THERMO INSTRUMENT SYSTEMS INC
10-Q, 1995-11-08
MEASURING & CONTROLLING DEVICES, NEC
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                       SECURITIES AND EXCHANGE COMMISSION


                              Washington, DC 20549


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


                                    FORM 10-Q

   (mark one)

   [ X ] Quarterly Report Pursuant to Section 13 or 15(d) of the Securities
         Exchange Act of 1934 for the Quarter Ended September 30, 1995.

   [   ] Transition Report Pursuant to Section 13 or 15(d) of the Securities
         Exchange Act of 1934.

                          Commission File Number 1-9786


                         THERMO INSTRUMENT SYSTEMS INC.
             (Exact name of Registrant as specified in its charter)

   Delaware                                                         04-2925809
   (State or other jurisdiction of                            (I.R.S. Employer
   incorporation or organization)                          Identification No.)

   504 Airport Road
   Post Office Box 2108
   Santa Fe, New Mexico                                             87504-2108
   (Address of principal executive offices)                         (Zip Code)


       Registrant's telephone number, including area code: (617) 622-1000

        Indicate by check mark whether the Registrant (1) has filed all
        reports required to be filed by Section 13 or 15(d) of the
        Securities Exchange Act of 1934 during the preceding 12 months
        (or for such shorter period that the Registrant was required to
        file such reports), and (2) has been subject to such filing
        requirements for the past 90 days. Yes [ X ]  No  [   ]
           
        Indicate the number of shares outstanding of each of the issuer's
        classes of Common Stock, as of the latest practicable date.

                   Class                  Outstanding at October 27, 1995
         ----------------------------     -------------------------------
         Common Stock, $.10 par value                73,106,217
PAGE
<PAGE>

                                                                     FORM 10-Q
                                                            September 30, 1995
                         THERMO INSTRUMENT SYSTEMS INC.


   PART I - Financial Information
 
   Item 1 - Financial Statements

   (a) Consolidated Balance Sheet - Assets as of September 30, 1995 and
       December 31, 1994 (In thousands) (Unaudited)

                                                 September 30,  December 31,
                                                          1995          1994
                                                 -------------  ------------

   Current Assets:
    Cash and cash equivalents                       $  310,173    $  152,933
    Available-for-sale investments, at quoted
     market value (amortized cost of $2,280
     and $15,385) (includes $4,471 and $2,904
     of related party investments)                       4,471        15,931
    Accounts receivable, less allowances
     of $10,367 and $8,779                             184,462       159,615
    Unbilled contract costs and fees                     6,455         5,903
    Inventories:
     Raw materials and supplies                         81,437        65,441
     Work in process                                    35,613        27,879
     Finished goods                                     33,841        28,033
    Prepaid expenses                                     6,915         5,388
    Prepaid income taxes                                28,420        28,533
                                                    ----------    ----------
                                                       691,787       489,656
                                                    ----------    ----------

   Property, Plant and Equipment, at Cost              185,053       170,907

    Less: Accumulated depreciation and
          amortization                                  51,714        43,983
                                                    ----------    ----------
                                                       133,339       126,924
                                                    ----------    ----------
   Net Assets of Discontinued Operations (Note 5)            -        34,265
                                                    ----------    ----------
   Patents and Other Assets                             25,137        22,224
                                                    ----------    ----------
   Cost in Excess of Net Assets of Acquired
    Companies (Note 2)                                 358,730       338,848
                                                    ----------    ----------
                                                    $1,208,993    $1,011,917
                                                    ==========    ==========


   The accompanying notes are an integral part of these consolidated financial
   statements.



                                        2PAGE
<PAGE>

                                                                     FORM 10-Q
                                                            September 30, 1995
                         THERMO INSTRUMENT SYSTEMS INC.


   (a) Consolidated Balance Sheet - Liabilities and Shareholders' Investment
       as of September 30, 1995 and December 31, 1994 (In thousands except
       share amounts) (Unaudited)

                                                September 30,   December 31,
                                                         1995           1994
                                                -------------   ------------
   Current Liabilities:
    Notes payable                                  $   49,999     $   45,953
    Accounts payable                                   45,931         38,594
    Accrued payroll and employee benefits              32,030         33,085
    Accrued and current deferred income taxes          26,555         29,175
    Accrued installation and warranty expenses         19,190         16,545
    Customer deposits                                  10,265         11,115
    Other accrued expenses                             73,467         70,884
    Due to parent company                              22,562         13,999
                                                   ----------     ----------
                                                      279,999        259,350
                                                   ----------     ----------
   Deferred Income Taxes                               18,042         21,347
                                                   ----------     ----------
   Other Deferred Items                                23,657         19,261
                                                   ----------     ----------
   Long-term Obligations:
    Senior obligations, including $140,000 due
     to parent company                                210,000        210,000
    Subordinated obligations, including $284
     and $1,334 due to parent company (Note 4)        119,174         38,196
    Other                                              14,078         15,363
                                                   ----------     ----------
                                                      343,252        263,559
                                                   ----------     ----------
   Minority Interest                                   26,283          7,637
                                                   ----------     ----------
   Shareholders' Investment (Note 6):
    Common stock, $.10 par value, 125,000,000
     shares authorized; 73,813,577 and 48,156,101
     shares issued                                      7,381          4,816
    Capital in excess of par value                    245,138        233,765
    Retained earnings                                 270,054        212,584
    Treasury stock at cost, 824,737 and
     683,742 shares                                   (10,746)       (12,736)
    Cumulative translation adjustment                   4,575          1,991
    Net unrealized gain on available-for-sale
     investments                                        1,358            343
                                                   ----------     ----------
                                                      517,760        440,763
                                                   ----------     ----------
                                                   $1,208,993     $1,011,917
                                                   ==========     ==========

   The accompanying notes are an integral part of these consolidated financial
   statements.

                                        3PAGE
<PAGE>

                                                                     FORM 10-Q
                                                            September 30, 1995
                         THERMO INSTRUMENT SYSTEMS INC.

   (b) Consolidated Statement of Income for the three months ended
       September 30, 1995 and October 1, 1994 (In thousands except per
       share amounts) (Unaudited)
                                                       Three Months Ended
                                                   --------------------------
                                                   September 30,   October 1,
                                                            1995         1994
                                                   -------------   ----------

   Revenues                                             $193,899     $161,580
                                                        --------     --------
   Costs and Expenses:
    Cost of revenues                                     100,364       84,015
    Selling, general and administrative expenses          56,112       44,325
    Research and development expenses                     13,908       10,998
                                                        --------     --------
                                                         170,384      139,338
                                                        --------     --------

   Operating Income                                       23,515       22,242

   Interest Income                                         3,776        1,467
   Interest Expense (includes $1,418 and $1,344
    to parent company)                                    (4,490)      (3,833)
   Gain on Issuance of Stock by Subsidiaries (Note 3)      9,333        3,284
                                                        --------     --------
   Income from Continuing Operations Before
    Provision for Income Taxes and Minority
    Interest Expense                                      32,134       23,160
   Provision for Income Taxes                              9,850        8,617
   Minority Interest Expense                                 403           11
                                                        --------     --------
   Income from Continuing Operations                      21,881       14,532
   Income from Discontinued Operations (less applicable
    income taxes of $468 in 1994) (Note 5)                     -          572
                                                        --------     --------
   Net Income                                           $ 21,881     $ 15,104
                                                        ========     ========
   Earnings per Share from Continuing Operations:
    Primary                                             $    .30     $    .21
                                                        ========     ========
    Fully diluted                                       $    .27     $    .19
                                                        ========     ========
   Earnings per Share:
    Primary                                             $    .30     $    .21
                                                        ========     ========
    Fully diluted                                       $    .27     $    .20
                                                        ========     ========
   Weighted Average Shares:
    Primary                                               72,904       70,731
                                                        ========     ========
    Fully diluted                                         85,445       84,881
                                                        ========     ========
   The accompanying notes are an integral part of these consolidated financial
   statements.


                                        4PAGE
<PAGE>

                                                                     FORM 10-Q
                                                            September 30, 1995
                         THERMO INSTRUMENT SYSTEMS INC.

   (b) Consolidated Statement of Income for the nine months ended
       September 30, 1995 and October 1, 1994 (In thousands except per
       share amounts) (Unaudited)
                                                       Nine Months Ended
                                                  --------------------------
                                                  September 30,   October 1,
                                                           1995         1994
                                                  -------------   ----------

   Revenues                                            $552,587     $471,782
                                                       --------     --------
   Costs and Expenses:
    Cost of revenues                                    283,222      242,760
    Selling, general and administrative expenses        157,597      125,895
    Research and development expenses                    40,098       31,418
                                                       --------     --------
                                                        480,917      400,073
                                                       --------     --------

   Operating Income                                      71,670       71,709

   Interest Income                                        9,030        4,205
   Interest Expense (includes $4,199 and $4,048
    to parent company)                                  (12,187)     (11,923)
   Gain on Issuance of Stock by Subsidiaries (Note 3)    18,878        3,284
   Gain on Sale of Related Party Investments                  -        2,000
                                                       --------     --------
   Income from Continuing Operations Before
    Provision for Income Taxes and Minority
    Interest Expense                                     87,391       69,275
   Provision for Income Taxes                            29,104       28,692
   Minority Interest Expense                                819           11
                                                       --------     --------
   Income from Continuing Operations                     57,468       40,572
   Income from Discontinued Operations (less applicable
    income taxes of $1,118 in 1994) (Note 5)                  2        1,468
                                                       --------     --------
   Net Income                                          $ 57,470     $ 42,040
                                                       ========     ========
   Earnings per Share from Continuing Operations:
    Primary                                            $    .80     $    .58
                                                       ========     ========
    Fully diluted                                      $    .72     $    .53
                                                       ========     ========
   Earnings per Share:
    Primary                                            $    .80     $    .60
                                                       ========     ========
    Fully diluted                                      $    .72     $    .55
                                                       ========     ========
   Weighted Average Shares:
    Primary                                              72,220       70,348
                                                       ========     ========
    Fully diluted                                        85,359       84,865
                                                       ========     ========
   The accompanying notes are an integral part of these consolidated financial
   statements.

