THERMOSPECTRA CORP
10-K, 1997-03-17
INSTRUMENTS FOR MEAS & TESTING OF ELECTRICITY & ELEC SIGNALS
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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 December 28, 1996

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

                         Commission file number 1-13876

                            THERMOSPECTRA CORPORATION
             (Exact name of Registrant as specified in its charter)

    Delaware                                                       04-3242970
    (State or other jurisdiction of                          (I.R.S. Employer
    incorporation or organization)                        Identification No.)

    81 Wyman Street, P.O. Box 9046
    Waltham, Massachusetts                                         02254-9046
    (Address of principal executive offices)                       (Zip Code)
       Registrant's telephone number, including area code: (617) 622-1000

           Securities registered pursuant to Section 12(b) of the Act:
                                                  Name of each exchange
             Title of each class                   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 24, 1997, was approximately $46,430,000.

    As of January 24, 1997, the Registrant had 12,448,000 shares of Common
    Stock outstanding.

                       DOCUMENTS INCORPORATED BY REFERENCE

    Portions of the Registrant's Annual Report to Shareholders for the year
    ended December 28, 1996, 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 2, 1997, are incorporated by
    reference into Part III.
PAGE
<PAGE>
                                     PART I

    Item 1. Business

    (a) General Development of Business

        ThermoSpectra Corporation (the Company or the Registrant) develops,
    manufactures, and markets precision imaging, inspection, and measurement
    instrumentation that uses high-speed data acquisition and digital
    processing technologies. These instruments are generally combined with
    proprietary operations and analysis software to provide industrial and
    research customers with integrated systems that address their specific
    needs. The Company was incorporated in Delaware in August 1994 as an
    indirect, wholly owned subsidiary of Thermo Instrument Systems Inc.
    (Thermo Instrument), a publicly traded subsidiary of Thermo Electron
    Corporation (Thermo Electron).

        The Company has achieved and maintains its competitive position
    primarily by addressing specific customer needs through the application
    of advanced technologies in instrument design. The Company has identified
    a number of strategies to grow its business, including developing new
    applications for its technology to address related market segments,
    identifying and acquiring complementary businesses, and strengthening its
    presence in selected geographic markets.

        On March 12, 1997, the Company acquired Park Scientific Instruments
    Corporation (PSI), for $16.9 million in cash, including the repayment of
    $1.3 million in debt, subject to a post-closing adjustment. In addition,
    the Company assumed outstanding PSI stock options that are exercisable
    into 183,940 shares of Company common stock at a weighted average
    exercise price of $3.44 per share, with an aggregate value of
    approximately $2.1 million as of the date of the merger agreement. PSI is
    a manufacturer of scanning probe microscopes used in industry and
    academia to test and measure the topography and other surface properties
    of materials.

        On March 29, 1996, Thermo Instrument acquired a substantial portion
    of the businesses comprising the Scientific Instruments Division of
    Fisons plc (Fisons), a wholly owned subsidiary of Rhone-Poulenc Rorer,
    Inc. Pursuant to an agreement executed on August 5, 1996, the Company
    acquired Kevex Instruments and Kevex X-Ray (the Kevex businesses), which
    were formerly part of Fisons, from Thermo Instrument for $21.5 million in
    cash. The purchase price is subject to a post-closing adjustment based on
    a post-closing adjustment to be negotiated with Fisons by Thermo
    Instrument in connection with the negotiations for the settlement of the
    final purchase price for all of the businesses of Fisons acquired by
    Thermo Instrument in March 1996. Kevex Instruments is a manufacturer of
    X-ray microanalyzers and X-ray fluorescence instruments and Kevex X-Ray
    is a manufacturer of specialty X-ray sources.

        As of December 28, 1996, Thermo Instrument owned 8,998,936 shares of
    the common stock of the Company, representing 72% of such stock
    outstanding. Thermo Instrument develops, manufactures, and markets
    instruments used to detect and measure air pollution, radioactivity,
    complex chemical compounds, toxic metals, and other elements in a broad
    range of liquids and solids, as well as to control and monitor various
    industrial processes. As of December 28, 1996, Thermo Electron owned

                                        2PAGE
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    109,153 shares of the common stock of the Company, representing 0.9% of
    such stock outstanding. During 1996*, Thermo Electron purchased 108,000
    shares in the open market for a total purchase price of $1,591,000.
    Thermo Electron is a world leader in environmental monitoring and
    analysis instruments, biomedical products such as heart-assist devices
    and mammography systems, paper-recycling and papermaking equipment,
    biomass electric power generation, and other specialized products and
    technologies. Thermo Electron also provides a range of services related
    to environmental quality.

    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 caption "Forward-looking
    Statements" in the Registrant's 1996 Annual Report to Shareholders
    incorporated herein by reference.

    (b) Financial Information About Industry Segments

        The Company is engaged in one business segment: developing,
    manufacturing, and marketing precision imaging, inspection, and
    measurement instrumentation.

    (c) Description of Business

        (i) Principal Products and Services

    Digital Signal Measurement Instruments

        Digital Storage Oscilloscopes. The Company develops, manufactures,
    and markets digital storage oscilloscopes (DSOs), which measure both
    transient and repetitive, time-varying electrical, mechanical, or
    physical phenomena. Key technologies in a DSO include the ability to
    collect and convert large amounts of data quickly into a usable format
    for analysis, display, and storage. These functions are accomplished
    using state-of-the-art, application-specific integrated circuits designed
    and developed in-house. Examples of applications for high-accuracy DSOs
    include the recording and analysis of automotive crash-test data to
    determine the level of safety provided by the material surrounding
    passengers; the testing of airbags and anti-lock braking systems by
    automotive design engineers; and the measurement of electrical and
    electronic parameters in control circuits, telecommunications, radar, and
    automotive electronics.


    * References to 1996, 1995, and 1994 herein are for the fiscal years
      ended December 28, 1996, December 30, 1995, and December 31, 1994,
      respectively.
                                        3PAGE
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        The Company manufactures and sells a broad line of high-accuracy and
    general-purpose DSOs for worldwide distribution. The Company's
    entry-level product is a two-channel, portable DSO. The mid-level product
    line is available in numerous configurations of speed, memory, and
    analysis capability to suit a broad range of applications. In the
    high-end, high-accuracy segment, the Company offers a variety of
    configurations of its Pro Series models.

        Digital Oscillographic Recorders. The Company markets a family of
    portable and benchtop oscillographic recording instruments addressing
    everything from field service applications to laboratory research and
    development. These products are primarily used to measure physical
    parameters such as stress, pressure, displacement, acceleration, voltage,
    and current. They provide real-time, continuous monitoring for periods
    ranging from seconds to hours. Oscillographic recorders receive signals
    from sensors attached directly to the device under test. These physical
    signals are converted to electrical signals by signal conditioning
    modules, and are displayed and recorded as continuously varying
    waveforms. They typically utilize recording paper for both acquisition
    and analysis of data.

        In the past, oscillographic recorders were entirely analog with the
    signal from the sensor causing a pen to move back and forth on a moving
    strip of paper. Analysis was performed by observation and manual
    measurement of the waveform. New products use digital technology to
    display, record, and store data. All of the Company's new instruments
    offer these capabilities along with the ability to transfer this acquired
    data to a personal computer for analysis using proprietary software
    optimized for handling large data files. These products are used in a
    wide variety of applications including medical and pharmaceutical
    research, automotive engine performance testing, electric power condition
    monitoring, and machinery testing. Recording systems are often configured
    for specific applications such as flight telemetry recording and
    automotive emission testing.

        The market for traditional paper oscillographic recorders has
    declined during recent years, however, the requirement for instruments
    capable of recording data digitally, along with the associated benefits
    of this technology, has steadily increased. This is particularly true for
    software-based instruments that allow users to customize the data
    acquisition and analysis to their specific application needs.

        Data Acquisition Systems. The Company has recently developed systems
    to address the broad-based data acquisition marketplace. Data acquisition
    systems are increasing in popularity as replacement instruments for
    traditional measurement solutions such as digital recorders and
    instrument tape recorders, and are often used in the research,
    development, and verification of new products.

        The Company sells a line of data hardware and software products. The
    entry-level product offering is a line of PC acquisition cards. Mid-level
    products offer features such as continuous recording to disk and signal
    conditioning for process and medical applications. High-end systems
    include an instrument designed for continuous recording of physical data,
    a multichannel transient recorder product to complement the Company's

                                        4PAGE
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    high-accuracy DSO line, and an ultraportable, hardened data acquisition
    system for monitoring data in remote or harsh environments, such as
    in-vehicle applications. Software offered by the Company ranges from
    simple control and display programs to more extensive analysis and custom
    report generation packages.

        The Company markets its digital signal measurement instruments in the
    United States and Europe through a combination of direct salespeople,
    distributors, and sales representatives, and in the rest of the world
    through over 90 distributors and sales representatives. Revenues from
    digital signal measurement instruments represented 45%, 51%, and 30% of
    the Company's total revenues in 1996, 1995, and 1994, respectively.

    Imaging and Inspection Systems

        X-ray Microanalyzers. The Company develops, manufactures, and markets
    X-ray microanalysis instruments that analyze the elemental composition of
    microscopic samples by detecting, collecting, sorting, and measuring
    X-rays emitted by a sample excited by an energy source. The technology is
    based on the principle that the pattern of X-rays emitted by each
    element, when stimulated to do so, is unique and characteristic of that
    element; thus, the X-ray microanalyzer can construct a spectral image and
    elemental concentration map of a precise area (i.e., one micron) on a
    sample surface. 

        X-ray microanalysis is used in materials science and industrial
    laboratories for failure analysis, advanced materials characterization,
    and purity control analysis. For example, integrated circuit
    manufacturers utilize X-ray microanalysis to identify and analyze
    imperfections and contaminants in semiconductor devices, and aerospace
    companies use it to examine composite materials to determine strength and
    stress resistance.

        The Company manufactures X-ray microanalyzers, including energy-
    dispersive spectrometers (EDS) and wavelength-dispersive spectrometers
    (WDS), that primarily operate as accessories to electron microscopes,
    providing elemental materials analysis as a supplement to the
    microscopes' imaging capabilities. The Company's EDS systems collect
    emitted X-rays of all wavelengths and sort them electronically. The
    instruments are considered easier to use than WDS and have the advantage
    of being able to analyze all elements simultaneously. The Company's WDS
    separate the X-rays emitted by the sample into their component
    wavelengths by a diffraction crystal, and then detect and measure them
    quantitatively, usually one element at a time. WDS offers higher
    resolution than EDS and better detection of light elements, an important
    advantage for samples with very low concentrations of certain elements.

        The key technology in an X-ray microanalyzer is an X-ray detector
    that converts the energy of an X-ray into an electrical signal to be
    processed and quantified by an analyzer. The X-ray detector is comprised
    of silicon or germanium crystals enclosed behind a protective window. The
    Company manufactures its own crystals to ensure product quality. In
    addition, the Company's detectors have a high-quality protective window
    that provides superior light element sensitivity.

                                        5PAGE
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        Industrial customers, universities, and government laboratories
    represent the majority of the end users of X-ray microanalysis systems.
    The Company estimates that the U.S., Europe, and Japan represent most of
    the worldwide market. Historically, the Company has had a strong
    competitive position in the U.S. and Europe, and has recently
    strengthened its presence in the Pacific Rim. Over 50% of the Company's
    sales of X-ray microanalyzers are to electron microscope manufacturers,
    including Japan Electro Optical Laboratories, Hitachi, Ltd., and Amray,
    for resale to end users. The Company sells its X-ray microanalyzers in
    the U.S. through a direct sales force; through a combination of direct
    salespeople, distributors, and sales representatives in Europe, Japan,
    and the rest of the Pacific Rim; and through original equipment
    manufacturer (OEM) relationships with electron microscope manufacturers.

        X-ray Fluorescence Instruments. The Company also manufactures a range
    of X-ray fluorescence instruments that incorporate an X-ray source into
    the instrument to excite the sample. Some applications involve bulk
    sample analysis but the instruments are primarily used for microanalysis
    in the semiconductor and electronics industries. Applications include the
    nondestructive measurement of film thickness and composition for the
    control of manufacturing processes, particularly semiconductor silicon
    wafer manufacturing.

        The Company's X-ray fluorescence instruments utilize energy
    dispersive X-ray technology to allow the rapid analysis and
    identification of materials on a micro scale and on a nondestructive
    basis. The combination of X-ray source and detector technology allows the
    Company to offer products with unique capabilities for industrial process
    analysis. In the area of semiconductor thin film metrology, the Company's
    X-ray fluorescence instruments are used for the nondestructive analysis
    of the thickness and composition of metallic films and coatings in
    semiconductor wafers and devices. This analysis allows the manufacturer
    greater control of the manufacturing process, which ultimately will
    improve yields.

        The Company markets its X-ray fluorescence instruments through a
    combination of direct sales people, distributors, and representatives.

        Specialty X-ray Sources. The Company designs, manufactures, and sells
    a range of microfocus X-ray tubes, power supplies, and integrated units
    that include a high voltage power supply, control electronics, and an
    X-ray tube. The Company's X-ray tubes offer high stability and small
    focal spots, making them ideal for industrial and medical applications,
    including quality control and inspection, thickness gauging, chemical
    analysis, clinical fluoroscopy, and bone densitometry.

        The Company sells its X-ray sources primarily to OEMs through a
    direct sales force in the United States, a distributor in Japan, and
    through both direct sales and distributors in the remainder of the world.

        X-ray Inspection Systems. The Company designs, manufactures, and
    sells real-time, nondestructive, high-resolution X-ray imaging systems
    for process monitoring and quality control applications within the
    electronic assembly and light industrial markets.

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        Such X-ray systems are used in applications where it is necessary to
    see through an object and view the internal structure. For example, in
    the surface mount assembly of printed circuit boards, the solder joints
    are hidden underneath the components attached to the board and can only
    be inspected with the use of X-ray. Within the semiconductor market,
    X-ray systems are used to detect assembly problems associated with the
    attachment of the silicon die to the package substrate, electrical wire
    replacements, and identification of porosity in the plastic cover, all of
    which could lead to failure of the device. Manufacturers are increasingly
    using X-ray systems where component failure would result in safety or
    liability issues. Many automotive electronics and airbag components are
    100% inspected with X-rays for this reason. The performance benefit of
    real-time X-ray imaging lies in its ability to produce clear images of
    the internal structure of hidden or encapsulated objects.

        The Company focuses on the following four segments of the market for
    nonmedical X-ray systems used in nondestructive testing applications:
    assembled printed circuit boards; semiconductor fabrication and
    packaging; multilayer bare board production; and targeted light
    industrial applications, such as automotive airbag component inspection.
    The customers for the Company's products are mainly automotive electronic
    manufacturers, telecommunication companies, contract printed circuit
    board assemblers, computer manufacturers, and media and data storage
    companies.

        The Company's product line offers a full range of models covering
    applications from entry-level, manually-operated systems to full in-line
    automation. The Company currently offers four manual systems targeted at
    electronics and light industrial applications. The manual products are
    qualitative tools that offer high-resolution imaging, which enables an
    operator to take measurements and manually interpret the image. The
    Company also offers four fully automated product families targeted
    specifically to the assembled printed circuit board and automotive airbag
    markets. These in-line systems are quantitative tools utilizing
    computer-aided design programming interfaces, automated computer image
    analysis, and networked defect data reporting to meet the real-time
    process monitoring needs of the targeted market segments.

        The Company markets its X-ray inspection systems worldwide through a
    network of 20 domestic and 19 international sales representatives.

        Confocal Laser Scanning Microscopes. The Company develops,
    manufactures, and markets confocal laser scanning microscopy equipment.
    Confocal laser scanning microscopy is a relatively new imaging technology
    that involves a research-grade optical microscope equipped with
    additional optical elements and a laser light source to enhance depth
    resolution and create more sharply focused images from thick specimens,
    as well as sharp contrast surface imaging of opaque materials.
    Applications range from neurobiology research to analysis of chocolate
    fat composition for optimal texture.

        The Company's confocal microscopy products offer high quality
    confocal digital imaging with flexible scanning capabilities, ranging
    from a few frames per second to super-video speeds of 480 frames per
    second. Super-video imaging speeds allow users to observe dynamic events

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    that occur faster than can be seen by the human eye. In response to
    customer demand for a system that could meet the needs of multiple users,
    the Company has introduced a confocal laser scanning microscope that
    produces both super-video rates and high-resolution images.

        The U.S., Europe, and Japan represent an estimated 30%, 30%, and 35%,
    respectively, of the worldwide market for confocal microscopes. Life
    science research represents an estimated 75% of the market for confocal
    microscopes and the materials science market represents the balance.
    Within the life science segment of the market, an estimated 60% of units
    are sold to universities, 15% to government laboratories, and the balance
    to the pharmaceutical and food processing industries.

        The Company sells its confocal laser scanning microscope directly
    through three employees in the United States, one in England, and through
    a network of distributors and sales representatives in the rest of the
    world. 

        Scanning Probe Microscopes. Through its recently acquired PSI
    subsidiary, the Company designs, manufactures, and sells a family of
    scanning probe microscopes, including vacuum, ambient air, and liquid
    cell systems. Scanning probe microscopy is a new imaging tool that offers
    three-dimensional resolution used for studying the surface properties of
    materials down to the atomic level. Scanning probe microscope
    capabilities include measuring physical surface properties such as
    magnetic fields, surface conductivity, and static charge distribution.
    Applications range from analyzing roughness to imaging micron-sized
    protrusions on the surface of a living cell.

        The Company's instruments are used for academic, semiconductor,
    computer storage, materials science, optics, and life science
    applications. The Company sells its scanning probe microscopes through a
    direct sales force, representatives, and distributors throughout the
    world.

        Revenues from imaging and inspection systems represented 55%, 49%,
    and 70% of the Company's total revenues in 1996, 1995, and 1994,
    respectively.

        (ii) and (xi) New Products; Research and Development

        The Company maintains active programs for the development of both
    hardware and software to create new applications for its instruments that
    address related market segments and to enhance existing applications.
    Research and development expenses for the Company were $12,910,000,
    $9,036,000, and $4,149,000 in 1996, 1995, and 1994, respectively.

        (iii) Raw Materials

        Raw materials, components, and supplies purchased by the Company are
    either available from a number of different suppliers or from alternative
    sources that could be developed without a material adverse effect on the
    Company's business. To date, the Company has experienced no difficulties
    in obtaining these materials.

