effective date of the registration of that
       company's common stock under Section 12 of the Exchange Act and
       (ii) nine years after the grant date.  In all cases, 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
                                       17
PAGE
<PAGE>





       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
       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 other 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 28, 1996. Accordingly, no value in excess
       of exercise price has been attributed to these options. 

       (4)  Options to purchase 67,500, 45,000, 45,000 and 22,500 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. 

       (5)  Mr. Lewis has served as a vice president of Thermo Electron
       since September 1996 and from time to time may be granted options
       to purchase common stock of Thermo Electron after his
       appointment.  These options are not reported in the table as they
       were granted as compensation for service to Thermo Electron in a
       capacity other than his capacity as an executive officer of the
       Corporation.

       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
                                       18
PAGE
<PAGE>





       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 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 28, 1996, Mr. Smith and Mr.
       Helm would have received approximately $313,000 (with respect to
       the first year in which benefits would be paid) and $235,000,
       respectively. 
                                       19
PAGE
<PAGE>






       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 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 500
       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
                                       20
PAGE
<PAGE>





       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 1996 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 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 and contributions to shareholder value,
       and earnings growth, and are measures of corporate and divisional
       performance that are evaluated using graphs developed by Thermo
       Electron intended 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 1996 measured return on
       net assets, growth in income, and return on sales, and the
       Committee's determinations also included a subjective 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 the operating measures and
       the subjective evaluation varies among the executives, depending
       on their roles and responsibilities within the organization. 
        
            The bonuses  for named  executive officers  approved by  the
       Committee  with  respect  to  fiscal  1996  performance  in  each
       instance exceeded the median potential bonus.

       Stock Option Program


                                       21
PAGE
<PAGE>





            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 net awards
       to purchase shares of Common Stock to all employees over a
       five-year period below 12% 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 to the named
       executive officers in 1996 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 board of directors of the
       granting company using a similar analysis. 

       Stock Ownership Policies

            During 1996, the Committee established a stock holding
       policy for executive officers of the Corporation.  The stock
                                       22
PAGE
<PAGE>





       holding policy specifies an appropriate level of ownership of the
       Corporation's Common Stock as a multiple of the officer's
       compensation.  For the chief executive officer, the multiple is
       one times his base salary and reference bonus for the calendar
       year.  For all other officers, the multiple is one times the
       officer's base salary.  The Committee deemed it appropriate to
       permit officers to achieve these ownership levels over a
       three-year period.

            In order to assist officers in complying with the policy,
       the Committee also adopted a stock holding assistance plan under
       which the Corporation is authorized to make interest-free loans
       to officers to enable them to purchase shares of the Common Stock
       in the open market.  The loans are required to be repaid upon the
       earlier of demand or the fifth anniversary of the date of the
       loan, unless otherwise authorized by the Committee.  No loans
       were outstanding under this plan in 1996.

            The Committee also adopted a policy requiring its executive
       officers to hold shares of the Corporation's Common Stock
       acquired upon the exercise of stock options granted by the
       Corporation.  Under this policy, executive officers are required
       to hold one-half of their net option exercises over a period of
       five years.  The net option exercise is determined by calculating
       the number of shares acquired upon exercise of a stock option,
       after deducting the number of shares that could have been traded
       to exercise the option and the number of shares that could have
       been surrendered to satisfy tax withholding obligations
       attributable to the exercise of the options.

            Similar stock holding policies and stock holding assistance
       plans have been adopted by each of the Corporation's publicly
       traded, majority-owned subsidiaries. Certain executive officers
       of the Corporation who are chief executive officers of these
       subsidiaries are required to comply with these stock holding
       policies in lieu of the Corporation's stock holding policy.  See
       "Relationship with Affiliates - Stock Holding Assistance Plans."
       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). 

       1996 CEO Compensation
                                       23
PAGE
<PAGE>






            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
       company. 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. 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.  

