THERMO SENTRON INC
10-K, 1998-03-12
GENERAL INDUSTRIAL MACHINERY & EQUIPMENT
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                       SECURITIES AND EXCHANGE COMMISSION
                              WASHINGTON, DC 20549

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

                                    FORM 10-K

   (mark one)
   [ X ] Annual Report Pursuant to Section 13 or 15(d) of the Securities
         Exchange Act of 1934 for the fiscal year ended January 3, 1998

   [   ] Transition Report Pursuant to Section 13 or 15(d) of the Securities
         Exchange Act of 1934
                         Commission file number 1-14254

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

   Delaware                                                         41-1827303
   (State or other jurisdiction of                            (I.R.S. Employer
   incorporation or organization)                          Identification No.)
   501 90th Avenue N.W.
   Minneapolis, Minnesota                                                55433
   (Address of principal executive offices)                         (Zip Code)
       Registrant's telephone number, including area code: (781) 622-1000

           Securities registered pursuant to Section 12(b) of the Act:

         Title of each class       Name of each exchange on which registered
     ----------------------------  -----------------------------------------
     Common Stock, $.01 par value           American Stock Exchange

           Securities registered pursuant to Section 12(g) of the Act:
                                      None
   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, and (2) has been subject to the
   filing requirements for at least the past 90 days. Yes [ X ] No [   ]

   Indicate by check mark if disclosure of delinquent filers pursuant to Item
   405 of Regulation S-K is not contained herein, and will not be contained,
   to the best of the Registrant's knowledge, in definitive proxy or
   information statements incorporated by reference into Part III of this Form
   10-K or any amendment to this Form 10-K. [   ]

   The aggregate market value of the voting stock held by nonaffiliates of the
   Registrant as of January 30, 1998, was approximately $21,013,000.
   As of January 30, 1998, the Registrant had 9,862,000 shares of Common Stock
   outstanding.

                       DOCUMENTS INCORPORATED BY REFERENCE

   Portions of the Registrant's Annual Report to Shareholders for the year
   ended January 3, 1998, are incorporated by reference into Parts I and II.

   Portions of the Registrant's definitive Proxy Statement for the Annual
   Meeting of Shareholders to be held on June 1, 1998, are incorporated by
   reference into Part III.
PAGE
<PAGE>
                                     PART I

    Item 1. Business
            --------

    (a) General Development of Business
        -------------------------------

        Thermo Sentron Inc. (the Company or the Registrant) designs,
    develops, manufactures, and sells high-speed precision-weighing and
    inspection equipment for industrial production and packaging lines. The
    Company serves two principal markets: packaged goods and bulk materials.
    The Company's products for the packaged-goods market include a broad
    line of checkweighing equipment and metal detectors that can be
    integrated at various stages in production lines for process control and
    quality assurance. The Company's bulk-materials product line includes
    conveyor-belt scales, solid level-measurement and conveyor-monitoring
    systems, sampling systems, and small-capacity feeders. In February 1997,
    the Company acquired substantially all the assets, subject to certain
    liabilities of RCC Industrial Electronics Pty. Limited (RCCI), an
    Australian-based manufacturer of in-motion checkweighers for the food
    and pharmaceutical industries. In July 1997, the Company acquired
    Westerland Engineering Ltd., a United Kingdom-based manufacturer of
    process-weighing and control equipment.

        The Company was incorporated in Delaware in November 1995 as a wholly
    owned subsidiary of Thermedics Inc., a publicly traded subsidiary of
    Thermo Electron Corporation. The Company was operated as Ramsey
    Technology Inc., a wholly owned subsidiary of Baker Hughes Incorporated,
    prior to its March 16, 1994, acquisition by Thermedics. In April 1996,
    the Company sold 2,875,000 shares of its common stock in an initial
    public offering at $16.00 per share, for net proceeds of $42.3 million.
    As of January 3, 1998, Thermedics owned 7,000,000 shares of the Company's
    common stock, representing 71% of such stock outstanding. In addition to
    the Company's products, Thermedics develops, manufactures, and markets
    electrochemistry and microweighing products, product quality-assurance
    systems, instruments to test electronics and a range of power products,
    semiconductors, security devices, as well as implantable heart-assist
    systems, whole blood coagulation testing equipment, skin-incision
    devices, and other biomedical products. As of January 3, 1998, Thermo
    Electron owned 676,900 shares of the Company's common stock, representing
    7% of such stock outstanding. Thermo Electron and Thermedics may purchase
    shares of the Company's common stock from time to time in the open
    market, or in negotiated transactions. During 1997*, Thermo Electron
    purchased 426,900 shares of the Company's common stock for $4,772,000.
    Thermo Electron provides analytical and monitoring instruments;
    biomedical products including heart-assist devices, respiratory-care
    equipment, and mammography systems; paper-recycling and papermaking
    equipment; alternative-energy systems; industrial process equipment; and
    other specialized products. Thermo Electron also provides industrial
    outsourcing, laboratory, and metallurgical services, and conducts
    advanced-technology research and development.

    * References to 1997, 1996, and 1995 herein are for the fiscal years
      ended January 3, 1998, December 28, 1996, and December 30, 1995,
      respectively.

                                        2PAGE
<PAGE>
    Forward-looking Statements

        Forward-looking statements, within the meaning of Section 21E of the
    Securities Exchange Act of 1934, are made throughout this Annual Report
    on Form 10-K. For this purpose, any statements contained herein that are
    not statements of historical fact may be deemed to be forward-looking
    statements. Without limiting the foregoing, the words "believes,"
    "anticipates," "plans," "expects," "seeks," "estimates," and similar
    expressions are intended to identify forward-looking statements. There
    are a number of important factors that could cause the results of the
    Company to differ materially from those indicated by such forward-looking
    statements, including those detailed under the heading "Forward-looking
    Statements" in the Registrant's 1997 Annual Report to Shareholders which
    statements are incorporated herein by reference.

    (b) Information About Industry Segments
        -----------------------------------

        The Company is engaged in one business segment: the design,
    manufacture, and marketing of precision-weighing and inspection
    equipment.

    (c) Description of Business
        -----------------------

    Products for Packaged Goods

        Sales of products for the packaged-goods market represented
    approximately 36% of the Company's total revenues in 1997. These
    products are sold primarily to customers in the food-processing and
    pharmaceutical industries.

        Checkweighing Equipment. The Company's checkweighing products weigh,
        -----------------------
    classify, and reject packages moving at high speeds (more than 600
    packages per minute) with accuracy to within three grams. The Company
    also offers checkweighing products that are accurate to the 50-milligram
    level for pharmaceutical and other high-accuracy applications. By
    assuring that packages contain designated quantities of materials, the
    Company's checkweighing equipment is used to satisfy customer demand and
    regulatory requirements for quality standards, to improve productivity
    by minimizing product giveaway, and to protect the value associated with
    customers' brand names.

        The Company has developed customized weighing solutions suitable for
    particular applications, such as retrofitting packaging lines in
    response to changes in package size, type, and design.

        The Company produces a complete line of electronic in-line
    checkweighing products ranging from devices designed solely to reject
    underweight products, to sophisticated machines with comprehensive
    statistical data-collection and production-monitoring capabilities,
    allowing customers to monitor the deviation from target weight, the
    number of rejections, and the amount of product giveaway. 

                                        3PAGE
<PAGE>
        Metal Detectors. Metal detectors are used to inspect packaged
        ---------------
    products for metal contaminants. The Company offers metal detectors
    capable of detecting a small metal particle (approximately one
    millimeter in diameter) in a package moving on a conveyor belt at speeds
    in excess of 300 feet per minute.

        The Company's patented self-testing technology for use with
    metal-detection products allows an operator to program a metal detector
    to automatically route a metal test sphere through the device at preset
    intervals, without operator assistance or interruption to the production
    process. The results of these tests can be tracked by computer and
    incorporated into quality- and process-control reports. The Company
    introduced this new patented feature as part of its metal-detection
    product line in 1996.

        Other Products for Packaged Goods. Other complementary packaged-
        ---------------------------------
    goods products offered by the Company include canned-goods label
    inspectors and various conveying and product-handling devices to assist
    in the presentation of products to the Company's checkweighing equipment
    and metal detectors, and the rejecting and handling of unacceptable
    products from the customer's production line.

        Revenues from products for packaged goods were $28,563,000,
    $25,861,000, and $23,700,000 in 1997, 1996, and 1995, respectively.

    Products for Bulk Materials

        Sales of products for the bulk-materials market represented
    approximately 64% of the Company's total revenues in 1997. These
    products are sold primarily to customers in the mining and
    material-processing industries, electric utilities, and chemical and
    other manufacturing companies.

        Conveyor-belt Scales. A conveyor-belt scale is a device that
        --------------------
    measures the rate at which bulk material is being conveyed and delivered
    on a moving conveyor belt, as well as the total mass of material
    conveyed over a given time. The Company offers a wide variety of
    conveyor-belt scales for use in industrial and other applications.

        The Company's conveyor-belt scales are typically used to measure
    production rates and monitor inventory, to control the rate of flow of
    measured materials or other related materials for blending purposes, and
    to monitor process performance. Conveyor-belt scales are used in many
    industries, including mining, construction materials, power, food-
    processing, pulp and paper, chemicals, and solids recycling. By
    eliminating a separate weighing procedure from the production process,
    conveyor-belt scales are used to streamline operations in these
    industries.

        The Company's conveyor-belt scales are well-suited for the weighing
    of materials traveling at high speeds and for processes requiring high
    accuracy. These products make use of the Company's proprietary
    algorithms and applications expertise to measure material moving at
    speeds in excess of 10,000 tons per hour with accuracy to within the
                                        4PAGE
<PAGE>
    0.125% level. The Company's conveyor-belt scales may also be linked to a
    computer for system process-control. This communications capability is
    designed to assist customers in monitoring inventory, preparing quality-
    control reports, and operating production lines more efficiently.

        The Company incorporates its conveyor-belt scales into short-length
    conveyors called weigh-belt feeders. These products are used both to
    weigh materials in motion and to adjust the speed of the conveyor belt
    to control the amount of material fed in connection with a production
    process.

        The Company's conveyor-belt scales include models for process
    monitoring, plant-control and inventory, and stock piling services, as
    well as high-precision models for use in the transfer of custody of
    goods requiring government-agency certification and approvals.

        Sampling Systems. Sampling systems are typically used to
        ----------------
    mechanically extract a small amount of material (the sample) from a
    moving conveyor so that the material can be taken to an analytical
    laboratory for testing. The Company provides a number of different
    systems that extract and collect statistically representative samples of
    bulk materials for quality-control purposes. The Company's sampling
    systems are used at mine sites, shipping facilities, transfer stations,
    steel mills, cement plants, and coal-fired power plants. The Company's
    sampling systems are used by manufacturers and their customers to ensure
    that products conform to desired specifications at the time of both
    shipment and delivery.

        The Company offers a variety of sampling solutions, including
    "sweep" samplers, which extract samples from any location on a moving
    conveyor belt, and self-contained sampling units, which provide a
    modular approach to sampling without expensive integration into the
    user's material-handling system.

        Small-capacity Feeders. The Company's small-capacity feeders are
        ----------------------
    used to feed the correct proportions of ingredients, such as powders,
    liquids, and granules, during continuous production processes. Customers
    include companies in the food, pharmaceutical, chemical, and plastics
    industries.

        Other Bulk-materials Products. The Company's solid level-measurement
        -----------------------------
    and conveyor-monitoring products include safety pull, belt run-off, and
    tilt switches; speed-monitoring devices; contents-monitoring systems;
    and grade, slope, and material feed controls for asphalt paving
    machines. The Company's other complementary bulk-material products
    include tramp metal detectors, front-end loader scales, and static
    weighing and batching equipment. These products are often incorporated
    into complete weighing solutions the Company provides to its customers.

        Revenues from products for bulk materials were $50,132,000,
    $44,166,000, and $43,774,000 in 1997, 1996, and 1995, respectively.

                                        5PAGE
<PAGE>
    Distribution of Products

        The Company markets and distributes its products primarily through
    manufacturer representatives. It also relies upon a direct sales force,
    distributors, and original equipment manufacturers.

    Raw Materials

        The C-level sensor used as a component of one of the Company's
    bulk-materials products is supplied by a sole-source vendor. Although
    the Company has not experienced any difficulty in obtaining adequate
    supplies from this vendor, there can be no assurance that the vendor
    will be able to furnish the Company with a sufficient number of C-level
    sensors to meet customer demand. The Company believes that the
    unanticipated loss of this vendor would not result in a material adverse
    effect on the Company's business.

    Patents, Licenses, and Trademarks

        The Company's proprietary methodologies, designs, and other
    proprietary intellectual rights are important to the Company's
    operations. The Company relies upon a combination of patent, trade
    secret, nondisclosure, and other contractual arrangements, as well as
    copyright and trademark laws, to protect its proprietary rights. The
    Company seeks to limit access to and distribution of its proprietary
    information. There can be no assurance that the steps taken by the
    Company in this regard will be adequate to deter misappropriation of its
    proprietary information, that the Company will be able to detect
    unauthorized use and take appropriate steps to enforce its intellectual
    property rights, or that competitors will not be able to develop similar
    technology independently.

        The Company holds issued U.S. patents expiring at various dates
    ranging from September 2002 to September 2010. The Company also has
    applications pending for additional U.S. patents and a number of foreign
    counterparts for its patents in various foreign countries. In addition,
    the Company has certain registered and other trademarks and is a licensee
    of a patent for its C-level sensors. The Company believes that its
    products, trademarks, and other proprietary rights do not infringe the
    proprietary rights of third parties. There can be no assurance, however,
    that third parties will not assert infringement claims in the future.

    Backlog

        The Company's backlog of unfilled firm orders was $13,142,000 and
    $14,195,000 as of January 3, 1998, and December 28, 1996, respectively.
    Certain of these orders are cancellable by the customer upon payment of a
    cancellation charge. The Company anticipates that substantially all of
    the backlog at January 3, 1998, will be shipped during 1998. The Company
    does not believe that the size of its backlog is necessarily indicative
    of intermediate or long-term trends in its business.

                                        6PAGE
<PAGE>
    Competition

        The Company encounters and expects to continue to encounter intense
    competition in the sale of its products. The Company's principal
    competitors in the packaged-goods market are Ishida Scales Mfg. Co., Ltd.
    and Mettler-Toledo AG. In the more fragmented bulk-materials market, the
    Company competes on a worldwide basis primarily with Carl Schenck AG and
    Milltronics Corporation. The Company believes that the principal
    competitive pressures affecting the market for precision-weighing and
    inspection equipment include customer service and support, quality and
    reliability, price, accuracy, ease of use, distribution channels,
    technical features, compatibility with customers' manufacturing
    processes, and regulatory approvals. Certain of the Company's competitors
    have greater resources, manufacturing and marketing capabilities,
    technical staff, and production facilities than those of the Company. As
    a result, they may be able to adapt more quickly to new or emerging
    technologies and changes in customer requirements, or to devote greater
    resources to the promotion and sale of their products, than can the
    Company. Competition could increase if new companies enter the market or
    if existing competitors expand their product lines.

    Research and Development

        Research and development expenses for the Company were $1,888,000,
    $1,881,000, and $1,920,000 in 1997, 1996, and 1995, respectively.

    Environmental Protection Regulations

        The Company believes that its compliance with federal, state, and
    local environmental protection regulations will not have a material
    adverse effect on its capital expenditures, earnings, or competitive
    position.

    Number of Employees

        As of January 3, 1998, the Company employed approximately 477 people.

    (d) Financial Information About Exports by Domestic Operations and About
        --------------------------------------------------------------------
        Foreign Operations
        ------------------

        Financial information about exports by domestic operations and about
    foreign operations is summarized in Note 10 to Consolidated Financial
    Statements in the Registrant's 1997 Annual Report to Shareholders, which
    information is incorporated herein by reference.