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        (iv) Patents, Licenses, and Trademarks

        The Company's policy is to protect its intellectual property rights
    and to apply for patent protection when appropriate. The Company is the
    owner of a number of patents. Patent protection provides the Company with
    competitive advantages with respect to certain instruments. The Company
    believes, however, that technical know-how and trade secrets are more
    important to its business than patent protection.

        (v) Seasonal Influences

        There are no significant seasonal influences on the Company's sales
    of its products.

        (vi) Working Capital Requirements

        There are no special inventory requirements or credit terms extended
    to customers that would have a material adverse effect on the Company's
    working capital requirements.

        (vii) Dependency on a Single Customer

        No single customer accounted for more than 10% of the Company's total
    revenues in any of the past three years.

        (viii) Backlog

        The Company's backlog of firm orders was $24.5 million as of December
    28, 1996, and $14.3 million as of December 30, 1995. The Company believes
    that substantially all of the backlog as of December 28, 1996, will be
    shipped during 1997. The Company does not believe that the size of its
    backlog is necessarily indicative of intermediate or long-term trends in
    its business.

        (ix) Government Contracts

        Not applicable.

        (x) Competition

        The Company competes primarily on the basis of technical advances
    that result in new products and improved price/performance ratios and
    reputation among customers as a quality leader for products and services.
    To a lesser extent, the Company competes on the basis of price. The
    Company is not aware of any other company that competes with it in all of
    its product lines. Some of the Company's competitors have resources
    substantially greater than those of the Company.

    Digital Signal Measurement Instruments

        In the digital signal measurement instrument market, the Company
    competes on the basis of its software capability, which provides
    real-time analysis and permits nontechnical personnel to operate its
    instruments, the quality of its signal conditioning, its range of
    analysis capabilities, and its ability to offer fully integrated systems.

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    To a lesser extent, the Company competes on price. In addition to the
    Company, the market for digital oscillographic recorders is characterized
    by competition among a number of competitors, including Astro-Med, Inc.
    and Yokogawa Corporation. The general purpose DSO market is dominated by
    Tektronix, Inc. and Hewlett-Packard Co. (HP). Competitors in the
    high-accuracy line include companies whose participation in this business
    is secondary to their focus on one or more vertical markets, and several
    small companies which directly compete with the Company. Competition for
    data acquisition systems ranges from manufacturers of entire systems,
    such as HP, to manufacturers of specialty printed circuit boards and
    software and analysis packages, such as National Instruments Corporation.

    Imaging and Inspection Systems

        The Company competes in both the high- and mid-ends of the X-ray
    microanalysis market. In the high end of this market, the Company offers
    superior imaging and user-interface software. By incorporating computer
    workstations in its systems, the Company believes it offers its customers
    superior ability to collect, analyze, and display images, and to network
    into a broader laboratory environment. The Company also offers mid-level
    products in this market, with instruments that operate on a personal
    computer platform. The Company competes in the mid end of this market on
    the basis of quality, performance, and price. The primary competitor in
    this segment is Link Analytical Limited, a wholly owned subsidiary of
    Oxford Instruments plc (Oxford).

        The Company's X-ray fluorescence product offerings compete in the
    high end of this market. The Company believes that its combination of
    world-leading X-ray source and detector technology gives its products
    unique capabilities for industrial process analysis. The Company competes
    on the basis of quality, performance, technology, and price. The primary
    competitors in this segment are Horiba Ltd., Seiko Instruments Inc.
    (Seiko), and Jordan Valley Applied Radiation, Ltd.

        The Company competes in the specialty X-ray source market on the
    basis of quality and price. The Company believes that the compact nature
    of its portable X-ray products make them suitable for a wider variety of
    applications than the products of its competitors. Competitors in such
    markets include True Focus Inc., Oxford, and Hamamatsu Photonics KK.

        In the X-ray inspection market, the Company competes on the basis of
    superior imaging performance, imaging analysis algorithms, customer
    applications expertise, overall machine flexibility and quality, and
    price. In the manual segment of the X-ray inspection market, the Company
    competes primarily with a few small companies. In the automated segment,
    its main competitor is Four Pi, a subsidiary of HP. No company occupies
    an across-the-board dominant position. Competitors also include
    manufacturers of visible and laser-based inspection systems.

        The Company competes primarily in the digital video imaging segment
    of the confocal microscopy market. The Company believes that its ability
    to capture 480 images per second makes its microscopes attractive to
    customers in the market place. The Company also competes by offering a
    highly integrated software package to its customers. The Company competes
    only to a lesser extent on the basis of price. The Company believes it

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    holds a minor market share of the overall confocal life sciences market,
    and a significant share of the smaller digital video imaging segment.
    Major competitors include Bio-Rad Laboratories, Inc., Carl Zeiss, Inc.,
    and Leica PLC. In the digital video imaging segment, Nikon, Inc. is the
    Company's primary competitor.

        The Company competes in the scanning probe microscope market on the
    basis of quality and, to a lesser extent, price. The dominant competitor
    in this market is Digital Instruments Inc. Other competitors include
    Seiko and Topometrix Corporation. 

        (xii) Environmental Protection Regulations

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

        (xiii) Number of Employees

        As of December 28, 1996, the Company employed approximately 790
    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 11 to Consolidated Financial
    Statements in the Registrant's 1996 Annual Report to Shareholders and is
    incorporated herein by reference.

    (e) Executive Officers of the Registrant

                                      Present Title (Year First Became
    Name                       Age    Executive Officer)
    -----------------------------------------------------------------------
    Theo Melas-Kyriazi         37     President and Chief Executive Officer
                                        (1994)
    Christopher J. Barron      48     Vice President (1994)
    Ronald W. Lindell          45     Vice President (1994)
    John N. Hatsopoulos        62     Vice President and Chief Financial
                                        Officer (1994)
    Paul F. Kelleher           54     Chief Accounting Officer (1994)

        Each executive officer serves until his successor is chosen or
    appointed by the Board of Directors and qualified or until earlier
    resignation, death, or removal. Messrs. Hatsopoulos and Kelleher have
    held comparable positions for at least five years with Thermo Instrument
    and Thermo Electron. Mr. Melas-Kyriazi has been President and Chief
    Executive Officer of the Company since August 1994 and, from 1988 to
    August 1994, was the Treasurer of Thermo Instrument and Thermo Electron.
    Mr. Barron has been a Vice President of the Company since August 1994 and
    President of Nicolet Instrument Technologies, Inc. since August 1993. Mr.
    Barron held various positions within Nicolet Instrument Corporation
    (Nicolet) from May 1988 to August 1993. Nicolet is a wholly owned

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    subsidiary of Thermo Optek Corporation, a publicly traded, majority-owned
    subsidiary of Thermo Instrument. Mr. Lindell has been a Vice President of
    the Company since August 1994 and President of Nicolet Imaging Systems
    since January 1994. Mr. Lindell was a founder of Imaging Systems
    International, Inc. and its President from November 1992 to January 1994.
    From November 1989 to March 1992, he was Senior Vice President and
    General Manager of the Industrial Products Division of IRT Corporation.
    Each of the above-named officers is a full-time employee of the Company
    except for Messrs. Hatsopoulos and Kelleher, who 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

        The Company owns approximately 230,000 square feet of office,
    engineering, laboratory, and manufacturing space in Middleton, Wisconsin;
    Hainault, England; Valencia, California; and San Diego, California. The
    Company leases approximately 230,000 square feet of additional office,
    engineering, laboratory, and manufacturing space under leases expiring
    from 1997 through 2005, principally in Valley View, Ohio; San Diego,
    California; Sunnyvale, California; Scotts Valley, California; and in
    Madison, Wisconsin. The Company believes that its facilities are in good
    condition and are suitable and adequate for its present operations.


    Item 3. Legal Proceedings

        Not applicable.


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

        Not applicable.











                                       12PAGE
<PAGE>
                                     PART II

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

        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 1996 Annual Report to Shareholders
    and is incorporated herein by reference.


    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 1996 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 1996 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 December 28,
    1996, and Supplementary Data are included in the Registrant's 1996 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.


                                       13PAGE
<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.



                                       14PAGE
<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 schedules set forth in
                 the list below are 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

             On August 19, 1996, the Company filed a Current Report on Form
             8-K pertaining to its acquisition of substantially all of the
             assets of NK Instruments Inc., a wholly owned subsidiary of the
             Company's parent, Thermo Instruments Inc. On October 1, 1996,
             the Company filed an amendment on Form 8-K/A, the purpose of
             which was to file the financial information required by Form 8-K
             concerning this acquisition.

    (c)      Exhibits

             See Exhibit Index on the page immediately preceding exhibits.

                                       15PAGE
<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 by the undersigned, thereunto duly authorized.

    Date: March 17, 1997             THERMOSPECTRA CORPORATION


                                     By:Theo Melas-Kyriazi
                                     --------------------------------
                                     Theo Melas-Kyriazi
                                     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, as of March 17, 1997.


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

    By: Theo Melas-Kyriazi         President, Chief Executive Officer,
        --------------------
        Theo Melas-Kyriazi           and Director

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

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

    By: Elias P. Gyftopoulos       Director
        --------------------
        Elias P. Gyftopoulos

    By: Earl R. Lewis              Chairman of the Board and Director
        --------------------
        Earl R. Lewis

    By: Arvin H. Smith             Director
        --------------------
        Arvin H. Smith

    By: Michael P. Stansky         Director
        --------------------
        Michael P. Stansky

                                       16PAGE
<PAGE>
                    Report of Independent Public Accountants
                    ----------------------------------------


    To the Shareholders and Board of Directors of ThermoSpectra Corporation:

        We have audited, in accordance with generally accepted auditing
    standards, the consolidated financial statements included in
    ThermoSpectra Corporation's Annual Report to Shareholders incorporated by
    reference in this Form 10-K, and have issued our report thereon dated
    February 11, 1997 (except with respect to certain matters discussed in
    Note 13, as to which the date is March 12, 1997). 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 15 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 11, 1997






                                       17PAGE
<PAGE>
  SCHEDULE II
                            THERMOSPECTRA CORPORATION

                        Valuation And Qualifying Accounts
                                 (In thousands)


                     Balance  Provision
                          at    Charged             Accounts            Balance
                   Beginning         to    Accounts  Written             at End
  Description        of Year    Expense   Recovered      Off  Other(a)  of Year
  -----------------------------------------------------------------------------
  Year Ended
    December 28, 1996

      Allowance for
        Doubtful
        Accounts      $1,095     $  199      $    1   $ (436)  $  657   $1,516

  Year Ended
    December 30, 1995

      Allowance for
        Doubtful
        Accounts      $1,007     $  192      $    -   $ (559)  $  455   $1,095

  Year Ended
    December 31, 1994

      Allowance for
        Doubtful
        Accounts      $   89     $  375      $   20   $  (17)  $  540   $1,007

  (a) Includes allowance of businesses acquired during the year as described
      in Note 2 to Consolidated Financial Statements in the Registrant's 1996
      Annual Report to Shareholders and the effect of foreign currency
      translation.


                                       18PAGE
<PAGE>
                                  EXHIBIT INDEX

    Exhibit
    Number     Description of Exhibit

      2.1      Asset Purchase Agreement dated as of August 5, 1996, between
               the Registrant and Thermo Instrument Systems Inc. for the
               purchase of the Kevex businesses (filed as Exhibit 2 to the
               Registrant's Quarterly Report on form 10-Q for the quarter
               ended June 29, 1996 [File No. 1-13876] and incorporated
               herein by reference).

      2.2      Agreement and Plan of Merger dated as of January 30, 1997, by
               and among the Registrant, Park Acquisition Corp., and Park
               Scientific Instruments Corporation. Pursuant to Item
               601(b)(2) of Regulation S-K, schedules to this Agreement have
               been omitted. The Registrant hereby undertakes to furnish
               supplementally a copy of such schedules to the Commission
               upon request.

      3.1      Certificate of Incorporation of the Registrant (filed as
               Exhibit 3.1 to the Registrant's Registration Statement on
               Form S-1 [Reg. No. 33-93778] and incorporated herein by
               reference).

      3.2      By-Laws of the Registrant (filed as Exhibit 3.2 to the
               Registrant's [Reg. No. 33-93778] and incorporated herein by
               reference).

     10.1      Corporate Services Agreement dated as of August 10, 1994,
               between the Registrant and Thermo Electron Corporation (filed
               as Exhibit 10.1 to the Registrant's Registration Statement on
               Form S-1 [Reg. No. 33-93778] 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 August 10, 1994, between
               the Registrant and Thermo Electron (filed as Exhibit 10.3 to
               the Registrant's Registration Statement on Form S-1 [Reg. No.
               33-93778] and incorporated herein by reference).

     10.4      Amended and Restated Master Repurchase Agreement dated as of
               December 28, 1996, between the Registrant and Thermo
               Electron.

     10.5      Master Guarantee Reimbursement Agreement dated as of August
               10, 1994, between the Registrant and Thermo Electron (filed
               as Exhibit 10.5 to the Registrant's Registration Statement on
               Form S-1 [Reg. No. 33-93778] and incorporated herein by
               reference).

                                       19PAGE
<PAGE>
                                  EXHIBIT INDEX

    Exhibit
    Number     Description of Exhibit

     10.6      Master Guarantee Reimbursement Agreement dated as of August
               10, 1994, between the Registrant and Thermo Instrument (filed
               as Exhibit 10.6 to the Registrant's Registration Statement on
               Form S-1 [Reg. No. 33-93778] and incorporated herein by
               reference).

     10.7      ThermoSpectra - Park Scientific Instruments Corporation 1988
               Incentive Stock Option Plan.

     10.8      Lease Agreement dated as of November 30, 1995, between
               Nicolet Instrument Corporation and Nicolet Instrument
               Technologies, Inc. (filed as Exhibit 10.8 to the Registrant's
               1995 Annual Report on Form 10-K [File No. 1-13876] and
               incorporated herein by reference).

     10.9      Lease Agreement dated as of July 26, 1989, between Gould
               Instrument Systems, Inc. (successor-in-interest to Gould,
               Inc.) and Linclay (filed as Exhibit 10.9 to the Registrant's
               Registration Statement on Form S-1 [Reg. No. 33-93778] and
               incorporated herein by reference).

     10.10     Lease Agreement dated as of October 19, 1994, between RREEF
               West-VI, Inc. and Thermo Instrument (filed as Exhibit 10.10
               to the Registrant's Registration Statement on Form S-1 [Reg.
               No. 33-93778] and incorporated herein by reference).

     10.11     Stock Purchase Agreement dated as of May 10, 1995, among the
               Registrant, Thermo Instrument, and Japan Energy Corporation
               (filed as Exhibit 10.11 to the Registrant's Registration
               Statement on Form S-1 [Reg. No. 33-93778] and incorporated
               herein by reference).

     10.12     $7.3 Million Note due September 2001 issued to Thermo
               Instrument (filed as Exhibit 10.17 to the Registrant's
               Registration Statement on Form S-1 [Reg. No. 33-93778] and
               incorporated herein by reference).

     10.13     Equity Incentive Plan of the Registrant (filed as Exhibit
               10.18 to the Registrant's Registration Statement on Form S-1
               [Reg. No. 33-93778] and incorporated herein by reference).

               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 Thermo Instrument for services rendered to the
               Registrant or such affiliated corporations. Thermo Electron's
               plans were filed as Exhibits 10.21 through 10.44 to the
               Annual Report on Form 10-K of Thermo Electron for the fiscal
               year ended December 30, 1995 [File No. 1-8002] and as Exhibit
               10.19 to the Annual Report on Form 10-K of Trex Medical
               Corporation for the fiscal year ended September 28, 1996

                                       20PAGE
<PAGE>
                                  EXHIBIT INDEX

    Exhibit
    Number     Description of Exhibit

               [File No. 1-11827], and Thermo Instrument's plans were filed
               as Exhibits 10.18 through 10.27 to the Annual Report on Form
               10-K of Thermo Instrument for the fiscal year ended December
               28, 1996 [File No. 1-9786], and are incorporated herein by
               reference.

     10.14     Deferred Compensation Plan for Directors of the Registrant
               (filed as Exhibit 10.19 to the Registrant's Registration
               Statement on Form S-1 [Reg. No. 33-93778] and incorporated
               herein by reference).

     10.15     Directors' Stock Option Plan of the Registrant (filed as
               Exhibit 10.20 to the Registrant's Registration Statement on
               Form S-1 [Reg. No. 33-93778] and incorporated herein by
               reference). 

     10.16     Form of Indemnification Agreement for Officers and Directors
               (filed as Exhibit 10.21 to the Registrant's Registration
               Statement on Form S-1 [Reg. No. 33-93778] and incorporated
               herein by reference).

     10.17     Restated Stock Holdings Assistance Plan and Form of
               Promissory Note.

     10.18     $15,000,000 Promissory Note dated as of August 5, 1996,
               issued by the Registrant to Thermo Electron (filed as Exhibit
               10.1 to the Registrant's Quarterly Report on Form 10-Q for
               the quarter ended June 29, 1996 [File No. 1-13876] and
               incorporated herein by reference).

     10.19     $10,000,000 Promissory Note dated as of March 12, 1997,
               issued by the Registrant to Thermo Electron.

     11        Statement re: Computation of earnings per share.

     13        Annual Report to Shareholders for the year ended December 28,
               1996 (only those portions incorporated herein by reference).

     21        Subsidiaries of the Registrant.

     23        Consent of Arthur Andersen LLP.

     27        Financial Data Schedule.


                                                        Exhibit 2.2
                                                       Execution Copy
                         AGREEMENT AND PLAN OF MERGER

          Agreement entered into as of January 30, 1997 by and among
          ThermoSpectra Corporation, a Delaware corporation (the
          "Buyer"), Park Acquisition Corp., a Delaware corporation and
          a wholly-owned subsidiary of the Buyer (the "Transitory
          Subsidiary"), and Park Scientific Instruments Corporation, a
          California corporation (the "Company"). The Buyer, the
          Transitory Subsidiary and the Company are referred to
          collectively herein as the "Parties."

          This Agreement contemplates a merger of the Transitory
          Subsidiary into the Company. In such merger, the
          shareholders of the Company will receive cash in exchange
          for their capital stock of the Company.

          Now, therefore, in consideration of the representations,
          warranties and covenants herein contained, the Parties agree
          as follows.