            In March 1996, the Committee conducted its review of Mr.
       Smith's proposed salary for 1997 and bonus for 1996 performance.
       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 1996 to the Corporation,
       based on his relative responsibilities at the Corporation and
       Thermo Electron.  
        
            Awards to Mr.  Smith of  options to purchase  shares of  the
       Corporation's  Common   Stock   are   reviewed   and   determined
       periodically by the Committee using criteria similar to that used
       for the other executive officers  of the Corporation.  No  awards
       to purchase shares of the Corporation's Common Stock were made to
       Mr. Smith in fiscal 1996.  In 1996, Mr. Smith was awarded options
       to  purchase  shares  of  the  common  stock  of  the   following
       majority-owned  subsidiaries   of   the  Corporation:      Thermo
       BioAnalysis Corporation, Thermo Optek Corporation and ThermoQuest
       Corporation.  These option awards were awarded in connection with
       Mr. Smith's position as  a director of  these companies and  were
       determined in a manner consistent with awards to other  officers,
       as described above.

       Col. Frank Borman (Chairman)
       Mr. Polyvios C. Vintiadis

       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
                                       24
PAGE
<PAGE>





       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"). 
        
















































                                       25
PAGE
<PAGE>





       Comparison of 1991-1996 Total Return Among Thermo Instrument
       Systems Inc., the American Stock Exchange Market Value Index, and
       the Corporation's Peer Group.

       GRAPH APPEARS HERE



       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." 

       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
                                       26
PAGE
<PAGE>





       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  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. 
        
            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
                                       27
PAGE
<PAGE>





       the Corporation. The Corporation was assessed an annual fee equal
       to 1.0%  of the  Corporation's revenues  for these  services  for
       calendar 1996.  The fee is  reviewed annually and may be  changed
       by mutual  agreement  of  the Corporation  and  Thermo  Electron.
       During fiscal  1996,  Thermo Electron  assessed  the  Corporation
       $12.1 million  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. 

            The Corporation has 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 1996,  the  Corporation  paid  Thermo
       Electron $18,600,000 under the Tax Allocation Agreement.  

            From time to time the Corporation may transact business with
       other companies in  the Thermo  Group.    In  fiscal 1996,  these
       transactions included the following.
        
            The Corporation  engages  the  Tecomet  division  of  Thermo
       Electron for  metal  fabrication  services.    During  1996,  the
       Corporation paid approximately $1,304,000 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 purchases  flat  screen  x-ray
       sensitive detectors pursuant  to purchase orders.   In 1996,  the
       Corporation  paid  ThermoTrex  $97,689  for  such  products   and
       services.  In 1996, the Corporation purchased other products from
       Thermo Electron and its  wholly- and majority-owned  subsidiaries

                                       28
PAGE
<PAGE>





       in  the  ordinary  course  of   business  for  an  aggregate   of
       approximately $864,000.  

            On  December   16,   1996,   Metrika   Systems   Corporation
       ("Metrika"), a subsidiary of the Corporation, completed a private
       placement of  its common  stock primarily  to outside  investors.
       Mr. Denis A. Helm,  a senior vice  president of the  Corporation,
       purchased 2,000 shares  of the  common stock of  Metrika in  such
       private placement at  a purchase  price of $7.50  per share,  the
       same price paid by unaffiliated investors. 

            As of  December 28,  1996, the  Corporation had  outstanding
       $140,000,000 of indebtedness to Thermo Electron, represented by a
       3 /% Senior Convertible Note due 2000.  As of December 28,  1996,
       the Corporation's Thermo Optek  Corporation ("Thermo Optek")  and
       ThermoQuest Corporation  ("ThermoQuest")  subsidiaries  each  had
       $10,000,000  of  outstanding  indebtedness  to  Thermo   Electron
       pursuant to Thermo Optek's 5% Convertible Subordinated Debentures
       due  2000   and   ThermoQuest's   5%   Convertible   Subordinated
       Debentures, due 2000.