                                        5PAGE
<PAGE>

                                                                     FORM 10-Q
                                                            September 30, 1995
                         THERMO INSTRUMENT SYSTEMS INC.

   (c) Consolidated Statement of Cash Flows for the nine months ended
       September 30, 1995 and October 1, 1994 (In thousands) (Unaudited)

                                                      Nine Months Ended
                                                 ---------------------------
                                                 September 30,    October 1,
                                                          1995          1994
                                                 -------------    ----------
   Operating Activities:
    Net income                                       $  57,470     $  42,040
    Adjustments to reconcile net income to net cash
     provided by operating activities:
      Depreciation and amortization                     18,344        17,653
      Provision for losses on accounts receivable        1,486           363
      Gain on issuance of stock by
       subsidiaries (Note 3)                           (18,878)       (3,284)
      Gain on sale of related party investments              -        (2,000)
      Minority interest expense                            819            11
      Increase (decrease) in deferred income taxes          70            (3)
      Other noncash expenses                             2,357           596
      Changes in current accounts, excluding
       the effects of acquisitions:
        Accounts receivable                             (4,593)        5,330
        Inventories                                     (9,861)       (3,305)
        Other current assets                             1,196          (341)
        Accounts payable                                 6,021            28
        Other current liabilities                      (24,357)      (18,480)
      Other                                                  3          (105)
                                                     ---------     ---------
         Net cash provided by operating activities      30,077        38,503
                                                     ---------     ---------
   Investing Activities:
    Acquisitions, net of cash acquired (Note 2)        (46,448)     (100,940)
    Proceeds from sale of services
     businesses (Note 5)                                34,267             -
    Purchases of available-for-sale investments              -       (18,250)
    Proceeds from sale and maturities of
     available-for-sale investments                     13,000        11,000
    Purchases of property, plant and equipment          (7,459)       (5,544)
    Other                                                2,065         1,915
                                                     ---------     ---------
         Net cash used in investing activities          (4,575)     (111,819)
                                                     ---------     ---------
   Financing Activities:
    Net proceeds from issuance of Company and
     subsidiaries' common stock (Note 3)                37,630         7,175
    Proceeds from issuance of long-term
     obligations (Note 4)                               93,994             -
    Proceeds from issuance of obligations to parent
     company (Note 2)                                   15,000             -
    Repayment of long-term obligations                  (1,060)       (7,632)
    Repayment of obligations to parent
     company (Note 2)                                  (15,000)            -
                                                     ---------     ---------

         Net cash provided by (used in)
          financing activities                       $ 130,564     $    (457)
                                                     ---------     ---------

                                        6PAGE
<PAGE>

                                                                     FORM 10-Q
                                                            September 30, 1995
                         THERMO INSTRUMENT SYSTEMS INC.


  (c) Consolidated Statement of Cash Flows for the nine months ended
      September 30, 1995 and October 1, 1994 (In thousands) (Unaudited)
      (continued)

                                                      Nine Months Ended
                                                ---------------------------
                                                September 30,    October 1,
                                                         1995          1994
                                                -------------    ----------

  Exchange Rate Effect on Cash                       $   1,174    $     921
                                                     ---------    ---------
  Increase (Decrease) in Cash and Cash Equivalents     157,240      (72,852)
  Cash and Cash Equivalents at Beginning of Period     152,933      177,442
                                                     ---------    ---------
  Cash and Cash Equivalents at End of Period         $ 310,173    $ 104,590
                                                     =========    =========
  Cash Paid For:
    Interest                                         $  12,322    $  13,626
    Income taxes                                     $  29,119    $  20,930

  Noncash Financing Activities:
    Conversions of convertible obligations           $  15,272    $  11,292


  The accompanying notes are an integral part of these consolidated financial
  statements.















                                        7PAGE
<PAGE>

                                                                     FORM 10-Q
                                                            September 30, 1995
                         THERMO INSTRUMENT SYSTEMS INC.
 

   (d) Notes to Consolidated Financial Statements - September 30, 1995

   1.   General

        The interim consolidated financial statements presented have been
   prepared by Thermo Instrument Systems Inc. (the Company) without audit and,
   in the opinion of management, reflect all adjustments of a normal recurring
   nature necessary for a fair statement of (a) the results of operations for
   the three- and nine-month periods ended September 30, 1995 and October 1,
   1994, (b) the financial position at September 30, 1995, and (c) the cash
   flows for the nine-month periods ended September 30, 1995 and October 1,
   1994. Interim results are not necessarily indicative of results for a full
   year.

        The consolidated balance sheet presented as of December 31, 1994, has
   been derived from the consolidated financial statements that have been
   audited by the Company's independent public accountants. The consolidated
   financial statements and notes are presented as permitted by Form 10-Q and
   do not contain certain information included in the annual financial
   statements and notes of the Company. The consolidated financial statements
   and notes included herein should be read in conjunction with the financial
   statements and notes included in the Company's Annual Report on Form 10-K
   for the fiscal year ended December 31, 1994, filed with the Securities and
   Exchange Commission.


   2.   Acquisition

        In May 1995, the Company's ThermoSpectra Corporation (ThermoSpectra)
   subsidiary acquired Gould Instrument Systems, Inc. (GIS) for $25.7 million
   in cash, which includes the repayment of $6.0 million of bank debt. To
   partially finance the acquisition of GIS, ThermoSpectra borrowed $15.0
   million from Thermo Electron Corporation (Thermo Electron) pursuant to a
   promissory note due May 1996. This note was repaid in August 1995 with
   proceeds from ThermoSpectra's initial public offering of common stock 
   (Note 3). GIS develops, manufactures, and sells data acquisition systems,
   high-performance oscillographic recorders, and digital storage
   oscilloscopes for industrial, medical, scientific, and government
   applications.

        This acquisition has been accounted for using the purchase method of
   accounting and GIS's results of operations have been included in the
   accompanying financial statements from the date of acquisition. The cost of
   this acquisition exceeded the estimated fair value of the acquired net
   assets by $11.6 million, which is being amortized over 40 years. Allocation
   of the purchase price for this acquisition was based on an estimate of the
   fair value of the net assets acquired and is subject to adjustment. Pro
   forma data is not presented since this acquisition was not material to the
   Company's results of operations or financial position.



                                        8PAGE
<PAGE>

                                                                     FORM 10-Q
                                                            September 30, 1995
                         THERMO INSTRUMENT SYSTEMS INC.


   (d) Notes to Consolidated Financial Statements - September 30, 1995
       (continued)

   3.   Transactions in Stock of Subsidiaries

        In March 1995, the Company's wholly owned Thermo BioAnalysis
   Corporation (Thermo BioAnalysis) subsidiary sold 700,000 shares of its
   common stock in a private placement at $10.00 per share for net proceeds of
   $6.5 million, resulting in a gain of $4.7 million. In April 1995, Thermo
   BioAnalysis sold 901,500 shares of its common stock in a private placement
   at $10.00 per share for net proceeds of $8.4 million, resulting in a gain
   of $4.8 million. Following the private placements, the Company owned 80% of
   Thermo BioAnalysis' outstanding common stock. Thermo BioAnalysis
   specializes in capillary electrophoresis and matrix-assisted laser
   desorption/ionization time-of-flight mass spectrometry for the analytical
   biochemistry and biopharmaceutical markets, as well as radiation detection
   and monitoring and nuclear health physics.

        In August 1995, ThermoSpectra sold 1,725,000 shares of its common
   stock in an initial public offering at $14.00 per share for net proceeds of
   $21.9 million, resulting in a gain of $9.3 million. In October 1995,
   ThermoSpectra sold an additional 202,000 shares of its common stock in a
   private placement at $15.72 per share for net proceeds of $3.0 million.
   Following the offerings, the Company owned 72% of ThermoSpectra's
   outstanding common stock.


   4.   Subsidiary Debenture Offering

        In August 1995, the Company's wholly owned ThermoQuest Corporation
   (ThermoQuest) subsidiary issued and sold $96.3 million principal amount of
   5% subordinated convertible debentures due 2000. The debentures will be
   convertible into shares of ThermoQuest's common stock at any time after the
   later of (1) 180 days after the date of the closing of ThermoQuest's
   initial public offering of common stock or (2) the date of effectiveness
   under the Securities Act of 1933 of a registration statement covering the
   resale of shares of ThermoQuest's common stock issuable upon conversion of
   the debentures, and prior to redemption and maturity. The conversion price
   of the debentures will be set on the date of the closing of ThermoQuest's
   initial public offering of common stock. The conversion price will be equal
   to 110% of the initial public offering price of ThermoQuest common stock.
   If ThermoQuest's initial public offering has not occurred by August 3,
   1996, this percentage will decrease by 2.5% on such date and on each
   anniversary of such date prior to ThermoQuest's initial public offering.
   If ThermoQuest's initial public offering has not occurred by August 1,
   1996, the rate of interest borne by the debentures will increase by 0.5% on
   such date and on each anniversary of such date prior to ThermoQuest's
   initial public offering. The debentures are guaranteed on a subordinated
   basis by Thermo Electron. The Company has agreed to reimburse Thermo
   Electron in the event Thermo Electron is required to make a payment under
   the guarantee.


                                        9PAGE
<PAGE>

                                                                     FORM 10-Q
                                                            September 30, 1995
                         THERMO INSTRUMENT SYSTEMS INC.