                                    ARTICLE I
                                   THE MERGER

          1.1  THE MERGER.  At the Effective Time (as defined in
          Section 1.3 below), in accordance with this Agreement, the
          General Corporation Law of the State of California (the
          "California Law") and the Delaware General Corporation Law
          (the "Delaware Law"), the Transitory Subsidiary shall be
          merged with and into the Company (the "Merger"), the
          separate existence of the Transitory Subsidiary shall cease
          and the Company shall continue as the surviving corporation.
          The Company is hereinafter sometimes referred to as the
          "Surviving Corporation." At the election of the Buyer, any
          direct or indirect wholly-owned subsidiary of the Buyer
          organized under the laws of a state of the United States may
          be substituted for the Transitory Subsidiary as a
          constituent corporation in the Merger for purposes of this
          Section 1.1. At the election of the Buyer, the Merger may be
          structured so that the Company shall be merged with and into
          the Transitory Subsidiary with the result that the
          Transitory Subsidiary shall be the "Surviving Corporation."
          If the Buyer elects to structure the Merger so that the
          Transitory Subsidiary, rather than the Company, is the
          Surviving Corporation, (a) the inaccuracy of any
          representation or warranty of the Company which is premised
          on the assumption that the Company shall be the Surviving
          Corporation, which representation or warranty becomes
          inaccurate solely as the result of the Transitory
          Subsidiary, rather than the Company, being the Surviving
          Corporation, shall not be deemed to be a breach of such
          representation or warranty and shall not release Buyer and
          the Transitory Subsidiary from their duties and obligations
                                        1PAGE
<PAGE>
          under this Agreement, (b) the other provisions of this
          Agreement relating to the Merger (including without
          limitation Section 1.4) shall be deemed to be appropriately
          modified to reflect such alternative structure  and (c) any
          Taxes incurred by the Company that would not have been
          incurred had the Company been the Surviving Corporation
          shall be the responsibility of Buyer and Transitory
          Subsidiary and such Taxes shall not give rise to any
          obligation on the part of the Company Shareholders, as
          defined below, or to any liability to be reflected in the
          Closing Balance Sheet, as defined below.

          1.2  EFFECT OF THE MERGER.  At the Effective Time, the
          Surviving Corporation shall continue its corporate existence
          under the laws of the State of California and the Merger
          shall have the effects set forth in Section 259 of the
          Delaware Law and Section 1107 of the California Law.

          1.3  CONSUMMATION OF THE MERGER.  At the Closing (as defined
          in Section 1.6), the Parties will cause the Merger to be
          consummated by delivering to the Secretary of State of the
          State of Delaware a certificate of merger and by delivering
          to the Secretary of State of the State of California an
          agreement of merger, together with officer's certificates,
          each in such form or forms as may be required by, and
          executed and acknowledged in accordance with, the relevant
          provisions of the Delaware Law and the California Law (such
          documents being referred to collectively as the "Merger
          Documents"), and shall make all other filings and recordings
          required by the Delaware Law and the California Law in
          connection with the Merger. The Merger shall become
          effective at the time of filing of the appropriate Merger
          Documents with the Secretary of State of the State of
          California, or at such later time, which shall be as soon as
          reasonably practicable, specified as the effective time in
          the Merger Documents (the "Effective Time").

          1.4  ARTICLES OF INCORPORATION; BYLAWS; DIRECTORS AND
          OFFICERS.  The Articles of Incorporation and Bylaws of the
          Surviving Corporation shall be the Articles of Incorporation
          and Bylaws of the Company as in effect immediately prior to
          the Effective Time until thereafter amended as provided
          under the California Law. The directors of the Transitory
          Subsidiary immediately prior to the Effective Date will be
          the initial directors of the Surviving Corporation, and the
          officers of the Company immediately prior to the Effective
          Time will be the initial officers of the Surviving
          Corporation, in each case until their successors are elected
          and qualified.

          1.5  CONVERSION OF SHARES.

          (a) At the Effective Time, by virtue of the Merger and
          without any action on the part of the Transitory Subsidiary,

                                        2PAGE
<PAGE>
          the Company, the Surviving Corporation or the holder of any
          of the following securities:

          (i) Subject to Section 1.5(b), (c) and (d), each share
          (other than shares to be canceled pursuant to clause (vi)
          below) of the Company's common stock (the "Company Common
          Stock") issued and outstanding immediately prior to the
          Effective Time (the "Outstanding Common Stock") shall be
          canceled and extinguished and be converted into and become
          the right to receive that amount of cash, without interest
          (the "Common Stock Consideration"), equal to the quotient of
           (A) $16,055,656 less all payments made pursuant to clauses
          (ii) through (v) below, divided by (B) the sum of the total
          shares of Outstanding Common Stock and the total number of
          shares of Company Common Stock underlying the Company
          Options (as defined below) which are granted, vested and
          outstanding immediately prior to the Effective Time (the
          "Vested Option Shares").

          (ii) Subject to Section 1.5(b), (c) and (d), each share
          (other than shares to be canceled pursuant to clause (vi)
          below) of the Company's Series B Preferred Stock ("Series B
          Stock") issued and outstanding immediately prior to the
          Effective Time (the "Outstanding Series B Stock") shall be
          canceled and extinguished and be converted into the right to
          receive $2.00 in cash, without interest.

          (iii) Subject to Section 1.5(b), (c) and (d), each share
          (other than shares to be canceled pursuant to clause (vi)
          below) of the Company's Series C Preferred Stock (the
          "Series C Stock") issued and outstanding immediately prior
          to the Effective Time (the "Outstanding Series C Stock")
          shall be canceled and extinguished and be converted into the
          right to receive $1.25 in cash, without interest.

          (iv) Subject to Section 1.5(b), (c) and (d), each share
          (other than shares to be canceled pursuant to clause (vi)
          below) of the  Company's Series D Preferred Stock (the
          "Series D Stock") issued and outstanding immediately prior
          to the Effective Time (the "Outstanding Series D Stock")
          shall be canceled and extinguished and be converted into the
          right to receive $1.274 in cash, without interest.

          (v) Subject to Section 1.5(b), (c) and (d), each share
          (other than shares to be canceled pursuant to clause (vi)
          below) of the Company's Series E Preferred Stock ("Series E
          Stock") issued and outstanding immediately prior to the
          Effective Time (the "Outstanding Series E Stock") shall be
          canceled and extinguished and be converted into the right to
          receive $1.274 in cash, without interest. The Outstanding
          Common Stock, Outstanding Series B Stock, Outstanding Series
          C Stock, Outstanding Series D Stock and Outstanding Series E
          Stock are sometimes collectively referred to herein as the
          "Company Shares."

                                        3PAGE
<PAGE>
          (vi) Each Company Share that is issued and outstanding
          immediately prior to the Effective Time and owned by the
          Buyer, the Transitory Subsidiary or the Company or any
          direct or indirect subsidiary of the Buyer, the Transitory
          Subsidiary or the Company, shall be canceled and retired,
          and no payment shall be made with respect thereto.

          (vii) Each share of the Transitory Subsidiary's capital
          stock issued and outstanding immediately prior to the
          Effective Time shall be converted into and become one
          validly issued, fully paid and nonassessable share of the
          same class of capital stock of the Surviving Corporation.

          (b) The aggregate amount of cash paid in consideration for
          the Company Shares (the "Merger Consideration") shall be
          subject to adjustment after the Closing Date as follows:

          (i)  Within 60 days after the Closing Date (as defined in
          Section 1.6), the Buyer shall prepare and deliver to Craig
          Taylor, as representative of the Company Shareholders (the
          "Company Shareholder Representative"), a balance sheet
          reflecting the Net Assets (as defined below) of the Company
          as of the Closing Date (the "Draft Closing Balance Sheet").
          The Buyer shall prepare the Draft Closing Balance Sheet in
          accordance with GAAP (as defined in Section 2.6 below) as
          applied consistent with the Company's past accounting
          periods. For purposes of this Agreement "Net Assets" shall
          mean total assets of the Company (excluding any cash
          resulting from the exercise of Company Options prior to the
          Closing) minus total liabilities of the Company (excluding
          any liability to Needham & Company, Inc. or to John
          Schwabacher pursuant to engagement letters dated March 4,
          1996 and January 1, 1996, respectively (together, the
          "Engagement Letters")).

          (ii)  On the same day on which the Buyer delivers the Draft
          Closing Balance Sheet to the Company Shareholder
          Representative, the Buyer shall also deliver to the Company
          Shareholder Representative a statement (the "Draft Closing
          Backlog Statement") reflecting, as of the Closing Date, the
          Company's backlog of binding purchase orders from customers
          in the United States with firm shipment dates no later than
          120 days after the Closing Date and the Company's backlog of
          orders from its Subsidiaries, provided that any such
          Subsidiary has binding purchase orders from third party
          customers with firm shipment dates no later than 120 days
          after the Closing Date equal to such backlog (collectively,
          the "Closing Backlog").  Closing Backlog shall also include
          all verbal purchase orders received by the Company and
          assigned purchase order numbers by customers as of the
          Closing Date, provided that the Company shall receive within
          five business days after the Closing Date a binding written
          purchase order with firm shipment date no later than 120

                                        4PAGE
<PAGE>
          days after the Closing Date relating to any such verbal
          purchase order.  Immediately prior to the Closing, the chief
          financial officer of the Company shall deliver to the Buyer
          and the Transitory Subsidiary a certificate setting forth
          the verbal purchase orders outstanding as of the Closing
          Date.  For purposes of determining verbal purchase orders
          received as of the Closing Date such certificate shall be
          conclusive.

          (iii)  The Company Shareholder Representative shall deliver
          to the Buyer within 60 days after receiving the Draft
          Closing Balance Sheet and the Draft Closing Backlog
          Statement a detailed statement describing his objections (if
          any) thereto. Failure of the Company Shareholder
          Representative so to object to the Draft Closing Balance
          Sheet or the Draft Closing Backlog Statement shall
          constitute acceptance thereof, whereupon the Draft Closing
          Balance Sheet and the Draft Closing Backlog Statement shall
          be deemed to be the "Closing Balance Sheet" and the "Closing
          Backlog Statement," respectively . The Buyer and the Company
          Shareholder Representative shall use reasonable efforts to
          resolve any such objections, but if they do not reach a
          final resolution within 30 days after the Buyer has received
          the statement of objections, the Buyer and the Company
          Shareholder Representative shall select an internationally
          recognized accounting firm mutually acceptable to them (the
          "Neutral Auditors") to resolve any remaining objections. If
          the Buyer and the Company Shareholder Representative are
          unable to agree on the choice of Neutral Auditors, they
          shall select by lot a "big six" accounting firm other than
          Deloitte & Touche LLP and Arthur Andersen LLP as Neutral
          Auditors. The Draft Closing Balance Sheet shall be adjusted
          by the Neutral Auditors only to conform to GAAP and, as so
          adjusted, shall constitute the Closing Balance Sheet.   The
          Draft Closing Backlog Statement shall be adjusted by the
          Neutral Auditors only to conform to the definition of
          Closing Backlog and, as so adjusted, shall constitute the
          Closing Backlog Statement.  All such adjustments by the
          Neutral Auditors shall be conclusive and binding upon the
          Buyer and the shareholders of the Company as of the
          Effective Time (the "Company Shareholders"). The Buyer, on
          one hand, and the Company Shareholders, on the other, shall
          share equally the fees and expenses of the Neutral Auditors.
          The Company Shareholders' portion of such fees and expenses
          shall be deducted from the Escrow Amount (as defined in
          Section 1.10) and returned by the Escrow Agent (as defined
          in Section 1.7) to the Buyer, as provided in the Escrow
          Agreement (as defined in Section 1.7), which will pay such
          amount to the Neutral Auditors.

          (iv)  During the period of any dispute referred to above,
          the Buyer shall cooperate fully with the Company Shareholder
          Representative and the Company Shareholder Representative's
          accountants. The Company Shareholder Representative and the

                                        5PAGE
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          Company Shareholder Representative's accountants shall have
          access to all books and records and other information of the
          Company reasonably necessary for the evaluation of the Draft
          Closing Balance Sheet and the Draft Closing Backlog
          Statement; provided, however, that any such access shall be
          allowed only in such manner as not to interfere unreasonably
          with the operations of the Company.

          (v)  If the Net Assets as shown on the Closing Balance Sheet
          are less than $2,772,500 then an amount equal to such
          shortfall shall be deducted from the Escrow Amount and
          returned by the Escrow Agent to the Buyer as provided in the
          Escrow Agreement, and such amount shall not be paid in
          consideration for the Company Shares in the Merger.

          (vi)  Provided that Closing Backlog is greater than or equal
          to $2,150,000, if the Net Assets as shown on the Closing
          Balance Sheet are more than $2,772,500 then an amount equal
          to such excess shall be added to the Escrow Amount and, at
          the discretion of the Company Shareholder Representative,
          either (A) paid to the Company Shareholder Representative
          (for distribution to the Company Shareholders) by the Escrow
          Agent within twenty (20) business days following the
          acceptance of the Closing Balance Sheet, provided that the
          Escrow Agent and the Buyer are notified by the Company
          Shareholder Representative of such payment at least ten (10)
          business days prior to the date of such payment or (B) held
          by the Escrow Agent pursuant to the Escrow Agreement, in
          which case such amount shall be deemed to have been paid in
          consideration for the Company Shares in the Merger.

          (vii)  If the Closing Backlog as shown on the Closing
          Backlog Statement is less than $1,900,000, then an amount
          equal to fifty percent (50%) of such shortfall shall be
          deducted from the Escrow Amount and returned by the Escrow
          Agent to the Buyer as provided in the Escrow Agreement, and
          such amount shall not be paid in consideration for the
          Company Shares in the Merger.

          (viii)  If the Closing Backlog as shown on the Closing
          Backlog Statement is greater than $2,150,000, then an amount
          equal to fifty percent (50%) of such excess shall be added
          to the Escrow Amount and, at the discretion of the Company
          Shareholder Representative, either (A) paid to the Company
          Shareholder Representative (for distribution to the Company
          Shareholders) by the Escrow Agent within twenty (20)
          business days following the acceptance of the Closing
          Balance Sheet, provided that the Escrow Agent and the Buyer
          are notified by the Company Shareholder Representative of
          such payment at least ten (10) business days prior to the
          date of such payment or (B) held by the Escrow Agent
          pursuant to the Escrow Agreement, in which case such amount
          shall be deemed to have been paid in consideration for the
          Company Shares in the Merger.

                                        6PAGE
<PAGE>
          (ix)  If the Closing Backlog is greater than or equal to the
          sum set forth in (vii) above and less than or equal to the
          sum set forth in (viii) above, then no amount shall be
          deducted from or added to the Escrow Amount.

          (x)  The adoption of this Agreement and the approval of the
          Merger by the shareholders of the Company shall constitute
          approval of the appointment of the Company Shareholder
          Representative and ratification of all actions taken by the
          Company Shareholder Representative pursuant to this Section
          1.5(b).

          (c)  Upon the payment of the Merger Consideration as
          provided in Section 1.9, $3,518,800 of such consideration
          (the "Initial Escrow Amount") shall be withheld from the
          payment that Company Shareholders are entitled to receive
          pursuant to Section 1.5(a), and placed in an escrow account
          as described in Section 1.10.  Such withholding shall be
          made pro rata based on the portion of Merger Consideration
          that each Company Shareholder would have been entitled to
          receive but for the creation of such escrow.  The
          consideration paid net of the Initial Escrow Amount is
          referred to as the "Closing Consideration."

          (d) (i) Company Shares held by a holder who, subject to and
          in accordance with Section 1300 et seq. of the California
          Law, has demanded and perfected his right to an appraisal of
          his Company Shares and has not effectively withdrawn or lost
          his right to such appraisal ("Dissenting Shares"), shall not
          be converted into a right to receive Merger Consideration
          and such holder shall be entitled only to such rights as are
          granted by Section 1300 et seq. of the California Law. If
          after the Effective Time such holder withdraws, with the
          consent of the Surviving Corporation, or loses his right to
          appraisal for his Company Shares, such Company Shares shall
          be treated as if they had been converted as of the Effective
          Time into the right to receive the amount payable in respect
          of such Company Shares pursuant to Section 1.5.

          (ii) The Company shall give the Buyer and the Transitory
          Subsidiary prompt notice of any demands for purchase, or
          notices of intent to demand purchase, received by the
          Company with respect to Company Shares, and the Buyer and
          the Transitory Subsidiary shall have the right to control
          all negotiations and proceedings with respect to such
          demands. The Company shall not, except with the prior
          written consent of the Buyer and the Transitory Subsidiary
          or as otherwise required by law, make any payment with
          respect to, or settle, or offer to settle, any such demands.

          1.6  THE CLOSING.  The closing of the transactions
          contemplated by this Agreement (the "Closing") shall take
          place at the offices of the Buyer in Waltham, Massachusetts,

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<PAGE>
          commencing at 2:00 p.m. local time on, March 5, 1997 or, if
          all of the conditions to the obligations of the Parties to
          consummate the transactions contemplated hereby have not
          been satisfied or waived by such date, on such mutually
          agreeable later date as soon as practicable after the
          satisfaction or waiver of all conditions to the obligations
          of the Parties to consummate the transactions contemplated
          hereby (the "Closing Date").

          1.7  ACTIONS AT THE CLOSING.  At the Closing, (a)  the
          Company shall deliver to the Buyer and the Transitory
          Subsidiary the various certificates, instruments and
          documents referred to in Section 5.2, (b) the Buyer and the
          Transitory Subsidiary shall deliver to the Company the
          various certificates, instruments and documents referred to
          in Section 5.3, (c) the Company and the Transitory
          Subsidiary shall file the Merger Documents as provided in
          Section 1.3, (d) the Buyer, the Company Shareholder
          Representative and the Escrow Agent (as defined therein)
          shall execute and deliver the Indemnification and Escrow
          Agreement attached hereto as Exhibit A (the "Escrow
          Agreement") and (e) the Buyer shall pay the Closing
          Consideration to the Paying Agent (defined below) and the
          Initial Escrow Amount to the Escrow Agent.

          1.8  ADDITIONAL ACTION.  The Surviving Corporation may, at
          any time after the Effective Time, take any action,
          including executing and delivering any document, in the name
          and on behalf of either the Company or the Transitory
          Subsidiary, in order to consummate the transactions
          contemplated by this Agreement.