              In  connection   with  the  1996   acquisition  of   Kevex
       Instruments   and   Kevex   X-ray,   ThermoSpectra    Corporation
       ("ThermoSpectra"), a  subsidiary  of  the  Corporation,  borrowed
       $15,000,000 from Thermo  Electron pursuant to  a promissory  note
       due August  1998.   In connection  with the  acquisition of  Park
       Scientific Instruments ThermoSpectra in March 1997, ThermoSpectra
       borrowed  $10,000,000  from   Thermo  Electron   pursuant  to   a
       promissory note due March 1999.  These notes bear interest at the
       90-day Commercial Paper Composite Rate plus 25 basis points,  set
       at the beginning  of each  quarter.   The interest  rate for  the
       notes outstanding in 1996 was 5.77%.

            In March  1997 the  Corporation borrowed  $210,000,000  from
       Thermo Electron to  fund its  acquisition of the  shares of  Life
       Sciences International  plc  ("Life Sciences")  pursuant  to  the
       Corporation's offer for  all of  the outstanding  shares of  Life
       Sciences.  This obligation is evidenced by a promissory note  due
       March 26,  1999 and  bearing  interest at  a  rate equal  to  the
       Commercial Paper Composite Rate plus 25 basis points.

            Thermo Electron owned approximately 82% of the Corporation's
       outstanding Common Stock  on December 28,  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.   In January 1996,  the Corporation adopted a plan  for
       the sale  of its  shares to  Thermo Electron  at the  request  of
       Thermo  Electron  to  allow  Thermo  Electron  to  maintain   80%
       ownership of the Corporation.    The sale  of shares pursuant  to
                                       29
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       such plan would be made at fair market value and would be subject
       to approval of a committee of  the Board of Directors formed  for
       that purpose.

            As of December 28, 1996, approximately $459.1 million 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  90-day Commercial Paper Composite Rate  plus
       25 basis points, set at the beginning of each quarter. 

       Stock Holding Assistance Plan

            In 1996,  the Corporation  adopted  a stock  holding  policy
       which requires  its  executive officers  to  acquire and  hold  a
       minimum number of shares of Common Stock.  In order to assist the
       executive officers in complying with the policy, the  Corporation
       also adopted a stock holding  assistance plan under which it  may
       make interest-free loans to certain key employees, including  its
       executive officers, to purchase Common Stock in the open  market.
       No loans were outstanding under this plan in 1996.

            Each of  the Corporation's  publicly traded,  majority-owned
       subsidiaries have  adopted  similar stock  holding  policies  and
       stock holding  assistance plans,  which are  applicable to  their
       executive  officers.     Certain   executive  officers   of   the
       Corporation are  also  the  chief  executive  officers  of  these
       subsidiaries and  are required  to comply  with the  subsidiary's
       stock holding policies.   Mr.  Earl R.  Lewis, the  Corporation's
       president  and  chief  operating  officer,  is  also  the   chief
       executive officer of Thermo Optek.   Dr. Richard W.K. Chapman,  a
       vice president of  the Corporation, is  also the chief  executive
       officer of ThermoQuest and  the chairman of  the board of  Thermo
       BioAnalysis.   Mr.  Barry  S.  Howe,  a  vice  president  of  the
       Corporation, is  also  the  chief  executive  officer  of  Thermo
       BioAnalysis.  In 1996, Mr. Lewis received a loan in the principal
       amount of  $194,029.50  under  the  Thermo  Optek  stock  holding
       assistance plan to purchase 15,000 shares of the common stock  of
       Thermo Optek.    Dr.  Chapman  received  loans  in  1996  in  the
       principal amounts of $210,653.50 and $131,176.30 under the  stock
       holding assistance plans of  ThermoQuest and Thermo  BioAnalysis,
       respectively, to purchase  15,000 shares of  the common stock  of
       ThermoQuest and   10,000  shares  of the common  stock of  Thermo
       BioAnalysis.  In 1996, Mr. Howe received a loan in the  principal
       amount of $164,375.52 under the stock holding assistance plan  of
       Thermo  BioAnalysis   to  purchase   12,000  shares   of   Thermo
       BioAnalysis.  Each of these loans are repayable upon the  earlier
                                       30
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       of demand  or the  fifth anniversary  of the  date of  the  loan,
       unless otherwise authorized by  the human resources committee  of
       the board of directors of the applicable company.