                                        7PAGE
<PAGE>
    (e) Executive Officers of the Registrant
        ------------------------------------

                                         Present Title (Year First Became
        Name                       Age   Executive Officer)
        ------------------------   ---   -----------------------------------
        Lewis J. Ribich             53   President and Chief Executive
                                           Officer (1995)
        John N. Hatsopoulos         63   Chief Financial Officer and Senior
                                           Vice President (1996)
        Paul F. Kelleher            55   Chief Accounting Officer (1995)
        M. Preston Luman            42   Vice President, Finance and 
                                           Operations (1995)

        Each executive officer serves until his successor is chosen or
    appointed by the Board of Directors and qualified or until his earlier
    resignation, death, or removal. Messrs. Hatsopoulos and Kelleher have
    held comparable positions for at least five years with Thermedics or
    Thermo Electron. Mr. Ribich has been Chief Executive Officer, President,
    and a Director of the Company since its inception in 1995 and President
    of Ramsey since 1990. Mr. Luman has been Vice President, Finance and
    Operations of the Company since its inception in 1995. For ten years, Mr.
    Luman has held various financial and operations positions at Ramsey.
    Messrs. Hatsopoulos and Kelleher are full-time employees of Thermo
    Electron, but devote such time to the affairs of the Company as the
    Company's needs reasonably require.

    Item 2. Properties
            ----------

        Under a lease expiring in March 1999, the Company leases
    approximately 90,000 square feet of office and final-assembly space in
    Minneapolis, Minnesota, from which it conducts its principal U.S.
    operations. The Company conducts its international operations primarily
    from approximately 156,000 square feet of additional facilities, 35,000
    square feet of which is owned by the Company. The remainder is occupied
    under leases expiring at various dates through 2013. The Company believes
    that these facilities are in good condition and are suitable and adequate
    to meet its current needs.

    Item 3. Legal Proceedings
            -----------------

        Not applicable.

    Item 4. Submission of Matters to a Vote of Security Holders
            ---------------------------------------------------

        Not applicable.



                                        8PAGE
<PAGE>
                                     PART II

    Item 5. Market for Registrant's Common Equity and Related Stockholder
            -------------------------------------------------------------
            Matters
            -------

        (a) Information concerning the market and market price for the
    Registrant's common stock, $.01 par value, and dividend policy is
    included under the sections labeled "Common Stock Market Information" and
    "Dividend Policy" in the Registrant's 1997 Annual Report to Shareholders
    and is incorporated herein by reference.
        (b) The Company sold 2,875,000 shares of common stock, par value $.01
    per share, pursuant to a Registration Statement on Form S-1 (File No.
    333-806), which was declared effective by the Securities and Exchange
    Commission on March 27, 1996. The managing underwriters of the offering
    were NatWest Securities Limited, Lehman Brothers, and Raymond James &
    Associates, Inc. The Company's net proceeds from the offering were
    $42,335,000. As of January 3, 1998, the Company had expended $1,368,000
    of such net proceeds for the purchase of property, plant, and equipment
    and $3,209,000 for research and development. In 1996, the Company used
    $12,600,000 of the net proceeds to repay short-term borrowings, of which
    $4,600,000 was paid to Thermo Electron, and the balance was paid to
    persons other than directors or officers of the Company, persons owning
    more than 10 percent of any class of equity securities of the Company, or
    affiliates of the Company. In March 1997, the Company used $1,082,000 of
    the net proceeds to acquire the assets of RCC Industrial Electronics Pty.
    Ltd. As of January 3, 1998, the Company had expended an aggregate of
    $18,259,000 of such net proceeds. The Company invested, from time to
    time, the balance of such net proceeds, primarily in investment grade
    interest or dividend bearing instruments. As of January 3, 1998, the
    balance of the net proceeds of $24,076,000 was invested pursuant to a
    repurchase agreement with Thermo Electron.

    Item 6. Selected Financial Data
            -----------------------

        The information required under this item is included under the
    sections labeled "Selected Financial Information" and "Dividend Policy"
    in the Registrant's 1997 Annual Report to Shareholders and is
    incorporated herein by reference.

    Item 7. Management's Discussion and Analysis of Financial Condition and
            ---------------------------------------------------------------
            Results of Operations
            ---------------------
        The information required under this item is included under the
    heading "Management's Discussion and Analysis of Financial Condition and
    Results of Operations" in the Registrant's 1997 Annual Report to
    Shareholders and is incorporated herein by reference.

    Item 8. Financial Statements and Supplementary Data
            -------------------------------------------

        The Registrant's Consolidated Financial Statements as of January 3,
    1998, and Supplementary Data are included in the Registrant's 1997 Annual
    Report to Shareholders and are incorporated herein by reference.

    Item 9. Changes in and Disagreements with Accountants on Accounting and
            ---------------------------------------------------------------
            Financial Disclosure
            --------------------
        Not applicable.

                                        9PAGE
<PAGE>
                                    PART III

    Item 10. Directors and Executive Officers of the Registrant
             --------------------------------------------------

        The information concerning directors required under this item is
    incorporated herein by reference from the material contained under the
    caption "Election of Directors" in the Registrant's definitive proxy
    statement to be filed with the Securities and Exchange Commission
    pursuant to Regulation 14A, not later than 120 days after the close of
    the fiscal year. The information concerning delinquent filers pursuant to
    Item 405 of Regulation S-K is incorporated herein by reference from the
    material contained under the heading "Section 16(a) Beneficial Ownership
    Reporting Compliance" under the caption "Stock Ownership" in the
    Registrant's definitive proxy statement to be filed with the Securities
    and Exchange Commission pursuant to Regulation 14A, not later than 120
    days after the close of the fiscal year.

    Item 11. Executive Compensation
             ----------------------

        The information required under this item is incorporated herein by
    reference from the material contained under the caption "Executive
    Compensation" in the Registrant's definitive proxy statement to be filed
    with the Securities and Exchange Commission pursuant to Regulation 14A,
    not later than 120 days after the close of the fiscal year.

    Item 12. Security Ownership of Certain Beneficial Owners and Management
             --------------------------------------------------------------

        The information required under this item is incorporated herein by
    reference from the material contained under the caption "Stock Ownership"
    in the Registrant's definitive proxy statement to be filed with the
    Securities and Exchange Commission pursuant to Regulation 14A, not later
    than 120 days after the close of the fiscal year.

    Item 13. Certain Relationships and Related Transactions
             ----------------------------------------------

        The information required under this item is incorporated herein by
    reference from the material contained under the caption "Relationship
    with Affiliates" in the Registrant's definitive proxy statement to be
    filed with the Securities and Exchange Commission pursuant to Regulation
    14A, not later than 120 days after the close of the fiscal year.








                                       10PAGE
<PAGE>
                                     PART IV

    Item 14. Exhibits, Financial Statement Schedules, and Reports on Form 8-K
             ----------------------------------------------------------------

       (a,d) Financial Statements and Schedules
             ----------------------------------

             (1)The consolidated financial statements set forth in the list
                below are filed as part of this Report.

             (2)The consolidated financial statement schedule set forth in
                the list below is filed as part of this Report.

             (3)Exhibits filed herewith or incorporated herein by reference
                are set forth in Item 14(c) below.

             List of Financial Statements and Schedules Referenced in this
             -------------------------------------------------------------
             Item 14
             -------

             Information incorporated by reference from Exhibit 13 filed
             herewith:

                Consolidated Statement of Income
                Consolidated Balance Sheet
                Consolidated Statement of Cash Flows
                Consolidated Statement of Shareholders' Investment
                Notes to Consolidated Financial Statements
                Report of Independent Public Accountants

             Financial Statement Schedules filed herewith:

                Schedule II:  Valuation and Qualifying Accounts

             All other schedules are omitted because they are not applicable
             or not required, or because the required information is shown
             either in the financial statements or in the notes thereto.

         (b) Reports on Form 8-K
             -------------------

             None.

         (c) Exhibits
             --------

             See Exhibit Index on the page immediately preceding exhibits.




                                       11PAGE
<PAGE>
                                   SIGNATURES

        Pursuant to the requirements of Section 13 or 15(d) 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.

    Date: March 12, 1998              THERMO SENTRON INC.



                                      By: Lewis J. Ribich
                                          -----------------------------
                                          Lewis J. Ribich
                                          President and Chief Executive
                                            Officer

        Pursuant to the requirements of the Securities Exchange Act of 1934,
    this report has been signed below by the following persons on behalf of
    the Registrant and in the capacities indicated below, as of March 12,
    1998.

    Signature                         Title
    ---------                         -----


    By: Lewis J. Ribich              President, Chief Executive Officer,
        -------------------------     and Director
        Lewis J. Ribich             

    By: John N. Hatsopoulos          Chief Financial Officer and Senior
        -------------------------     Vice President
        John N. Hatsopoulos         

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

    By: John W. Wood Jr.             Chairman of the Board and Director
        -------------------------
        John W. Wood Jr.

    By: Marshall J. Armstrong        Director
        -------------------------
        Marshall J. Armstrong

    By: Donald E. Noble              Director
        -------------------------
        Donald E. Noble

    By: Peter Richman                Director
        -------------------------
        Peter Richman


                                       12PAGE
<PAGE>
                    Report of Independent Public Accountants
                    ----------------------------------------

    To the Shareholders and Board of Directors of Thermo Sentron Inc.:

        We have audited, in accordance with generally accepted auditing
    standards, the consolidated financial statements included in Thermo
    Sentron Inc.'s Annual Report to Shareholders incorporated by reference in
    this Form 10-K, and have issued our report thereon dated February 12,
    1998. Our audits were made for the purpose of forming an opinion on those
    statements taken as a whole. The schedule listed in Item 14 on page 11 is
    the responsibility of the Company's management and is presented for
    purposes of complying with the Securities and Exchange Commission's rules
    and is not part of the basic consolidated financial statements. This
    schedule has been subjected to the auditing procedures applied in the
    audits of the basic consolidated financial statements and, in our
    opinion, fairly states in all material respects the consolidated
    financial data required to be set forth therein in relation to the basic
    consolidated financial statements taken as a whole.



                                            Arthur Andersen LLP



    Boston, Massachusetts
    February 12, 1998






                                       13PAGE
<PAGE>
    SCHEDULE II

                               THERMO SENTRON INC.
                        Valuation And Qualifying Accounts
                                 (In thousands)


                             Balance  Provision
                                  at    Charged  Accounts            Balance
                           Beginning         to   Written             at End
    Description              of Year    Expense       Off  Other(a)  of Year
    ------------------------------------------------------------------------
    Allowance for
      Doubtful Accounts

    Year Ended
      January 3, 1998         $1,812    $   88    $ (697)   $ (120)   $1,083

    Year Ended
      December 28, 1996       $2,291    $  217    $ (679)   $  (17)   $1,812

    Year Ended
      December 30, 1995       $2,302    $  229    $ (229)   $  (11)   $2,291

    (a)Includes allowance of businesses acquired during the year as
       described in Note 3 to Consolidated Financial Statements in the
       Registrant's 1997 Annual Report to Shareholders and the effect of
       foreign currency translation.







                                       14PAGE
<PAGE>
                                  EXHIBIT INDEX

    Exhibit
    Number    Description of Exhibit
    ------------------------------------------------------------------------
      3.1     Certificate of Incorporation, as amended, of the
              Registrant (filed as Exhibit 3.1 to the Registrant's
              Registration Statement on Form S-1 [Reg. No. 333-806] and
              incorporated herein by reference).

      3.2     By-Laws of the Registrant (filed as Exhibit 3.2 to the
              Registrant's Registration Statement on Form S-1 [Reg. No.
              333-806] and incorporated herein by reference).

     10.1     Corporate Services Agreement dated as of January 31, 1996,
              between Thermo Electron Corporation (Thermo Electron) and
              the Registrant (filed as Exhibit 10.1 to the Registrant's
              Registration Statement on Form S-1 [Reg. No. 333-806] and
              incorporated herein by reference).

     10.2     Thermo Electron Corporate Charter, as amended and restated
              effective January 3, 1993 (filed as Exhibit 10.1 to Thermo
              Electron's Annual Report on Form 10-K for the fiscal year
              ended January 2, 1993 [File No. 1-8002] and incorporated
              herein by reference).

     10.3     Tax Allocation Agreement dated as of January 31, 1996,
              between Thermedics Inc. and the Registrant (filed as
              Exhibit 10.3 to the Registrant's Registration Statement on
              Form S-1 [Reg. No. 333-806] and incorporated herein by
              reference).

     10.4     Amended and Restated Master Repurchase Agreement dated as
              of January 31, 1996, between Thermo Electron and the
              Registrant (filed as Exhibit 10.4 to the Registrant's
              Annual Report on Form 10-K for the fiscal year ended
              December 28, 1996 [File No. 1-14254] and incorporated
              herein by reference.

     10.5     Amended and Restated Master Guarantee Reimbursement and
              Loan Agreement dated as of December 9, 1997, between
              Thermo Electron and the Registrant.

     10.6     Amended and Restated Master Guarantee Reimbursement and
              Loan Agreement dated as of December 9, 1997, between
              Thermedics and the Registrant.

     10.7     Equity Incentive Plan of the Registrant (filed as Exhibit
              10.7 to the Registrant's Registration Statement on Form
              S-1 [Reg. No. 333-806] and incorporated herein by
              reference).


                                       15PAGE
<PAGE>
                                  EXHIBIT INDEX

    Exhibit
    Number    Description of Exhibit
    ------------------------------------------------------------------------
              In addition to the stock-based compensation plans of the
              Registrant, the executive officers of the Registrant may
              be granted awards under stock-based compensation plans of
              Thermo Electron and Thermedics for services rendered to
              the Registrant or such affiliated corporations. The terms
              of such plans are substantially the same as those of the
              Registrant's Equity Incentive Plan.

     10.8     Deferred Compensation Plan for Directors of the Registrant
              (filed as Exhibit 10.8 to the Registrant's Registration
              Statement on Form S-1 [Reg. No. 333-806] and incorporated
              herein by reference).

     10.9     Directors Stock Option Plan of the Registrant (filed as
              Exhibit 10.9 to the Registrant's Registration Statement on
              Form S-1 [Reg. No. 333-806] and incorporated herein by
              reference).

     10.10    Form of Indemnification Agreement for Officers and
              Directors (filed as Exhibit 10.10 to the Registrant's
              Registration Statement on Form S-1 [Reg. No. 333-806] and
              incorporated herein by reference).

     10.11    Amended and Restated Stock Holdings Assistance Plan and
              Form of Promissory Note. 

     13       Annual Report to Shareholders for the year ended
              January 3, 1998 (only those portions incorporated herein
              by reference).

     21       Subsidiaries of the Registrant.

     23       Consent of Arthur Andersen LLP.

     27       Financial Data Schedule.


                                                EXHIBIT 10.5

              AMENDED AND RESTATED MASTER GUARANTEE REIMBURSEMENT
                               AND LOAN AGREEMENT


             This AGREEMENT is entered into as of the 9th day of
        December, 1997 by and among Thermo Electron Corporation (the
        "Parent") and those of its subsidiaries that join in this
        Agreement by executing the signature page hereto (the "Majority
        Owned Subsidiaries").