          1.9  PAYMENT FOR SHARES

          (a) Immediately prior to the Closing, the chief financial
          officer of the Company shall deliver to the Buyer and the
          Transitory Subsidiary a closing certificate (the "Closing
          Certificate"), which shall set forth (i) the total number of
          Vested Option Shares and the total number of Outstanding
          Common Stock, Outstanding  Series B Stock, Outstanding
          Series C Stock, Outstanding Series D Stock and Outstanding
          Series E Stock, and (ii) the Merger Consideration payable
          with respect to each share of Outstanding Common Stock,
          computed in the manner set forth in Section 1.5 hereof.  The
          Closing Certificate shall be accompanied by appropriate
          documentation supporting such computations.  For purposes of
          determining the Merger Consideration payable to holders of
          Company Common Stock, the Closing Certificate shall be
          conclusive and binding upon the Company, the Company
          Shareholders, the Buyer and the Transitory Subsidiary.  The
          determination of the Merger Consideration payable to the
          holders of the Company Common Stock shall be included in the
          Merger Documents.
                                        8PAGE
<PAGE>
          (b) Within five (5) business days following the Closing
          Date, American Stock Transfer & Trust Company (the "Paying
          Agent"), shall transmit to each Company Shareholder a form
          of letter of transmittal (the "Letter of Transmittal") and
          instructions for use in effecting the surrender of each
          certificate representing Company Shares (a "Certificate")
          held by such Company Shareholder in exchange for the Closing
          Consideration represented by such Company Shares. Upon the
          proper surrender of a Certificate, a duly executed Letter of
          Transmittal and any required tax certifications to the
          Paying Agent by a Company Shareholder in accordance with
          such instructions, the Paying Agent shall deliver to such
          Company Shareholder a check for the Closing Consideration
          that such Company Shareholder is entitled to receive,
          without interest. It shall be a condition of such payment
          and delivery that the surrendered Certificate be properly
          endorsed or otherwise in proper form for transfer and that
          the person surrendering such shall pay any transfer or other
          taxes required by reason of such payment or delivery or
          establish to the satisfaction of the Paying Agent, the Buyer
          and/or the Surviving Corporation that such tax has been paid
          or is not applicable. Until so surrendered for payment, each
          Certificate heretofore representing Company Shares (other
          than Dissenting Shares) shall, subject to Section 1.10
          hereof, be deemed for all purposes to evidence the right to
          receive cash as described in accordance with Section 1.5
          above and until so surrendered for payment, the holder of
          such outstanding Certificate shall not have any rights as a
          shareholder of the Company, except such rights, if any, as
          such holder may have with respect to Dissenting Shares and
          shall not be entitled to receive any consideration from the
          Surviving Corporation and/or the Buyer with respect to the
          Company Shares represented by such Certificate.  If
          outstanding Certificates are not surrendered, or the cash
          payment therefor is not claimed prior to thirty (30) months
          after the Effective Time (or, in any particular case, prior
          to such earlier date on which such cash payment would
          otherwise escheat to or become the property of any
          governmental unit or agency), the unclaimed amounts shall,
          to the extent permitted by applicable law, become the
          property of the Buyer, free and clear of all claims or
          interest of any person previously entitled thereto, provided
          that the Buyer shall have given written notice of such event
          to the Company Shareholder Representative at least sixty
          (60) days prior to such transfer.

          (c) In the event any Certificate shall have been lost,
          stolen or destroyed, upon the making of an affidavit of that
          fact by the person claiming such Certificate to be lost,
          stolen or destroyed, the Buyer shall issue in exchange for
          such lost, stolen or destroyed Certificate the cash payable
          in exchange therefor as provided in Section 1.5. The Buyer
          may, in its discretion and as a condition precedent to the
          payment thereof, require the owner of such lost, stolen or

                                        9PAGE
<PAGE>
          destroyed Certificate to give the Buyer a bond in such sum
          as it may direct as indemnity against any claim that may be
          made against the Buyer with respect to the Certificate
          alleged to have been lost, stolen or destroyed.

          1.10  ESCROW.

          (a) The Escrow Amount (as defined in the Escrow Agreement)
          shall be held by the Escrow Agent under the Escrow Agreement
          pursuant to the terms thereof.  The Escrow Amount, which
          shall initially consist of the Initial Escrow Amount, shall
          be held as a trust fund and shall not be subject to any
          lien, attachment, trustee process or any other judicial
          process of any creditor of any party, and shall be held and
          disbursed solely for the purposes and in accordance with the
          terms of the Escrow Agreement. It is intended that the
          assets held in escrow as above provided shall facilitate the
          ability of the Buyer and the Surviving Corporation to
          recover amounts to which they are entitled under this
          Agreement or the Escrow Agreement as a result of
          misrepresentations, breaches of warranties and breaches of
          covenants contained in this Agreement and to satisfy claims
          of the Buyer and the Surviving Corporation arising as a
          result of this Agreement or the Escrow Agreement, including
          satisfaction of the Company's or Company Shareholders'
          obligations under Sections 1.5(b), 8.2 or 8.12 hereof.
          Accordingly, and to the extent necessary to provide such
          protection to the Buyer and the Surviving Corporation,
          property held in escrow thereunder shall be available to
          satisfy claims of the Buyer and the Surviving Corporation
          under this Agreement or the Escrow Agreement to the extent
          provided in such agreements.

          (b) The adoption of this Agreement and the approval of the
          Merger by the Company Shareholders shall constitute approval
          of the Escrow Agreement and of all of the arrangements
          relating thereto, including without limitation the placement
          of the Initial Escrow Amount in escrow and the appointment
          of the Company Shareholder Representative.

          1.11  CLOSING OF TRANSFER BOOKS.  At the Effective Time, the
          stock transfer books of the Company shall be closed and no
          transfer of Company Shares shall thereafter be made. If,
          after the Effective Time, Certificates are presented to the
          Surviving Corporation they shall be canceled and exchanged
          for cash in accordance with Section 1.5, subject to Section
          1.10 and to applicable law in the case of Dissenting Shares.

          1.12  STOCK OPTIONS.  At or prior to the Effective Time,
          Buyer and the Company shall take all action necessary to
          cause the assumption by the Buyer as of the Effective Time
          of the options to purchase Company Common Stock outstanding
          as of the Effective Time (the "Company Options").  The
          Company Options shall be converted without any action on the

                                       10PAGE
<PAGE>
          part of the holders thereof into options (the "Buyer
          Options") to purchase shares of the common stock of the
          Buyer, $.01 par value per share (the "Buyer Common Stock")
          as of the Effective Time.  Under the Buyer Options, the
          number of shares of Buyer Common Stock that each record
          holder of an option agreement which represents a Company
          Option (the "Optionholders") shall be entitled to receive
          upon the exercise of such Buyer Option shall be a number of
          whole and fractional shares of Buyer Common Stock determined
          by multiplying the number of shares of Company Common Stock
          subject to such Company Option, determined immediately
          before the Effective Time, by the ratio equal to the Common
          Stock Consideration divided by $14.75, the closing price of
          the Buyer's Common Stock as quoted on the American Stock
          Exchange on the trading day immediately before the date
          hereof (the "Option Exchange Ratio"). The option exercise
          price of each share of Buyer Common Stock subject to any
          Buyer Option shall be the amount (rounded up to the nearest
          whole cent) obtained by dividing the exercise price per
          share of Company Common Stock at which the assumed Company
          Option was exercisable immediately before the Effective Time
          by the Option Exchange Ratio. The assumption and conversion
          of Company Options to Buyer Options as provided herein shall
          not give the Optionholders additional benefits which they
          did not have immediately prior to the Effective Time, result
          in any acceleration of any vesting schedule for any Company
          Option, or relieve the Optionholders of any obligations or
          restrictions applicable to their options or the shares
          obtainable upon exercise of the options.  The parties intend
          that the assumption and conversion of Company Options shall
          be treated as an issuance or assumption of stock options in
          a transaction to which Section 424(a) applies within the
          meaning of Section 424(a) of the Code (as defined below) and
          this Section 1.12 shall be interpreted and applied
          consistent with such intention. Only whole shares of Buyer
          Common Stock shall be issued upon exercise of any Buyer
          Option and in lieu of receiving any fractional share of
          Buyer Common Stock, the holder of such option shall receive
          in cash the fair market value of the fractional share, net
          of the applicable exercise price of the fractional share and
          applicable withholding taxes.

                                   ARTICLE II
                  REPRESENTATIONS AND WARRANTIES OF THE COMPANY

          The Company represents and warrants to the Buyer that the
          statements contained in this Article II are true and
          correct, except as set forth in the disclosure schedule
          attached hereto as Exhibit B (the "Disclosure Schedule").
          The Disclosure Schedule shall be arranged in paragraphs
          corresponding to the numbered and lettered paragraphs
          contained in this Article II, and the disclosures in any
          paragraph of the Disclosure Schedule shall qualify only the
          corresponding paragraph in this Article II. Each individual

                                       11PAGE
<PAGE>
          representation and warranty contained herein shall be
          interpreted and enforced separately and no representation or
          warranty contained herein shall be construed as limiting any
          other representation and warranty contained herein. The
          Buyer shall be assumed to have relied upon the
          representations and warranties contained herein,
          notwithstanding any investigation of the Company made by the
          Buyer prior to the Closing. The term "ordinary course of
          business", when used in this Article II, shall mean the
          ordinary course of business of the Company consistent with
          its past custom and practice (including with respect to
          frequency and amount).

          2.1  ORGANIZATION, QUALIFICATION AND CORPORATE POWER.  The
          Company is a corporation duly organized, validly existing
          and in corporate and tax good standing under the laws of the
          state of California. The Company is duly qualified to
          conduct business and is in corporate and tax good standing
          as a foreign corporation in each jurisdiction in which the
          failure to so qualify would have a Material Adverse Effect
          (as defined below).  The Company has all requisite corporate
          power and authority to carry on the businesses in which it
          is engaged and to own and use the properties owned and used
          by it. The Company has furnished to the Buyer true and
          complete copies of its Amended and Restated Articles of
          Incorporation together with the Certificate of Determination
          filed November 15, 1995 (collectively, the "Amended and
          Restated Articles of Incorporation") and Bylaws, each as
          amended and as in effect on the date hereof.  Each amendment
          to the Company's Amended and Restated Articles of
          Incorporation has been duly adopted by all requisite
          director and shareholder action and in accordance with all
          applicable law.  The Company is not in default under or in
          violation of any provision of its Amended and Restated
          Articles of Incorporation or Bylaws or any other instrument,
          document or agreement setting forth the terms and conditions
          of any shares of capital stock or other securities of the
          Company, or the rights and obligations of any holder of such
          shares or other securities, including, without limitation,
          the Series B Preferred Stock Purchase Agreement dated as of
          October 23, 1992 among the Company and the Purchasers listed
          in the Schedule of Purchasers thereto (the "Series B
          Agreement"), the Series C Preferred Stock and Warrant
          Purchase Agreement dated as of November 22, 1992 among the
          Company and the Purchasers listed in the Schedule of
          Purchasers thereto (the "Series C Agreement"), the Series D
          Preferred Stock Purchase Agreement dated as of June 29, 1994
          among the Company and the Purchasers listed in the Schedule
          of Purchasers thereto (the Series D Agreement") and the
          Series E Preferred Stock Purchase Agreement dated as of
          December 29, 1995 among the Company and the Purchasers
          listed in the Schedule of Purchasers thereto (the "Series E
          Agreement").

                                       12PAGE
<PAGE>
          2.2  CAPITALIZATION.  The authorized capital stock of the
          Company consists of (i) 20,000,000 shares of Company Common
          Stock, of which 6,774,688 shares are issued and outstanding
          and (ii) 4,000,000 shares of preferred stock ("Preferred
          Stock"), of which (a) 250,000 shares have been designated
          Series A Preferred Stock, of which no shares are issued and
          outstanding, (b) 940,602 shares have been designated Series
          B Stock, of which 273,935 shares are issued and outstanding,
          (c) 280,000 shares have been designated Series C Stock, of
          which all shares are issued and outstanding, (d) 1,400,000
          shares have been designated Series D Stock, of which
          1,237,016 shares are issued and outstanding, and (e) 382,653
          shares have been designated Series E Stock, of which 353,571
          shares are issued and outstanding.  The shares of Series B
          Stock, Series C Stock and Series D Stock issued and
          outstanding are convertible into an aggregate of 1,790,951
          shares of Company Common Stock, representing the conversion
          of each share of Series B Stock, Series C Stock and Series D
          Stock into 1.0 share of Company Common Stock.  The
          liquidation preferences (including any declared or
          accumulated but unpaid dividends through the date hereof)
          for the Series B Stock, Series C Stock, Series D Stock and
          the Series E Stock are $2.00, $1.25, $.1274 and $1.274,
          respectively, per share. Under the terms of the Series B
          Stock, Series C Stock, Series D Stock and Series E Stock,
          the Merger will be considered to be a liquidation of the
          Company. Section 2.2 of the Disclosure Schedule sets forth a
          complete and accurate list of (i) all shareholders of the
          Company, indicating the type and number of shares held by
          each shareholder, and (ii) all Optionholders and all holders
          of warrants to purchase Company Common Stock (the "Company
          Warrants") indicating the type and number of shares subject
          to each Company Option and Company Warrant and the exercise
          price, vesting status and termination date of each Company
          Option and Company Warrant. All of the issued and
          outstanding shares of Company Common Stock, Series B Stock,
          Series C Stock, Series D Stock and Series E Stock are, and
          all shares of Company Common Stock that may be issued upon
          exercise of Company Options and Company Warrants or upon
          conversion of Series B Stock, Series C Stock and Series D
          Stock will be, upon such exercise or conversion, duly
          authorized, validly issued, fully paid, nonassessable and
          free of all preemptive rights. Except as set forth in
          Section 2.2 of the Disclosure Schedule, there are no
          outstanding or authorized shares of capital stock or other
          securities or options, warrants, rights, agreements or
          commitments to which the Company is a party or which are
          binding upon the Company providing for the issuance,
          disposition or acquisition of any of its capital stock or
          other securities. There are no outstanding or authorized
          stock appreciation, phantom stock or similar rights with
          respect to the Company. There are no agreements, voting
          trusts, proxies, or understandings with respect to the
          voting or registration under the Securities Act of 1933 (the

                                       13PAGE
<PAGE>
          "Securities Act"), of any shares of any capital stock of the
          Company to which the Company is party.  To the Company's
          knowledge, no agreements, voting trusts, proxies, or
          understandings with respect to the voting or registration
          under the Securities Act, of any shares of any capital stock
          of the Company otherwise exist.  All of the issued and
          outstanding shares of Company Common Stock, Series B Stock,
          Series C Stock, Series D Stock and Series E Stock and other
          outstanding securities of the Company were issued in
          compliance with applicable federal and state securities
          laws.  No repurchase of capital stock by the Company (i)
          violated the Company's Amended and Restated Articles of
          Incorporation or Bylaws or any laws, rules or regulations
          applicable to the Company or (ii) caused any breach of any
          agreement to which the Company is or was a party.

          2.3  AUTHORIZATION OF TRANSACTION.  The Company has all
          requisite corporate power and authority to execute and
          deliver this Agreement and to perform its obligations
          hereunder. The execution and delivery of this Agreement and,
          subject to the adoption of this Agreement and the approval
          of the Merger by (a) the holders of a majority of the shares
          of Company Common Stock, (b) the holders of a majority of
          the shares of Company Common Stock and the Preferred Stock
          (calculated on an as converted basis) issued and outstanding
          and entitled to vote, voting together as a single class (c)
          the holders of a majority of the shares of each series of
          Preferred Stock issued and outstanding and entitled to vote,
          voting separately and (d) the holders of a majority of the
          shares of Preferred Stock issued and outstanding and
          entitled to vote, voting together as a single class
          (collectively, the "Requisite Shareholder Approval"), the
          performance by the Company of this Agreement and the
          consummation by the Company of the transactions contemplated
          hereby have been duly and validly authorized by all
          necessary corporate action on the part of the Company. This
          Agreement has been duly and validly executed and delivered
          by the Company and constitutes a valid and binding
          obligation of the Company, enforceable in accordance with
          its terms. The Board of Directors of the Company unanimously
          has, after due consideration of its fiduciary duties, (i)
          determined that this Agreement and the transactions
          contemplated hereby, including the Merger, are fair to the
          Company and the shareholders of the Company, (ii) approved
          this Agreement and the transactions contemplated hereby,
          including the Merger and (iii) resolved to recommend
          approval and adoption of this Agreement and the Merger by
          the shareholders of the Company.

          2.4  NONCONTRAVENTION.  Subject to compliance with the
          applicable requirements of the Hart-Scott-Rodino Antitrust
          Improvements Act of 1976, as amended (the "Hart-Scott-Rodino
          Act"), and the filing of the Merger Documents with the
          Secretary of State of the State of California and the

                                       14PAGE
<PAGE>
          Secretary of State of the State of Delaware, neither the
          execution and delivery of this Agreement by the Company, nor
          the consummation by the Company of the transactions
          contemplated hereby, will (a) require on the part of the
          Company or any corporation with respect to which the
          Company, directly or indirectly, has the power to vote or
          direct the voting of sufficient securities to elect a
          majority of the directors (any of the foregoing being
          referred to herein as a "Subsidiary") any filing with, or
          any permit, authorization, consent or approval of, any
          court, arbitration tribunal, administrative agency or
          commission or other governmental or regulatory authority or
          agency (a "Governmental Entity"), (b) conflict with or
          violate any provision of the charter or Bylaws of the
          Company or any Subsidiary, (c) conflict with, result in a
          breach of, constitute (with or without due notice or lapse
          of time or both) a default under, result in the acceleration
          of, create in any party the right to accelerate, terminate,
          modify or cancel, or require any notice, consent or waiver
          under, any material contract, lease, sublease, license,
          sublicense, franchise, permit, indenture, agreement or
          mortgage for borrowed money, instrument of indebtedness,
          Security Interest (as defined below) or other arrangement to
          which the Company or any Subsidiary is a party or by which
          the Company or any Subsidiary is bound or to which any of
          their assets is subject except as provided in Section 2.4 of
          the Disclosure Schedule, (d) result in the imposition of any
          Security Interest (as defined below) upon any assets of the
          Company or any Subsidiary or (e) violate any order, writ,
          injunction, decree, statute, rule or regulation applicable
          to the Company, any Subsidiary or any of their properties or
          assets or (f) entitle any employee of the Company or any
          Subsidiary to severance or other payments or to any increase
          in compensation or benefits. For purposes of this Agreement,
          "Security Interest" means any mortgage, pledge, security
          interest, encumbrance, charge, or other lien (whether
          arising by contract or by operation of law), other than (i)
          mechanic's, materialmen's, and similar liens, (ii) liens
          arising under worker's compensation, unemployment insurance,
          social security, retirement, and similar legislation, and
          (iii) liens on goods in transit incurred pursuant to
          documentary letters of credit, in each case arising in the
          ordinary course of business of the Company or any Subsidiary
          and not material to the Company and its Subsidiaries taken
          as a whole. Section 2.4 of the Disclosure Schedule sets
          forth a true, correct and complete list of all consents and
          approvals of non-governmental third parties that are
          required in connection with the consummation by the Company
          and the Subsidiaries of the transactions contemplated by
          this Agreement.  