   (d) Notes to Consolidated Financial Statements - September 30, 1995
       (continued)

   5.   Discontinued Operations

        Effective April 2, 1995, the Company and Thermo Process Systems Inc.
   (Thermo Process) dissolved their Thermo Terra Tech joint venture. Thermo
   Process then purchased the services businesses formerly operated by the
   joint venture from the Company for $34.3 million in cash. The Company owned
   49% of the joint venture and accounted for its interest in the joint
   venture using the equity method. Prior to the joint venture's formation on
   April 2, 1994, the Company's services businesses comprised the Company's
   Services segment and were consolidated in the Company's financial
   statements. The sale of the businesses to Thermo Process represents the
   Company's disposal of the operations that comprised its Services segment.
   Accordingly, the operating results of the Company's Services segment for
   the three-month period ended April 2, 1994, and the equity in the income of
   the joint venture recorded by the Company are classified as "Income from
   discontinued operations" in the accompanying statements of income. Revenues
   from the Company's Services segment for the three-month period ended April
   2, 1994 were $12.2 million.


   6.   Stock Split

        In February 1995, the Company declared a three-for-two stock split in
   the form of a 50% stock dividend that was distributed on April 14, 1995, to
   shareholders of record as of March 31, 1995. All weighted average share and
   per share amounts have been restated to reflect the stock split.


   7.   Subsequent Event

        In October 1995, the Company's wholly owned Thermo Optek Corporation
   (Thermo Optek) subsidiary issued and sold $96.3 million principal amount of
   5% subordinated convertible debentures due 2000. The debentures will be
   convertible into shares of Thermo Optek's common stock at any time after
   the later of (1) 180 days after the date of the closing of Thermo Optek's
   initial public offering of common stock or (2) the date of effectiveness
   under the Securities Act of 1933 of a registration statement covering the
   resale of shares of Thermo Optek's common stock issuable upon conversion of
   the debentures, and prior to redemption and maturity. The conversion price
   of the debentures will be set on the date of the closing of Thermo Optek's
   initial public offering of common stock. The conversion price will be equal
   to 110% of the initial public offering price of Thermo Optek common stock.
   If Thermo Optek's initial public offering has not occurred by October 12,
   1996, this percentage will decrease by 2.5% on such date and on each
   anniversary of such date prior to Thermo Optek's initial public offering.



                                       10PAGE
<PAGE>

                                                                     FORM 10-Q
                                                            September 30, 1995
                         THERMO INSTRUMENT SYSTEMS INC.


   (d) Notes to Consolidated Financial Statements - September 30, 1995
       (continued)

   7.   Subsequent Event (continued)

   If Thermo Optek's initial public offering has not occurred by October 1,
   1996, the rate of interest borne by the debentures will increase by 0.5% on
   such date and on each anniversary of such date prior to Thermo Optek's
   initial public offering. The debentures are guaranteed on a subordinated
   basis by Thermo Electron. The Company has agreed to reimburse Thermo
   Electron in the event Thermo Electron is require to make a payment under
   the guarantee.


   Item 2 - Management's Discussion and Analysis of Financial Condition and
    Results of Operations

   Results of Operations

   Third Quarter 1995 Compared With Third Quarter 1994
   ---------------------------------------------------

        Revenues increased $32.3 million, or 20%, to $193.9 million in the
   third quarter of 1995 from $161.6 million in the third quarter of 1994, due
   primarily to acquisitions, which included the Analytical Instruments
   Division of Baird Corporation in January 1995 and Gould Instrument Systems,
   Inc. (GIS) in May 1995. Acquisitions added revenues of $21.9 million in the
   third quarter of 1995. Revenues increased approximately $3.8 million as a
   result of the favorable effects of currency translation due to the decline
   in the value of the U.S. dollar relative to foreign currencies in countries
   where the Company operates. An increase in revenues from certain existing
   businesses was offset in part by a decline in revenues from the Company's
   air monitoring instruments subsidiary as most orders in response to Phases
   I and II of the Clean Air Act of 1990 have been completed.

        The gross profit margin remained unchanged at 48% in the third quarter
   of 1995 and 1994.

        Selling, general and administrative expenses as a percentage of
   revenues increased to 29% in the third quarter of 1995 from 27% in the
   third quarter of 1994, due primarily to higher costs as a percentage of
   revenues at acquired businesses and reduced revenues from the Company's air
   monitoring instruments subsidiary as discussed above. Research and
   development expenses as a percentage of revenues were 7.2% in 1995,
   compared with 6.8% in 1994. The increase is consistent with the Company's
   objective to develop and market new products.

        Interest income increased to $3.8 million in the third quarter of 1995
   from $1.5 million in the third quarter of 1994, primarily as a result of
   higher prevailing interest rates in 1995 compared with 1994, and interest
   income earned on the net proceeds from the issuance of $96.3 million
   principal amount of 5% subordinated convertible debentures by the Company's
   ThermoQuest Corporation (ThermoQuest) subsidiary in August 1995 (Note 4).
   Interest income also increased, to a lesser extent, as a result of interest

                                       11PAGE
<PAGE>

                                                                     FORM 10-Q
                                                            September 30, 1995
                         THERMO INSTRUMENT SYSTEMS INC.
 

   Item 2 - Management's Discussion and Analysis of Financial Condition and
   Results of Operations (continued)

   Third Quarter 1995 Compared With Third Quarter 1994 (continued)
   ---------------------------------------------------

   income earned on the net proceeds from the issuance of common stock by the
   Company's Thermo BioAnalysis Corporation (Thermo BioAnalysis) subsidiary in
   the first and second quarters of 1995 and by the Company's ThermoSpectra
   Corporation (ThermoSpectra) subsidiary in the third quarter of 1995 and the
   third and fourth quarter of 1994. The increase was offset in part by a
   reduction in cash as a result of the acquisitions of the Analytical
   Instruments Division of Baird Corporation in January 1995 and GIS in May
   1995. Interest expense increased to $4.5 million in 1995 from $3.8 million
   in 1994 due primarily to the issuance of subordinated convertible
   debentures by ThermoQuest in August 1995, offset in part by the conversion
   of a portion of the Company's 6 5/8% subordinated convertible debentures
   into common stock of the Company.

        The Company has adopted a strategy of spinning out certain of its
   businesses into separate subsidiaries and having these subsidiaries sell a
   minority interest to outside investors. The Company believes that this
   strategy provides additional motivation and incentives for the management
   of the subsidiary through the establishment of subsidiary-level stock
   option incentive programs, as well as capital to support the subsidiaries'
   growth. As a result of the sale of stock by subsidiaries, the Company
   recorded gains of $9.3 million in the third quarter of 1995 and $3.3
   million in the third quarter of 1994 (Note 3). Although the Company expects
   to continue this strategy in the future, its goal is to continue increasing
   operating income over the next few years so that gains generated through
   the sale of stock by its subsidiaries will represent a decreasing portion
   of net income. The size and timing of these transactions are dependent on
   market and other conditions that are beyond the Company's control.
   Accordingly, there can be no assurance that the Company will be able to
   realize gains from such transactions in the future.

        The effective tax rate decreased to 31% in the third quarter of 1995
   from 37% in the third quarter of 1994, due primarily to the higher
   nontaxable gain on the issuance of stock by subsidiary in 1995 compared
   with 1994. Excluding the impact of the gain on the issuance of stock by
   subsidiary in 1995 and 1994, the effective tax rates in 1995 and 1994
   exceeded the statutory federal income tax rate due to nondeductible
   amortization of cost in excess of net assets of acquired companies, the
   inability to provide a tax benefit on losses incurred at certain foreign
   subsidiaries, and the impact of state income taxes.


                                       12PAGE
<PAGE>

                                                                     FORM 10-Q
                                                            September 30, 1995
                         THERMO INSTRUMENT SYSTEMS INC.


   Item 2 - Management's Discussion and Analysis of Financial Condition and
   Results of Operations (continued)

   First Nine Months 1995 Compared With First Nine Months 1994
   -----------------------------------------------------------

        Revenues increased $80.8 million, or 17%, to $552.6 million in the
   first nine months of 1995 from $471.8 million in the first nine months of
   1994 due primarily to acquisitions, which included several businesses
   within the EnviroTech Measurements & Controls group of Baker Hughes
   Incorporated in March 1994, the Analytical Instruments Division of Baird
   Corporation in January 1995, and GIS in May 1995. Acquisitions added
   revenues of $68.2 million in the first nine months of 1995. Revenues
   increased approximately $19.5 million as a result of the favorable effects
   of currency translation due to the decline in the value of the U.S. dollar
   relative to foreign currencies in countries where the Company operates. An
   increase in revenues from certain existing businesses was more than offset
   by a decline in revenues from the Company's air monitoring instruments
   subsidiary due to the reasons discussed in the results of operations for
   the third quarter. Orders booked by the Company in the first nine months of
   1995 exceeded its shipments by $16.0 million.

        The gross profit margin remained unchanged at 49% in the first nine
   months of 1995 and 1994.

        Selling, general and administrative expenses as a percentage of
   revenues increased to 29% in the first nine months of 1995 from 27% in the
   first nine months of 1994 due to the reasons discussed in the results of
   operations for the third quarter. Research and development expenses as a
   percentage of revenues were 7.3% in 1995, compared with 6.7% in 1994. The
   increase is consistent with the Company's objective to develop and market
   new products.

        Interest income increased to $9.0 million in the first nine months of
   1995 from $4.2 million in the first nine months of 1994. Interest expense
   was $12.2 million in 1995, compared with $11.9 million in 1994. The reasons
   for the increases are the same as those discussed in the results of
   operations for the third quarter.