       - PROPOSAL 2 -

       PROPOSAL TO EXTEND THE TERM OF THE EMPLOYEES' STOCK PURCHASE PLAN

            The Board of Directors has recommended that the Stockholders
       approve an amendment to the Corporation's employees' stock
       purchase plan (the "Stock Purchase Plan") that would extend the
       term of the plan for an additional ten years to November 2, 2005.
       The material features of the Stock Purchase Plan are described
       below.  If the plan amendment is not approved by the Stockholders
       at this meeting, the Stock Purchase Plan will be discontinued
       effective as of November 1, 1997.  The Board of Directors
       believes that the Stock Purchase Plan is an important incentive
       in attracting and retaining key personnel, in motivating
       individuals to contribute significantly to the Corporation's
       future growth and success, and in aligning the long-term interest
       of these individuals with those of the Corporation's
       Stockholders.  For these reasons, the Board of Directors has
       acted to continue the plan and is recommending the extension to
       the Stockholders for approval.  The following is a summary of the
       terms of the Stock Purchase Plan.





























                                       31
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<PAGE>






       Summary of the Stock Purchase Plan

       Participation; Administration

            All full-time employees and part-time employees working at
       least 20 hours per week and who have been employed for at least
       six months by the Corporation are eligible to participate in the
       Stock Purchase Plan, unless they own more than 5% of the Common
       Stock of the Corporation.  For purposes of determining the term
       of employment, employees are credited with years of continued
       employment with Thermo Electron or its other subsidiaries
       immediately prior to joining the Corporation.  Options to
       purchase shares of Common Stock of the Corporation may be granted
       from time to time at the discretion of the Board of Directors,
       which also determines the date upon which such options are
       exercisable.  At the present time, only employees based in the
       United States are eligible to participate in the Stock Purchase
       Plan.  The number of employees potentially eligible to
       participate in the Stock Purchase Plan is approximately 6,870
       persons.

       Contributions

            A participating employee may purchase stock only through
       payroll deductions, which may not exceed 10% of the employee's
       gross salary or wages during the year.  Employees are allowed to
       decrease, but not increase the percentage of wages contributed
       once during the plan year.  An employee may suspend his or her
       contributions, but then is not permitted to contribute again for
       the remainder of the plan year.

       Terms of Options

            The exercise price is fixed on the grant date at the start
       of the plan year and is 95% of the fair market value for such
       stock on such date.  On the exercise date, participants may elect
       to use their accumulated payroll deductions to purchase shares at
       the exercise price.  Participants must agree not to resell the
       shares so purchased for a period of six months following the
       exercise date.  The options are nontransferable, and except in
       the case of death of the employee, may not be exercised if the
       employee is not still employed by the Corporation at the exercise
       date.  If an employee dies, his or her beneficiary may withdraw
       the accumulated payroll deduction or use such deductions to
       purchase shares on the exercise date.  A participant may elect to
       discontinue participation at any time prior to the exercise date
       and to have his or her accumulated payroll deduction refunded
       together with interest on such amount as fixed by the Board of
       Directors from time to time.

       Shares Subject to the Stock Purchase Plan


                                       32
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            The number of shares that are currently available for
       issuance under the Stock Purchase Plan is 604,648 shares of the
       Corporation's Common Stock, subject to adjustment for stock
       splits and similar events.  The proceeds received by the
       Corporation from the exercise of options granted under the Stock
       Purchase Plan will be used for the general purposes of the
       Corporation.  Shares issued under the Stock Purchase Plan may be
       authorized but unissued or shares reacquired by the Corporation
       and held in its treasury.