          2.5  SUBSIDIARIES.  Section 2.5 of the Disclosure Schedule
          sets forth for each Subsidiary (a) its name and jurisdiction
          of incorporation, (b) the number of shares of authorized

                                       15PAGE
<PAGE>
          capital stock of each class of its capital stock, (c) the
          number of issued and outstanding shares of each class of its
          capital stock, the names of the holders thereof and the
          number of shares held by each such holder, (d) the number of
          shares of its capital stock held in treasury, and (e) its
          directors and officers. Each Subsidiary is a corporation
          duly organized, validly existing and in good standing under
          the laws of the jurisdiction of its incorporation or
          organization. Each Subsidiary is duly qualified to conduct
          business and is in corporate and tax good standing in each
          jurisdiction in which the failure to so qualify would have a
          Material Adverse Effect. Each Subsidiary has all requisite
          corporate power and authority to carry on the businesses in
          which it is engaged and to own and use the properties owned
          and used by it. The Company has delivered to the Buyer
          correct and complete copies of the charter and Bylaws of
          each Subsidiary, as amended to date. No Subsidiary is in
          default under or in violation of any provision of its
          charter or Bylaws. All of the issued and outstanding shares
          of capital stock of each Subsidiary are duly authorized,
          validly issued, fully paid, nonassessable and free of
          preemptive rights. All shares of each Subsidiary that are
          held of record or owned beneficially by either the Company
          or any Subsidiary are held or owned free and clear of any
          restrictions on transfer (other than restrictions under the
          Securities Act and state securities laws), claims, Security
          Interests, options, warrants, rights, contracts, calls,
          commitments, equities and demands. There are no outstanding
          or authorized options, warrants, rights, agreements or
          commitments (contingent or otherwise) to which the Company
          or any Subsidiary is a party or which are binding on any of
          them providing for the issuance, disposition or acquisition
          of any capital stock of any Subsidiary. There are no
          outstanding stock appreciation, phantom stock or similar
          rights with respect to any Subsidiary. There are no voting
          trusts, proxies, or other agreements or understandings with
          respect to the voting of any capital stock of any
          Subsidiary. The Company does not control directly or
          indirectly or have any direct or indirect equity
          participation in any corporation, partnership, trust, or
          other business association which is not a Subsidiary.

          2.6  REPORTS AND FINANCIAL STATEMENTS.  The Company has
          provided to the Buyer (i) the audited consolidated balance
          sheets and statements of operations, changes in
          shareholders' equity and cash flows for each of the last
          three fiscal years for the Company and the Subsidiaries (or
          such shorter periods as such Subsidiaries have been in
          existence); and (ii) the unaudited consolidated balance
          sheet and statements of income as of and for the quarter
          ended as of December 31, 1996 (the "Most Recent Fiscal
          Quarter End"). Such financial statements (collectively, the
          "Financial Statements") have been prepared in accordance
          with United States generally accepted accounting principles

                                       16PAGE
<PAGE>
          applied on a consistent basis throughout the periods covered
          thereby  ("GAAP"), fairly present the consolidated financial
          condition, results of operations and cash flows of the
          Company and the Subsidiaries as of the respective dates
          thereof and for the periods referred to therein and are
          consistent with the books and records of the Company and the
          Subsidiaries, provided, however, that the Financial
          Statements referred to in clause (ii) above are subject to
          normal recurring year-end adjustments (which will not be
          material) and do not include footnotes or statements of cash
          flows and changes in shareholders' equity.

          2.7  ABSENCE OF CERTAIN CHANGES.  Since the Most Recent
          Fiscal Quarter End, (a) there has not been any material
          adverse change in the assets, business, prospects, financial
          condition or results of operations of the Company or its
          Subsidiaries, nor has there occurred any event or
          development which could reasonably be foreseen to result in
          such a material adverse change in the future, and (b)
          neither the Company nor any Subsidiary has taken any of the
          actions set forth in paragraphs (a) through (o) of Section
          4.5.

          2.8  UNDISCLOSED LIABILITIES.  Neither the Company nor any
          of its Subsidiaries has any liability, whether absolute or
          contingent, liquidated or unliquidated, accrued or unaccrued
          and whether due or to become due, except for (a) liabilities
          shown on the balance sheet referred to in clause (ii) of
          Section 2.6 (the "Most Recent Balance Sheet"), (b)
          liabilities which have arisen since the Most Recent Fiscal
          Quarter End in the ordinary course of business and which are
          similar in nature and amount to the liabilities which arose
          during the comparable period of time in the immediately
          preceding fiscal year and (c) contractual liabilities
          incurred in the ordinary course of business which are not
          required by GAAP to be reflected on a balance sheet.

          2.9  TAX MATTERS.

          (a) Each of the Company and the Subsidiaries has filed in a
          timely manner (including permitted extensions) all Tax
          Returns (as defined below) that it was required to file and
          all such Tax Returns were correct and complete in all
          material respects. All Taxes shown on such Tax Returns have
          been paid in full on a timely basis or have been accrued on
          the Most Recent Balance Sheet, and no other Taxes are owed
          by the Company with respect to items or periods covered by
          such Returns. The unpaid Taxes of the Company and the
          Subsidiaries for Tax periods through the date of the Most
          Recent Balance Sheet do not exceed the accruals and reserves
          for Taxes set forth on the Most Recent Balance Sheet.
          Neither the Company nor any Subsidiary has any actual or
          potential liability for any Tax obligation of any taxpayer
          (including without limitation any affiliated group of

                                       17PAGE
<PAGE>
          corporations or other entities that included the Company or
          any Subsidiary during a prior period) other than the Company
          and the Subsidiaries. All Taxes that the Company or any
          Subsidiary is or was required by law to withhold or collect
          have been duly withheld or collected and, to the extent
          required, have been paid to the proper Governmental Entity.
          There are no liens for Taxes on the assets of the Company or
          any Subsidiary other than liens for Taxes not yet due and
          payable.  For purposes of this Agreement, "Taxes" means all
          taxes, charges, fees, levies or other similar assessments or
          liabilities, including without limitation income, gross
          receipts, ad valorem, premium, value-added, excise, real
          property, personal property, sales, use, transfer,
          withholding, employment, payroll and franchise taxes imposed
          by the United States of America or any state, local or
          foreign government, or any agency thereof, or other
          political subdivision of the United States or any such
          government, and any interest, fines, penalties, assessments
          or additions to tax resulting from, attributable to or
          incurred in connection with any tax or any contest or
          dispute thereof. For purposes of this Agreement, "Tax
          Returns" means all reports, returns, declarations,
          statements or other information required to be supplied to a
          taxing authority in connection with Taxes.

          (b) The Company has delivered to the Buyer correct and
          complete copies of all federal income Tax Returns,
          examination reports and statements of deficiencies assessed
          against or agreed to by any of the Company or any Subsidiary
          since December 31, 1992. The federal income Tax Returns of
          the Company have never been audited by the Internal Revenue
          Service.  No examination or audit of any Tax Returns of the
          Company or any Subsidiary by any Governmental Entity is
          currently in progress or, to the knowledge of the Company
          and the Subsidiaries, threatened or contemplated. Neither
          the Company nor any Subsidiary has waived any statute of
          limitations with respect to Taxes or agreed to an extension
          of time with respect to a Tax assessment or deficiency,
          which waiver or extension is still in effect.  There is no
          dispute or claim concerning any Tax liability of any of the
          Company and its Subsidiaries, either raised or claimed in
          writing by any authority or as to which the Company, its
          Subsidiaries or their directors, officers or employees have
          knowledge based upon personal contact with any agent of any
          such authority.  No claim has ever been made by an authority
          in a jurisdiction where any of the Company and its
          Subsidiaries does not file Tax Returns that it is or may be
          subject to Tax in that jurisdiction.

          (c) Neither the Company nor any Subsidiary is a "consenting
          corporation" within the meaning of Section 341(f) of the
          Internal Revenue Code of 1986 (the "Code") and none of the
          assets of the Company nor the Subsidiaries are subject to an
          election under Section 341(f) of the Code.  None of the

                                       18PAGE
<PAGE>
          Company and its Subsidiaries has made any payments or is a
          party to any agreement that under certain circumstances
          could obligate it to make any payments that will not be
          deductible under Section 280G of the Code.  Neither the
          Company nor any Subsidiary has been a United States real
          property holding corporation within the meaning of Section
          897(c)(2) of the Code during the applicable period specified
          in Section 897(c)(l)(A)(ii) of the Code. Neither the Company
          nor any Subsidiary is a party to any Tax allocation or
          sharing agreement.  

          (d) Neither the Company nor any Subsidiary is or has ever
          been a member of an "affiliated group" of corporations
          (within the meaning of Section 1504 of the Code), other than
          a group of which only the Company and the Subsidiaries are
          members. Neither the Company nor any Subsidiary has made an
          election under Treasury Reg. Section 1.1502-20(g). Neither
          the Company nor any Subsidiary is or has been required to
          make a basis reduction pursuant to Treasury Reg. Section
          1.1502-20(b) or Treasury Reg. Section 1.337(d)-2T(b).

          (e) All material elections with respect to Taxes, other than
          those elections reflected in the Tax Returns referred to in
          subsection (b), as of the date hereof are set forth in
          Section 2.9 of the Disclosure Schedule. None of the assets
          of the Company nor any Subsidiary is property that the
          Company or any Subsidiary is required to treat as being
          owned by any other person pursuant to the "safe harbor
          lease" provisions of former Section 168(f)(8) of the Code.
          None of the assets of the Company nor any Subsidiary
          directly or indirectly secures any debt the interest on
          which is tax exempt under Section 103(a) of the Code. None
          of the assets of the Company nor any Subsidiary is "tax
          exempt use property" within the meaning of Section 168(h) of
          the Code. Neither the Company nor any Subsidiary has agreed
          to make or is required to make any adjustment under Section
          481 of the Code by reason of a change in accounting method
          or otherwise. Neither the Company nor any Subsidiary has
          participated in an international boycott within the meaning
          of Section 999 of the Code. Except as set forth in Section
          2.5(e) of the Disclosure Schedule, neither the Company nor
          any Subsidiary has or has had a permanent establishment in
          any foreign country, as defined in any applicable treaty or
          convention between the United States and such foreign
          country.  Neither the Company nor any Subsidiary is a party
          to any joint venture, partnership or other arrangement or
          contract that could be treated as a partnership for federal
          income tax purposes.  

          2.10  ASSETS.  Each of the Company and the Subsidiaries owns
          or leases all tangible assets necessary for the conduct of
          its businesses as presently conducted and as presently
          proposed to be conducted. Each such tangible asset is free
          from material defects, has been maintained in accordance

                                       19PAGE
<PAGE>
          with normal industry practice, is in good operating
          condition and repair (subject to normal wear and tear) and
          is suitable for the purposes for which it presently is used.
          Except as described in Section 2.10 of the Disclosure
          Schedule, no asset of the Company (tangible or intangible)
          is subject to any Security Interest.

          2.11  OWNED REAL PROPERTY.  Neither the Company nor any
          Subsidiary owns any real property.

          2.12  INTELLECTUAL PROPERTY.

          (a) Each of the Company and the Subsidiaries owns, or is
          licensed or otherwise possesses legally enforceable rights
          to use, all Intellectual Property (as defined below) that is
          used to conduct its business as currently conducted or
          planned to be conducted. For purposes of this Agreement, the
          term "Intellectual Property" means all (i) patents, patent
          applications, patent disclosures and all related
          continuation, continuation-in-part, divisional, reissue,
          reexamination, utility, model, certificate of invention and
          design patents, patent applications, registrations and
          applications for registrations, (ii) trademarks, service
          marks, trade dress, logos, trade names and corporate names
          and registrations and applications for registration thereof,
          (iii) copyrights and registrations and applications for
          registration thereof, (iv) mask works and registrations and
          applications for registration thereof, (v) computer software
          (other than software that is generally commercially
          available), data and documentation, (vi) trade secrets and
          confidential business information, whether patentable or
          unpatentable and whether or not reduced to practice,
          know-how, manufacturing and production processes and
          techniques, research and development information,
          copyrightable works, financial, marketing and business data,
          pricing and cost information, business and marketing plans
          and customer and supplier lists and information, (vii) other
          proprietary rights relating to any of the foregoing and
          (viii) copies and tangible embodiments thereof. Section 2.12
          of the Disclosure Schedule lists (i) all patents and patent
          applications, all trademarks, all registered copyrights, and
          all trade names and service marks which are used in the
          business of the Company or the Subsidiaries, including the
          jurisdictions in which each such Intellectual Property right
          has been issued or registered or in which any such
          application for such issuance or registration has been
          filed, (ii) all material written licenses, sublicenses and
          other agreements to which the Company or a Subsidiary is a
          party and pursuant to which any person is authorized to use
          any Intellectual Property rights, and (iii) all material
          written licenses, sublicenses and other agreements as to
          which the Company or a Subsidiary is a party and pursuant to
          which the Company or a Subsidiary is authorized to use any
          third party Intellectual Property ("Third Party Intellectual

                                       20PAGE
<PAGE>
          Property Rights") which is used in the business of the
          Company or any Subsidiary or which form a part of any
          product or service of the Company or any Subsidiary. The
          Company has made available to the Buyer correct and complete
          copies of all such patents, registrations, applications,
          licenses and agreements (as amended to date) and related
          documentation. Except pursuant to the Contracts listed on
          Section 2.14 of the Disclosure Schedule and except pursuant
          to the licenses listed on Section 2.12 of the Disclosure
          Schedule, neither the Company nor any Subsidiary has agreed
          to indemnify any person or entity for or against any
          infringement, misappropriation or other conflict with
          respect to any item of Intellectual Property that the
          Company or any Subsidiary owns or uses. Neither the Company
          nor any Subsidiary is a party to any oral license,
          sublicense or agreement which, if reduced to written form,
          would be required to be listed in Section 2.12 of the
          Disclosure Schedule under the terms of this Section 2.12(a).

          (b) Neither the Company nor any of the Subsidiaries is, nor
          will any of them be as a result of the execution and
          delivery of this Agreement or the performance of the
          Company's obligations under this Agreement, in breach of any
          license, sublicense or other agreement relating to the
          Intellectual Property or Third Party Intellectual Property
          Rights.

          (c) Neither the Company nor any of the Subsidiaries has been
          named in any suit, action or proceeding which involves a
          claim of infringement of any Intellectual Property right of
          any third party.  Except as set forth on Section 12.2(c) of
          the Disclosure Schedule, no person or entity has alleged,
          either orally or in writing, that the manufacturing,
          marketing, licensing or sale of the products or performance
          of the service offerings of the Company and the Subsidiaries
          infringes any Intellectual Property right of any third
          party.  Except as set forth on Section 12.2(c) of the
          Disclosure Schedules, to the knowledge of the Company and
          the Subsidiaries, the Intellectual Property rights of the
          Company and the Subsidiaries are not being infringed by
          activities, products or services of any third party.

          2.13  REAL PROPERTY LEASES.  Section 2.13 of the Disclosure
          Schedule lists and describes briefly all real property
          leased or subleased to the Company or any Subsidiary and
          lists the term of such lease or sublease, any extension and
          expansion options, and the rent payable thereunder. The
          Company has delivered to the Buyer correct and complete
          copies of the leases and subleases (as amended to date)
          listed in Section 2.13 of the Disclosure Schedule. With
          respect to each lease and sublease listed in Section 2.13 of
          the Disclosure Schedule:
                                       21PAGE
<PAGE>
          (a) the lease or sublease is legal, valid, binding,
          enforceable and in full force and effect;

          (b) the lease or sublease will continue to be legal, valid,
          binding, enforceable and in full force and effect
          immediately following the Closing in accordance with the
          terms thereof as in effect prior to the Closing;

          (c) neither the Company or any Subsidiary nor, to the best
          knowledge of the Company, any other party to the lease or
          sublease is in breach or default in any material respect,
          and no event has occurred which, with notice or lapse of
          time, would constitute any such breach or default, or permit
          termination, modification, or acceleration thereunder;

          (d) there are no disputes, oral agreements or forbearance
          programs in effect as to the lease or sublease;

          (e) neither the Company nor any Subsidiary has assigned,
          transferred, conveyed, mortgaged, deeded in trust or
          encumbered any interest in the leasehold or subleasehold;

          (f) all facilities leased or subleased thereunder are
          supplied with utilities and other services necessary for the
          operation of said facilities; 

          (g)  to the knowledge of the Company, the owner of the
          facility leased or subleased has good and clear record and
          marketable title to the parcel of real property, free and
          clear of any Security Interest, easement, covenant or other
          restriction, except for recorded easements, covenants, and
          other restrictions which do not impair the intended use,
          occupancy or value of the property subject thereto; and

          (h) the Company and the Subsidiaries have obtained
          non-disturbance agreements from the holder of each superior
          Security Interest and ground lease in connection with each
          such lease or sublease (each of which is listed in Section
          2.13 of the Disclosure Schedule); and the representations
          and warranties set forth in clauses (a) through (d) of this
          Section 2.13 with respect to leases and subleases are true
          and correct with respect to such non-disturbance agreements.

          2.14  CONTRACTS.  Section 2.14 of the Disclosure Schedule
          lists the following written arrangements to which the
          Company or any Subsidiary is a party:

          (a) any written arrangement pursuant to which any party is
          indemnified for or against any liability under Environmental
          Laws (as defined in Section 2.21 below);

          (b) any written arrangement (or group of related written
          arrangements) for the lease of personal property from or to


                                       22PAGE
<PAGE>
          third parties providing for lease payments in excess of
          $50,000 per annum;

          (c) any written arrangement (or group of related written
          arrangements) for the purchase or sale of raw materials,
          commodities, supplies, products or other personal property
          or for the furnishing or receipt of services (i) which calls
          for performance over a period of more than one year, (ii)
          which involves more than the sum of $50,000, or (iii) in
          which the Company or any Subsidiary has granted
          manufacturing rights, "most favored nation" pricing
          provisions or marketing or distribution rights relating to
          any products or territory or has agreed to purchase a
          minimum quantity of goods or services or has agreed to
          purchase goods or services exclusively from a certain party;

          (d) any written arrangement establishing a partnership or
          joint venture;

          (e) any written arrangement (or group of related written
          arrangements) under which it has created, incurred, assumed,
          or guaranteed (or may create, incur, assume, or guarantee)
          indebtedness (including capitalized lease obligations)
          involving more than $50,000 or under which it has imposed
          (or may impose) a Security Interest on any of its assets,
          tangible or intangible;

          (f) any written arrangement concerning confidentiality
          (other than those entered into the ordinary course of
          business) or noncompetition;

          (g) any written arrangement involving any shareholder of the
          Company or their affiliates, as defined in Rule 12b-2 under
          the Securities Exchange Act of 1934 (as amended, the
          "Exchange Act") ("Affiliates");

          (h)  any written arrangement for the purchase or sale of
          assets or businesses, or for the purchase or sale of
          securities;

          (i) any written arrangement under which the consequences of
          a default or termination could have a material adverse
          effect on the assets, business, financial condition, results
          of operations or future prospects of the Company and the
          Subsidiaries, taken as a whole (a "Material Adverse
          Effect"); and

          (j) any other written arrangement (or group of related
          written arrangements) either involving more than $50,000 or
          not entered into in the ordinary course of business.