        As a result of the sale of stock by subsidiaries, the Company recorded
   gains of $18.9 million in the first nine months of 1995 and $3.3 million in
   the first nine months of 1994 (Note 3).

        The Company recorded a gain of $2.0 million in 1994 on the sale of a
   portion of its investment in Thermedics Inc. (Thermedics) subordinated
   convertible debentures. Thermedics is a majority-owned subsidiary of Thermo
   Electron Corporation (Thermo Electron).


                                       13PAGE
<PAGE>

                                                                     FORM 10-Q
                                                            September 30, 1995
                         THERMO INSTRUMENT SYSTEMS INC.
 

   Item 2 - Management's Discussion and Analysis of Financial Condition and
   Results of Operations (continued)

   First Nine Months 1995 Compared With First Nine Months 1994 (continued)
   -----------------------------------------------------------

        The effective tax rate decreased to 33% in the first nine months of
   1995 from 41% in the first nine months of 1994, due primarily to the higher
   nontaxable gains on the issuance of stock by subsidiaries in 1995 compared
   with 1994. Excluding the impact of the gains on the issuance of stock by
   the subsidiaries in 1995 and 1994, the effective tax rates in 1995 and 1994
   exceeded the statutory federal income tax rate due to the reasons discussed
   in the results of operations for the third quarter.

   Financial Condition

   Liquidity and Capital Resources
   -------------------------------

        Consolidated working capital was $411.8 million at September 30, 1995,
   compared with $230.3 million at December 31, 1994, an increase of $181.5
   million. Included in working capital are cash, cash equivalents, and
   available-for-sale investments of $314.6 million at September 30, 1995, and
   $168.9 million at December 31, 1994. Of the $314.6 million balance at
   September 30, 1995, $15.8 million was held by ThermoSpectra, $19.1 million
   by Thermo BioAnalysis, and $279.7 million by the Company and its wholly
   owned subsidiaries, including ThermoQuest and Thermo Optek Corporation.
   During the first nine months of 1995, $30.1 million of cash was provided by
   operating activities. Increases in accounts receivable and inventories of
   $4.6 million and $9.9 million, respectively, and a decrease in other
   current liabilities of $24.4 million was offset in part by an increase of
   $6.0 million in accounts payable and a decrease of $1.2 million in other
   current assets.

        The Company's investing activities used $4.6 million of cash in the
   first nine months of 1995. During the first nine months of 1995 the Company
   expended $46.4 million for acquisitions and $7.5 million for the purchase
   of property, plant and equipment. Additionally, during the first nine
   months of 1995, the Company and Thermo Process Systems Inc. (Thermo
   Process) dissolved their Thermo Terra Tech joint venture and the Company
   sold its services business formerly operated by the joint venture to Thermo
   Process for $34.3 million in cash. The Company also had proceeds of $13.0
   million from the sale of available-for-sale investments during the first
   nine months of 1995.

        The Company's financing activities provided $130.6 million of cash in
   the first nine months of 1995. In March and April 1995, Thermo BioAnalysis
   completed private placements of its common stock for net proceeds of $14.9
   million (Note 3). In August 1995, ThermoSpectra sold shares of its common
   stock in an initial public offering for net proceeds of $21.9 million (Note
   3). In August 1995, ThermoQuest issued and sold $96.3 million principal
   amount of 5% subordinated convertible debentures due 2000 for net proceeds
   of approximately $94.0 million.

                                       14PAGE
<PAGE>

                                                                     FORM 10-Q
                                                            September 30, 1995
                         THERMO INSTRUMENT SYSTEMS INC.


   Item 2 - Management's Discussion and Analysis of Financial Condition and
   Results of Operations (continued)

   Liquidity and Capital Resources (continued)
   -------------------------------

        In October 1995, Thermo Optek issued and sold $96.3 million principal
   amount of 5% subordinated convertible debentures due 2000. Also in October
   1995, ThermoSpectra sold shares of its common stock in a private placement
   for net proceeds of approximately $3.0 million (Note 3).

        During the remainder of 1995, the Company plans to make expenditures
   of approximately $4.0 million for property, plant and equipment. The
   Company believes that its existing resources are sufficient to meet the
   capital requirements of its existing operations for the foreseeable future.
   The Company has historically complemented internal development with
   acquisitions of businesses or technologies that extend the Company's  
   presence in current markets or provide opportunities to enter and compete
   effectively in new markets. The Company will consider making acquisitions
   of such companies, product lines, or technologies that are consistent with
   its plans for strategic growth. On March 1, 1995, the Company entered into
   an agreement with Fisons plc (Fisons) to acquire the Scientific Instruments
   Division (the Division) of Fisons for approximately 202 million British  
   pounds sterling. On April 13, 1995, the Company announced that it had
   received a "second request" for information regarding the transaction from
   the U.S. Federal Trade Commission (FTC). The FTC and competition regulatory
   authorities in certain other countries have expressed concern that
   completion of the transaction in its original form would affect competition
   in markets for certain product lines to be acquired by the Company, in
   particular the market for mass spectrometers. On November 1, 1995, the
   Company and Fisons entered into an amendment to the agreement. Among other
   things, the amendment extends the termination date of the agreement to
   March 31, 1996, and establishes a framework for modifying the transaction
   to satisfy the concerns of the FTC and other competition regulatory
   authorities. In addition to receipt of required antitrust regulatory
   approvals, completion of the transaction is subject to consent of certain
   third parties, and the satisfaction of other customary closing conditions.
   Thermo Electron has guaranteed the obligations of the Company under the
   agreement. The purchase price is subject to a post-closing adjustment based
   on the net asset value of the Division as of the closing date.

        On July 20, 1995, Thermo Electron announced that it had signed a
   letter of intent to acquire Analytical Technology, Inc. (ATI), a
   Boston-based manufacturer and marketer of analytical instruments used
   primarily for testing and analysis, both in laboratories and in
   manufacturing. ATI operates through two divisions: laboratories and
   analytical instruments. Upon completion of the acquisition, it is
   anticipated that the Company would acquire the analytical instrument
   products division, which had revenues of approximately $78 million in 1994.
   ATI's analytical instrument products include spectrometers, chromatographs,

                                       15PAGE
<PAGE>

                                                                     FORM 10-Q
                                                            September 30, 1995
                         THERMO INSTRUMENT SYSTEMS INC.


   Item 2 - Management's Discussion and Analysis of Financial Condition and
   Results of Operations (continued)

   Liquidity and Capital Resources (continued)
   -------------------------------

   and other instruments that determine molecular and elemental composition.
   The completion of the acquisition is subject to several conditions,
   including execution of a mutually satisfactory acquisition agreement,
   obtaining applicable regulatory approvals and other customary conditions to
   closing.

        The Company intends to fund the purchase price of these acquisitions
   from available cash and through borrowings from Thermo Electron. Borrowings
   from Thermo Electron will be at prevailing market rates at the time funds
   are advanced.


   PART II - Other Information

   Item 6 - Exhibits

        See Exhibit Index on the page immediately preceding exhibits.





















                                       16PAGE
<PAGE>

                                                                     FORM 10-Q
                                                            September 30, 1995
                         THERMO INSTRUMENT SYSTEMS INC.


                                   SIGNATURES


        Pursuant to the requirements of the Securities Exchange Act of 1934,
   the Registrant has duly caused this report to be signed on its behalf by
   the undersigned thereunto duly authorized as of the 7th day of November
   1995.

                                        THERMO INSTRUMENT SYSTEMS INC.



                                         Paul F. Kelleher
                                        --------------------------------
                                        Paul F. Kelleher
                                        Chief Accounting Officer



                                         John N. Hatsopoulos
                                        --------------------------------
                                        John N. Hatsopoulos
                                        Chief Financial Officer






















                                       17PAGE
<PAGE>

                                                                     FORM 10-Q
                                                            September 30, 1995
                         THERMO INSTRUMENT SYSTEMS INC.


                                  EXHIBIT INDEX


   Exhibit
   Number                            Document                            Page
   -------        --------------------------------------------------     ----

      2           Amendment No. 2 to Asset and Stock Purchase
                  Agreement dated as of November 1, 1995 among the
                  Registrant, Thermo Electron Corporation, and
                  Fisons plc. Pursuant to Item 601(b)(2) of
                  Regulation S-K, schedules to this Agreement have
                  been omitted. The Company hereby undertakes to
                  furnish supplementally a copy of such schedules
                  to the Commission upon request.

     11           Statement re: Computation of earnings per share.

     27           Financial Data Schedule.
















                                                                EXHIBIT 2

              AMENDMENT NO. 2 TO ASSET AND STOCK PURCHASE AGREEMENT

             This Amendment No. 2 to the Asset and Stock Purchase
        Agreement dated as of March 1, 1995, as previously amended (the
        "Agreement"), between Fisons plc, a company organized under the
        laws of England (the "Seller"), Thermo Instrument Systems Inc., a
        corporation organized under the laws of Delaware, U.S.A. (the
        "Buyer"), and Thermo Electron Corporation, a corporation
        organized under the laws of Delaware, U.S.A. (the "Parent"), is
        made as of the 1st day of November, 1995.  The Buyer and the
        Parent are sometimes collectively referred to herein as the
        "Thermo Parties".  Terms used but not otherwise defined herein
        shall have the meanings ascribed to them in the Agreement.