                                   WITNESSETH:

             WHEREAS, the Majority Owned Subsidiaries and their
        wholly-owned subsidiaries wish to enter into various financial
        transactions, such as convertible or nonconvertible debt, loans,
        and equity offerings, and other contractual arrangements with
        third parties (the "Underlying Obligations") and may provide
        credit support to, on behalf of or for the benefit of, other
        subsidiaries of the Parent ("Credit Support Obligations"); 

             WHEREAS, the Majority Owned Subsidiaries and the Parent
        acknowledge that the Majority Owned Subsidiaries and their
        wholly-owned subsidiaries may be unable to enter into many kinds
        of Underlying Obligations without a guarantee of their
        performance thereunder from the Parent (a "Parent Guarantee") or
        without obtaining Credit Support Obligations from other Majority
        Owned Subsidiaries;

             WHEREAS, the Majority Owned Subsidiaries and their
        wholly-owned subsidiaries may borrow funds from the Parent, and
        the Parent may loan funds or provide credit to the Majority Owned
        Subsidiaries and their wholly-owned subsidiaries, on a short-term
        and unsecured basis;

             WHEREAS, certain Majority Owned Subsidiaries ("Second Tier
        Majority Owned Subsidiaries ") may themselves be majority owned
        subsidiaries of other Majority Owned Subsidiaries ("First Tier
        Majority Owned Subsidiaries");

             WHEREAS, for various reasons, Parent Guarantees of a Second
        Tier Majority Owned Subsidiary's Underlying Obligations may be
        demanded and given without the respective First Tier Majority
        Owned Subsidiary also issuing a guarantee of such Underlying
        Obligation; 

             WHEREAS, the Parent may itself make a loan or provide other
        credit to a Second Tier Majority Owned Subsidiary or its
        wholly-owned subsidiaries under circumstances where the
        applicable First Tier Majority Owned Subsidiary does not provide
        such credit; and

             WHEREAS, the Parent is willing to consider continuing to
        issue Parent Guarantees and providing credit, and the Majority
        Owned Subsidiaries are willing to consider continuing to provide
PAGE
<PAGE>
        Credit Support Obligations and to borrow funds, on the terms and
        conditions set forth below;

             NOW, THEREFORE, in consideration of the foregoing and other
        good and valuable consideration, the receipt and sufficiency of
        which are hereby acknowledged by each party hereto, the parties
        agree as follows:

        1.   If the Parent provides a Parent Guarantee of an Underlying
             Obligation, and the beneficiary(ies) of the Parent Guarantee
             enforce the Parent Guarantee, or the Parent performs under
             the Parent Guarantee for any other reason, then the Majority
             Owned Subsidiary that is obligated, either directly or
             indirectly through a wholly-owned subsidiary, under such
             Underlying Obligation shall indemnify and save harmless the
             Parent from any liability, cost, expense or damage
             (including reasonable attorneys' fees) suffered by the
             Parent as a result of the Parent Guarantee.  If the
             Underlying Obligation is issued by a Second Tier Majority
             Owned Subsidiary or a wholly-owned subsidiary thereof, and
             such Second Tier Majority Owned Subsidiary is unable to
             fully indemnify the Parent (because of the poor financial
             condition of such Second Tier Majority Owned Subsidiary, or
             for any other reason), then the First Tier Majority Owned
             Subsidiary that owns the majority of the stock of such
             Second Tier Majority Owned Subsidiary shall indemnify and
             save harmless the Parent from any remaining liability, cost,
             expense or damage (including reasonable attorneys' fees)
             suffered by the Parent as a result of the Parent Guarantee.
             If a Majority Owned Subsidiary or a wholly-owned subsidiary
             thereof provides a Credit Support Obligation for any
             subsidiary of the Parent, other than a subsidiary of such
             Majority Owned Subsidiary, and the beneficiary(ies) of the
             Credit Support Obligation enforce the Credit Support
             Obligation, or the Majority Owned Subsidiary or its
             wholly-owned subsidiary  performs under the Credit Support
             Obligation for any other reason, then the Parent shall
             indemnify and save harmless the Majority Owned Subsidiary or
             its wholly-owned subsidiary, as applicable, from any
             liability, cost, expense or damage (including reasonable
             attorneys' fees) suffered by the Majority Owned Subsidiary
             or its wholly-owned subsidiary, as applicable, as a result
             of the Credit Support Obligation.  Without limiting the
             foregoing, Credit Support Obligations include the deposit of
             funds by a Majority Owned Subsidiary or a wholly-owned
             subsidiary thereof in a credit arrangement with a banking
             facility whereby such funds are available to the banking
             facility as collateral for overdraft obligations of other
             Majority Owned Subsidiaries or their subsidiaries also
             participating in the credit arrangement with such banking
             facility.

        2.   For purposes of this Agreement, the term "guarantee" shall
             include not only a formal guarantee of an obligation, but
PAGE
<PAGE>
             also any other arrangement where the Parent is liable for
             the obligations of a Majority Owned Subsidiary or its
             wholly-owned subsidiaries.  Such other arrangements include
             (a) representations, warranties and/or covenants or other
             obligations joined in by the Parent, whether on a joint or
             joint and several basis, for the benefit of the Majority
             Owned Subsidiary or its wholly-owned subsidiaries and (b)
             responsibility of the Parent by operation of law for the
             acts and omissions of the Majority Owned Subsidiary or its
             wholly-owned subsidiaries, including controlling person
             liability under securities and other laws.

        3.   Promptly after the Parent receives notice that a beneficiary
             of a Parent Guarantee is seeking to enforce such Parent
             Guarantee, the Parent shall notify the Majority Owned
             Subsidiary(s) obligated, either directly or indirectly
             through a wholly-owned subsidiary, under the relevant
             Underlying Obligation.  Such Majority Owned Subsidiary(s) or
             wholly-owned subsidiary thereof, as applicable, shall have
             the right, at its own expense, to contest the claim of such
             beneficiary.  If a Majority Owned Subsidiary or wholly-owned
             subsidiary thereof, as applicable, is contesting the claim
             of such beneficiary, the Parent will not perform under the
             relevant Parent Guarantee unless and until, in the Parent's
             reasonable judgment, the Parent is obligated under the terms
             of such Parent Guarantee to perform.  Subject to the
             foregoing, any dispute between a Majority Owned Subsidiary
             or wholly-owned subsidiary thereof, as applicable, and a
             beneficiary of a Parent Guarantee shall not affect such
             Majority Owned Subsidiary's obligation to promptly indemnify
             the Parent hereunder.  Promptly after a Majority Owned
             Subsidiary or wholly-owned subsidiary thereof, as
             applicable, receives notice that a beneficiary of a Credit
             Support Obligation is seeking to enforce such Credit Support
             Obligation, the Majority Owned Subsidiary shall notify the
             Parent.  The Parent shall have the right, at its own
             expense, to contest the claim of such beneficiary.  If the
             Parent or the subsidiary of the Parent on whose behalf the
             Credit Support Obligation is given is contesting the claim
             of such beneficiary, the Majority Owned Subsidiary or
             wholly-owned subsidiary thereof, as applicable, will not
             perform under the relevant Credit Support Obligation unless
             and until, in the Majority Owned Subsidiary's reasonable
             judgment, the Majority Owned Subsidiary or wholly-owned
             subsidiary thereof, as applicable, is obligated under the
             terms of such Credit Support Obligation to perform.  Subject
             to the foregoing, any dispute between the Parent or the
             subsidiary of the Parent on whose behalf the Credit Support
             Obligation was given, on the one hand, and a beneficiary of
             a Credit Support Obligation, on the other, shall not affect
             the Parent's obligation to promptly indemnify the Majority
             Owned Subsidiary or its wholly-owned subsidiary, as
             applicable, hereunder.
PAGE
<PAGE>
        4.   Upon the request of a Majority Owned Subsidiary, the Parent
             may make loans and advances to the Majority Owned Subsidiary
             or its wholly-owned subsidiaries on a short-term, revolving
             credit basis, from time to time in such amounts as mutually
             determined by the Parent and the Majority Owned Subsidiary.
             The aggregate principal amount of such loans and advances
             shall be reflected on the books and records of the Majority
             Owned Subsidiary (or wholly-owned subsidiary, as applicable)
             and the Parent.  All such loans and advances shall be on an
             unsecured basis unless specifically provided otherwise in
             loan documents executed at that time.  The Majority Owned
             Subsidiary or its wholly-owned subsidiaries, as applicable,
             shall pay interest on the aggregate unpaid principal amount
             of such loans from time to time outstanding at a rate
             ("Interest Rate") equal to the rate of the Commercial Paper
             Composite Rate for 90-day maturities as reported by Merrill
             Lynch Capital Markets, as an average of the last five
             business days of such Majority Owned Subsidiary's latest
             fiscal quarter then ended, plus twenty-five (25) basis
             points.  The Interest Rate shall be adjusted on the first
             business day of each fiscal quarter of such Majority Owned
             Subsidiary pursuant to the Interest Rate formula contained
             in the preceding sentence and shall be in effect for the
             entirety of such fiscal quarter.  Interest shall be computed
             on a 360-day basis.  The aggregate principal amount
             outstanding and accrued interest thereon shall be payable on
             demand.  The principal and accrued interest may be paid by
             the Majority Owned Subsidiaries or their wholly-owned
             subsidiaries, as applicable, at any time or from time to
             time, in whole or in part, without premium or penalty.  All
             payments shall be applied first to accrued interest and then
             to principal.  Principal and interest shall be payable in
             lawful money of the United States of America, in immediately
             available funds, at the principal office of the Parent or at
             such other place as the Parent may designate from time to
             time in writing to the Majority Owned Subsidiary.  The
             unpaid principal amount of any such borrowings, and accrued
             interest thereon, shall become immediately due and payable,
             without demand, upon the failure of the Majority Owned
             Subsidiary or its wholly-owned subsidiary, as applicable, to
             pay its debts as they become due, the insolvency of the
             Majority Owned Subsidiary or its wholly-owned subsidiary, as
             applicable, the filing by or against the Majority Owned
             Subsidiary or its wholly-owned subsidiary, as applicable, of
             any petition under the U.S. Bankruptcy Code (or the filing
             of any similar petition under the insolvency law of any
             jurisdiction), or the making by the Majority Owned
             Subsidiary or its wholly-owned subsidiary, as applicable, of
             an assignment or trust mortgage for the benefit of creditors
             or the appointment of a receiver, custodian or similar agent
             with respect to, or the taking by any such person of
             possession of, any property of the Majority Owned Subsidiary
             or its wholly-owned subsidiary, as applicable.  In case any
             payments of principal and interest shall not be paid when
PAGE
<PAGE>
             due, the Majority Owned Subsidiary or its wholly-owned
             subsidiary, as applicable, further promises to pay all cost
             of collection, including reasonable attorneys' fees.   

        5.   If the Parent makes a loan or provides other credit ("Credit
             Extension") to a Second Tier Majority Owned Subsidiary, the
             First Tier Majority Owned Subsidiary that owns the majority
             of the stock of such Second Tier Majority Owned Subsidiary
             hereby guarantees the Second Tier Majority Owned
             Subsidiary's obligations to the Parent thereunder.  Such
             guaranty shall be enforced only after the Parent, in its
             reasonable judgment, determines that the Second Tier
             Majority Owned Subsidiary is unable to fully perform its
             obligations under the Credit Extension.  If the Parent
             provides Credit Extension to a wholly-owned subsidiary of a
             Second Tier Majority Owned Subsidiary, the Second Tier
             Majority Owned Subsidiary hereby guarantees it wholly-owned
             subsidiary's obligations to the Parent thereunder and the
             First Tier Majority Owned Subsidiary that owns the majority
             of the stock of such Second Tier Majority Owned Subsidiary
             hereby guarantees the Second Tier Majority Owned
             Subsidiary's obligations to the Parent hereunder.  Such
             guaranty by the First Tier Majority Owned Subsidiary shall
             be enforced only after the Parent, in its reasonable
             judgment, determines that the Second Tier Majority Owned
             Subsidiary is unable to fully perform its guaranty
             obligation hereunder.  

        6.   All payments required to be made by a Majority Owned
             Subsidiary or its wholly-owned subsidiaries, as applicable,
             shall be made within two days after receipt of notice from
             the Parent. All payments required to be made by the Parent
             shall be made within two days after receipt of notice from
             the Majority Owned Subsidiary.  

        7.   This Agreement shall be governed by and construed in
             accordance with the laws of the Commonwealth of
             Massachusetts applicable to contracts made and performed
             therein.
PAGE
<PAGE>
             IN WITNESS WHEREOF, the parties have caused this Agreement
        to be executed by their duly authorized officers as of the date
        first above written.


                                      THERMO ELECTRON CORPORATION


                                      By:  _____________________________
                                           Melissa F.Riordan
                                      Title:    Treasurer


                                      THERMO SENTRON INC. 


                                      By:  _____________________________
                                           Lewis J.Ribich
                                      Title:    President




                                                EXHIBIT 10.6

              AMENDED AND RESTATED MASTER GUARANTEE REIMBURSEMENT
                               AND LOAN AGREEMENT


             This AGREEMENT is entered into as of the 9th day of
        December, 1997 by and among Thermedics Inc. (the "Parent") and
        those of its subsidiaries that join in this Agreement by
        executing the signature page hereto (the "Majority Owned
        Subsidiaries").

                                   WITNESSETH:

             WHEREAS, the Majority Owned Subsidiaries and their
        wholly-owned subsidiaries wish to enter into various financial
        transactions, such as convertible or nonconvertible debt, loans,
        and equity offerings, and other contractual arrangements with
        third parties (the "Underlying Obligations") and may provide
        credit support to, on behalf of or for the benefit of, other
        subsidiaries of the Parent ("Credit Support Obligations"); 

             WHEREAS, the Majority Owned Subsidiaries and the Parent
        acknowledge that the Majority Owned Subsidiaries and their
        wholly-owned subsidiaries may be unable to enter into many kinds
        of Underlying Obligations without a guarantee of their
        performance thereunder from the Parent (a "Parent Guarantee") or
        without obtaining Credit Support Obligations from other Majority
        Owned Subsidiaries;

             WHEREAS, the Majority Owned Subsidiaries and their
        wholly-owned subsidiaries may borrow funds from the Parent, and
        the Parent may loan funds or provide credit to the Majority Owned
        Subsidiaries and their wholly-owned subsidiaries, on a short-term
        and unsecured basis; and

             WHEREAS, the Parent is willing to consider continuing to
        issue Parent Guarantees and providing credit, and the Majority
        Owned Subsidiaries are willing to consider continuing to provide
        Credit Support Obligations and to borrow funds, on the terms and
        conditions set forth below;

             NOW, THEREFORE, in consideration of the foregoing and other
        good and valuable consideration, the receipt and sufficiency of
        which are hereby acknowledged by each party hereto, the parties
        agree as follows:

        1.   If the Parent provides a Parent Guarantee of an Underlying
             Obligation, and the beneficiary(ies) of the Parent Guarantee
             enforce the Parent Guarantee, or the Parent performs under
             the Parent Guarantee for any other reason, then the Majority
             Owned Subsidiary that is obligated, either directly or
             indirectly through a wholly-owned subsidiary, under such
             Underlying Obligation shall indemnify and save harmless the
             Parent from any liability, cost, expense or damage
             (including reasonable attorneys' fees) suffered by the
PAGE
<PAGE>
             Parent as a result of the Parent Guarantee.  If a Majority
             Owned Subsidiary or a wholly-owned subsidiary thereof
             provides a Credit Support Obligation for any subsidiary of
             the Parent, other than a subsidiary of such Majority Owned
             Subsidiary, and the beneficiary(ies) of the Credit Support
             Obligation enforce the Credit Support Obligation, or the
             Majority Owned Subsidiary or its wholly-owned subsidiary  
             performs under the Credit Support Obligation for any other
             reason, then the Parent shall indemnify and save harmless
             the Majority Owned Subsidiary or its wholly-owned
             subsidiary, as applicable, from any liability, cost, expense
             or damage (including reasonable attorneys' fees) suffered by
             the Majority Owned Subsidiary or its wholly-owned
             subsidiary, as applicable, as a result of the Credit Support
             Obligation.  Without limiting the foregoing, Credit Support
             Obligations include the deposit of funds by a Majority Owned
             Subsidiary or a wholly-owned subsidiary thereof in a credit
             arrangement with a banking facility whereby such funds are
             available to the banking facility as collateral for
             overdraft obligations of other Majority Owned Subsidiaries
             or their subsidiaries also participating in the credit
             arrangement with such banking facility.

        2.   For purposes of this Agreement, the term "guarantee" shall
             include not only a formal guarantee of an obligation, but
             also any other arrangement where the Parent is liable for
             the obligations of a Majority Owned Subsidiary or its
             wholly-owned subsidiaries.  Such other arrangements include
             (a) representations, warranties and/or covenants or other
             obligations joined in by the Parent, whether on a joint or
             joint and several basis, for the benefit of the Majority
             Owned Subsidiary or its wholly-owned subsidiaries and (b)
             responsibility of the Parent by operation of law for the
             acts and omissions of the Majority Owned Subsidiary or its
             wholly-owned subsidiaries, including controlling person
             liability under securities and other laws.