               The Company has delivered to the Buyer a correct and
          complete copy of each written arrangement (as amended to
          date) listed in Section 2.14 of the Disclosure Schedule.

                                       23PAGE
<PAGE>
          With respect to each written arrangement so listed: (i) the
          written arrangement is legal, valid, binding and enforceable
          and in full force and effect; (ii) the written arrangement
          will continue to be legal, valid, binding and enforceable
          and in full force and effect immediately following the
          Closing in accordance with the terms thereof as in effect
          prior to the Closing; and (iii) no party is in material
          breach or default, and no event has occurred which with
          notice or lapse of time would constitute a material breach
          or default or permit termination, modification, or
          acceleration, under the written arrangement. Neither the
          Company nor any Subsidiary is a party to any oral contract,
          agreement or other arrangement which, if reduced to written
          form, would be required to be listed in Section 2.14 of the
          Disclosure Schedule under the terms of this Section 2.14.

          2.15  ACCOUNTS RECEIVABLE.  All accounts receivable of the
          Company and the Subsidiaries reflected on the Most Recent
          Balance Sheet (except for those that have been collected
          since the Most Recent Fiscal Quarter End) are valid
          receivables subject to no setoffs or counterclaims and are
          current and collectible (within 90 days after the date on
          which it first became due and payable) net of the applicable
          reserve for bad debts on the Most Recent Balance Sheet. All
          accounts receivable reflected in the financial or accounting
          records of the Company that have arisen since the Most
          Recent Fiscal Quarter End (except for those that have been
          collected since the Most Recent Fiscal Quarter End) are
          valid receivables subject to no setoffs or counterclaims and
          are collectible (within 90 days after the date on which it
          first became due and payable), net of a reserve for bad
          debts in an amount proportionate to the reserve shown on the
          Most Recent Balance Sheet.

          2.16  POWERS OF ATTORNEY.  Except as set forth in Section
          2.16 of the Disclosure Schedules, there are no outstanding
          powers of attorney executed on behalf of the Company or any
          Subsidiary.

          2.17  INSURANCE.  Section 2.17 of the Disclosure Schedule
          sets forth the following information with respect to each
          insurance policy (including fire, theft, casualty, general
          liability, workers compensation, business interruption,
          environmental, product liability and automobile insurance
          policies and bond and surety arrangements) to which the
          Company or any Subsidiary has been a party, a named insured,
          or otherwise the beneficiary of coverage at any time within
          the past five years:

          (a) the name of the insurer, the name of the policyholder
          and the name of each covered insured;

          (b) the policy number and the period of coverage;


                                       24PAGE
<PAGE>
          (c) the scope (including an indication of whether the
          coverage was on a claims made, occurrence, or other basis)
          and amount (including a description of how deductibles and
          ceilings are calculated and operate) of coverage; and

          (d) a description of any retroactive premium adjustments or
          other loss-sharing arrangements.

          Each such insurance policy (i) is enforceable and in full
          force and effect; and (ii) will continue to be enforceable
          and in full force and effect immediately following the
          Closing in accordance with the terms thereof as in effect
          prior to the Closing. Neither the Company nor any Subsidiary
          (A) is in breach or default (including with respect to the
          payment of premiums or the giving of notices) under such
          policy, and no event has occurred which, with notice or the
          lapse of time, would constitute such a breach or default or
          permit termination, modification or acceleration, under such
          policy; (B) has received any notice from the insurer
          disclaiming coverage or reserving rights with respect to a
          particular claim or such policy in general; or (C) has
          incurred any loss, damage, expense or liability covered by
          any such insurance policy for which it has not properly
          asserted a claim under such policy. Each of the Company and
          the Subsidiaries is covered by insurance in scope and amount
          customary and reasonable for the businesses in which it is
          engaged.

          2.18  LITIGATION.  Section 2.18 of the Disclosure Schedule
          identifies, and contains a brief description of, (a) any
          unsatisfied judgment, or any order, decree, stipulation or
          injunction to which the Company or any Subsidiary is subject
          and (b) any claim, complaint, action, suit, proceeding,
          hearing or investigation by or before any Governmental
          Entity or before any arbitrator to which the Company or any
          Subsidiary is a party or, to the knowledge of the Company
          and the Subsidiaries, is threatened to be made a party or
          which would otherwise have a Material Adverse Effect.  

          2.19  EMPLOYEES.  Section 2.19 of the Disclosure Schedule
          contains a list of all employees of the Company and each
          Subsidiary, indicating, with respect to each such employee,
          his or her position, annual rate of compensation, bonus for
          the last fiscal year of the Company, method for calculating
          bonus for the current fiscal year and any other arrangement
          under which cash compensation is payable by the Company.
          Each such employee has entered into a
          confidentiality/assignment of inventions agreement with the
          Company or a Subsidiary, a copy of which has previously been
          delivered to the Buyer. To the knowledge of the Company and
          its Subsidiaries, no employee has any plans to terminate
          employment with the Company or any Subsidiary. Neither the
          Company nor any Subsidiary is a party to or bound by any
          collective bargaining agreement, nor has any of them

                                       25PAGE
<PAGE>
          experienced any strikes, grievances, claims of unfair labor
          practices or other collective bargaining disputes. The
          Company and the Subsidiaries have no knowledge of any
          organizational effort made or threatened, either currently
          or within the past five years, by or on behalf of any labor
          union with respect to employees of the Company or any
          Subsidiary. 

          2.20  EMPLOYEE BENEFITS.

          (a) Section 2.20(a) of the Disclosure Schedule contains a
          complete and accurate list of all Employee Benefit Plans (as
          defined below) maintained, or contributed to, by the
          Company, any Subsidiary, or any ERISA Affiliate (as defined
          below). For purposes of this Agreement, "Employee Benefit
          Plan" means any "employee pension benefit plan" (as defined
          in Section 3(2) of the Employee Retirement Income Security
          Act of 1974, as amended ("ERISA")), any "employee welfare
          benefit plan" (as defined in Section 3(1) of ERISA), and any
          other written or oral plan, agreement or arrangement
          involving direct or indirect compensation, including without
          limitation insurance coverage, severance benefits,
          disability benefits, deferred compensation, bonuses, stock
          options, stock purchase, phantom stock, stock appreciation
          or other forms of incentive compensation or post-retirement
          compensation. For purposes of this Agreement, "ERISA
          Affiliate" means any entity which is a member of (i) a
          controlled group of corporations (as defined in Section
          414(b) of the Code), (ii) a group of trades or businesses
          under common control (as defined in Section 414(c) of the
          Code), or (iii) an affiliated service group (as defined
          under Section 414(m) of the Code or the regulations under
          Section 414(o) of the Code), any of which includes the
          Company or a Subsidiary. Complete and accurate copies of (i)
          all Employee Benefit Plans which have been reduced to
          writing, (ii) written summaries of all unwritten Employee
          Benefit Plans, (iii) all related trust agreements, insurance
          contracts and summary plan descriptions, and (iv) all annual
          reports filed on IRS Form 5500, 5500C or 5500R for the last
          five plan years for each Employee Benefit Plan, have been
          delivered to the Buyer. Each Employee Benefit Plan has been
          administered in all material respects in accordance with its
          terms and each of the Company, the Subsidiaries and the
          ERISA Affiliates has in all material respects met its
          obligations with respect to such Employee Benefit Plan and
          has made all required contributions thereto. The Company and
          all Employee Benefit Plans are in compliance in all material
          respects with the currently applicable provisions of ERISA
          and the Code and the regulations thereunder.

          (b) There are no investigations by any Governmental Entity,
          termination proceedings or other claims (except claims for
          benefits payable in the normal operation of the Employee
          Benefit Plans and proceedings with respect to qualified

                                       26PAGE
<PAGE>
          domestic relations orders), suits or proceedings against or
          involving any Employee Benefit Plan or asserting any rights
          or claims to benefits under any Employee Benefit Plan that
          could give rise to any material liability.

          (c) All the Employee Benefit Plans that are intended to be
          qualified under Section 401(a) of the Code have received
          determination letters from the Internal Revenue Service to
          the effect that such Employee Benefit Plans are qualified
          and the plans and the trusts related thereto are exempt from
          federal income taxes under Sections 401(a) and 501(a),
          respectively, of the Code, no such determination letter has
          been revoked and revocation has not been threatened, and no
          such Employee Benefit Plan has been amended since the date
          of its most recent determination letter or application
          therefor in any respect, and no act or omission has
          occurred, that would adversely affect its qualification or
          materially increase its cost.

          (d) Neither the Company, any Subsidiary, nor any ERISA
          Affiliate has ever maintained an Employee Benefit Plan
          subject to Section 412 of the Code or Title IV of ERISA.

          (e) At no time has the Company, any Subsidiary or any ERISA
          Affiliate been obligated to contribute to any
          "multi-employer plan" (as defined in Section 4001(a)(3) of
          ERISA).

          (f) There are no unfunded obligations under any Employee
          Benefit Plan providing benefits after termination of
          employment to any employee of the Company or any Subsidiary
          (or to any beneficiary of any such employee), including but
          not limited to retiree health coverage and deferred
          compensation, but excluding continuation of health coverage
          required to be continued under Section 4980B of the Code and
          insurance conversion privileges under state law.

          (g) No act or omission has occurred and no condition exists
          with respect to any Employee Benefit Plan maintained by the
          Company, any Subsidiary or any ERISA Affiliate that would
          subject the Company, any Subsidiary or any ERISA Affiliate
          to any material fine, penalty, tax or liability of any kind
          imposed under ERISA or the Code.

          (h) No Employee Benefit Plan is funded by, associated with,
          or related to a "voluntary employee's beneficiary
          association" within the meaning of Section 501(c)(9) of the
          Code.

          (i) No Employee Benefit Plan, plan documentation or
          agreement, summary plan description or other written
          communication distributed generally to employees by its
          terms prohibits the Company from amending or terminating any
          such Employee Benefit Plan except as required by law.

                                       27PAGE
<PAGE>
          (j) Section 2.20(j) of the Disclosure Schedule discloses
          each: (i) agreement with any director, executive officer or
          other key employee of the Company or any Subsidiary (A) the
          benefits of which are contingent, or the terms of which are
          materially altered, upon the occurrence of a transaction
          involving the Company or any Subsidiary of the nature of any
          of the transactions contemplated by this Agreement, (B)
          providing any term of employment or compensation guarantee
          or (C) providing severance benefits or other benefits after
          the termination of employment of such director, executive
          officer or key employee; (ii) agreement, plan or arrangement
          under which any person may receive payments from the Company
          or any Subsidiary that may be subject to the tax imposed by
          Section 4999 of the Code or included in the determination of
          such person's "parachute payment" under Section 280G of the
          Code; and (iii) agreement or plan binding the Company or any
          Subsidiary, including without limitation any stock option
          plan, stock appreciation right plan, restricted stock plan,
          stock purchase plan, severance benefit plan, or any Employee
          Benefit Plan, any of the benefits of which will be
          increased, or the vesting of the benefits of which will be
          accelerated, by the occurrence of any of the transactions
          contemplated by this Agreement or the value of any of the
          benefits of which will be calculated on the basis of any of
          the transactions contemplated by this Agreement.

          2.21  ENVIRONMENTAL MATTERS.

          (a) Each of the Company and the Subsidiaries has complied
          with all Environmental Laws (as defined below) applicable to
          their business operations. For purposes of this Agreement,
          "Environmental Law" means any federal, state or local law,
          statute, rule or regulation or the common law relating to
          the environment or occupational health and safety, including
          without limitation any statute, regulation or order
          pertaining to (i) treatment, storage, disposal, generation
          and transportation of Materials of Environmental Concern (as
          defined below); (ii) air, water and noise pollution; (iii)
          groundwater and soil contamination; (iv) the release or
          threatened release into the environment of Materials of
          Environmental Concern, including without limitation
          emissions, discharges, injections, spills, escapes or
          dumping of pollutants, contaminants or chemicals; (v) the
          protection of wild life, marine sanctuaries and wetlands,
          including without limitation all endangered and threatened
          species; (vi) storage tanks, vessels and containers; (vii)
          underground and other storage tanks or vessels, abandoned,
          disposed or discarded barrels, containers and other closed
          receptacles; (viii) health and safety of employees and other
          persons; and (ix) manufacture, processing, use,
          distribution, treatment, storage, disposal, transportation
          or handling of Materials of Environmental Concern. As used
          above, the terms "release" and "environment" shall have the

                                       28PAGE
<PAGE>
          meaning set forth in the federal Comprehensive Environmental
          Compensation, Liability and Response Act of 1980, as amended
          ("CERCLA").

          (b) There have been no releases of any Materials of
          Environmental Concern into the environment, at any parcel of
          real property or any facility formerly or currently owned or
          leased by the Company or a Subsidiary. There has been no
          release of Materials of Environmental Concern for which
          liability can be imposed on the Company or the Subsidiary
          under any Environmental Law. For purposes of this Agreement,
          "Materials of Environmental Concern" means any chemicals,
          pollutants or contaminants, hazardous substances (as such
          term is defined under CERCLA), solid wastes and hazardous
          wastes (as such terms are defined under the federal Resource
          Conservation and Recovery Act), toxic materials, industrial
          materials, oil or petroleum and petroleum products, or any
          other material subject to regulation under any Environmental
          Law.

          (c) There is no pending or, to the knowledge of the Company
          and the Subsidiaries, threatened civil or criminal
          litigation, written notice of violation or noncompliance,
          formal administrative or judicial proceeding, claim, cause
          of action, liability, investigation, citation, order,
          consent order, consent decree, inquiry or information
          request by any Governmental Entity, involving the Company or
          any Subsidiary relating to any of the following: (i)
          violation of any Environmental Law; (ii) violation of any
          permit, license or registration issued under any
          Environmental Law; (iii) the disposal, discharge or release
          of Materials of Environmental Concern, whether or not in
          compliance with Environmental Laws; (iv) the generation,
          storage, treatment, transportation, reclamation, recycling
          or other handling of Materials of Environmental Concern,
          whether or not in compliance with Environmental Laws; (v)
          the ownership, operation or use of any landfill, surface
          impoundment, pit, pond, lagoon, underground injection well,
          waste pile, land treatment unit, wastewater treatment plant,
          air pollution control equipment, or any other unit used for
          the storage, disposal, handling or treatment of Materials of
          Environmental Concern; (vi) the exacerbation of previously
          existing environmental contamination; or (vii) exposure to
          any Materials of Environmental Concern, noises, odors, or
          vibrations at or from any real property or facility formerly
          or currently owned or leased by the Company or a Subsidiary.
          Without limiting the foregoing, none of the Company nor any
          Subsidiary has been named a "potentially responsible party"
          under any Environmental Law or has received any
          correspondence or notice that it may be named a "potentially
          responsible party."

          (d) The Company and the Subsidiaries possess all permits,
          licenses and/or registrations required under Environmental

                                       29PAGE
<PAGE>
          Laws for their business operations, and all such permits,
          licenses and/or registrations are valid and in full force
          and effect.  

          (e) Set forth in Section 2.21(e) of the Disclosure Schedule
          is a list of all environmental, health and safety reports,
          investigations, audits, assessments, surveys and analyses,
          relating to premises currently or previously owned or
          occupied by the Company or a Subsidiary which the Company
          has possession of or access to. Complete and accurate copies
          of each such report, or the results of each such
          investigation have been provided to the Buyer.

          (f) To the knowledge of the Company and its Subsidiaries,
          all entities, including without limitation transporters,
          treatment, storage and disposal facilities, and remediation
          companies, used by the Company or a Subsidiary, for the
          transportation, storage, disposal, treatment or other
          handling of Materials of Environmental Concern possess all
          permits, licenses and registrations required under
          Environmental Laws. None of the Company or any of its
          Subsidiaries have or will have any liability as a result of
          any act or omission by any of such entities. To the
          knowledge of the Company, there is no previous, pending or
          threatened civil or criminal litigation, written notice of
          violation or noncompliance, formal administrative or
          judicial proceeding, investigation, citation, order, consent
          order, consent decree, inquiry or information request by any
          Governmental Entity, relating to such entities for any
          violations of Environmental Laws.

          2.22  LEGAL COMPLIANCE.  Each of the Company and the
          Subsidiaries, and the conduct and operation of their
          respective businesses, are in compliance in all material
          respects with all laws (including rules and regulations
          thereunder) of any federal, state or local government or
          foreign government of a country in which the Company or any
          of its Subsidiaries does business, or any Governmental
          Entity, which are applicable to the Company or such
          Subsidiary, and none of the Company or any Subsidiaries has
          received any notice from any Governmental Entity that it is
          in violation of, or has violated any such laws (including
          rules and regulations thereunder).

          2.23  PERMITS.  Section 2.23 of the Disclosure Schedule sets
          forth a list of all material permits, licenses,
          registrations, certificates, orders or approvals from any
          Governmental Entity (including without limitation those
          issued or required under Environmental Laws and those
          relating to the occupancy or use of owned or leased real
          property) ("Permits") issued to or held by the Company or
          any Subsidiary. Such listed Permits are the only Permits
          that are required for the Company and the Subsidiaries to
          conduct their respective businesses as presently conducted

                                       30PAGE
<PAGE>
          or as proposed to be conducted, except for those the absence
          of which would not have any Material Adverse Effect. Each
          such Permit is in full force and effect and, to the best of
          the knowledge of the Company or any Subsidiary, no
          suspension or cancellation of such Permit is threatened and,
          to the best knowledge of the Company or any Subsidiary,
          there is no basis for believing that such Permit will not be
          renewable upon expiration. Each such Permit will continue in
          full force and effect following the Closing.