             WHEREAS, the parties acknowledge that certain conditions to
        closing of the transactions contemplated by the Agreement will
        not be satisfied unless the Thermo Parties and the Seller make
        certain undertakings with respect to the operation and sale of
        certain product lines included within the Business, including
        those described on Exhibit A attached hereto; and

             WHEREAS, to address the concerns of the U.S. Federal Trade
        Commission (the "FTC"), the Parent and the Seller intend to enter
        into a consent order (the "Consent Order") with the FTC and an
        Agreement to Hold Separate (the "Hold Separate") under which the
        Parent will agree, inter alia, to hold certain product lines,
        including those described on Exhibit A, separate from the
        remainder of the Business and the other businesses of the Thermo
        Parties and to sell such product lines to an unaffiliated third
        party within a certain period of time after the Closing; and

             WHEREAS, to address the concerns of the United Kingdom
        Director General of Fair Trading ("OFT") and the German
        Bundeskartellamt (the "FCO"), the Thermo Parties and the Seller
        may make similar undertakings with respect to certain product
        lines included in the Business (collectively, the "European
        Undertakings"); and

             WHEREAS, compliance by the Thermo Parties with the Consent
        Order and with the European Undertakings and the operation of the
        product lines subject to the Consent Order and the European
        Undertakings by the Thermo Parties prior to their sale may result
        in costs to the Thermo Parties that would not have been incurred
        if such product lines had been treated, instead, as Excluded
        Assets; and

             WHEREAS, the parties desire to put the Thermo Parties, to
        the extent possible, in the same position they would have been in
        had such product lines been treated as Excluded Assets, had the
        Purchase Price been reduced by the value of such product lines,
PAGE
<PAGE>


        and had the Thermo Parties not been required to comply with the
        Consent Order and the European Undertakings;

             NOW, THEREFORE, the parties agree as follows:

             1.   Operation of Excluded Product Lines.

                  (a)  Sale of Excluded Product Lines.  The Seller and
        the Thermo Parties shall cooperate in the process of (i) defining
        (to the extent not specified in Exhibit A) the assets and
        liabilities that comprise the Excluded Product Lines (as such
        term is defined in Section 2(c) of this Amendment) and allocating
        employees to the Excluded Product Lines, (ii) preparing one or
        more selling memoranda and other documents necessary to provide
        prospective purchasers with information about the Excluded
        Product Lines, (iii) locating prospective purchasers and
        discussing  the Excluded Product Lines with prospective
        purchasers, (iv) facilitating due diligence review of the
        Excluded Product Lines by prospective purchasers, (v) negotiating
        purchase and sale agreements with prospective purchasers and (vi)
        conveying the assets and liabilities of the Excluded Product
        Lines to purchasers and otherwise facilitating an orderly
        transfer of the Excluded Product Lines to the purchasers thereof.
        Notwithstanding anything to the contrary in Exhibit A, the
        parties agree that the following employees (the "Excluded Product
        Line Employees") will be allocated to the Excluded Product Lines:
        (A) any employees whose responsibilities involve primarily the
        support of the Excluded Product Lines and (B) a percentage of the
        administrative (including, without limitation, clerical, human
        resources and accounting) employees at any Shared Building (as
        defined in Section 1(d)) equal to the ratio of the revenues
        generated from sales of Excluded Product Line products from such
        Shared Building to the revenues generated from sales of all
        products from such Shared Building.

             Notwithstanding the foregoing, the parties agree and
        acknowledge that the Seller shall bear primary responsibility for
        the sale of the Excluded Product Lines.  In furtherance of, but
        without limiting, the foregoing, the Seller shall be responsible,
        at its expense, for drafting and negotiating purchase and sale
        agreements with prospective purchasers, preparing exhibits and
        schedules to such agreements, providing representations and
        warranties and indemnifications to such purchasers, ensuring
        compliance of such transactions with applicable laws and
        preparing any periodic reports relating to compliance with the
        Consent Order, the Hold Separate or the European Undertakings
        that are required to be submitted to the FTC under the Consent
        Order or to the OFT or FCO under the European Undertakings,
        including applications for divestiture.  Such reports shall be
        provided to Buyer in sufficient time that Buyer has a reasonable
        opportunity to review and comment thereon prior to the time they
        are to be submitted.  The Thermo Parties shall have no liability
        or obligation to any purchaser of the Excluded Product Lines


                                        2PAGE
<PAGE>


        except for the obligations of the Thermo Parties described in the
        first sentence of this Section 1(a) or to the extent such
        liability results from the gross negligence or willful misconduct
        of the Thermo Parties, their employees, agents or
        representatives.

             All consideration paid by purchasers of the Excluded Product
        Lines shall be paid directly to the Buyer at the closing of any
        sale of Excluded Product Lines.  Within five days after all of
        the Excluded Product Lines have been sold, the Seller shall pay
        to the Buyer interest from the Closing Date at the rate of the
        one-month London Interbank Offered Rate in effect from time to
        time as reported in The Wall Street Journal ("LIBOR") plus 1% on
        the Excluded Product Line Value (as such term is defined in
        Section 2(c) of this Amendment) as reduced from time to time upon
        the sale of Excluded Product Lines and the receipt by the Buyer
        of the cash proceeds from such sales as described in the
        preceding sentence.  Interest shall be computed for all purposes
        of this Amendment and the Agreement on a daily basis, with a year
        being deemed to represent 365 days.

                  (b)  Management of Excluded Product Lines.  The
        Excluded Product Lines shall be managed and operated as provided
        in the Hold Separate and the European Undertakings by the Manager
        and Management Committee ("Manager" and "Management Committee"
        being used herein as defined in the Hold Separate.)  Each of
        Seller and the Thermo Parties will direct their respective
        representatives on the Management Committee to act so that the
        Excluded Product Lines comply with applicable laws during the
        period they are subject to the Hold Separate; however, as the
        party controlling the Management Committee, the Seller shall be
        responsible for ensuring such compliance.  The Thermo Parties
        shall be provided promptly with any financial, tax or other
        information regarding the Excluded Product Lines as either of the
        Thermo Parties shall reasonably request, subject to any
        limitations on access to such information set forth in the
        Consent Order, the Hold Separate or the European Undertakings.  

                  (c)  Intellectual Property.  The parties acknowledge
        that there may be certain Intellectual Property that is used in
        the operation of both the Business other than the business of the
        Excluded Product Lines (the "Retained Businesses") and the
        business of the Excluded Product Lines ("Shared Intellectual
        Property").  Title to any such Shared Intellectual Property shall
         be retained by the Buyer and shall not be transferred to any
        purchaser of the Excluded Product Lines.  However, Buyer shall
        grant a license to any purchaser of Excluded Product Lines to use
        any Shared Intellectual Property used by such Excluded Product
        Lines, but only to the extent the Buyer has the legal right to
        grant such a license.  Any such license, to the extent legally
        possible, shall be perpetual, royalty-free and non-exclusive,
        shall be transferable only to those of such purchaser's
        suppliers, distributors or representatives who must obtain such a


                                        3PAGE
<PAGE>

        license to legally make or sell products on behalf of such
        purchasers or those of such purchaser's customers who must obtain
        such a license to legally use such purchaser's products or to a
        subsequent purchaser of a business of the Excluded Product Lines,
        and shall be on such other terms and conditions as shall be
        reasonably acceptable to the Buyer.  Notwithstanding the
        foregoing, neither of the Thermo Parties shall be obligated to
        make any payment to any third parties or incur any out-of-pocket
        expenses to grant any such license unless the Thermo Party is
        reimbursed for such expense.  No such license shall apply to
        improvements to Shared Intellectual Property developed by Buyer
        after the Closing and the Thermo Parties will not have a license
        over or title to such improvements developed by the purchaser or
        in the operation of the business of the Excluded Product Lines
        after the Closing.

                  (d)  Ownership for Tax Purposes.  The Thermo Parties
        and the Seller agree that, notwithstanding the Consent Order, the
        Hold Separate or European Undertakings and any provision of the
        Agreement or this Amendment, the Thermo Parties shall for Tax
        purposes be treated as the legal owners of, and legally liable
        for Taxes with respect to, each of the Excluded Product Lines
        until the Thermo Parties have sold such Excluded Product Lines,
        unless the Thermo Parties shall have received a binding written
        determination by the applicable Taxing authorities, or shall have
        received an actual refund of Taxes paid, based upon a
        determination by the applicable Taxing authorities that the
        Thermo Parties are not legal owners of, and are not legally
        liable for Taxes with respect to, such Excluded Product Lines.

        `    2.   Indemnification.

                  (a)  By the Seller.  Notwithstanding anything to the
        contrary in the Agreement, including, without limitation, Section
        11.3 thereof, the Seller shall indemnify the Thermo Parties for
        all (i) Divestiture Costs (as defined in subparagraph (c) below),
        (ii) Negative Cashflow (as defined in subparagraph (c) below),
        (iii) Sale Price Shortfall (as defined in subparagraph (c)
        below), (iv) Excluded Product Line Taxes (as defined in
        subparagraph (c) below) except to the extent otherwise
        indemnified under this Section 2(a), (v) Excluded Product Line
        Losses (as defined in subparagraph (c) below), (vi) any Losses
        resulting from any failure by the Seller to comply with the
        Consent Order, the Hold Separate or the European Undertakings or
        from the failure of the Excluded Product Lines to be managed or
        operated in a manner that complies with the Consent Order, the
        Hold Separate or the European Undertakings or (vii) any
        Transaction Taxes or VAT applicable to the sale of the Excluded
        Product Lines to the Buyer under the Agreement.

                  (b)  By the Thermo Parties.  The Thermo Parties,
        jointly and severally, shall pay the Seller an amount equal to
        (i) Positive Cashflow (as defined in subparagraph (c) below),


                                        4PAGE
<PAGE>


        (ii) 50% of all Sale Price Excess (as defined in subparagraph (c)
        below), (iii) Seller's Disposition Costs ( as defined in
        subparagraph (c) below), but only up to an amount equal to the
        excess of the Sale Price over the Excluded Product Line Value,
        (iv) Excluded Product Line Tax Benefits (as defined in
        subparagraph (c) below) except to the extent otherwise
        indemnified under this Section 2(b), and (v) any Losses resulting
        from any failure by the Thermo Parties to comply with the Consent
        Order, the Hold Separate or the European Undertakings.