        3.   Promptly after the Parent receives notice that a beneficiary
             of a Parent Guarantee is seeking to enforce such Parent
             Guarantee, the Parent shall notify the Majority Owned
             Subsidiary(s) obligated, either directly or indirectly
             through a wholly-owned subsidiary, under the relevant
             Underlying Obligation.  Such Majority Owned Subsidiary(s) or
             wholly-owned subsidiary thereof, as applicable, shall have
             the right, at its own expense, to contest the claim of such
             beneficiary.  If a Majority Owned Subsidiary or wholly-owned
             subsidiary thereof, as applicable, is contesting the claim
             of such beneficiary, the Parent will not perform under the
             relevant Parent Guarantee unless and until, in the Parent's
             reasonable judgment, the Parent is obligated under the terms
             of such Parent Guarantee to perform.  Subject to the
             foregoing, any dispute between a Majority Owned Subsidiary
             or wholly-owned subsidiary thereof, as applicable, and a
             beneficiary of a Parent Guarantee shall not affect such
PAGE
<PAGE>
             Majority Owned Subsidiary's obligation to promptly indemnify
             the Parent hereunder.  Promptly after a Majority Owned
             Subsidiary or wholly-owned subsidiary thereof, as
             applicable, receives notice that a beneficiary of a Credit
             Support Obligation is seeking to enforce such Credit Support
             Obligation, the Majority Owned Subsidiary shall notify the
             Parent.  The Parent shall have the right, at its own
             expense, to contest the claim of such beneficiary.  If the
             Parent or the subsidiary of the Parent on whose behalf the
             Credit Support Obligation is given is contesting the claim
             of such beneficiary, the Majority Owned Subsidiary or
             wholly-owned subsidiary thereof, as applicable, will not
             perform under the relevant Credit Support Obligation unless
             and until, in the Majority Owned Subsidiary's reasonable
             judgment, the Majority Owned Subsidiary or wholly-owned
             subsidiary thereof, as applicable, is obligated under the
             terms of such Credit Support Obligation to perform.  Subject
             to the foregoing, any dispute between the Parent or the
             subsidiary of the Parent on whose behalf the Credit Support
             Obligation was given, on the one hand, and a beneficiary of
             a Credit Support Obligation, on the other, shall not affect
             the Parent's obligation to promptly indemnify the Majority
             Owned Subsidiary or its wholly-owned subsidiary, as
             applicable, hereunder.  

        4.   Upon the request of a Majority Owned Subsidiary, the Parent
             may make loans and advances to the Majority Owned Subsidiary
             or its wholly-owned subsidiaries on a short-term, revolving
             credit basis, from time to time in such amounts as mutually
             determined by the Parent and the Majority Owned Subsidiary.
             The aggregate principal amount of such loans and advances
             shall be reflected on the books and records of the Majority
             Owned Subsidiary (or wholly-owned subsidiary, as applicable)
             and the Parent.  All such loans and advances shall be on an
             unsecured basis unless specifically provided otherwise in
             loan documents executed at that time.  The Majority Owned
             Subsidiary or its wholly-owned subsidiaries, as applicable,
             shall pay interest on the aggregate unpaid principal amount
             of such loans from time to time outstanding at a rate
             ("Interest Rate") equal to the rate of the Commercial Paper
             Composite Rate for 90-day maturities as reported by Merrill
             Lynch Capital Markets, as an average of the last five
             business days of such Majority Owned Subsidiary's latest
             fiscal quarter then ended, plus twenty-five (25) basis
             points.  The Interest Rate shall be adjusted on the first
             business day of each fiscal quarter of such Majority Owned
             Subsidiary pursuant to the Interest Rate formula contained
             in the preceding sentence and shall be in effect for the
             entirety of such fiscal quarter.  Interest shall be computed
             on a 360-day basis.  The aggregate principal amount
             outstanding and accrued interest thereon shall be payable on
             demand.  The principal and accrued interest may be paid by
             the Majority Owned Subsidiaries or their wholly-owned
             subsidiaries, as applicable, at any time or from time to
PAGE
<PAGE>
             time, in whole or in part, without premium or penalty.  All
             payments shall be applied first to accrued interest and then
             to principal.  Principal and interest shall be payable in
             lawful money of the United States of America, in immediately
             available funds, at the principal office of the Parent or at
             such other place as the Parent may designate from time to
             time in writing to the Majority Owned Subsidiary.  The
             unpaid principal amount of any such borrowings, and accrued
             interest thereon, shall become immediately due and payable,
             without demand, upon the failure of the Majority Owned
             Subsidiary or its wholly-owned subsidiary, as applicable, to
             pay its debts as they become due, the insolvency of the
             Majority Owned Subsidiary or its wholly-owned subsidiary, as
             applicable, the filing by or against the Majority Owned
             Subsidiary or its wholly-owned subsidiary, as applicable, of
             any petition under the U.S. Bankruptcy Code (or the filing
             of any similar petition under the insolvency law of any
             jurisdiction), or the making by the Majority Owned
             Subsidiary or its wholly-owned subsidiary, as applicable, of
             an assignment or trust mortgage for the benefit of creditors
             or the appointment of a receiver, custodian or similar agent
             with respect to, or the taking by any such person of
             possession of, any property of the Majority Owned Subsidiary
             or its wholly-owned subsidiary, as applicable.  In case any
             payments of principal and interest shall not be paid when
             due, the Majority Owned Subsidiary or its wholly-owned
             subsidiary, as applicable, further promises to pay all cost
             of collection, including reasonable attorneys' fees.   

        5.   All payments required to be made by a Majority Owned
             Subsidiary or its wholly-owned subsidiaries, as applicable,
             shall be made within two days after receipt of notice from
             the Parent. All payments required to be made by the Parent
             shall be made within two days after receipt of notice from
             the Majority Owned Subsidiary.  

        6.   This Agreement shall be governed by and construed in
             accordance with the laws of the Commonwealth of
             Massachusetts applicable to contracts made and performed
             therein.
PAGE
<PAGE>
             IN WITNESS WHEREOF, the parties have caused this Agreement
        to be executed by their duly authorized officers as of the date
        first above written.


                                      THERMEDICS INC.


                                      By:  _____________________________
                                           John W.Wood Jr.
                                      Title:    President


                                      THERMO SENTRON INC. 


                                      By:  _____________________________
                                           Lewis J.Ribich
                                      Title:    President





                                                        EXHIBIT 10.11

                               THERMO SENTRON INC.
                     RESTATED STOCK HOLDING ASSISTANCE PLAN


        SECTION 1.   Purpose.

             The purpose of this Plan is to benefit Thermo Sentron Inc.
        (the "Company") and its stockholders by encouraging Key Employees
        to acquire and maintain share ownership in the Company, by
        increasing such employees' proprietary interest in promoting the
        growth and performance of the Company and its subsidiaries and by
        providing for the implementation of the Stock Holding Policy.  

        SECTION 2.     Definitions.

             The following terms, when used in the Plan, shall have the
        meanings set forth below:

             Committee:   The Human Resources Committee of the Board of
        Directors of the Company as appointed from time to time.

             Common Stock:   The common stock of the Company and any
        successor thereto.

             Company:   Thermo Sentron Inc., a Delaware corporation.

             Stock Holding Policy:   The Stock Holding Policy of the
        Company, as adopted by the Committee and as in effect from time
        to time.

             Key Employee:   Any employee of the Company or any of its
        subsidiaries, including any officer or member of the Board of
        Directors who is also an employee, as designated by the
        Committee, and who, in the judgment of the Committee, will be in
        a position to contribute significantly to the attainment of the
        Company's strategic goals and long-term growth and prosperity.

             Loans:   Loans extended to Key Employees by the Company
        pursuant to this Plan.

             Plan:   The Thermo Sentron Inc. Stock Holding Assistance
        Plan, as amended from time to time.

        SECTION 3.     Administration.

             The Plan and the Stock Holding Policy shall be administered
        by the Committee, which shall have authority to interpret the
        Plan and the Stock Holding Policy and, subject to their
        provisions, to prescribe, amend and rescind any rules and
        regulations and to make all other determinations necessary or
        desirable for the administration thereof.  The Committee's
        interpretations and decisions with regard to the Plan and the
        Stock Holding Policy and such rules and regulations as may be
PAGE
<PAGE>
        established thereunder shall be final and conclusive.  The
        Committee may correct any defect or supply any omission or
        reconcile any inconsistency in the Plan or the Stock Holding
        Policy, or in any Loan in the manner and to the extent the
        Committee deems desirable to carry it into effect.  No member of
        the Committee shall be liable for any action or omission in
        connection with the Plan or the Stock Holding Policy that is made
        in good faith.

        SECTION 4.     Loans and Loan Limits.

             The Committee has determined that the provision of Loans
        from time to time to Key Employees in such amounts as to cause
        such Key Employees to comply with the Stock Holding Policy is, in
        the judgment of the Committee, reasonably expected to benefit the
        Company and authorizes the Company to extend Loans from time to
        time to Key Employees in such amounts as may be requested by such
        Key Employees in order to comply with the Stock Holding Policy.
        Such Loans may be used solely for the purpose of acquiring Common
        Stock (other than upon the exercise of stock options or under
        employee stock purchase plans) in open market transactions or
        from the Company.

             Each Loan shall be full recourse and evidenced by a
        non-interest bearing promissory note substantially in the form
        attached hereto as Exhibit A (the "Note") and maturing in
        accordance with the provisions of Section 6 hereof, and
        containing such other terms and conditions, which are not
        inconsistent with the provisions of the Plan and the Stock
        Holding Policy, as the Committee shall determine in its sole and
        absolute discretion.

        SECTION 5.     Federal Income Tax Treatment of Loans.

             For federal income tax purposes, interest on Loans shall be
        imputed on any interest free Loan extended under the Plan.  A Key
        Employee shall be deemed to have paid the imputed interest to the
        Company and the Company shall be deemed to have paid said imputed
        interest back to the Key Employee as additional compensation.
        The deemed interest payment shall be taxable to the Company as
        income, and may be deductible to the Key Employee to the extent
        allowable under the rules relating to investment interest.  The
        deemed compensation payment to the Key Employee shall be taxable
        to the employee and deductible to the Company, but shall also be
        subject to employment taxes such as FICA and FUTA.

        SECTION 6.     Maturity of Loans.

             Each Loan to a Key Employee hereunder shall be due and
        payable on demand by the Company.  If no such demand is made,
        then each Loan shall mature and the principal thereof shall
        become due and payable on the fifth anniversary of the date of
        the Loan, provided that the Committee may, in its sole and
        absolute discretion, authorize such other maturity and repayment
PAGE
<PAGE>
        schedule as the Committee may determine.  Each Loan shall also
        become immediately due and payable in full, without demand, upon
         the occurrence of any of the events set forth in the Note;
        provided that the Committee may, in its sole and absolute
        discretion, authorize an extension of the time for repayment of a
        Loan upon such terms and conditions as the Committee may
        determine.

        SECTION 7.     Amendment and Termination of the Plan.

             The Committee may from time to time alter or amend the Plan
        or the Stock Holding Policy in any respect, or terminate the Plan
        or the Stock Holding Policy at any time.  No such amendment or
        termination, however, shall alter or otherwise affect the terms
        and conditions of any Loan then outstanding to Key Employee
        without such Key Employee's written consent, except as otherwise
        provided herein or in the promissory note evidencing such Loan.

        SECTION 8.     Miscellaneous Provisions.

             (a)  No employee or other person shall have any claim or
        right to receive a Loan under the Plan, and no employee shall
        have any right to be retained in the employ of the Company due to
        his or her participation in the Plan.

             (b)  No Loan shall be made hereunder unless counsel for the
        Company shall be satisfied that such Loan will be in compliance
        with applicable federal, state and local laws.

             (c)  The expenses of the Plan shall be borne by the Company.

             (d)  The Plan shall be unfunded, and the Company shall not
        be required to establish any special or separate fund or to make
        any other segregation of assets to assure the making of any Loan
        under the Plan.

             (e)  Except as otherwise provided in Section 7 hereof, by
        accepting any Loan under the Plan, each Key Employee shall be
        conclusively deemed to have indicated his acceptance and
        ratification of, and consent to, any action taken under the Plan
        or the Stock Holding Policy by the Company, the Board of
        Directors of the Company or the Committee.

             (f)  The appropriate officers of the Company shall cause to
        be filed any reports, returns or other information regarding
        Loans hereunder, as may be required by any applicable statute,
        rule or regulation.

        SECTION 9.     Effective Date.

             The Plan and the Stock Holding Policy shall become effective
        upon approval and adoption by the Committee.
PAGE
<PAGE>
                               EXHIBIT A TO STOCK HOLDING ASSISTANCE PLAN


                               THERMO SENTRON INC.

                                 Promissory Note



        $_________                                                       
                                                Dated:____________


             For value  received, ________________,  an individual  whose
        residence is located at _______________________ (the "Employee"),
        hereby promises to pay to Thermo Sentron Inc. (the "Company"), or
        assigns, ON DEMAND,  but in any  case on or  before [insert  date
        which  is  the  fifth  anniversary  of  date  of  issuance]  (the
        "Maturity Date"), the  principal sum  of [loan  amount in  words]
        ($_______), or such part thereof as then remains unpaid,  without
        interest.   Principal shall  be payable  in lawful  money of  the
        United States of America, in immediately available funds, at  the
        principal office of  the Company or  at such other  place as  the
        Company may  designate  from  time  to time  in  writing  to  the
        Employee. 

             Unless the Company has already made a demand for payment  in
        full of this Note,  the Employee agrees to  repay to the  Company
        from the Employee's annual cash incentive compensation  (referred
        to as  bonus), beginning  with the  first such  bonus payment  to
        occur after the date of  this Note and on  each of the next  four
        bonus payment dates  occurring prior to  the Maturity Date,  such
        amount as may be designated by the Company. Any amount  remaining
        unpaid under this Note shall be  due and payable on the  Maturity
        Date.

             This Note may be prepaid at  any time or from time to  time,
        in whole  or  in part,  without  any  premium or  penalty.    The
        Employee acknowledges and agrees that the Company has advanced to
        the Employee the principal  amount of this  Note pursuant to  the
        Company's Stock Holding Assistance Plan,  and that all terms  and
        conditions of such Plan are incorporated herein by reference.  

             The unpaid principal amount of this Note shall be and become
        immediately due  and payable  without notice  or demand,  at  the
        option of  the  Company,  upon  the  occurrence  of  any  of  the
        following events:

                  (a)  the termination of the Employee's employment  with
             the Company, with or without cause, for any reason or for no
             reason;

                  (b)  the death or disability of the Employee;
PAGE
<PAGE>
                  (c)  the failure  of the  Employee to  pay his  or  her
             debts as they  become due, the  insolvency of the  Employee,
             the filing by or against the Employee of any petition  under
             the United  States Bankruptcy  Code (or  the filing  of  any
             similar  petition   under   the  insolvency   law   of   any
             jurisdiction),  or  the  making   by  the  Employee  of   an
             assignment or trust mortgage for the benefit of creditors or
             the appointment of  a receiver, custodian  or similar  agent
             with respect  to,  or  the  taking by  any  such  person  of
             possession of, any property of the Employee; or

                  (d)  the issuance of any writ of attachment, by trustee
             process or otherwise, or any restraining order or injunction
             not removed, repealed or  dismissed within thirty (30)  days
             of issuance, against or affecting the person or property  of
             the Employee or any liability or obligation of the  Employee
             to the Company.

             In case any payment  herein provided for  shall not be  paid
        when due,  the Employee  further  promises to  pay all  costs  of
        collection, including all reasonable attorneys' fees.

             No  delay  or  omission  on  the  part  of  the  Company  in
        exercising any right hereunder shall operate as a waiver of  such
        right or of any other right of the Company, nor shall any  delay,
        omission or waiver  on any  one occasion be  deemed a  bar to  or
        waiver of the  same or any  other right on  any future  occasion.
        The  Employee  hereby  waives  presentment,  demand,  notice   of
        prepayment,  protest  and  all  other  demands  and  notices   in
        connection with the delivery, acceptance, performance, default or
        enforcement of this Note.  The undersigned hereby assents to  any
        indulgence  and  any  extension  of  time  for  payment  of   any
        indebtedness  evidenced  hereby  granted  or  permitted  by   the
        Company.  

             This Note  has been  made pursuant  to the  Company's  Stock
        Holding Assistance Plan and shall be governed by and construed in
        accordance with, such Plan and the laws of the State of  Delaware
        and shall have the effect of a sealed instrument.


                                      _______________________________

                                      Employee Name: _________________


        ________________________
        Witness




                                                                   Exhibit 13




















                               THERMO SENTRON INC.