          2.24  CERTAIN BUSINESS RELATIONSHIPS WITH AFFILIATES.  No
          Affiliate of the Company or of any Subsidiary (a) owns any
          property or right, tangible or intangible, which is used in
          the business of the Company or any Subsidiary, (b) has any
          claim or cause of action against the Company or any
          Subsidiary, or (c) owes any money to, or is owed by money
          by, the Company or any Subsidiary. Section 2.24 of the
          Disclosure Schedule describes any transactions or
          relationships between the Company and any Affiliate thereof
          which are reflected in the statements of operations of the
          Company included in the Financial Statements.

          2.25  BROKERS' FEES.  Neither the Company nor any Subsidiary
          has any liability or obligation to pay any fees or
          commissions to any broker, finder or agent with respect to
          the transactions contemplated by this Agreement except that
          the Company is obligated to pay Needham & Company, Inc. and
          John Schwabacher the fees described in Section 2.25 of the
          Disclosure Schedule. Except for such fees, the Company shall
          have no liability to Needham & Company, Inc. nor to John
          Schwabacher under the Engagement Letters or otherwise
          arising out of the transactions contemplated hereby or
          thereby.

          2.26  BOOKS AND RECORDS.  The minute books and other similar
          records of the Company and each Subsidiary contain true and
          complete records of all actions taken at any meetings of the
          Company's or such Subsidiary's shareholders, Board of
          Directors or any committee thereof and of all written
          consents executed in lieu of the holding of any such
          meeting. The books and records of the Company and each
          Subsidiary accurately reflect in all material respects the
          assets, liabilities, business, financial condition and
          results of operations of the Company or such Subsidiary and
          have been maintained in accordance with good business and
          bookkeeping practices.

          2.27  CUSTOMERS AND SUPPLIERS.  No material purchase order
          or commitment of the Company or any Subsidiary is in excess
          of normal requirements, nor are prices provided therein in
          excess of current market prices for the products or services
          to be provided thereunder. No material supplier of the
          Company or any Subsidiary has indicated to the Company or
          such Subsidiary within the past year that it will stop, or

                                       31PAGE
<PAGE>
          decrease the rate of, supplying materials, products or
          services to them and no material customer of the Company or
          any Subsidiary has indicated to the Company or such
          Subsidiary within the past year that it will stop, or
          decrease the rate of, buying, leasing or licensing
          materials, products or services from them. Section 2.27 of
          the Disclosure Schedule sets forth a list of (a) each
          customer that accounted for more than 5% of the consolidated
          revenues of the Company during the last full fiscal year or
          the interim period through the Most Recent Fiscal Quarter
          End and the amount of revenues accounted for by such
          customer during each such period and (b) each supplier that
          is the sole supplier of any significant product or component
          to the Company or a Subsidiary.

          2.28  BANKING FACILITIES.

          (a) Section 2.28 of the Disclosure Schedule sets forth a
          true, correct and complete list of: (i) each bank, savings
          and loan or similar financial institution at which the
          Company or any Subsidiary has an account, safety deposit
          box, line of credit or credit facility and the numbers of
          the accounts or safety deposit boxes maintained by the
          Company or any Subsidiary thereat and details, including
          terms, of any line of credit or credit facility; and (ii)
          the names of all persons authorized to draw on each such
          account or to have access to any such safety deposit box
          facility, together with a description of the authority (and
          conditions thereof, if any) of each such person with respect
          thereto.

          (b) All of the outstanding indebtedness (secured or
          unsecured) for borrowed money of the Company may be prepaid
          without the consent or approval of, or prior notice to, any
          other person, and without payment of any premium or penalty.

          2.29  SURETYSHIPS.  Except as set forth in Section 2.29 of
          the Disclosure Schedule, none of the Company or any
          Subsidiary has any obligation or liability (whether actual,
          accrued, accruing, contingent or otherwise) as guarantor,
          surety, co-signer, endorser, co-maker, indemnitor or
          otherwise in respect of the obligation of any person,
          corporation, partnership, joint venture, association,
          organization or other entity, except as endorser or maker of
          checks or letters of credit, respectively, endorsed or made
          in the ordinary course of business.

          2.30  BACKLOG.  As of December 31, 1996, the Company's
          backlog of binding purchase orders with firm shipment dates
          no later than March 30, 1997 was at least $1.297 million.

          2.31  GOVERNMENT CONTRACTS.  The Company has not been
          suspended or debarred from bidding on contracts or
          subcontracts with any Governmental Entity and no such

                                       32PAGE
<PAGE>
          suspension or debarment has been initiated or, to the
          Company's knowledge, threatened.  The consummation of the
          transactions contemplated by this Agreement will not result
          in any such suspension or debarment. The Company has not
          been audited or investigated and is not now being audited or
          investigated by the U.S. Government Accounting Office, the
          U.S. Department of Defense or any of its agencies, the
          Defense Contract Audit Agency, the U.S. Department of
          Justice, the Inspector General of any U.S. Governmental
          Entity, any similar agencies or instrumentalities of any
          foreign Governmental Entity, or any price contractor with a
          Governmental Entity nor, to the Company's knowledge, has any
          such audit or investigation been threatened. To the
          Company's knowledge, there is no valid basis for (a) the
          suspension or debarment of the Company from bidding on
          contracts or subcontracts with any Governmental Entity or
          (b) any claim pursuant to an audit or investigation by any
          of the entities named in the foregoing sentence. The Company
          has no agreements, contracts or commitments which require it
          to obtain or maintain a security clearance with any
          Governmental Entity.

          2.32  INVENTORIES.  All Inventories (as defined below) are
          of a quality and quantity usable and salable in the Ordinary
          Course of Business.  Items included in such Inventories are
          carried on the books of the Company at the lower of cost or
          market and, with respect to Inventories existing as of the
          Most Recent Fiscal Quarter End, are reflected on the Most
          Recent Balance Sheet, net of applicable reserves for excess
          and obsolete items.  Such reserves have been determined in
          accordance with past practices and conform to GAAP.  The
          term "Inventories" includes all stock of raw materials,
          work-in-process and finished goods, including demonstration
          inventory, owned by the Company, for manufacturing,
          assembly, processing, finishing, demonstration and sale or
          resale to others.

          2.33  DISCLOSURE.  No representation or warranty of the
          Company in this Agreement and no statement in the Disclosure
          Schedule omits to state a material fact necessary to make
          the statements herein or therein, in light of the
          circumstances in which they were made, not misleading.

                                   ARTICLE III
                   REPRESENTATIONS AND WARRANTIES OF THE BUYER
                          AND THE TRANSITORY SUBSIDIARY

          Each of the Buyer and the Transitory Subsidiary represents
          and warrants to the Company as follows:

          3.1  ORGANIZATION.  Each of the Buyer and the Transitory
          Subsidiary is a corporation duly organized, validly existing
          and in corporate good standing under the laws of the state
          of its incorporation.  Buyer and Transitory Subsidiary have

                                       33PAGE
<PAGE>
          delivered to the Company true and correct copies of their
          Certificates of Incorporation and By-laws, as amended.

          3.2  AUTHORIZATION OF TRANSACTION.  Each of the Buyer and
          the Transitory Subsidiary has all requisite power and
          authority to execute and deliver this Agreement and (in the
          case of the Buyer) the Escrow Agreement and to perform its
          obligations hereunder and thereunder. The execution and
          delivery of this Agreement and (in the case of the Buyer)
          the Escrow Agreement by the Buyer and the Transitory
          Subsidiary, the performance of this Agreement and (in the
          case of the Buyer) the Escrow Agreement and the consummation
          of the transactions contemplated hereby and thereby by the
          Buyer and the Transitory Subsidiary have been duly and
          validly authorized by all necessary corporate action on the
          part of the Buyer and the Transitory Subsidiary. This
          Agreement has been duly and validly executed and delivered
          by the Buyer and the Transitory Subsidiary and constitutes a
          valid and binding obligation of the Buyer and the Transitory
          Subsidiary, enforceable against them in accordance with its
          terms.  The Board of Directors of each of the Buyer and the
          Transitory Subsidiary has approved this Merger and the
          transactions contemplated hereby and the approval of the
          stockholders of the Buyer is not required for this Merger.

          3.3  NONCONTRAVENTION.  Subject to compliance with the
          applicable requirements of  the Hart-Scott-Rodino Act and
          the filing of the Merger Documents with the Secretary of
          State of the State of California and the Secretary of State
          of the State of Delaware, neither the execution and delivery
          of this Agreement or (in the case of the Buyer) the Escrow
          Agreement by the Buyer or the Transitory Subsidiary, nor the
          consummation by the Buyer or the Transitory Subsidiary of
          the transactions contemplated hereby or thereby, will (a)
          conflict or violate any provision of the charter or Bylaws
          of the Buyer or the Transitory Subsidiary, (b) require on
          the part of the Buyer or the Transitory Subsidiary any
          filing with, or permit, authorization, consent or approval
          of any Governmental Entity, (c) conflict with, result in
          breach of, constitute (with or without due notice or lapse
          of time or both) a default under, result in the acceleration
          of, create in any party any right to accelerate, terminate,
          modify or cancel, or require any notice, consent or waiver
          under, any contract, lease, sublease, license, sublicense,
          franchise, permit, indenture, agreement or mortgage for
          borrowed money, instrument of indebtedness, Security
          Interest or other arrangement to which the Buyer or the
          Transitory Subsidiary is a party or by which either is bound
          or to which any of their assets are subject, or (d) violate
          any order, writ, injunction, decree, statute, rule or
          regulation applicable to the Buyer or the Transitory
          Subsidiary or any of their properties or assets.

                                       34PAGE
<PAGE>
          3.4  BROKERS' FEES.  Neither the Buyer nor the Transitory
          Subsidiary has any liability or obligation to pay any fees
          or commissions to any broker, finder or agent with respect
          to the transactions contemplated by this Agreement.

                                   ARTICLE IV
                                    COVENANTS

          4.1  BEST EFFORTS.  Each of the Parties shall use its best
          efforts to take all actions and to do all things necessary,
          proper or advisable to consummate the transactions
          contemplated by this Agreement; provided, however, that
          notwithstanding anything in this Agreement to the contrary,
          the Buyer shall not be required to sell or dispose of or
          hold separately (through a trust or otherwise) any assets or
          businesses of the Buyer or its Affiliates.

          4.2  NOTICES AND CONSENTS.  The Company shall use its best
          efforts to obtain, at its expense, all such waivers,
          permits, consents, approvals or other authorizations from
          third parties and Governmental Entities, and to effect all
          such registrations, filings and notices with or to third
          parties and Governmental Entities, as may be required by or
          with respect to the Company in connection with the
          transactions contemplated by this Agreement (including
          without limitation those listed in Section 2.4 of the
          Disclosure Schedule).

          4.3  SHAREHOLDERS' APPROVAL.  The Company shall take all
          action necessary in accordance with applicable law to
          convene the Shareholder Meeting at the earliest possible
          time after the date hereof for the purpose of approving the
          Merger. The Company shall submit the Merger to its
          shareholders for their approval, and its Board of Directors
          shall recommend to the shareholders, and continue to
          recommend until the completion of the Shareholder Meeting,
          the adoption of this Agreement and the approval of the
          Merger.  The Company shall use all reasonable efforts to
          solicit proxies from its shareholders and otherwise to
          obtain all votes and approvals of the shareholders necessary
          for the approval and adoption of the Merger under California
          Law and its Amended and Restated Articles of Incorporation
          and Bylaws.

          4.4  HART-SCOTT-RODINO ACT.  Each of the Parties shall file
          at the earliest possible time after the date hereof, the
          Notification and Report Forms and related material (if any)
          required to be filed by it with the Federal Trade Commission
          and the Antitrust Division of the United States Department
          of Justice under the Hart-Scott-Rodino Act, and each shall
          use its best efforts to obtain an early termination of the
          applicable waiting period, and shall make promptly any
          further filings or information submissions pursuant thereto
          that may be necessary, proper or advisable; provided,

                                       35PAGE
<PAGE>
          however, that the Buyer shall not be obligated to respond to
          formal requests for additional information or documentary
          material pursuant to 16 C.F.R. 803.20 under the
          Hart-Scott-Rodino Act except to the extent it elects to do
          so in its sole discretion.

          4.5  OPERATION OF BUSINESS.  Except as contemplated by this
          Agreement, during the period from the date of this Agreement
          to the Effective Time, the Company shall (and shall cause
          each Subsidiary to) conduct its operations in the ordinary
          course of business and in compliance with all applicable
          laws and regulations and, to the extent consistent
          therewith, use all reasonable efforts to preserve intact its
          current business organization, keep its physical assets in
          good working condition, keep available the services of its
          current officers and employees and preserve its
          relationships with customers, suppliers and others having
          business dealings with it to the end that its goodwill and
          ongoing business shall not be impaired in any material
          respect. Without limiting the generality of the foregoing,
          prior to the Effective Time or termination of this Agreement
          pursuant to Section 6.1 hereof, neither the Company nor any
          Subsidiary shall, without the written consent of the Buyer:

          (a) issue, sell, deliver or agree or commit to issue, sell
          or deliver (whether through the issuance or granting of
          options, warrants, commitments, subscriptions, rights to
          purchase or otherwise) or authorize the issuance, sale or
          delivery of, or redeem or repurchase, any stock of any class
          or any other securities or any rights, warrants or options
          to acquire any such stock or other securities (except
          pursuant to the conversion or exercise of Series B Stock,
          Series C Stock, Series D Stock, Company Options or Company
          Warrants outstanding on the date hereof in accordance with
          their terms), or amend any of the terms of any such stock,
          securities, rights, warrants or options, except that the
          Company may issue to employees hired after the date hereof
          options (subject to standard vesting) to purchase an
          aggregate of not more than 10,000 shares of Common Stock
          pursuant to the Company's 1988 Incentive Stock Option Plan;

          (b) split, combine or reclassify any shares of its capital
          stock; or declare, set aside or pay any dividend or other
          distribution (whether in cash, stock or property or any
          combination thereof) in respect of its capital stock;

          (c) create, incur or assume any debt not currently
          outstanding (including obligations in respect of capital
          leases) except in the ordinary course of business; assume,
          guarantee, endorse or otherwise become liable or responsible
          (whether directly, contingently or otherwise) for the
          obligations of any other person or entity; or make any
          loans, advances or capital contributions to, or investments
          in, any other person or entity;

                                       36PAGE
<PAGE>
          (d) enter into, adopt or amend any Employee Benefit Plan or
          any employment or severance agreement or arrangement of the
          type described in Section 2.20(j) or (except for normal
          increases in the ordinary course of business and consistent
          with past practices) increase in any manner the compensation
          or fringe benefits of, or modify the employment terms of,
          its directors, officers or employees, generally or
          individually, or pay any benefit not required by the terms
          in effect on the date hereof of any existing Employee
          Benefit Plan;

          (e) acquire, sell, lease, encumber or dispose of any assets
          or property (including without limitation any shares or
          other equity interests in or securities of any Subsidiary or
          any corporation, partnership, association or other business
          organization or division thereof), other than purchases and
          sales of assets in the ordinary course of business;

          (f) amend its Amended and Restated Articles of Incorporation
          or Bylaws;

          (g) change in any material respect its accounting methods,
          principles or practices, except insofar as may be required
          by a generally applicable change in GAAP;

          (h) discharge or satisfy any Security Interest or pay any
          obligation or liability other than in the ordinary course of
          business;

          (i) mortgage or pledge any of its property or assets or
          subject any such assets to any Security Interest other than
          in the ordinary course of business;

          (j) sell, assign, transfer or license any Intellectual
          Property, other than in the ordinary course of business
          other than the license of SPM-related technology in
          connection with the establishment of PSI Korea on terms
          substantially as provided to the Buyer in a memo dated
          December 6, 1996;

          (k) enter into any contract of the kind described in Section
          2.14 or, amend, terminate, take or omit to take any action
          that would constitute a violation of or default under, or
          waive any rights under, any contract or agreement listed in
          Section 2.14 of the Disclosure Schedule;

          (l) make or commit to make any capital expenditure in excess
          of $25,000 per item;

          (m) make any Tax election or, except in the ordinary course
          of business, settle or compromise any federal, state, local
          or foreign Tax liability;

                                       37PAGE
<PAGE>
          (n) take any action or fail to take any action permitted by
          this Agreement with the knowledge that such action or
          failure to take action would result in (i) any of the
          representations and warranties of the Company set forth in
          this Agreement becoming untrue or (ii) any of the conditions
          to the Merger set forth in Article V not being satisfied; or

          (o) agree in writing or otherwise to take any of the
          foregoing actions.

          4.8  FULL ACCESS.  The Company shall (and shall cause each
          Subsidiary to) permit representatives of the Buyer to have
          full access (at all reasonable times, and in a manner so as
          not to interfere with the normal business operations of the
          Company and the Subsidiaries) to all premises, properties,
          financial and accounting records, contracts, other records
          and documents, and personnel, of or pertaining to the
          Company and each Subsidiary.

          4.9  NOTICE OF BREACHES.  The Company shall promptly deliver
          to the Buyer written notice of any event or development that
          would (a) render any statement, representation or warranty
          of the Company in this Agreement (including the Disclosure
          Schedule) inaccurate or incomplete in any material respect,
          or (b) constitute or result in a breach by the Company of,
          or a failure by the Company to comply with, any agreement or
          covenant in this Agreement applicable to the Company. The
          Buyer or the Transitory Subsidiary shall promptly deliver to
          the Company written notice of any event or development that
          would (i) render any statement, representation or warranty
          of the Buyer or the Transitory Subsidiary in this Agreement
          inaccurate or incomplete in any material respect, or (ii)
          constitute or result in a breach by the Buyer or the
          Transitory Subsidiary of, or a failure by the Buyer or the
          Transitory Subsidiary to comply with, any agreement or
          covenant in this Agreement applicable to such party. No such
          disclosure shall be deemed to avoid or cure any such
          misrepresentation or breach.

          4.10  EXCLUSIVITY.  Neither the Company nor any Subsidiary
          shall, and the Company shall use its best efforts and shall
          cause its subsidiaries to use best efforts to cause their
          respective Affiliates and each of their respective officers,
          directors, employees, representatives and agents not to,
          directly or indirectly, (a) encourage, solicit, initiate,
          engage or participate in discussions or negotiations with
          any person or entity (other than the Buyer) concerning any
          merger, consolidation, sale of material assets, tender
          offer, recapitalization, accumulation of shares of the
          Company's capital stock, proxy solicitation or other
          business combination involving the Company, any Subsidiary
          or any division of the Company or any Subsidiary or (b)
          provide any non-public information concerning the business,

                                       38PAGE
<PAGE>
          properties or assets of the Company or any Subsidiary to any
          person or entity (other than the Buyer).