                  (c)  Definitions.

                  (i)  "Divestiture Costs"  means, except to the extent
             otherwise paid or reimbursed to the Thermo Parties, (A) the
             reasonable fees and expenses of any legal, tax, accounting
             or other advisors retained by the Thermo Parties, and the
             out-of-pocket expenses reasonably incurred by employees of
             the Thermo Parties, incurred in connection with selling the
             Excluded Product Lines or complying with any aspect of the
             Consent Order, the Hold Separate or the European
             Undertakings relating to the ownership, operation,
             maintenance or disposition of the Excluded Product Lines,
             (B) the fees and expenses of any trustee or other third
             party that the Thermo Parties are required under the Consent
             Order or the European Undertakings to retain for purposes of
             operating or selling the Excluded Product Lines, (C) the
             out-of-pocket expenses reasonably incurred by any employees
             of the Thermo Parties in providing corporate services
             (including, without limitation, legal, tax, accounting,
             treasury, and risk management services) to or for the
             benefit of the Excluded Product Lines, (D) Transaction
             Taxes, VAT, filing fees and similar costs relating to the
             disposition of the Excluded Product Lines, (E) any
             Redundancy Costs (as defined below), (F) any Licensing Costs
             (as defined below) and (F) the costs and expenses of any
             lessors or sublessors (and their advisors, including
             applicable VAT) in connection with obtaining the consents of
             any such lessors or sublessors to the assignment of any
             leases relating to properties occupied by the Excluded
             Product Lines upon the sale of the Excluded Product Lines as
             contemplated hereby, but only to the extent such costs and
             expenses are billed to the Thermo Parties.  Other fees and
             expenses relating to the Agreement and the closing of the
             transactions contemplated thereby, including the negotiation
             of this Amendment, the Consent Order, the Hold Separate and
             the European Undertakings, shall be paid in accordance with
             Section 13.3 of the Agreement.  It is understood that Seller
             is taking primary responsibility for the sale of the
             Excluded Product Lines and therefore the fees and expenses
             of the Thermo Parties relating to any such sale and
             described in clause (A) above should be limited to any
             necessary review of the legal, financial or other impact of
             such sale on the Thermo Parties.


                                        5PAGE
<PAGE>


                  (ii)  "Negative Cashflow"  means any cash invested in
             or loaned or advanced to any of the operations of the
             Excluded Product Lines by the Thermo Parties during the
             Interim Period (as defined below) except for any such
             investments, loans or advancements that are repaid prior to
             the end of the Interim Period.

                  (iii) "Excluded Product Line Taxes" means any and all
             losses, liabilities, obligations, damages, impositions,
             assessments, judgments, settlements, costs and expenses
             (including reasonable attorneys', accountants' and experts'
             fees and expenses and any applicable assessments of interest
             and penalties) with respect to the Tax liability of the
             Thermo Parties attributable to acquiring, owning, holding,
             operating or selling all or any part of the Excluded Product
             Lines related to any Tax period ending on or before the
             later of December 31, 1999 or the date upon which all of the
             Excluded Product Lines have been sold.  Excluded Product
             Line Taxes shall not include any Taxes actually or
             anticipated to be paid, incurred or accrued with respect to
             any taxable year ending after the later of December 31, 1999
             or the date upon which all of the Excluded Product Lines
             have been sold. The amount of Excluded Product Line Taxes
             shall be determined by computing (A) the amount of Taxes
             actually paid by the Thermo Parties and their affiliates
             (including the Excluded Product Lines), minus (B) the amount
             of Tax liability of the Thermo Parties and their affiliates
             determined as if the Thermo Parties had never acquired the
             Excluded Product Lines.  The amount of Excluded Product Line
             Taxes shall in no case be less than zero.

                  (iv)  "Excluded Product Line Losses"  means any Losses
             resulting from any Third Party Claim incurred by the Thermo
             Parties that arise from or relate to the ownership or
             operation of the Excluded Product Lines at any time, whether
             before or after the Closing Date, except to the extent such
             Losses result from the gross negligence or willful
             misconduct of the Thermo Parties, or their employees, agents
             or representatives.

                  (v)  "Excluded Product Line Tax Benefits" means any
             refunds of Taxes paid or the amount of the decrease, if any,
             in the amount of the Tax liability of the Thermo Parties and
             their affiliates attributable to acquiring, owning, holding,
             operating or selling all or any part of the Excluded Product
             Lines with respect to any Tax period ending on or before the
             later of December 31, 1999 or the date upon which all of the
             Excluded Product Lines have been sold.  Excluded Product
             Line Tax Benefits shall not include any reduction in Tax
             liability (or refunds) actually or anticipated to be
             received with respect to any taxable year ending after the
             later of December 31, 1999 or the date upon which all of the



                                        6PAGE
<PAGE>

             Excluded Product Lines have been sold. The amount of
             Excluded Product Line Tax Benefits shall be determined by
             computing (A) the amount of tax liability of the Thermo
             Parties and their affiliates determined as if the Thermo
             Parties had never acquired the Excluded Product Lines minus
             (B) the amount of taxes actually paid by the Thermo Parties
             and their affiliates (including the Excluded Product Lines).
             The amount of the Excluded Product Line Tax Benefits will in
             no case be less than zero.

                  (vi)  "Sale Price Shortfall" means the amount by which
             the Excluded Product Line Value exceeds the aggregate cash
             purchase price actually received by the Buyer at the
             closing(s) for all of the Excluded Product Lines (the "Sale
             Price").  Neither non-cash consideration nor any deferred
             consideration will be included in the calculation of Sale
             Price.

                  (vii)  "Sale Price Excess"  means the amount by which
             the Sale Price exceeds the sum of (A) the Excluded Product
             Line Value plus (B) Seller's Disposition Costs.  Neither
             non-cash consideration nor any deferred consideration will
             be included in the calculation of Sale Price.

                  (viii)  "Positive Cashflow"  means any cash
             distributed, loaned or advanced from the businesses of the
             Excluded Product Lines to the Thermo Parties or their
             respective subsidiaries or affiliates other than the
             businesses of the Excluded Product Lines, except for any
             such loans or advances that are repaid by the Thermo Parties
             prior to the end of the Interim Period.

                  (ix)  "Seller's Disposition Costs" means the reasonable
             fees and expenses of any legal, tax, accounting, investment
             banking or other advisors retained by the Seller in
             connection with the sale of the Excluded Product Lines, and
             the reasonable out-of-pocket expenses incurred by employees
             of the Seller in connection with the sale of the Excluded
             Product Lines.  Other fees and expenses relating to the
             Agreement and the closing of the transaction contemplated
             thereby, including the negotiation of this Amendment, the
             Consent Order, the Hold Separate and the European
             Undertakings, shall be paid in accordance with Section 13.3
             of the Agreement.

                  (x)  "Excluded Product Lines" means the product lines
             described on Exhibit A attached hereto and any other product
             lines included within the Business, the divestiture of which
             is required by the FTC, OFT or FCO as a condition to the
             approval by any of such entities of the transactions
             contemplated by the Agreement.




                                        7PAGE
<PAGE>


                  (xi) "Excluded Product Line Value" means

                  [Information ommitted, subject to request for
             confidential treatment.]

                  (xii)     "Redundancy Costs" means the costs of
             terminating the employment of any Excluded Product Line
             Employees that are not offered employment by the purchaser
             of the Excluded Product Line with which such Excluded
             Product Line Employees are associated.

                  (xiii)    "Licensing Costs" means the out-of-pocket
             costs incurred by the Thermo Parties as a result of any
             requirement under the Consent Order, the Hold Separate or
             the European Undertakings that the Thermo Parties (A)
             license to any third party any technology relating to a
             product included within the Retained Businesses, or (B)
             supply any such product to any third party on prescribed
             terms, except to the extent such costs are permitted to be
             recovered by the Thermo Parties under such license or supply
             arrangements.

                  (d)  Procedures for Indemnification.

                  (i)  The Seller shall indemnify the Thermo Parties for
             Divestiture Costs on a monthly basis within 30 days after
             receipt of a reasonably detailed description of the
             Divestiture Costs for which indemnification is sought.
             Seller shall provide to the Thermo Parties a reasonably
             detailed description of the Seller's Disposition Costs
             within 30 business days after completion of the sale of all
             of the Excluded Product Lines.

                  (ii)  The Seller shall indemnify the Buyer for any Sale
             Price Shortfall, or the Thermo Parties shall pay the Seller
             50% of any Sale Price Excess, as the case may be, and, to
             the extent provided in Section 2(b) of this Amendment, the
             Thermo Parties shall indemnify the Seller for Seller's
             Disposition Costs, within 30 business days after the last to
             occur of the Seller's receipt of the description of cash
             flow referred to in clause (iii) below, the Thermo Parties'
             receipt of the description of Seller's Disposition Costs
             referred to in clause (i) above and completion of the sale
             of all of the Excluded Product Lines.

                  (iii)  Within 40 business days after completion of the
             sale of all of the Excluded Product Lines, the Thermo
             Parties shall provide the Seller with a reasonably detailed
             description of any Negative Cashflow or Positive Cashflow.
             If the Positive Cashflow exceeds the Negative Cashflow, such
             description shall be accompanied by payment of such excess
             to the Seller.  If the Negative Cashflow exceeds the
             Positive Cashflow, the Seller shall pay the amount of such


                                        8PAGE
<PAGE>


             excess to the Buyer within 30 days after receipt of such
             description.