                        Consolidated Financial Statements

                                      1997
PAGE
<PAGE>
    Thermo Sentron Inc.                             1997 Financial Statements

                        Consolidated Statement of Income

    (In thousands except
    per share amounts)                      1997         1996          1995
    -----------------------------------------------------------------------
    Revenues (Notes 8 and 10)            $78,695      $70,027       $67,474
                                         -------      -------       -------

    Costs and Operating Expenses:
      Cost of revenues (Note 8)           47,564       41,863        41,017
      Selling, general, and
        administrative expenses (Note 8)  20,533       19,075        17,371
      Research and development expenses    1,888        1,881         1,920
                                         -------      -------       -------
                                          69,985       62,819        60,308
                                         -------      -------       -------

    Operating Income                       8,710        7,208         7,166

    Interest Income                        2,089        1,469           150
    Interest Expense                        (338)        (551)         (904)
    Other Income (Expense)                   175          184           (37)
                                         -------      -------       -------
    Income Before Provision for Income
      Taxes                               10,636        8,310         6,375
    Provision for Income Taxes (Note 6)    4,148        3,158         2,545
                                         -------      -------       -------
    Net Income                           $ 6,488      $ 5,152       $ 3,830
                                         =======      =======       =======
    Basic and Diluted Earnings per
      Share (Note 11)                    $   .66      $   .56       $   .55
                                         =======      =======       =======
    Weighted Average Shares (Note 11):
      Basic                                9,875        9,156         7,027
                                         =======      =======       =======
      Diluted                              9,878        9,162         7,027
                                         =======      =======       =======

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




                                         2PAGE
<PAGE>
    Thermo Sentron Inc.                             1997 Financial Statements

                           Consolidated Balance Sheet

    (In thousands)                                        1997          1996
    ------------------------------------------------------------------------
    Assets
    Current Assets:
      Cash and cash equivalents                       $ 30,283      $ 28,226
      Available-for-sale investments, at quoted
        market value (amortized cost of $9,660 and
        $6,582; Note 2)                                  9,686         6,594
      Accounts receivable, less allowances of
        $1,083 and $1,812                               18,345        17,296
      Inventories                                       11,353        11,627
      Prepaid income taxes (Note 6)                      1,407         1,524
      Prepaid expenses                                     459           594
                                                      --------      --------
                                                        71,533        65,861
                                                      --------      --------
    Property, Plant, and Equipment, at Cost, Net         2,446         2,089
                                                      --------      --------
    Other Assets                                         4,074         3,522
                                                      --------      --------
    Cost in Excess of Net Assets of Acquired
      Companies (Notes 3 and 6)                         37,048        35,714
                                                      --------      --------
                                                      $115,101      $107,186
                                                      ========      ========
























                                         3PAGE
<PAGE>
    Thermo Sentron Inc.                             1997 Financial Statements

                     Consolidated Balance Sheet (continued)

    (In thousands except share amounts)                   1997          1996
    ------------------------------------------------------------------------
    Liabilities and Shareholders' Investment
    Current Liabilities:
      Notes payable (Notes 3 and 9)                   $  5,122      $  3,596
      Accounts payable                                   6,861         6,898
      Accrued payroll and employee benefits              4,172         4,056
      Accrued income taxes                               3,036         2,686
      Customer deposits                                  2,307         1,936
      Other accrued expenses                             4,075         4,532
      Due to parent company and affiliated companies       955           763
                                                      --------      --------
                                                        26,528        24,467
                                                      --------      --------
    Deferred Income Taxes (Note 6)                         642           354
                                                      --------      --------

    Commitments (Note 7)

    Shareholders' Investment (Notes 4 and 5):
      Common stock, $.01 par value, 30,000,000
        shares authorized; 9,875,000 shares issued          99            99
      Capital in excess of par value                    77,072        77,072
      Retained earnings                                 11,640         5,152
      Treasury stock at cost, 9,000 shares in 1997         (95)            -
      Cumulative translation adjustment                   (802)           34
      Net unrealized gain on available-for-sale
        investments (Note 2)                                17             8
                                                      --------      --------
                                                        87,931        82,365
                                                      --------      --------
                                                      $115,101      $107,186
                                                      ========      ========


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


                                         4PAGE
<PAGE>
    Thermo Sentron Inc.                             1997 Financial Statements

                      Consolidated Statement of Cash Flows

    (In thousands)                           1997         1996          1995
    ------------------------------------------------------------------------
    Operating Activities:
      Net income                         $  6,488     $  5,152      $  3,830
      Adjustments to reconcile net
        income to net cash provided by
        operating activities:
          Depreciation and amortization     1,905        1,865         1,518
          Provision for losses on
            accounts receivable                88          217           229
          Deferred income tax (benefit)
            expense                           621         (485)          436
          Gain on sale of investments           -          (37)            -
          Changes in current accounts,
            excluding the effects of
            acquisitions:
              Accounts receivable            (990)      (3,783)          539
              Inventories                      53         (959)         (607)
              Other current assets            (23)           4             8
              Accounts payable                280        1,018         1,975
              Other current liabilities      (490)         553        (1,709)
          Other                                 -           (4)           44
                                         --------     --------      --------
    Net cash provided by operating
      activities                            7,932        3,541         6,263
                                         --------     --------      --------

    Investing Activities:
      Acquisitions, net of cash
        acquired (Note 3)                  (2,860)      (4,323)            -
      Acquisition of product line
        (Note 3)                                -       (4,437)            -
      Purchases of available-for-sale
        investments                        (8,009)     (11,511)            -
      Proceeds from sale and maturities
        of available-for-sale investments   5,000        5,037             -
      Purchases of property, plant,
        and equipment                        (707)        (872)         (701)
      Proceeds from sale of property, 
        plant, and equipment                   75          157            90
      Other                                  (150)        (158)            -
                                         --------     --------      --------
    Net cash used in investing
      activities                         $ (6,651)    $(16,107)     $   (611)
                                         --------     --------      --------


                                         5PAGE
<PAGE>
    Thermo Sentron Inc.                             1997 Financial Statements

                Consolidated Statement of Cash Flows (continued)
                                   

    (In thousands)                             1997        1996        1995
    -----------------------------------------------------------------------
    Financing Activities:
      Net proceeds from issuance of Company
        common stock (Note 4)               $     -     $42,335     $     -
      Net increase (decrease) in short-term
        borrowings                            1,721      (2,569)          -
      Repayment of long-term obligation           -      (2,176)       (925)
      Repurchases of Company common stock       (95)          -           -
      Net transfer to parent company              -           -      (3,526)
                                            -------     -------     -------
    Net cash provided by (used in)
      financing activities                    1,626      37,590      (4,451)
                                            -------     -------     -------
    Exchange Rate Effect on Cash               (850)        190        (278)
                                            -------     -------     -------
    Increase in Cash and Cash Equivalents     2,057      25,214         923
    Cash and Cash Equivalents at Beginning
      of Year                                28,226       3,012       2,089
                                            -------     -------     -------
    Cash and Cash Equivalents at End of
      Year                                  $30,283     $28,226     $ 3,012
                                            =======     =======     =======

    Cash Paid For:
      Interest                              $   279     $   635     $   804
      Income taxes                          $ 3,245     $   939     $ 1,530

    Noncash Activities (Note 3):
      Fair value of assets of acquired
        companies                           $ 4,544     $ 6,510     $     -
      Cash paid for acquired companies       (3,043)     (4,464)          -
                                            -------     -------     -------
        Liabilities assumed of acquired
          companies                         $ 1,501     $ 2,046     $     -
                                            =======     =======     =======


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







                                         6PAGE
<PAGE>
    Thermo Sentron Inc.                             1997 Financial Statements

               Consolidated Statement of Shareholders' Investment

    (In thousands)                          1997         1996          1995
    -----------------------------------------------------------------------
    Common Stock, $.01 Par Value
      Balance at beginning of year       $    99      $     -       $     -
      Issuance of Company common
        stock (Note 4)                         -           29             -
      Capitalization of Company                -           70             -
                                         -------      -------       -------
      Balance at end of year                  99           99             -
                                         -------      -------       -------
                                  
    Capital in Excess of Par Value
      Balance at beginning of year        77,072            -             -
      Issuance of Company common
        stock (Note 4)                         -       42,306             -
      Capitalization of Company                -       34,766             -
                                         -------      -------       -------
      Balance at end of year              77,072       77,072             -
                                         -------      -------       -------
    Retained Earnings
      Balance at beginning of year         5,152            -             -
      Net income                           6,488        5,152             -
                                         -------      -------       -------
      Balance at end of year              11,640        5,152             -
                                         -------      -------       -------
    Treasury Stock
      Balance at beginning of year             -            -             -
      Repurchases of Company common
        stock                                (95)           -             -
                                         -------      -------       -------
      Balance at end of year                 (95)           -             -
                                         -------      -------       -------
    Cumulative Translation Adjustment
      Balance at beginning of year            34         (149)           68
      Translation adjustment                (836)         183          (217)
                                         -------      -------       -------
      Balance at end of year                (802)          34          (149)
                                         -------      -------       -------

    Net Unrealized Gain on Available-
      for-sale Investments
      Balance at beginning of year             8            -             -
      Change in unrealized gain on
        available-for-sale investments         9            8             -
                                         -------      -------       -------
      Balance at end of year             $    17      $     8       $     -
                                         -------      -------       -------

                                         7PAGE
<PAGE>
    Thermo Sentron Inc.                             1997 Financial Statements

         Consolidated Statement of Shareholders' Investment (continued)
                                     (continued)

    (In thousands)                         1997          1996           1995
    ------------------------------------------------------------------------
    Net Parent Company Investment
      Balance at beginning of year     $      -      $ 34,836       $ 34,532
      Net income prior to
        capitalization of Company             -             -          3,830
      Net transfer to parent company          -             -         (3,526)
      Capitalization of Company               -       (34,836)             -
                                       --------      --------       --------
      Balance at end of year                  -             -         34,836
                                       --------      --------       --------
    Total Shareholders' Investment     $ 87,931      $ 82,365       $ 34,687
                                       ========      ========       ========


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











                                         8PAGE
<PAGE>
    Thermo Sentron Inc.                             1997 Financial Statements

                   Notes to Consolidated Financial Statements

    1.  Nature of Operations and Summary of Significant Accounting Policies

    Nature of Operations
        Thermo Sentron Inc. (the Company) designs, develops, manufactures,
    and sells high-speed precision-weighing and inspection equipment for
    industrial production and packaging lines. The Company serves two
    principal markets: packaged goods and bulk materials. Products for the
    packaged-goods market represented 36% of the Company's revenues in 1997
    and are sold to customers in the food-processing, pharmaceutical,
    mail-order, and other diverse industries. Products for the bulk-materials
    market represented 64% of the Company's revenues in 1997 and are sold
    primarily to customers in the mining and material-processing industries,
    as well as to electric utilities, chemical, and other manufacturing
    companies.

    Relationship with Thermedics Inc. and Thermo Electron Corporation
        On March 16, 1994, Thermedics Inc. acquired the Ramsey Technology
    Inc. business (Ramsey, or the Predecessor) of Baker Hughes Incorporated.
    The Company was incorporated in November 1995 as a wholly owned
    subsidiary of Thermedics. On January 2, 1996, Thermedics transferred to
    the Company the assets, liabilities, and businesses of Ramsey and certain
    related companies in exchange for 7,000,000 shares of the Company's
    common stock. Thermedics is a 58%-owned subsidiary of Thermo Electron
    Corporation. As of January 3, 1998, Thermedics and Thermo Electron owned
    a total of 7,676,900 shares of the Company's common stock, representing
    78% of such stock outstanding.

    Principles of Consolidation
        The accompanying financial statements include the accounts of the
    Company and its wholly owned subsidiaries. All material intercompany
    accounts and transactions have been eliminated.

    Fiscal Year
        The Company has adopted a fiscal year ending the Saturday nearest
    December 31. References to 1997, 1996, and 1995 are for the fiscal years
    ended January 3, 1998, December 28, 1996, and December 30, 1995,
    respectively. Fiscal year 1997 included 53 weeks; 1996 and 1995 each
    included 52 weeks.

    Revenue Recognition
        The Company recognizes revenues upon shipment of its products. The
    Company provides a reserve for its estimate of warranty and installation
    costs at the time of shipment.

    Stock-based Compensation Plans
        The Company applies Accounting Principles Board Opinion (APB) No. 25,
    "Accounting for Stock Issued to Employees," and related interpretations
    in accounting for its stock-based compensation plans (Note 5).
    Accordingly, no accounting recognition is given to stock options granted
    at fair market value until they are exercised. Upon exercise, net
    proceeds, including tax benefits realized, are credited to equity.

                                         9PAGE
<PAGE>
    Thermo Sentron Inc.                             1997 Financial Statements

                   Notes to Consolidated Financial Statements

    1.  Nature of Operations and Summary of Significant Accounting Policies
        (continued)

    Income Taxes
        In the periods prior to its initial public offering, the Company was
    included in Thermedics' consolidated federal and certain state income tax
    returns. Subsequent to the Company's initial public offering in April
    1996, Thermedics' equity ownership of the company was reduced below 80%
    and, as a result, the Company is required to file its own federal income
    tax return.
        In accordance with Statement of Financial Accounting Standards (SFAS)
    No. 109, "Accounting for Income Taxes," the Company recognizes deferred
    income taxes based on the expected future tax consequences of differences
    between the financial statement basis and the tax basis of assets and
    liabilities, calculated using enacted tax rates in effect for the year in
    which the differences are expected to be reflected in the tax return.

    Earnings per Share
        During the fourth quarter of 1997, the Company adopted SFAS No. 128,
    "Earnings per Share" (Note 11). As a result, all previously reported
    earnings per share have been restated, however, basic and diluted
    earnings per share equals the Company's previously reported earnings per
    share for the 1996 and 1995 periods presented. Basic earnings per share
    have been computed by dividing net income by the weighted average number
    of shares outstanding during the year. For periods prior to the Company's
    January 1996 capitalization, shares issued in connection with such
    capitalization have been shown as outstanding for purposes of computing
    earnings per share. Diluted earnings per share have been computed
    assuming the exercise of stock options, as well as their related income
    tax effect.

    Cash and Cash Equivalents
        At year-end 1997 and 1996, $26,229,000 and $24,732,000, respectively,
    of the Company's cash equivalents were invested in a repurchase agreement
    with Thermo Electron. Under this agreement, the Company in effect lends
    excess cash to Thermo Electron, which Thermo Electron collateralizes with
    investments principally consisting of corporate notes, commercial paper,
    U.S. government-agency securities, money market funds, and other
    marketable equity securities, in the amount of at least 103% of such
    obligation. The Company's funds subject to the repurchase agreement are
    readily convertible into cash by the Company. The repurchase agreement
    earns a rate based on the 90-day Commercial Paper Composite Rate plus 25
    basis points, set at the beginning of each quarter. At year-end 1997 and
    1996, the Company's cash equivalents also included investments in
    short-term certificates of deposit of the Company's foreign operations,
    which have an original maturity of three months or less. Cash equivalents
    are carried at cost, which approximates market value.


                                        10PAGE
<PAGE>
    Thermo Sentron Inc.                             1997 Financial Statements

                   Notes to Consolidated Financial Statements

    1.  Nature of Operations and Summary of Significant Accounting Policies
        (continued)

    Inventories
        Inventories are stated at the lower of cost (on a first-in, first-
    out, or weighted average basis) or market value and include materials,
    labor, and manufacturing overhead. The components of inventories are as
    follows:

    (In thousands)                                         1997        1996
    -----------------------------------------------------------------------
    Raw materials                                       $ 3,937     $ 4,126
    Work in process                                       2,516       2,550
    Finished goods                                        4,900       4,951
                                                        -------     -------
                                                        $11,353     $11,627
                                                        =======     =======

    Property, Plant, and Equipment
        The costs of additions and improvements are capitalized, while
    maintenance and repairs are charged to expense as incurred. The Company
    provides for depreciation and amortization using the straight-line and
    declining balance methods over the estimated useful lives of the property
    as follows: buildings, 30 years; machinery and equipment, 3 to 12 years;
    and leasehold improvements, the shorter of the term of the lease or the
    life of the asset. Property, plant, and equipment consists of the
    following:

    (In thousands)                                        1997        1996
    -----------------------------------------------------------------------
    Land                                                $  187      $  110
    Buildings                                              495         192
    Machinery, equipment, and leasehold improvements     3,773       3,274
                                                        ------      ------
                                                         4,455       3,576
    Less: Accumulated depreciation and amortization      2,009       1,487
                                                        ------      ------
                                                        $2,446      $2,089
                                                        ======      ======

    Other Assets
        Other assets in the accompanying balance sheet consist primarily of
    acquired technology, which is amortized using the straight-line method
    over its estimated useful life of 15 years. Accumulated amortization was
    $430,000 and $165,000 at year-end 1997 and 1996, respectively.