       Amendment and Termination

            The Stock Purchase Plan shall remain in full force and
       effect until suspended or discontinued by the Board of Directors.
       The Board of Directors may at any time or times amend or review
       the Stock Purchase Plan for any purpose which may be permitted by
       law, or may at any time terminate the Stock Purchase Plan,
       provided that no amendment that is not approved by the
       Stockholders shall be effective if it would cause the Stock
       Purchase Plan to fail to satisfy the requirements of Rule 16b-3
       (or any successor rule) of the Securities Exchange Act of 1934,
       as amended.  No amendment of the Stock Purchase Plan may
       adversely affect the rights of any recipient of any option
       previously granted without such recipient's consent.

       Term of the Stock Purchase Plan

            The Stock Purchase Plan will expire on November 2, 2005,
       provided that the extension of the term of the Stock Purchase
       Plan is approved by the Stockholders at this Meeting.

       Federal Income Tax Aspects

            Federal income tax is not imposed upon an employee in the
       year an option is granted or the year the shares are purchased
       pursuant to the exercise of the option granted under the Stock
       Purchase Plan.  Federal income tax generally is imposed upon an
       employee when he or she sells or otherwise disposes of the shares
       acquired pursuant to the Stock Purchase Plan.  When an employee
       sells or disposes of the shares, if such sale or disposition
       occurs more than two years from the grant date and more than one
       year from the exercise date, then Federal income tax assessed at
       ordinary rates will be imposed upon the amount by which the fair
       market value of the shares on the date of grant or disposition,
       whichever is less, exceeds the amount paid for the shares.  In
       addition, the difference between the amount received by the
       employee at the time of sale and the employee's tax basis in the
       shares, which is equal to the amount paid on exercise of the
       option plus the amount recognized as ordinary income, will be
       recognized as a capital gain or loss.  The Corporation will not
       be allowed a deduction under these circumstances for Federal
       income tax purposes.  If the employee sells or disposes of the
       shares sooner than two years from the grant date or one year from
       the exercise date, then the employee's entire gain (the
                                       33
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<PAGE>





       difference between the fair market value at disposition and the
       amount paid for the shares) will be taxed as ordinary income, and
       the Corporation would be entitled to a deduction equal to that
       amount.

            The closing price per share on the American Stock Exchange
       of the Common Stock on April 25, 1997 was $29.375.

       Recommendation

            The Board of Directors believes that the extension of the
       term of the Stock Purchase Plan is important for the Corporation
       to attract and retain key employees and to be able to continue to
       offer them the opportunity to participate in the ownership and
       growth of the Corporation through an employees stock purchase
       plan.  In addition, the Board of Directors believes the Stock
       Purchase Plan is in the best interest of the Corporation and its
       Stockholders and recommends that the Stockholders vote FOR the
       approval of the extension of the term of the Stock Purchase Plan.
       Thermo Electron, which owned of record approximately 82% of the
       outstanding voting stock of the Corporation on April 7, 1997, has
       indicated its intention to vote for the proposal.

       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
       1998 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 January 2, 1998. 

       SOLICITATION STATEMENT

                                       34
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<PAGE>





            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,  facsimile transmission  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 29, 1997










































                                       35
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<PAGE>





                                 FORM OF PROXY

                        THERMO INSTRUMENT SYSTEMS INC.

       PROXY FOR ANNUAL MEETING OF STOCKHOLDERS TO BE HELD JUNE 2, 1997

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

            The undersigned hereby appoints John N. Hatsopoulos,
       Jonathan W. Painter and Arvin H. Smith, 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 Monday, June
       2, 1997, at 10:00 a.m. at The Hyatt Regency Hotel, Hilton Head,
       South Carolina, 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 7, 1997, 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 authority to vote
       withheld for the following nominees (if any)

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

                                          FOR    AGAINST    ABSTAIN
       2.   Approve management proposal
            to extend the                [   ]   [    ]     [     ] 
            term of the Corporation's
            employees' stock 
            purchase plan to November 2, 2005.

       3.   In their discretion 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.
                                       36
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<PAGE>






       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
            by joint tenants or as community property, both should sign.


       AA971210023










































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