                  (iv) Claims for indemnification for Excluded Product
             Line Taxes shall be made within 90 days of the filing of the
             Tax Return or amended Tax Return or payment of Tax, to which
             such claim relates.  Such claims shall be accompanied by a
             reasonably detailed description of the Excluded Product Line
             Taxes that are the subject of the claim for indemnification.
             In addition, for each taxable year beginning with the
             taxable year in which the Closing occurs and each subsequent
             taxable year ending on or before the later of December 31,
             1999 or December 31 of the year in which all of the Excluded
             Product Lines have been sold, the Buyer shall, no later than
             90 days after the filing of the Buyer's United States
             federal income Tax return for such taxable year, provide to
             the Seller a reasonably detailed description of all known
             Excluded Product Line Taxes and Excluded Product Line Tax
             Benefits with respect to that taxable year.  If such
             description shows Excluded Product Line Tax Benefits that
             exceed Excluded Product Line Taxes, such description shall
             be accompanied by payment of such excess to the Seller.  If
             such description shows Excluded Product Line Taxes in excess
             of Excluded Product Line Tax Benefits, the Seller shall pay
             the amount of such excess to the Buyer within 30 days after
             receipt of such description.  In either case, appropriate
             adjustment to the payment due shall be made to reflect any
             indemnification already made with respect to Excluded
             Product Line Taxes shown on such description (such as for
             estimated tax payments previously made and indemnified).

                  (v)  Any indemnification sought by the Thermo Parties
             for Excluded Product Line Losses shall follow the procedure
             set forth in Section 11.4 of the Agreement.

                  (vi) The Seller shall indemnify the Thermo Parties for
             the amounts referred to under clause (vii) of Section 2(a)
             above within 15 days after receipt of a reasonably detailed
             description of the amount and the basis for such
             indemnification and evidence of payment.

                  (vii)  As used in this Amendment the terms "Sale Price
             Shortfall" and "Sale Price Excess" exclude non-cash and
             deferred consideration in their calculation.  However, any
             such consideration that is received by the Thermo Parties
             and is thereafter reduced to cash after completion of the
             sale of all of the Excluded Product Lines shall be added to
             the Sale Price, and the Sale Price Shortfall, Sale Price
             Excess and Seller's Disposition Costs shall be recalculated
             accordingly.  Amounts owed to the Seller pursuant to Section
             2 of this Amendment after such recalculation shall be paid
             within 10 days of such recalculation.



                                        9PAGE
<PAGE>


                  (e)  Settlement of Disputes.  Failure of the Seller to
        notify the Buyer in reasonable detail of any objection with
        respect to any description received as provided in subparagraph
        (d) above within 30 days after receipt of such description shall
        constitute acceptance thereof, whereupon all amounts shown
        therein to be due to the Thermo Parties shall be deemed to have
        been agreed to by the Seller.  If the Seller objects to any such
        descriptions within such 30-day period, the parties shall use
        good faith efforts to resolve any such objections.  However, if
        the parties cannot reach a resolution within 30 days after the
        Buyer has received notice of Seller's objection, the parties
        shall submit the dispute to the Neutral Auditors, the decision of
        which shall be binding upon the parties.  The parties shall share
        equally the fees and expenses of the Neutral Auditors.  The
        parties agree that nothing in this Section (2)(e) shall entitle
        the Seller to examine the books and records relating to the Taxes
        of the Thermo Parties and their affiliates, other than books and
        records relating solely to the Taxes of the Excluded Product
        Lines.  The parties further agree that the Neutral Auditors shall
        be permitted to examine the books and records relating to the
        books and records of the Thermo Parties only insofar as they
        relate to a dispute to be resolved under this Section 2(e), and
        only if the Neutral Auditors provide assurance reasonably
        acceptable to the Thermo Parties that the Neutral Auditors will
        preserve the confidentiality of all information regarding the
        Thermo Parties.

                  (f)  Survival of Indemnity.  The indemnification
        obligations of the parties under this Section 2 shall survive
        indefinitely.

                  (g)  Security.  To secure the obligations of the Seller
        pursuant to Sections 1(a) and 2(a) of this Amendment, at the
        Closing the Seller shall place cash in an amount equal to the
        Excluded Product Line Value in a collateral trust account at
        Chemical Bank and shall grant the Buyer a security interest in
        the proceeds of such account pursuant to a pledge and collateral
        trust agreement in the form attached hereto as Exhibit B.

                  (h)  All indemnification payments under the Agreement
        and this Amendment shall be deemed adjustments to the Purchase
        Price.

             3.   Adjustment of Purchase Price.

                  (a)  The last sentence of Section 2.1 of the Agreement
        is amended by replacing "138,000,000" British pounds sterling
        each place it appears by a figure that equals the Net Book Value
        of the Retained Businesses as of the December 31, 1994 balance
        sheet, assuming that the Retained Businesses consist of the
        Business other than the Excluded Product Lines described on
        Exhibit A.  Such figure is currently estimated to be 108.5
        million British pounds sterling, but the parties shall determine
        a precise figure in good faith.  If the Excluded

                                       10PAGE
<PAGE>


        Product Lines include product lines in addition to those
        described on Exhibit A, such figure shall be recalculated to
        reflect the resulting change in composition of the Retained
        Businesses.

                  (b)  Section 4.1 of the Agreement is amended to read in
        its entirety as follows:

             "4.1 Post-Closing Adjustment.  The Purchase Price shall be
             subject to adjustment after the Closing Date as follows:

                  (a)  Within 60 days after the Closing Date, the Seller
             shall prepare and deliver to the Buyer a balance sheet as of
             the Closing Date, which shall reflect the assets and
             liabilities of the Retained Businesses (the "Draft Closing
             Balance Sheet").  The Draft Closing Balance Sheet shall not
             include assets or liabilities that are not Assets, Company
             Assets, Assumed Liabilities or Company Liabilities.  The
             Seller shall prepare the Draft Closing Balance Sheet in
             accordance with English generally accepted accounting
             principles ("GAAP") and the Accounting Principles and in
             such detail as the Buyer shall reasonably request.  The
             Draft Closing Balance Sheet shall include appropriate
             accruals for (x) liabilities of the Retained Businesses
             incurred prior to the Closing Date but for which invoices
             have not been received as of the Closing Date and (y)
             prepayments in respect of the Retained Businesses.

                  (b)  The Buyer shall deliver to the Seller within 60
             days after receiving the Draft Closing Balance Sheet a
             detailed statement describing its objections (if any)
             thereto. Failure of the Buyer so to object to the Draft
             Closing Balance Sheet shall constitute acceptance thereof,
             whereupon the Draft Closing Balance Sheet shall be deemed to
             be the "Closing Balance Sheet"The Buyer and the Seller shall
             use reasonable efforts to resolve any such objections, but
             if they do not reach a final resolution within 30 days after
             the Seller has received the statement of objections, the
             Buyer and the Seller shall select an accounting firm
             mutually acceptable to them (the "Neutral Auditors") to
             resolve any remaining objections.  If the Buyer and the
             Seller are unable to agree on the choice of Neutral
             Auditors, they shall select as Neutral Auditors an
             internationally-recognized accounting firm by lot (after
             excluding their respective regular independent accounting
             firms).  The Draft Closing Balance Sheet shall be adjusted
             by the Neutral Auditors only to conform to GAAP and the
             Accounting Principles and, as so adjusted, shall be the
             Closing Balance Sheet.  Such determination by the Neutral
             Auditors shall be conclusive and binding upon the Buyer and
             the Seller, absent fraud or manifest error.




                                       11PAGE
<PAGE>

                  (c)  During the preparation of the Draft Closing
             Balance Sheet by the Seller and the period of any dispute
             referred to above, the Buyer shall promptly disclose to the
             Seller, the Seller's independent accountants and, if
             applicable, the Neutral Auditors all relevant facts and
             information, give them full access to books, records,
             facilities and employees of the Retained Businesses and
             cooperate fully with the Seller, the Seller's accountants
             and, if applicable, the Neutral Auditors in order to prepare
             the Draft Closing Balance Sheet or the Closing Balance
             Sheet, as the case may be;  provided, however, that any such
             access shall be allowed only in such manner as not to
             interfere unreasonably with the operation of the Retained
             Businesses.

                  (d)  The Buyer and the Seller shall share equally the
             fees and expenses of the Neutral Auditors. 

                  (e)  If the Net Book Value (as defined below) as shown
             on the Closing Balance Sheet is less than the Interim Net
             Book Value, the Seller shall pay to the Buyer, by wire
             transfer or other delivery of immediately available funds,
             within three business days after the date on which the
             Closing Balance Sheet is finally determined pursuant to this
             Section 4.1, an amount equal to such deficiency (plus
             interest thereon from the Closing Date at the interest rate
             equal to 1% above LIBOR).  "Net Book Value" shall mean the
             excess of the combined tangible Assets and Company Assets
             (and for the avoidance of doubt shall include accounts
             receivable, cash, bank balances and similar assets) of the
             Retained Businesses over the combined Assumed Liabilities
             and Company Liabilities of the Retained Businesses.

                  (f)  If the Net Book Value as shown on the Closing
             Balance Sheet exceeds the Interim Net Book Value, the Buyer
             shall pay to the Seller, by wire transfer or other delivery
             of immediately available funds, within three business days
             after the date on which the Closing Balance Sheet is finally
             determined pursuant to this Section 4.1, an amount equal to
             such excess (plus interest thereon from the Closing Date at
             the interest rate equal to 1% above LIBOR). 

             4.   Allocation of Purchase Price.  Notwithstanding Section
        4.2 of the Agreement, the portion of the Purchase Price allocated
        to the Assets and the Shares that comprise the Excluded Product
        Lines shall equal the Excluded Product Line Value.