    Cost in Excess of Net Assets of Acquired Companies
        The excess of cost over the fair value of net assets of acquired
    companies is amortized using the straight-line method over 40 years.
    Accumulated amortization was $3,440,000 and $2,517,000 at year-end 1997
    and 1996, respectively. The Company assesses the future useful life of


                                        11PAGE
<PAGE>
    Thermo Sentron Inc.                             1997 Financial Statements

                   Notes to Consolidated Financial Statements

    1.  Nature of Operations and Summary of Significant Accounting Policies
        (continued)

    this asset whenever events or changes in circumstances indicate that the
    current useful life has diminished. The Company considers the future
    undiscounted cash flows of the acquired businesses in assessing the
    recoverability of this asset. If impairment has occurred, any excess of
    carrying value over fair value is recorded as a loss.

    Foreign Currency
        All assets and liabilities of the Company's foreign subsidiaries are
    translated at year-end exchange rates, and revenues and expenses are
    translated at average exchange rates for the year in accordance with SFAS
    No. 52, "Foreign Currency Translation." Resulting translation adjustments
    are reflected as a separate component of shareholders' investment titled
    "Cumulative translation adjustment." Foreign currency transaction gains
    and losses are included in other income (expense) in the accompanying
    statement of income and are not material for the three years presented.

    Fair Value of Financial Instruments
        The Company's financial instruments consist mainly of cash and cash
    equivalents, available-for-sale investments, accounts receivable, notes
    payable, accounts payable, and due to parent company and affiliated
    companies. Available-for-sale investments are carried at fair value in
    the accompanying balance sheet (Note 2). The fair values were determined
    based on quoted market prices. The carrying amounts of the Company's
    remaining financial instruments approximate fair value due to their
    short-term nature.

    Use of Estimates
        The preparation of financial statements in conformity with generally
    accepted accounting principles requires management to make estimates and
    assumptions that affect the reported amounts of assets and liabilities,
    disclosure of contingent assets and liabilities at the date of the
    financial statements, and the reported amounts of revenues and expenses
    during the reporting period. Actual results could differ from those
    estimates.

    2.  Available-for-sale Investments

        In accordance with SFAS No. 115, "Accounting for Certain Investments
    in Debt and Equity Securities," the Company's debt securities are
    considered available-for-sale investments in the accompanying balance
    sheet and are carried at market value, with the difference between cost
    and market value, net of related tax effects, recorded currently as a
    component of shareholders' investment titled "Net unrealized gain on
    available-for-sale investments." The aggregate market value, cost

                                        12PAGE
<PAGE>
    Thermo Sentron Inc.                             1997 Financial Statements

                   Notes to Consolidated Financial Statements

    2.  Available-for-sale Investments (continued)

    basis, and gross unrealized gains of available-for-sale investments by
    major security type are as follows:

                                                                     Gross
                                              Market        Cost Unrealized
    (In thousands)                             Value       Basis      Gains
    ------------------------------------------------------------------------
    1997
    Corporate bonds                           $9,545      $9,519     $   26
    Other                                        141         141          -
                                              ------      ------     ------
                                              $9,686      $9,660     $   26
                                              ======      ======     ======

    1996
    Government-agency securities              $5,001      $4,995     $    6
    Corporate bonds                            1,522       1,516          6
    Other                                         71          71          -
                                              ------      ------     ------
                                              $6,594      $6,582     $   12
                                              ======      ======     ======

        Available-for-sale investments in the accompanying 1997 balance sheet
    have contractual maturities of one year or less.
        The cost of available-for-sale investments that were sold was based
    on specific identification in determining realized gains of $37,000
    recorded in other income (expense) in the accompanying 1996 statement of
    income.

    3.  Acquisitions

        In July 1997, the Company acquired Westerland Engineering Ltd. for
    $1,961,000 in cash. To finance this acquisition, the Company borrowed
    $1,961,000, denominated in British pounds sterling, from a bank, pursuant
    to a promissory note repaid in January 1998 and bearing interest at 
    7.94%. Westerland, a manufacturer of process-weighing and control
    equipment, is based in England.
        In February 1997, the Company acquired substantially all of the
    assets of RCC Industrial Electronics Pty. Limited (RCCI) for $1,082,000
    in cash and the assumption of certain liabilities. RCCI is an
    Australian-based manufacturer of in-motion checkweighers for the food and
    pharmaceutical industries.
        In April 1996, the Company purchased the assets of the solids
    flow-measurement product line of Endress + Hauser, Inc. (Endress +
    Hauser) for $4,437,000 in cash. The acquisition was financed with an
    advance from Thermo Electron that was repaid in April 1996.
        In January 1996, the Company acquired Hitech Electrocontrols Limited
    (Hitech), a U.K.-based manufacturer of metal-detection equipment and
    specialty checkweighing equipment for the baking industry, for $4,464,000


                                        13PAGE
<PAGE>
    Thermo Sentron Inc.                             1997 Financial Statements

                   Notes to Consolidated Financial Statements

    3.  Acquisitions (continued)

    in cash. The acquisition was financed with a credit facility, denominated
    in British pounds sterling, that was repaid in April 1996.
        These acquisitions have been accounted for using the purchase method
    of accounting, and their results of operations have been included in the
    accompanying financial statements from their respective dates of
    acquisition. The aggregate cost of Westerland, RCCI, and Hitech exceeded
    the estimated fair value of the acquired net assets by $7,209,000, which
    is being amortized over 40 years. Allocation of the purchase price was
    based on an estimate of the fair value of the net assets acquired. Pro
    forma data is not presented since these acquisitions were not material to
    the Company's results of operations.

    4.  Common Stock

        In April 1996, the Company sold 2,875,000 shares of its common stock
    in an initial public offering at $16.00 per share, for net proceeds of
    $42,335,000. The Company used part of those proceeds to repay
    approximately $12,600,000 in advances and short-term borrowings from
    Thermo Electron and third parties (Note 3).
        At January 3, 1998, the Company had reserved 825,000 unissued shares
    of its common stock for possible issuance under stock-based compensation
    plans.

    5.  Employee Benefit Plans

    Stock-based Compensation Plans

    Stock Option Plans
    ------------------
        In 1996, the Company adopted a stock-based compensation plan for its
    key employees, directors, and others, which permits the grant of a
    variety of stock and stock-based awards as determined by the human
    resources committee of the Company's Board of Directors (the Board
    Committee), including restricted stock, stock options, stock bonus
    shares, or performance-based shares. To date, only nonqualified stock
    options have been awarded under this plan. The option recipients and the
    terms of options granted under this plan are determined by the Board
    Committee. Options granted through the date of the Company's initial
    public offering became exercisable in September 1996, and subsequent
    grants became exercisable immediately. Options granted are subject to
    certain transfer restrictions and the right of the Company to repurchase
    shares issued upon exercise of the options at the exercise price, upon
    certain events. The restrictions and repurchase rights generally lapse
    ratably over a five- to ten-year period, depending on the term of the
    option, which generally ranges from ten to twelve years. Nonqualified
    stock options may be granted at any price determined by the Board
    Committee, although incentive stock options must be granted at not less
    than the fair market value of the Company's common stock on the date of
    grant. To date, all options have been granted at fair market value. The
    Company also has a directors' stock option plan, adopted in 1996, that
    provides for the grant of stock options to outside directors pursuant
                                        14PAGE
<PAGE>
    Thermo Sentron Inc.                             1997 Financial Statements

                   Notes to Consolidated Financial Statements

    5.  Employee Benefit Plans (continued)

    to a formula approved by the Company's shareholders. Options granted
    under this plan have the same general terms as options granted under the
    stock-based compensation plan described above, except that the
    restrictions and repurchase rights generally lapse ratably over a
    four-year period and the option term is five years. In addition to
    participating in the Company's stock-based compensation plans, certain
    officers and key employees may also participate in the stock-based
    compensation plans of Thermo Electron and Thermedics.
       A summary of the Company's stock option activity is as follows:

                                          1997                  1996
                                    -----------------    ------------------
                        
                                            Weighted               Weighted
                                   Number    Average     Number     Average
                                       of   Exercise         of    Exercise
    (Shares in thousands)          Shares      Price     Shares       Price
    -----------------------------------------------------------------------
    Options outstanding, beginning
      of year                         398     $14.12          -      $    -

        Granted                        201      12.52        398      14.12
        Forfeited                      (3)     14.00          -           -
                                    -----     ------      -----      ------
    Options outstanding, end of
      year                            596     $13.58        398      $14.12
                                    =====     ======      =====      ======
    Options exercisable               596     $13.58        398      $14.12
                                    =====     ======      =====      ======
    Options available for grant       204                   402
                                    =====                 =====


                                        15PAGE
<PAGE>
    Thermo Sentron Inc.                             1997 Financial Statements

                   Notes to Consolidated Financial Statements

    5.  Employee Benefit Plans (continued)

        A summary of the status of the Company's stock options at January 3,
    1998, is as follows:

                                         Options Outstanding and Exercisable
                                         -----------------------------------
                                                                   Weighted
                                         Number Weighted Average    Average
                                             of        Remaining   Exercise
    Range of Exercise Prices             Shares Contractual Life      Price
    ------------------------------------------------------------------------
    (Shares in thousands)
    $ 9.80 - $11.35                          42       10.9 years     $ 9.80
     11.36 -  12.90                           8        6.0 years      12.28
     12.91 -  14.45                         516       10.1 years      13.76
     14.46 -  16.00                          30        3.3 years      16.00
                                            ---
    $ 9.80 - $16.00                         596        9.8 years     $13.58
                                            ===

    Employee Stock Purchase Program
    -------------------------------
        Effective November 1, 1997, substantially all of the Company's
    full-time employees are eligible to participate in an employee stock
    purchase program sponsored by the Company and Thermo Electron. Prior to
    November 1, 1997, the program was sponsored by Thermedics and Thermo
    Electron. Under this program, the applicable shares of common stock can
    be purchased at the end of a 12-month period at 95% of the fair market
    value at the beginning of the period, and the shares purchased are
    subject to a six-month resale restriction. Prior to November 1, 1995, the
    applicable shares of common stock could be purchased at 85% of the fair
    market value at the beginning of the period, and the shares purchased
    were subject to a one-year resale restriction. Shares are purchased
    through payroll deductions of up to 10% of each participating employee's
    gross wages.

    Pro Forma Stock-based Compensation Expense
        In October 1995, the Financial Accounting Standards Board issued SFAS
    No. 123, "Accounting for Stock-Based Compensation," which sets forth a
    fair-value based method of recognizing stock-based compensation expense.
    As permitted by SFAS No. 123, the Company has elected to continue to
    apply APB No. 25 to account for its stock-based compensation plans. Had
    compensation cost for awards granted in 1997 and 1996 under the Company's
    stock-based compensation plans been determined based on the fair value at


                                        16PAGE
<PAGE>
    Thermo Sentron Inc.                             1997 Financial Statements

                   Notes to Consolidated Financial Statements

    5.  Employee Benefit Plans (continued)

    the grant dates consistent with the method set forth under SFAS No. 123,
    the effect on the Company's net income and earnings per share would have
    been as follows:

    (In thousands except per share amounts)                  1997      1996
    ------------------------------------------------------------------------
    Net income:
      As reported                                          $6,488    $5,152
      Pro forma                                             6,252     4,989

    Basic and diluted earnings per share:
      As reported                                             .66       .56
      Pro forma                                               .63       .54

        Pro forma compensation expense for options granted is reflected over
    the vesting period, therefore future pro forma compensation expense may
    be greater as additional options are granted.
        The weighted average fair value per share of options granted was
    $5.98 and $6.69 in 1997 and 1996, respectively. The fair value of each
    option grant was estimated on the grant date using the Black-Scholes
    option-pricing model with the following weighted-average assumptions:

                                                             1997      1996
    ------------------------------------------------------------------------
    Volatility                                                28%       29%
    Risk-free interest rate                                  6.3%      6.1%
    Expected life of options                            7.8 years   8 years

        The Black-Scholes option-pricing model was developed for use in
    estimating the fair value of traded options which have no vesting
    restrictions and are fully transferable. In addition, option-pricing
    models require the input of highly subjective assumptions including
    expected stock price volatility. Because the Company's employee stock
    options have characteristics significantly different from those of traded
    options, and because changes in the subjective input assumptions can
    materially affect the fair value estimate, in management's opinion, the
    existing models do not necessarily provide a reliable single measure of
    the fair value of its employee stock options.

    401(k) Savings Plan
        Substantially all of the Company's full-time U.S. employees are
    eligible to participate in Thermo Electron's 401(k) savings plan.
    Contributions to the 401(k) savings plan are made by both the employee
    and the Company. Company contributions are based upon the level of
    employee contributions. For these plans, the Company contributed and
    charged to expense $332,000, $316,000, and $321,000 in 1997, 1996, and
    1995, respectively.


                                        17PAGE
<PAGE>
    Thermo Sentron Inc.                             1997 Financial Statements

                   Notes to Consolidated Financial Statements

    6.  Income Taxes

        The components of income before provision for income taxes are as
    follows:

    (In thousands)                                  1997      1996      1995
    ------------------------------------------------------------------------
    Domestic                                     $ 5,969   $ 4,374   $ 3,233
    Foreign                                        4,667     3,936     3,142
                                                 -------   -------   -------
                                                 $10,636   $ 8,310   $ 6,375
                                                 =======   =======   =======

        The components of the provision for income taxes are as follows:
    (In thousands)                                 1997        1996     1995
    ------------------------------------------------------------------------
    Currently payable:
      Federal                                    $1,920      $1,289   $  726
      State                                         380         392      166
      Foreign                                     1,227       1,962    1,217
                                                 ------      ------   ------
                                                  3,527       3,643    2,109
                                                 ------      ------   ------

    Net deferred (prepaid):
      Federal                                        13         (54)     287
      State                                           3         (12)      77
      Foreign                                       605        (419)      72
                                                 ------      ------   ------
                                                    621        (485)     436
                                                 ------      ------   ------
                                                 $4,148      $3,158   $2,545
                                                 ======      ======   ======

        The provision for income taxes that is currently payable does not
    reflect $1,779,000 of tax benefits used to reduce cost in excess of net
    assets of acquired companies in 1996. The provision for income taxes in
    the accompanying statement of income differs from the provision
    calculated by applying the statutory federal income tax rate of 35% to
    income before provision for income taxes due to the following:

    (In thousands)                                 1997        1996    1995
    -----------------------------------------------------------------------
    Provision for income taxes at statutory
      rate                                       $3,723      $2,909  $2,231
    Increases (decreases) resulting from:
      State income taxes, net of federal tax        249         247     158
      Foreign tax rate and tax law differential     205         165     188
      Tax benefit of foreign sales corporation     (137)        (42)    (68)
      Other, net                                    108        (121)     36
                                                 ------      ------  ------
                                                 $4,148      $3,158  $2,545
                                                 ======      ======  ======
                                        18PAGE
<PAGE>
    Thermo Sentron Inc.                             1997 Financial Statements

                   Notes to Consolidated Financial Statements

    6.  Income Taxes (continued)

        Prepaid income taxes and deferred income taxes in the accompanying
    balance sheet consist of the following:

    (In thousands)                                 1997      1996
    --------------------------------------------------------------
    Prepaid income taxes:
      Reserves and accruals                      $  746    $  677
      Accrued compensation                          503       470
      Allowance for doubtful accounts               110       339
      Inventory basis difference                     48        38
                                                 ------    ------
                                                 $1,407    $1,524
                                                 ======    ======

    Deferred (prepaid) income taxes:
      Depreciation                               $   (3)   $   37
      Intangible assets                             645       317
                                                 ------    ------
                                                 $  642    $  354
                                                 ======    ======

        A provision has not been made for U.S. or additional foreign taxes on
    $5,705,000 of undistributed earnings of foreign subsidiaries that could
    be subject to taxation if remitted to the U.S. because the Company
    currently plans to keep these amounts permanently reinvested overseas. 

    7.  Commitments

        The Company leases portions of its office and operating facilities
    under various operating lease arrangements expiring between 1998 and
    2013. The accompanying statement of income includes expenses from
    operating leases of $1,898,000, $1,759,000, and $1,940,000 in 1997, 1996,
    and 1995, respectively. Future minimum payments due under noncancelable
    operating leases at January 3, 1998, were $1,526,000 in 1998, $964,000 in
    1999, $643,000 in 2000, $207,000 in 2001, $74,000 in 2002, and $326,000
    in 2003 and thereafter. Total future minimum lease payments of $3,740,000
    have not been reduced by minimum sublease rentals of $302,000 due through
    1999 under noncancelable operating leases.

    8.  Related-party Transactions

    Corporate Services Agreement
        The Company and Thermo Electron have a corporate services agreement
    under which Thermo Electron's corporate staff provides certain
    administrative services, including certain legal advice and services,
    risk management, certain employee benefit administration, tax advice and
    preparation of tax returns, centralized cash management, and certain


                                        19PAGE
<PAGE>
    Thermo Sentron Inc.                             1997 Financial Statements

                   Notes to Consolidated Financial Statements

    8.  Related-party Transactions (continued)

    financial and other services, for which the Company paid Thermo Electron
    annually an amount equal to 1.0% of the Company's revenues in 1997 and
    1996 and 1.20% of the Company's revenues in 1995. For these services, the
    Company was charged $787,000, $700,000, and $810,000 in 1997, 1996, and
    1995, respectively. Beginning in 1998, the Company will pay an annual fee
    equal to 0.8% of the Company's revenues. The annual fee is reviewed and
    adjusted annually by mutual agreement of the parties. The corporate
    services agreement is renewed annually but can be terminated upon 30
    days' prior notice by the Company or upon the Company's withdrawal from
    the Thermo Electron Corporate Charter (the Thermo Electron Corporate
    Charter defines the relationship among Thermo Electron and its
    majority-owned subsidiaries). Management believes that the service fee
    charged by Thermo Electron is reasonable and that such fees are
    representative of the expenses the Company would have incurred on a
    stand-alone basis. For additional items such as employee benefit plans,
    insurance coverage, and other identifiable costs, Thermo Electron charges
    the Company based upon costs attributable to the Company.

    Other Related-party Transactions
        In connection with the acquisition of the Company by Thermedics, the
    Company ceased to distribute a line of alloy analyzers. In January 1995,
    this distributorship (TN Technologies or TN) was transferred to Thermo
    Instrument Systems Inc., a publicly traded, majority-owned subsidiary of
    Thermo Electron, for book value. 
        The Company acts as a distributor in Europe for process measurement
    instruments manufactured by TN. In 1997, 1996, and 1995, the Company
    purchased such products from TN for $564,000, $563,000, and $988,000,
    respectively.
        In 1997, 1996, and 1995, the Company sold meters to TN pursuant to
    purchase orders resulting in revenues of $6,000, $114,000, and $23,000,
    respectively.

    Repurchase Agreement
        The Company invests excess cash in a repurchase agreement with Thermo
    Electron as discussed in Note 1.

    9.  Short-term Obligations

        Certain of the Company's foreign subsidiaries have lines of credit
    outstanding of $3,200,000 and $3,500,000 as of year-end 1997 and 1996,
    respectively. The weighted average interest rate for these borrowings was
    7.1% and 6.4% as of year-end 1997 and 1996, respectively. Unused lines of
    credit were $9,600,000 as of January 3, 1998. Amounts borrowed under
    these arrangements are included in notes payable in the accompanying
    balance sheet.

                                        20PAGE
<PAGE>
    Thermo Sentron Inc.                             1997 Financial Statements

                   Notes to Consolidated Financial Statements

    10. Geographical Information

        The Company is engaged in one business segment: designing,
    developing, manufacturing, and selling high-speed precision-weighing and
    inspection equipment. The following table shows data for the Company by
    geographical area:
    (In thousands)                           1997         1996          1995
    ------------------------------------------------------------------------
    Revenues:
        United States                    $ 37,595     $ 32,992      $ 36,163
        Italy                               9,363        9,832         8,762
        United Kingdom                      7,723        6,797         2,600
        Other Europe                        9,079        8,875         9,541
        Australia                           8,602        6,874         5,938
        Other                               6,333        4,657         4,470
                                         --------     --------      --------
                                         $ 78,695     $ 70,027      $ 67,474
                                         ========     ========      ========
    Income before provision
      for income taxes:
        United States                    $  4,717     $  3,533      $  4,031
        Italy                               1,354        1,009         1,472
        United Kingdom                        212          662            49
        Other Europe                        1,307        1,410         1,238
        Australia                           1,229          703           720
        Other                                 872          591           466
        Corporate (a)                        (981)        (700)         (810)
                                         --------     --------      --------
        Total operating income              8,710        7,208         7,166
        Interest and other
          income (expense), net             1,926        1,102          (791)
                                         --------     --------      --------
                                         $ 10,636     $  8,310      $  6,375
                                         ========     ========      ========
    Identifiable assets:
        United States                    $ 80,637     $ 77,692      $ 39,889
        Italy                               6,800        7,145         6,956
        United Kingdom                     13,171       10,173         3,474
        Other Europe                        6,025        6,356         6,206
        Australia                           5,530        3,560         3,202
        Other                               2,938        2,260         2,233
                                         --------     --------      --------
                                         $115,101     $107,186      $ 61,960
                                         ========     ========      ========

    Export revenues included in
      United States revenues
      above (b)                          $ 10,719     $  7,598      $  8,820
                                         ========     ========      ========
    ____________
    (a) Primarily general and administrative expenses.
    (b) In general, export sales are denominated in U.S. dollars.

                                        21PAGE
<PAGE>
    Thermo Sentron Inc.                             1997 Financial Statements

                   Notes to Consolidated Financial Statements

    11. Earnings per Share

        Basic and diluted earnings per share were calculated as follows:

    (In thousands except per share amounts)       1997      1996      1995
    ----------------------------------------------------------------------
    Basic
    Net income                                  $6,488    $5,152    $3,830
                                                ------    ------    ------
    Weighted average shares                      9,875     9,156     7,027
                                                ------    ------    ------
    Basic earnings per share                    $  .66    $  .56    $  .55
                                                ======    ======    ======

    Diluted
    Net income                                  $6,488    $5,152    $3,830
                                                ------    ------    ------
    Weighted average shares                      9,875     9,156     7,027
    Effect of stock options                          3         6         -
                                                ------    ------    ------
    Weighted average shares, as adjusted         9,878     9,162     7,027
                                                ------    ------    ------
    Diluted earnings per share                  $  .66    $  .56    $  .55
                                                ======    ======    ======

        The computation of diluted earnings per share excludes the effect of
    assuming the exercise of certain outstanding stock options because the
    effect would be antidilutive. At January 3, 1998, there were 554,000 of
    such options outstanding, with exercise prices ranging from $12.28 to
    $16.00 per share.

    12. Unaudited Quarterly Information

    (In thousands except per share amounts)

    1997                           First     Second       Third      Fourth
    -----------------------------------------------------------------------
    Revenues                     $17,981    $18,486     $19,500     $22,728
    Gross profit                   6,896      7,594       7,823       8,818
    Net income                     1,348      1,642       1,640       1,858
    Basic and diluted earnings
      per share                      .14        .17         .17         .19

    1996                           First     Second       Third      Fourth
    -----------------------------------------------------------------------
    Revenues                     $16,697    $17,331     $17,518     $18,481
    Gross profit                   6,451      7,145       7,019       7,549
    Net income                       742      1,460       1,346       1,604
    Basic and diluted earnings
      per share                      .11        .15         .14         .16



                                        22PAGE
<PAGE>
    Thermo Sentron Inc.                             1997 Financial Statements

                    Report of Independent Public Accountants

    To the Shareholders and Board of Directors of Thermo Sentron Inc.:

        We have audited the accompanying consolidated balance sheet of Thermo
    Sentron Inc. (a Delaware corporation and 71%-owned subsidiary of
    Thermedics Inc.) and its subsidiaries as of January 3, 1998, and December
    28, 1996, and the related consolidated statements of income,
    shareholders' investment, and cash flows for each of the three years in
    the period ended January 3, 1998. These consolidated financial statements
    are the responsibility of the Company's management. Our responsibility is
    to express an opinion on these consolidated financial statements based on
    our audits.
        We conducted our audits in accordance with generally accepted
    auditing standards. Those standards require that we plan and perform the
    audit to obtain reasonable assurance about whether the consolidated
    financial statements are free of material misstatement. An audit includes
    examining, on a test basis, evidence supporting the amounts and
    disclosures in the financial statements. An audit also includes assessing
    the accounting principles used and significant estimates made by
    management, as well as evaluating the overall financial statement
    presentation. We believe that our audits provide a reasonable basis for
    our opinion.
        In our opinion, the consolidated financial statements referred to
    above present fairly, in all material respects, the financial position of
    Thermo Sentron Inc. and its subsidiaries as of January 3, 1998, and
    December 28, 1996, and the results of their operations and their cash
    flows for each of the three years in the period ended January 3, 1998, in
    conformity with generally accepted accounting principles.



                                                Arthur Andersen LLP



    Boston, Massachusetts
    February 12, 1998



                                        23PAGE
<PAGE>
    Thermo Sentron Inc.                             1997 Financial Statements

                     Management's Discussion and Analysis of
                  Financial Condition and Results of Operations

        Forward-looking statements, within the meaning of Section 21E of the
    Securities Exchange Act of 1934, are made throughout this Management's
    Discussion and Analysis of Financial Condition and Results of Operations.
    For this purpose, any statements contained herein that are not statements
    of historical fact may be deemed to be forward-looking statements.
    Without limiting the foregoing, the words "believes," "anticipates,"
    "plans," "expects," "seeks," "estimates," and similar expressions are
    intended to identify forward-looking statements. There are a number of
    important factors that could cause the results of the Company to differ
    materially from those indicated by such forward-looking statements,
    including those detailed immediately after this Management's Discussion
    and Analysis of Financial Condition and Results of Operations under the
    heading "Forward-looking Statements."

    Overview
        The Company designs, develops, manufactures, and sells high-speed
    precision-weighing and inspection equipment for industrial production and
    packaging lines. The Company serves two principal markets: packaged goods
    and bulk materials. The Company's products for the packaged-goods market
    include a broad line of checkweighing equipment and metal detectors that
    can be integrated at various stages in production lines for process
    control and quality assurance. These products are sold to customers in
    the food-processing, pharmaceutical, mail-order, and other diverse
    industries. The Company's bulk-materials product line includes
    conveyor-belt scales, solid level-measurement and conveyor-monitoring
    devices, sampling systems, and small capacity feeders. These products are
    sold primarily to customers in the mining and material-processing
    industries, as well as to electric utilities, chemical, and other
    manufacturing companies.
        A portion of the Company's revenues are generated from large orders
    for the Company's sampling systems. This equipment has a high percentage
    of subcontracted costs, particularly for steel and steel fabrication,
    which results in lower gross profit margins in comparison to the
    Company's other products. The timing of the sales of this equipment can
    lead to variability in the Company's quarterly revenues and income. In
    addition, over 66% of the Company's revenues in 1997 were derived from
    sales of products outside the United States, through export sales and
    sales by the Company's foreign subsidiaries. During 1997, the Company had
    exports from its U.S. and foreign operations to Asia of approximately 9%
    of total revenues. Exports to Asia in 1997 were primarily to China,
    Taiwan, Indonesia, and Japan. Asia is experiencing a severe economic
    crisis, which has been characterized by sharply reduced economic activity
    and liquidity, highly volatile foreign-currency- exchange and interest
    rates, and unstable stock markets. The Company's export sales could be
    adversely affected by the unstable economic conditions in Asia. Although
    the Company seeks to charge its customers in the same currency as its
    operating costs, the Company's financial performance and competitive
    position can be affected by currency exchange rate fluctuations affecting
    the relationship between the U.S. dollar and foreign currencies.

                                        24PAGE
<PAGE>
    Thermo Sentron Inc.                             1997 Financial Statements

                     Management's Discussion and Analysis of
                  Financial Condition and Results of Operations


    Results of Operations

    1997 Compared With 1996
        Revenues increased 12% to $78.7 million in 1997 from $70.0 million in
    1996. Revenues increased $4.2 million due to the acquisitions of the
    business of RCC Industrial Electronics Pty. Limited (RCCI) in February
    1997 and Westerland Engineering Ltd. in July 1997, as well as the
    inclusion of revenues for the full year from the solids flow-measurement
    product line of Endress + Hauser, Inc., purchased in April 1996. Revenues
    decreased $2.7 million due to a stronger U.S. dollar relative to
    currencies in foreign countries in which the Company operates. Excluding
    the impact of acquisitions and foreign exchange, revenues increased $7.2
    million. Sales of products in the bulk-materials product line increased
    approximately $4.6 million, primarily due to increased export sales from
    the North American operations, resulting from increased demand in
    Southeast Asia and Latin America. Sales of products in the packaged-goods
    product line increased approximately $2.6 million, primarily due to
    increased demand in the U.S.
        The gross margin was unchanged at 40% in 1997 and 1996.
        Selling, general, and administrative expenses as a percentage of
    revenues decreased to 26% in 1997 from 27% in 1996, primarily due to
    increased revenues and, to a lesser extent, increased efforts to control
    costs. Research and development expenses were unchanged at $1.9 million
    in 1997 and 1996.
        Interest income increased to $2.1 million in 1997 from $1.5 million
    in 1996, primarily due to increased cash balances for the full year in
    1997 as a result of proceeds received from the Company's April 1996
    initial public offering of common stock (Note 4). Interest expense
    decreased to $0.3 million in 1997 from $0.6 million in 1996, primarily
    due to the 1996 repayment of a note payable. Interest expense includes
    interest on borrowings at the Company's foreign subsidiaries and on a
    credit facility denominated in British pounds sterling (Note 9).
        The effective tax rate was 39% in 1997, compared with 38% in 1996.
    The effective tax rates exceeded the statutory federal income tax rate
    primarily due to the impact of state income taxes and foreign tax rate
    differences.
        The Company is currently assessing the potential impact of the year
    2000 on the processing of date-sensitive information by the Company's
    computerized information systems and on products sold as well as products
    purchased by the Company. The Company believes that its internal
    information systems and current products are either year 2000 compliant
    or will be so prior to the year 2000 without incurring material costs.
    There can be no assurance, however, that the Company will not experience
    unexpected costs and delays in achieving year 2000 compliance for its
    internal information systems and current products, which could result in
    a material adverse effect on the Company's future results of operations.
        The Company is presently assessing the effect that the year 2000
    problem may have on its previously sold products. The Company is also
    assessing whether its key suppliers are adequately addressing this issue
    and the effect this might have on the Company. The Company has not
    completed its analysis and is unable to conclude at this time that the 
                                        25PAGE
<PAGE>
    Thermo Sentron Inc.                             1997 Financial Statements

                     Management's Discussion and Analysis of
                  Financial Condition and Results of Operations


    1997 Compared With 1996 (continued)
    year 2000 problem as it relates to its previously sold products and
    products purchased from key suppliers is not reasonably likely to have a
    material adverse effect on the Company's future results of operations.

    1996 Compared With 1995
        Revenues were $70.0 million in 1996, compared with $67.5 million in
    1995, an increase of 4%. The increase in revenues primarily reflects the
    inclusion of $6.7 million in revenues from Hitech Electrocontrols Limited
    (Hitech), acquired in January 1996, and the solids flow-measurement
    product line of Endress + Hauser, purchased in April 1996. This increase
    was offset in part by a $3.2 million decrease in U.S. revenues from
    existing product lines. U.S. revenues decreased due to lower demand
    resulting from a reduction in capital spending by major food suppliers,
    caused by higher grain prices and breakfast cereal price wars, and the
    inclusion of $1.8 million in revenues in 1995 from the sale of a large
    sampling system to a customer in Taiwan.
        The gross profit margin increased to 40% in 1996 from 39% in 1995,
    primarily due to sales from the higher-margin Endress + Hauser product
    line.
        Selling, general, and administrative expenses as a percentage of
    revenues increased to 27% in 1996 from 26% in 1995, primarily due to
    increased selling and marketing expenses for newly introduced products
    and the Endress + Hauser products. Research and development expenses were
    relatively unchanged at $1.9 million in 1996 and 1995.
        Interest income increased to $1.5 million in 1996 from $0.2 million
    in 1995, primarily due to interest earned on the invested proceeds from
    the Company's April 1996 initial public offering of common stock.
    Interest expense decreased to $0.6 million in 1996 from $0.9 million in
    1995 due to the repayment of a note payable and a reduction in short-term
    borrowings. 
        The effective tax rate was 38% in 1996, compared with 40% in 1995.
    The effective tax rates exceeded the statutory federal income tax rate
    due primarily to the impact of state income taxes and foreign tax rate
    and tax law differences.