             5.   Transition Period for Foreign Retirement Plans.  For
        Continuing Employees who are Excluded Product Line Employees and
        who are located outside of the U.S., the Foreign Transition
        Period (as defined in Section 7.7(a) of the Agreement) shall not
        equal one year, but shall equal the period commencing on the
        Closing Date through the date upon which all of the Excluded


                                       12PAGE
<PAGE>


        Product Lines are sold by the Buyer to one or more unaffiliated
        third parties in accordance with the Consent Order (the "Sale
        Date").  

             6.   Health Insurance for U.K. Employees.  The maximum
        period during which the Seller shall be required, at the Buyer's
        election, to allow U.K. Employees to participate in the Seller's
        private health insurance scheme pursuant to Section 7.7(b)(vi) of
        the Agreement, shall be extended to the Sale Date for any
        Excluded Product Line Employees that are U.K. Employees.

             7.   Assignment.  Notwithstanding anything to the contrary
        in the Agreement, the Buyer may assign some or all of its rights
        and obligations under the Agreement to one or more third parties
        other than the Thermo Parties that acquire some or all of the
        Excluded Product Lines, to the extent such rights and obligations
        relate to such Excluded Product Lines.  To the extent such
        obligations are so assigned, neither the Buyer nor the Parent
        shall have any further obligation to the Seller with respect
        thereto, and the Seller will look only to the assignee for the
        performance thereof.

             8.   Modifications to Indemnification Provisions.  Section
        11.3(a) of the Agreement shall apply only to Losses that do not
        relate to the Excluded Product Lines, and each reference to
        "Losses" therein shall refer only to such Losses.  The
        Indemnification Threshold shall be reduced from 2,000,000 British
        pounds sterling to the product of (i) 2,000,000 British pounds
        sterling and (ii) the ratio of the Purchase Price less the
        Excluded Product Line Value to the Purchase Price.  The Minimum
        Claim Amount shall be reduced from 100,000 British pounds
        sterling to the product of (i) 100,000 British pounds sterling
        and (ii) the ratio of the Purchase Price less the Excluded
        Product Line Value to the Purchase Price.  Section 11.3(a)(ii)
        shall be amended to read in its entirety as follows:

             "(ii) The Indemnitor shall not be required to indemnify the
             Indemnitee for any Losses which, when added to the aggregate
             amount of all other Losses indemnifiable under this Section
             11, exceed in the aggregate one-half of the amount equal to
             the Purchase Price minus the Excluded Product Line Value."

             9.   Modification of Best Efforts Clause.  The following
        sentence shall be added as the second sentence of Section 7.3:

             "For purposes of clause (ii) of the preceding sentence and
        Section 13.11 hereof, "best efforts" shall include entering into
        arrangements with competition regulatory authorities that
        contemplate the divestiture by the Buyer of the Excluded Product
        Lines and the management of the Excluded Product Lines prior to
        such divestiture by the Seller."

             10.  Certain Employment Arrangements.   Notwithstanding
        anything to the contrary in the Agreement, the Thermo Parties

                                       13PAGE
<PAGE>


        shall not assume any obligations whatsoever of the Seller or any
        other Asset Seller or any Company (including under any employment
        agreement, severance agreement or benefit or welfare plan of any
        kind, or under applicable law) with respect to the employment of
        David Richardson, the principal executive officer of the
        Business, or the termination of such employment, and the Seller
        shall indemnify the Thermo Parties against any costs or expenses
        incurred as a result of any such obligations.  The Seller shall
        use its best efforts to retain Mr. Richardson in the employment
        of the Business up to the Closing Date and terminate the
        employment of Mr. Richardson prior to the Closing.  If the Thermo
        Parties elect to offer employment to Mr. Richardson as of the
        Closing Date, such employment shall be deemed to be a new
        employment relationship and shall not cause the Thermo Parties to
        assume any liabilities with respect to Mr. Richardson's
        employment or termination by the Seller prior to the Closing.
         
             11.  Extension of Termination Date.  The Termination Date
        shall be extended to March 31, 1996.

             12.  Conflicts.  In the event of any conflict between the
        terms of this Amendment and any other term of the Agreement, the
        terms of this Amendment shall be controlling.

             13.  No Further Amendments.  Except as amended heretofore
        and hereby, the Agreement shall remain in full force and effect,
        enforceable in accordance with its terms.

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

                                      THERMO INSTRUMENT SYSTEMS INC.


                                      By:  Jonathan W. Painter
                                         Name:  Jonathan W. Painter
                                         Title:  Treasurer

                                      THERMO ELECTRON CORPORATION


                                      By:  Peter G. Pantazelos
                                         Name:  Peter G. Pantazelos
                                         Title:  Executive Vice President

                                      FISONS PLC


                                      By:  John H. Bailey
                                      Name:  John H. Bailey
                                      Title:  Corporate Development
                                              Director



                                       14<PAGE>









                                                                      Exhibit 11


                         THERMO INSTRUMENT SYSTEMS INC.

                        Computation of Earnings per Share


                             Three Months Ended            Nine Months Ended
                         --------------------------   --------------------------
                         September 30,   October 1,   September 30,   October 1,
                                  1995         1994            1995         1994
                         -------------  -----------   -------------  -----------
Computation of Fully Diluted
 Earnings per Share from
 Continuing Operations:

Income:
  Net income              $21,881,000   $14,532,000   $57,468,000    $40,572,000

  Add: Convertible
       obligation
       interest, net
       of tax               1,392,000     1,562,000     4,352,000      4,773,000
                          -----------   -----------   -----------    -----------
  Income applicable
   to common
   stock assuming
   full dilution (a)      $23,273,000   $16,094,000   $61,820,000    $45,345,000
                          -----------   -----------   -----------    -----------

Shares:
  Weighted average
   shares outstanding      72,903,966    70,730,555    72,220,484     70,348,466

  Add: Shares issuable
       from assumed
       conversion of
       convertible
       obligations         12,004,497    13,860,161    12,602,292     14,185,601

       Shares issuable
       from assumed
       exercise of
       options (as
       determined by
       the application
       of the treasury
       stock method)          536,362       289,915       536,362        331,225
                          -----------   -----------   -----------    -----------

  Weighted average
   shares outstanding,
   as adjusted (b)         85,444,825    84,880,631    85,359,138     84,865,292
                          -----------   -----------   -----------    -----------
Fully Diluted Earnings
 per Share from
 Continuing Operations
 (a) / (b)                $       .27   $       .19   $       .72    $       .53
                          ===========   ===========   ===========    ===========
PAGE
<PAGE>

                                                                      Exhibit 11


                         THERMO INSTRUMENT SYSTEMS INC.

                  Computation of Earnings per Share (continued)

                            Three Months Ended             Nine Months Ended
                        --------------------------    --------------------------
                         September 30,   October 1,   September 30,   October 1,
                                  1995         1994            1995         1994
                         -------------  -----------   -------------  -----------

Computation of Fully Diluted
 Earnings per Share:

Income:
  Net income              $21,881,000   $15,104,000   $57,470,000    $42,040,000

  Add: Convertible
       obligation
       interest, net
       of tax               1,392,000     1,562,000     4,352,000      4,773,000
                          -----------   -----------   -----------    -----------

  Income applicable
   to common
   stock assuming
   full dilution (a)      $23,273,000   $16,666,000   $61,822,000    $46,813,000
                          -----------   -----------   -----------    -----------
Shares:
  Weighted average
   shares outstanding      72,903,966    70,730,555    72,220,484     70,348,466

  Add: Shares issuable
       from assumed
       conversion of
       convertible
       obligations         12,004,497    13,860,161    12,602,292     14,185,601

       Shares issuable
       from assumed
       exercise of
       options (as
       determined by
       the application
       of the treasury
       stock method)          536,362       289,915       536,362        331,225
                          -----------   -----------   -----------    -----------
  Weighted average
   shares outstanding,
   as adjusted (b)         85,444,825    84,880,631    85,359,138     84,865,292
                          -----------   -----------   -----------    -----------
Fully Diluted Earnings
 per Share (a) / (b)      $       .27   $       .20   $       .72    $       .55
                          ===========   ===========   ===========    ===========



<TABLE> <S> <C>

<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THERMO
INSTRUMENT SYSTEMS INC.'S QUARTERLY REPORT ON FORM 10-Q FOR THE QUARTER ENDED
SEPTEMBER 30, 1995 AND IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH
FINANCIAL STATEMENTS.
</LEGEND>
<MULTIPLIER> 1,000
       
<S>                             <C>
<PERIOD-TYPE>                   9-MOS
<FISCAL-YEAR-END>                          DEC-30-1995
<PERIOD-END>                               SEP-30-1995
<CASH>                                         310,173
<SECURITIES>                                     4,471
<RECEIVABLES>                                  184,462
<ALLOWANCES>                                    10,367
<INVENTORY>                                    150,891
<CURRENT-ASSETS>                               691,787
<PP&E>                                         185,053
<DEPRECIATION>                                  51,714
<TOTAL-ASSETS>                               1,208,993
<CURRENT-LIABILITIES>                          279,999
<BONDS>                                        202,968
<COMMON>                                         7,381
                                0
                                          0
<OTHER-SE>                                     510,379
<TOTAL-LIABILITY-AND-EQUITY>                 1,208,993
<SALES>                                        552,587
<TOTAL-REVENUES>                               552,587
<CGS>                                          283,222
<TOTAL-COSTS>                                  283,222
<OTHER-EXPENSES>                                40,098
<LOSS-PROVISION>                                 1,486
<INTEREST-EXPENSE>                              12,187
<INCOME-PRETAX>                                 87,391
<INCOME-TAX>                                    29,104
<INCOME-CONTINUING>                             57,468
<DISCONTINUED>                                       2
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                    57,470
<EPS-PRIMARY>                                      .80
<EPS-DILUTED>                                      .72
        


</TABLE>


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