    Liquidity and Capital Resources

        Consolidated working capital was $45.0 million at January 3, 1998,
    compared with $41.4 million at December 28, 1996. Included in working
    capital are cash, cash equivalents, and available-for-sale investments of
    $40.0 million at January 3, 1998, compared with $34.8 million at December
    28, 1996. During 1997, operating activities provided cash of $7.9
    million.
        During 1997, the Company's primary investing activities, excluding
    available-for-sale investment activity, included acquisitions and capital
    expenditures. The Company expended $2.9 million, net of cash acquired,
    for acquisitions (Note 3). To finance one acquisition, the Company
    borrowed $2.0 million, denominated in British pounds sterling, from a
    bank, pursuant to a promissory note repaid in January 1998 and bearing
    interest at 7.94%. The Company expended $0.7 million for purchases of 
                                        26PAGE
<PAGE>
    Thermo Sentron Inc.                             1997 Financial Statements

                     Management's Discussion and Analysis of
                  Financial Condition and Results of Operations


    Liquidity and Capital Resources (continued)

    property, plant, and equipment in 1997, and plans to make capital
    expenditures of approximately $1.2 million in 1998.
        The Company's financing activities provided $1.6 million of cash in
    1997. In December 1997, the Company's Board of Directors authorized the
    repurchase, through December 8, 1998, of up to $5.0 million of Company
    common stock in the open market, or in negotiated transactions. Through
    January 3, 1998, the Company has expended $0.1 million under this
    authorization. Any repurchases are funded from working capital. Certain
    of the Company's foreign subsidiaries have foreign-currency-denominated
    line-of-credit arrangements with banks. Notes payable in the accompanying
    1997 balance sheet includes $3.2 million of short-term borrowings under
    these arrangements. Unused lines of credit were $9.6 million as of
    January 3, 1998.
        Although the Company expects to have positive cash flow from its
    existing operations, the Company may require significant amounts of cash
    for the acquisition of complementary businesses. While the Company
    currently has no agreements to acquire other businesses, the Company
    expects that it would finance any such acquisition through a combination
    of internal funds, additional debt or equity financing from the capital
    markets, or short-term borrowings from Thermedics or Thermo Electron,
    although it has no agreement with these companies to ensure that funds
    will be available on acceptable terms or at all. The Company believes
    that its existing resources are sufficient to meet the capital
    requirements of its existing businesses for the foreseeable future.





                                        27PAGE
<PAGE>
    Thermo Sentron Inc.                             1997 Financial Statements

                           Forward-looking Statements

        In connection with the "safe harbor" provisions of the Private
    Securities Litigation Reform Act of 1995, the Company wishes to caution
    readers that the following important factors, among others, in some cases
    have affected, and in the future could affect, the Company's actual
    results and could cause its actual results in 1998 and beyond to differ
    materially from those expressed in any forward-looking statements made
    by, or on behalf of, the Company.

        Risks Associated With Acquisition Strategy. The Company's strategy
    includes the acquisition of businesses and technologies that complement
    or augment the Company's existing product lines. Promising acquisitions
    are difficult to identify and complete for a number of reasons, including
    competition among prospective buyers and the need for regulatory
    approval, including antitrust approvals. There can be no assurance that
    the Company will be able to complete future acquisitions or that the
    Company will be able to successfully integrate any acquired business. In
    order to finance such acquisitions, it may be necessary for the Company
    to raise additional funds through public or private financings. Any
    equity or debt financing, if available at all, may be on terms that are
    not favorable to the Company.

        International Operations. Sales outside the United States accounted
    for 66% of the Company's total revenues in 1997. The Company intends to
    continue to expand its presence in international markets. International
    revenues are subject to a number of risks, including the following:
    agreements may be difficult to enforce and receivables difficult to
    collect through a foreign country's legal system; foreign customers may
    have longer payment cycles; foreign countries may impose additional
    withholding taxes or otherwise tax the Company's foreign income, impose
    tariffs, or adopt other restrictions on foreign trade; fluctuations in
    exchange rates may affect product demand and adversely affect the
    profitability in U.S. dollars of products and services provided by the
    Company in foreign markets where payment for the Company's products and
    services is made in the local currency; U.S. export licenses may be
    difficult to obtain; and the protection of intellectual property in
    foreign countries may be more difficult to enforce. There can be no
    assurance that any of these factors will not have a material adverse
    effect on the Company's business and results of operations.

        Government Regulations and Approvals. The market for certain of the
    Company's products, both in the United States and abroad, is subject to
    or influenced by various domestic and foreign clean air and consumer
    protection laws. The Company designs, develops, and markets its products
    to meet customer needs created by existing and anticipated regulations,
    and any changes in these regulations may adversely affect consumer demand
    for the Company's products. In addition, the marketing of certain of the
    Company's products is dependent upon the receipt of regulatory and other
    approvals, including industry association approvals of the design,
    construction, and accuracy of the Company's products. Delays in
    obtaining, or the failure to obtain, any such approvals could have a
    material adverse effect on the Company's business and results of
    operations.

                                        28PAGE
<PAGE>
    Thermo Sentron Inc.                             1997 Financial Statements

                           Forward-looking Statements

        Competition. The Company encounters and expects to continue to
    encounter intense competition in the sale of its products. The Company
    believes that the principal competitive factors affecting the market for
    precision-weighing and inspection equipment include customer service and
    support, quality and reliability, price, accuracy, ease of use,
    distribution channels, technical features, compatibility with customers'
    manufacturing processes, and regulatory approvals. Certain of the
    Company's competitors have greater resources, manufacturing and marketing
    capabilities, technical staff, and production facilities than those of
    the Company. As a result, they may be able to adapt more quickly to new
    or emerging technologies and changes in customer requirements, or to
    devote greater resources to the promotion and sale of their products than
    can the Company. Competition could increase if new companies enter the
    market or if existing competitors expand their product lines.

        Technological Change and New Products. The market for precision-
    weighing and inspection equipment is characterized by changing
    technology, evolving industry standards, and new product introductions.
    The Company's future success will depend in part upon its ability to
    enhance its existing products and to develop and introduce new products
    and technologies to meet changing customer requirements. The Company is
    currently devoting significant resources to enhancing its existing
    products and developing new products and technologies. There can be no
    assurance that the Company will successfully complete the enhancement and
    development of these products in a timely fashion or that the Company's
    current or future products will satisfy the needs of the
    precision-weighing and inspection equipment market.

        Potential Fluctuations in Quarterly Performance. The Company's
    quarterly operating results may vary significantly depending on a number
    of factors, including the size, timing, and shipment of individual
    orders, seasonality of revenue, foreign currency exchange rates, the mix
    of products sold, and general economic conditions. Because the Company's
    operating expenses are based on anticipated revenue levels and a high
    percentage of the Company's expenses are fixed for the short term, a
    small variation in the timing of recognition of revenue can cause
    significant variations in operating results from quarter to quarter.

        Potential Impact of Year 2000 on Processing of Date-Sensitive
    Information. The Company is currently assessing the potential impact of
    the year 2000 on the processing of date-sensitive information by the
    Company's computerized information systems and on products sold as well
    as products purchased by the Company. The Company believes that its
    internal information systems and current products are either year 2000
    compliant or will be so prior to the year 2000 without incurring material
    costs. There can be no assurance, however, that the Company will not
    experience unexpected costs and delays in achieving year 2000 compliance
    for its internal information systems and current products, which could
    result in a material adverse effect on the Company's future results of
    operations.

                                        29PAGE
<PAGE>
    Thermo Sentron Inc.                             1997 Financial Statements

                           Forward-looking Statements

        The Company is presently assessing the effect that the year 2000
    problem may have on its previously sold products. The Company is also
    assessing whether its key suppliers are adequately addressing this issue
    and the effect this might have on the Company. The Company has not
    completed its analysis and is unable to conclude at this time that the
    year 2000 problem as it relates to its previously sold products and
    products purchased from key suppliers is not reasonably likely to have a
    material adverse effect on the Company's future results of operations.






















                                        30PAGE
<PAGE>
   Thermo Sentron Inc.                               1997 Financial Statements

                         Selected Financial Information

                               The Company (a)              Predecessor (a)
                     ------------------------------------  ------------------
                                                March 16,   Oct. 1,    Fiscal
                                                    1994,     1993,      Year
   (In thousands                                  through   through     Ended
   except per                                    Dec. 31,  Mar. 15, Sept. 30,
   share amounts)      1997(b)   1996(c)   1995      1994      1994      1993
   --------------------------------------------------------------------------
   Statement of
    Operations Data:
   Revenues        $ 78,695  $ 70,027  $ 67,474  $ 50,116  $ 24,300  $ 58,641
   Net income
     (loss)           6,488     5,152     3,830     1,260    (1,269)      991
   Basic and
     diluted
     earnings
     (loss) per
     share (d)          .66       .56       .55       .18      (.18)      .14

   Balance Sheet
     Data:
   Working
     capital       $ 45,005  $ 41,394  $   (853) $   (250) $ 13,409  $ 12,460
   Total assets     115,101   107,186    61,960    62,527    28,494    29,191
   Long-term
     obligation           -         -         -     1,849         -         -
   Shareholders'
     investment      87,931    82,365    34,687    34,600    15,781    15,660
   ____________
   (a) On March 16, 1994, Thermedics acquired the Predecessor from Baker
       Hughes. Periods prior to March 16, 1994, represent the results of
       Ramsey as included in Baker Hughes' financial statements. Periods
       subsequent to March 15, 1994, represent the results of Ramsey as
       included in Thermedics' consolidated financial statements. The
       principal difference in the basis of accounting between the Predecessor
       and the Company relates to the cost in excess of net assets of acquired
       companies, the amortization of which approximates $860,000 per year.
   (b) Reflects the February 1997 acquisition of the business of RCC
       Industrial Electronics Pty. Limited and the July 1997 acquisition of
       Westerland Engineering Ltd.
   (c) Includes the net proceeds of the Company's initial public offering in
       April 1996, and reflects the January 1996 acquisition of Hitech
       Electrocontrols Limited and the April 1996 acquisition of the solids
       flow-measurement product line of Endress & Hauser.
   (d) For periods prior to the Company's January 1996 capitalization, shares
       issued in connection with such capitalization have been assumed
       outstanding for purposes of computing earnings (loss) per share.


                                       31PAGE
<PAGE>
    Thermo Sentron Inc.                             1997 Financial Statements


    Common Stock Market Information
        The Company's common stock is traded on the American Stock Exchange
    under the symbol TSR. The following table sets forth the high and low
    sale prices of the Company's common stock since March 27, 1996, the date
    the Company's common stock began trading on that exchange, as reported in
    the consolidated transaction reporting system.

                               1997                             1996
                       -------------------              --------------------
    Quarter               High         Low                 High          Low
    ------------------------------------------------------------------------
    First              $13 3/4   $ 9                    $17          $16
    Second              11 5/8     8  9/16               16 3/4       15
    Third               14 1/8    10 15/16               16 1/8       11 5/8
    Fourth              14         9   1/4               13 1/2       10 1/2

        As of January 30, 1998, the Company had 67 holders of record of its
    common stock. This does not include holdings in street or nominee names.
    The closing market price on the American Stock Exchange for the Company's
    common stock on January 30, 1998, was $9 13/16 per share.

    Shareholder Services
        Shareholders of Thermo Sentron Inc. who desire information about the
    Company are invited to contact John N. Hatsopoulos, Chief Financial
    Officer, Thermo Sentron Inc., 81 Wyman Street, P.O. Box 9046, Waltham,
    Massachusetts 02254-9046, (781) 622-1111. A mailing list is maintained to
    enable shareholders whose stock is held in street name, and other
    interested individuals, to receive quarterly reports, annual reports, and
    press releases as quickly as possible. Distribution of printed quarterly
    reports is limited to the second quarter only. All material will be
    available from Thermo Electron's Internet site (http://www.thermo.com/
    subsid/tsr1.html).

    Stock Transfer Agent
        American Stock Transfer & Trust Company is the stock transfer agent
    and maintains shareholder activity records. The agent will respond to
    questions on issuance of stock certificates, change of ownership, lost
    stock certificates, and change of address. For these and similar matters,
    please direct inquiries to:

        American Stock Transfer & Trust Company
        Shareholder Services Department
        40 Wall Street, 46th Floor
        New York, New York 10005
        (718) 921-8200

    Dividend Policy
        The Company has never paid cash dividends and does not expect to pay
    cash dividends in the foreseeable future because its policy has been to
    use earnings to finance expansion and growth. Payment of dividends will
    rest within the discretion of the Board of Directors and will depend
    upon, among other factors, the Company's earnings, capital requirements,
    and financial condition.
                                        32PAGE
<PAGE>
    Thermo Sentron Inc.                             1997 Financial Statements


    Form 10-K Report
        A copy of the Annual Report on Form 10-K for the fiscal year ended
    January 3, 1998, as filed with the Securities and Exchange Commission,
    may be obtained at no charge by writing to John N. Hatsopoulos, Chief
    Financial Officer, Thermo Sentron Inc., 81 Wyman Street, P.O. Box 9046,
    Waltham, Massachusetts 02254-9046.

    Annual Meeting
        The annual meeting of shareholders will be held on Monday, June 1,
    1998, at 1:30 p.m., at the Hyatt Regency Hotel, Scottsdale, Arizona.



                                        33PAGE
<PAGE>








                                                                   Exhibit 21


                               THERMO SENTRON INC.
                         Subsidiaries of the Registrant


        At February 20, 1998, the Registrant owned the following companies:

                                                                 Registrant's
                                         State or Jurisdiction       % of
    Name                                    of Incorporation      Ownership
    ------------------------------------------------------------------------

    Ramsey Technology Inc.                   Massachusetts           100
      Xuzhou Ramsey Technology Co., Ltd.         China                50
    Ramsey France S.A.R.L.                       France              100
    Ramsey Ingenieros S.A.                       Spain               100
    Ramsey Italia S.R.L.                         Italy               100
      Tecno Europa Elettromeccanica S.R.L.       Italy               100
    Thermo Sentron Australia Pty. Ltd.         Australia             100
    Thermo Sentron B.V.                     The Netherlands          100
    Thermo Sentron Canada Inc.                   Canada              100
    Thermo Sentron GmbH                         Germany              100
    Thermo Sentron Limited                         UK                100
      Hitech Electrocontrols Limited               UK                100
        Hitech Licenses Ltd.                       UK                100
        Hitech Metal Detectors Ltd.                UK                100
      Westerland Engineering Ltd.                  UK                100
    Thermo Sentron (South Africa) Pty. Ltd.   South Africa           100





                                                                   Exhibit 23
                               Thermo Sentron Inc.



                    Consent of Independent Public Accountants
                    -----------------------------------------


         As independent public accountants, we hereby consent to the
    incorporation by reference in this Form 10-K of our report dated 
    February 12, 1998.




                                                     Arthur Andersen LLP




    Boston, Massachusetts
    March 11, 1998



<TABLE> <S> <C>

<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THERMO
SENTRON INC.'S ANNUAL REPORT ON FORM 10-K FOR THE YEAR ENDED JANUARY 3, 1998 AND
IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH FINANCIAL STATEMENTS.
</LEGEND>
<MULTIPLIER> 1,000
       
<S>                             <C>
<PERIOD-TYPE>                   YEAR
<FISCAL-YEAR-END>                          JAN-03-1998
<PERIOD-END>                               JAN-03-1998
<CASH>                                          30,283
<SECURITIES>                                     9,686
<RECEIVABLES>                                   19,428
<ALLOWANCES>                                     1,083
<INVENTORY>                                     11,353
<CURRENT-ASSETS>                                71,533
<PP&E>                                           4,455
<DEPRECIATION>                                   2,009
<TOTAL-ASSETS>                                 115,101
<CURRENT-LIABILITIES>                           26,528
<BONDS>                                              0
                                0
                                          0
<COMMON>                                            99
<OTHER-SE>                                      87,832
<TOTAL-LIABILITY-AND-EQUITY>                   115,101
<SALES>                                         78,695
<TOTAL-REVENUES>                                78,695
<CGS>                                           47,564
<TOTAL-COSTS>                                   47,564
<OTHER-EXPENSES>                                 1,888
<LOSS-PROVISION>                                    88
<INTEREST-EXPENSE>                                 338
<INCOME-PRETAX>                                 10,636
<INCOME-TAX>                                     4,148
<INCOME-CONTINUING>                              6,488
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                     6,488
<EPS-PRIMARY>                                      .66
<EPS-DILUTED>                                      .66
        

</TABLE>


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