          4.11  PROXY STATEMENT OR INFORMATION STATEMENT.   None of
          the information included in or incorporated by reference in
          the proxy statement or information statement relating to the
          meeting of the Company's shareholders (the "Shareholder
          Meeting") to be held in connection with the Merger (the
          "Proxy Statement") will, at the date it or any amendments or
          supplements thereto are mailed to shareholders, at the time
          of the Shareholder Meeting and at the Effective Time,
          contain any untrue statement of a material fact or omit to
          state any material fact required to be stated therein or
          necessary in order to make the statements therein, in light
          of the circumstances under which they are made, not
          misleading.  If at any time prior to the Effective Time any
          event relating to the Company or any of its respective
          Affiliates, officers or directors should be discovered by
          the Company which should be set forth in an amendment or
          supplement to the Proxy Statement, the Company shall
          promptly inform the Buyer. Notwithstanding the foregoing,
          the Company makes no representation or warranty with respect
          to any information supplied by the Buyer or the Transitory
          Subsidiary which is contained in any of the foregoing
          documents.

          4.12  BENEFIT ARRANGEMENTS.   Buyer covenants and agrees
          that to the extent the existing benefit plans and
          arrangements provided by the Company to its employees are
          terminated on or after the Effective Time, such employees
          shall be entitled to participate in benefit plans and
          arrangements which are, in the aggregate, comparable to the
          benefit plans and arrangements which are available and
          subsequently become available to employees of the Buyer's
          Subsidiaries.

                                    ARTICLE V
                      CONDITIONS TO CONSUMMATION OF MERGER

          5.1  CONDITIONS TO EACH PARTY'S OBLIGATIONS.  The respective
          obligations of each Party to consummate the Merger are
          subject to the satisfaction of the following conditions:

          (a) this Agreement and the Merger shall have received the
          Requisite Shareholder Approval;

          (b) all applicable waiting periods (and any extensions
          thereof) under the Hart-Scott-Rodino Act shall have expired
          or otherwise been terminated;

          (c) no action, suit or proceeding shall be pending or
          threatened by or before any Governmental Entity wherein an
          unfavorable judgment, order, decree, stipulation or
          injunction would (i) prevent consummation of any of the

                                       39PAGE
<PAGE>
          transactions contemplated by this Agreement or (ii) cause
          any of the transactions contemplated by this Agreement to be
          rescinded following consummation.

          5.2  CONDITIONS TO OBLIGATIONS OF THE BUYER AND THE
          TRANSITORY SUBSIDIARY.  The obligation of each of the Buyer
          and the Transitory Subsidiary to consummate the Merger is
          subject to the satisfaction of the following additional
          conditions:

          (a) the holders of at least ninety percent (90%) of the
          outstanding shares of the Company Common Stock and 90% of
          the outstanding shares of each series of Preferred Stock
          entitled to vote therefor, shall have voted in favor of the
          Merger;

          (b) the Company and the Subsidiaries shall have obtained all
          of the waivers, permits, consents, approvals or other
          authorizations, and effected all of the registrations,
          filings and notices, referred to in Section 4.2;

          (c) no action, suit or proceeding shall be pending or
          threatened by or before any Governmental Entity wherein an
          unfavorable judgment, order, decree, stipulation or
          injunction would affect adversely the right of the Buyer to
          own, operate or control any of the assets and operations of
          the Surviving Corporation and the Subsidiaries following the
          Merger, and no such judgment, order, decree, stipulation or
          injunction shall be in effect; provided that any suit or
          action filed prior to the Effective Time against the Company
          by Digital Instruments Corporation asserting any patent
          infringement claim made by Digital Instruments Corporation
          related to the allegations described in Section 2.12(c) of
          the Disclosure Schedules shall be deemed not to adversely
          affect the rights of the Buyer following the Merger;

          (d) the representations and warranties of the Company set
          forth in Article II shall be true and correct when made on
          the date hereof and shall be true and correct in all
          material respects as of the Effective Time as if made as of
          the Effective Time, except for representations and
          warranties made as of a specific date, which shall be true
          and correct as of such date; provided that any suit or
          action filed by Digital Instruments Corporation described in
          Section 5.2(c) shall not be deemed to make any
          representation untrue in any material respect.  

          (e) the Company shall have performed or complied with its
          agreements and covenants required to be performed or
          complied with under this Agreement as of or prior to the
          Effective Time;

          (f) the Company shall have delivered to the Buyer and the
          Transitory Subsidiary a certificate (without qualification

                                       40PAGE
<PAGE>
          as to knowledge or materiality or otherwise) to the effect
          that each of the conditions specified in clauses (a) through
          (d) of this Section 5.2 is satisfied in all respects;

          (g) the Buyer and the Transitory Subsidiary shall have
          received from Venture Law Group, counsel to the Company, an
          opinion dated as of the Closing Date in the form attached as
          Exhibit C; 

          (h) the Buyer and the Transitory Subsidiary shall have
          received the resignations, effective as of the Effective
          Time, of each director and officer of the Company and the
          Subsidiaries specified by the Buyer in writing at least five
          business days prior to the Closing;

          (i) all agreements between the Company and the Company
          Shareholders, including, without limitation, the Series B
          Agreement, the Series C Agreement, the Series D Agreement
          and the Series E Agreement shall have been terminated prior
          to, or shall terminate effective upon, the Effective Time
          with the effect that the Company shall have no further
          obligation or liability thereunder;

          (j) all Company Warrants shall have been exercised prior to,
          or shall be exercised effective upon, the Effective Time
          with the effect that the Company shall have no further
          obligation or liability thereunder; 

          (k) each of Stan Yarbro, Michael Kirk, James A. Bly, Wilbur
          Sattler, William Muller and Raoul Jobin shall  have executed
          a non-competition agreement in substantially the form
          attached hereto as Exhibit D;

          (l) in response to its recent application, the Company shall
          have received Export Commodity Control Number
          classifications for the Company's products from the United
          States Department of Commerce, which classifications shall
          be reasonably satisfactory to Buyer; 

          (m) the Company's Closing Backlog shall be at least
          $1,500,000;

          (n) the Company shall have signed a license agreement and
          side letter with IBM in the form attached hereto as Exhibit
          F, Exhibit 2 of which shall require total payments of not
          more than $120,000 per year from the Company to IBM; and

          (o) all actions to be taken by the Company in connection
          with the consummation of the transactions contemplated
          hereby and all certificates, opinions, instruments and other
          documents required to effect the transactions contemplated
          hereby shall be reasonably satisfactory in form and
          substance to the Buyer.

                                       41PAGE
<PAGE>
          5.3  CONDITIONS TO OBLIGATIONS OF THE COMPANY.  The
          obligation of the Company to consummate the Merger is
          subject to the satisfaction of the following additional
          conditions:

          (a) the representations and warranties of the Buyer and the
          Transitory Subsidiary set forth in Article III shall be true
          and correct when made on the date hereof and shall be true
          and correct in all material respects as of the Effective
          Time as if made as of the Effective Time, except for
          representations and warranties made as of a specific date,
          which shall be true and correct as of such date;

          (b) each of the Buyer and the Transitory Subsidiary shall
          have performed or complied with its agreements and covenants
          required to be performed or complied with under this
          Agreement as of or prior to the Effective Time;

          (c) each of the Buyer and the Transitory Subsidiary shall
          have delivered to the Company a certificate (without
          qualification as to knowledge or materiality or otherwise)
          to the effect that each of the conditions specified in
          clauses (a) and (b) of this Section 5.3 is satisfied in all
          respects; and

          (d) the Company shall have received from Seth H. Hoogasian,
          General Counsel of the Buyer, an opinion dated as of the
          Closing Date in the form attached as Exhibit E.

          (e) all actions to be taken by the Buyer and the Transitory
          Subsidiary in connection with the consummation of the
          transactions contemplated hereby and all certificates,
          instruments and other documents required to effect the
          transactions contemplated hereby shall be reasonably
          satisfactory in form and substance to the Company.

                                   ARTICLE VI
                                   TERMINATION

          6.1  TERMINATION OF AGREEMENT.  The Parties may terminate
          this Agreement prior to the Effective Time (whether before
          or after Requisite Shareholder Approval) as provided below:

          (a) the Parties may terminate this Agreement by mutual
          written consent duly authorized by all necessary corporate
          actions;

          (b) the Buyer may terminate this Agreement by giving written
          notice to the Company in the event the Company is in breach
          of any material representation, warranty or covenant
          contained in this Agreement, and such breach is not remedied
          within 10 days of delivery of written notice thereof, and
          the Company may terminate this Agreement by giving written
          notice to the Buyer and the Transitory Subsidiary in the

                                       42PAGE
<PAGE>
          event the Buyer or the Transitory Subsidiary is in breach of
          any material representation, warranty or covenant contained
          in this Agreement, and such breach is not remedied within 10
          days of delivery of written notice thereof;

          (c) any Party may terminate this Agreement by giving written
          notice to the other Parties at any time after the Company
          Shareholders have voted on whether to approve this Agreement
          and the Merger in the event this Agreement and the Merger
          fail to receive the Requisite Shareholder Approval;

          (d) any Party may terminate this Agreement if (i) there
          shall be an order of a court in effect to prevent
          consummation of this Agreement or (ii) there shall be any
          action taken, or any statute, rule, regulation or order
          enacted, promulgated, issued or deemed applicable to this
          Agreement or the transactions contemplated hereby, by any
          Governmental Entity that would make the consummation of this
          Agreement illegal;

          (e) the Buyer may terminate this Agreement by giving written
          notice to the Company if the Closing shall not have occurred
          on or before March 31, 1997 by reason of the failure of any
          condition precedent under Section 5.1 or 5.2 hereof (unless
          the failure results from a breach by the Buyer or the
          Transitory Subsidiary of any representation, warranty or
          covenant contained in this Agreement); or

          (f) the Company may terminate this Agreement by giving
          written notice to the Buyer and the Transitory Subsidiary if
          the Closing shall not have occurred on or before March 31,
          1997 by reason of the failure of any condition precedent
          under Section 5.1 or 5.3 hereof (unless the failure results
          from a breach by the Company of any representation, warranty
          or covenant contained in this Agreement).

          6.2  EFFECT OF TERMINATION.  If any Party terminates this
          Agreement pursuant to Section 6.1, all obligations of the
          Parties hereunder shall terminate without any liability of
          any Party or its officers or directors, to any other Party,
           except to the extent such termination results from the
          breach by such Party of any material representation,
          warranty or covenant contained in this Agreement, provided
          that the obligations under Section 8.1 shall survive the
          termination of this Agreement.

                                   ARTICLE VII
                                   DEFINITIONS

          For purposes of this Agreement, each of the following
          defined terms is defined in the Section of this Agreement
          indicated below.

                                       43PAGE
<PAGE>
          DEFINED TERM                                       SECTION
                                          SECTION

          Affiliate                                          2.14(g)
          Amended and Restated Articles of                       2.1
          Incorporation
          Buyer                                         Introduction

          Buyer Common Stock                                    1.12
          Buyer Options                                         1.12
          California Law                                         1.1

          CERCLA                                             2.21(a)
          Certificate                                         1.9(b)

          Closing                                                1.6
          Closing Backlog                                     1.5(b)
          Closing Backlog Statement                           1.5(b)

          Closing Balance Sheet                               1.5(b)
          Closing Certificate                                 1.9(a)
          Closing Date                                           1.6

          Closing Consideration                               1.5(c)
          Code                                                2.9(c)
          Common Stock Consideration                          1.5(a)

          Company                                       Introduction
          Company Common Stock                                1.5(a)

          Company Options                                       1.12
          Company Shares                                      1.5(a)
          Company Shareholder                                 1.5(b)

          Company Shareholder Representative                  1.5(b)
          Company Warrants                                       2.2
          Delaware Law                                           1.1

          Disclosure Schedule                             Article II
          Dissenting Shares                                   1.5(d)
          Draft Closing Backlog Statement                     1.5(b)

          Draft Closing Balance Sheet                         1.5(b)
          Effective Time                                         1.3
          Employee Benefit Plan                              2.20(a)

          Engagement Letters                                  1.5(b)
          Environmental Law                                  2.21(a)

          ERISA                                              2.20(a)
          ERISA Affiliate                                    2.20(a)
          Escrow Agreement                                       1.7

          Escrow Agent                                           1.7

                                       44PAGE
<PAGE>
          Escrow Amount                                          1.1

          Exchange Act                                       2.14(g)
          Financial Statements                                   2.6
          GAAP                                                   2.6

          Governmental Entity                                    2.4
          Hart-Scott-Rodino Act                                  2.4
          Initial Escrow Amount                               1.5(c)

          Intellectual Property                              2.12(a)
          Inventories                                           2.32
          Letter of Transmittal                               1.9(b)

          Material Adverse Effect                               2.14
          Materials of Environmental Concern                 2.21(b)
          Merger                                                 1.1

          Merger Consideration                                1.5(b)
          Merger Documents                                       1.3

          Most Recent Balance Sheet                              2.8
          Most Recent Fiscal Quarter End                         2.6
          Net Assets                                          1.5(b)

          Neutral Auditors                                    1.5(b)
          Option Exchange Ratio                                 1.12

          Optionholders                                         1.12
          Ordinary Course of Business                     Article II
          Outstanding Common Stock                            1.5(a)

          Outstanding Series B Stock                          1.5(a)
          Outstanding Series C Stock                          1.5(a)
          Outstanding Series D Stock                          1.5(a)

          Outstanding Series E Stock                          1.5(a)
          Party                                         Introduction
          Paying Agent                                        1.9(b)

          Permit                                                2.23
          Proxy Statement                                       2.34
          Requisite Shareholder Approval                         2.3

          Securities Act                                         2.2
          Security Interest                                      2.4

          Series B Agreement                                     2.1
          Series C Agreement                                     2.1
          Series D Agreement                                     2.1

          Series E Agreement                                     2.1
          Series B Stock                                      1.5(a)

                                       45PAGE
<PAGE>
          Series C Stock                                      1.5(a)

          Series D Stock                                      1.5(a)
          Series E Stock                                      1.5(a)
          Shareholder Meeting                                   2.34

          Subsidiary                                             2.4
          Surviving Corporation                                  1.1
          Taxes                                               2.9(a)

          Tax Returns                                         2.9(a)
          Third Party Intellectual Property Rights           2.12(a)
          Transitory Subsidiary                         Introduction


                                  ARTICLE VIII
                                  MISCELLANEOUS

          8.1  PRESS RELEASES AND ANNOUNCEMENTS.  No Party shall issue
          any press release or public disclosure relating to the
          subject matter of this Agreement without the prior approval
          of the other Parties, which shall not unreasonably be
          withheld; provided, however, that the Buyer may make any
          public disclosure it believes in good faith is required by
          law, regulation or stock exchange rule (in which case the
          Buyer shall advise the other Parties and provide them with a
          copy of the proposed disclosure prior to making the
          disclosure).

          8.2  TAX PAYMENTS.

          (a)  Except as provided in Section 8.2(b) hereof:

               (i)  The Company Shareholders shall be liable for any
          and all claims, losses, liabilities, obligations, damages,
          impositions, assessments, demands, judgments, settlements,
          costs and expenses (including reasonable attorneys',
          accountants' and experts' fees and expenses) with respect to
          Taxes of the Company or for which the Company may be liable
          with respect to any and all periods (Taxes attributable to
          any portions thereof to be determined in accordance with
          subsection (b)) ending before the Effective Time
          ("Pre-Closing Periods"), except to the extent such Taxes are
          specifically accrued on the face of the Closing Balance
          Sheet.

               (ii)  The Buyer shall be liable for any and all claims,
          losses, liabilities, obligations, damages, impositions,
          assessments, demands, judgments, settlements, costs and
          expenses (including reasonable attorneys', accountants' and
          experts' fees and expenses and any applicable assessments of
          interest and penalties) with respect to Taxes attributable
          to the Company or for which the Company may be liable with
          respect to any and all periods, or portions thereof,

                                       46PAGE
<PAGE>
          beginning on or after the Effective Time ("Post-Closing
          Periods") and with respect to any Taxes arising from the
          Merger solely due to the substitution of the Transitory
          Subsidiary for the Company as the Surviving Corporation.

          (b)  In the case of any Tax that is attributable to a
          taxable period which begins before the Closing Date and ends
          on or after the Closing Date, the amount of Taxes
          attributable to the Pre-Closing Period shall be determined
          as follows:

               (i)  In the case of ad valorem Taxes imposed on the
          Company and franchise or similar Taxes imposed on the
          Company based on capital (including net worth or long-term
          debt) or number of shares of stock authorized, issued or
          outstanding, the portion attributable to the Pre-Closing
          Period shall be the amount of such Taxes for the entire
          taxable period multiplied by a fraction, the numerator of
          which is the number of days in the Pre-Closing Period and
          the denominator of which is the number of days in the entire
          taxable period.

               (ii)  In the case of all other Taxes, the portion
          attributable to the Pre-Closing Period shall be determined
          on the basis of an interim closing of the books of the
          Company as of the Effective Time, and the determination of
          the hypothetical Tax for such Pre-Closing Period, determined
          on the basis of such interim closing of the books, without
          annualization.

          (c)  For purposes of this Section 8.2, any and all
          transactions or events contemplated by this Agreement that
          occur prior to the Effective Time shall be deemed to have
          occurred in the Pre-Closing Period. 

          (d)  To the maximum extent permitted by applicable law,
          neither the Buyer nor any of the Buyer's Affiliates or
          Subsidiaries (including, with respect to Post-Closing
          Periods, the Company) will carry back to any Pre-Closing
          Period of the Company, any loss, credit or deduction
          incurred or generated in, or attributable to, any
          Post-Closing Period that would affect any Tax Return of the
          Company for such period, and the Buyer agrees to make or
          exercise, or cause to be made or exercised, any and all
          necessary or permitted elections or options available under
          applicable law to avoid any such carryback.

          (e)  Any payments to be made by the Company Shareholders
          under this Section 8.2 shall be deducted from the Escrow
          Amount and returned by the Escrow Agent to the Buyer, as
          provided in the Escrow Agreement.

                                       47PAGE
<PAGE>
          (f)  All payments under Sections 1.5(b), 8.2 or 8.12 of this
          Agreement and under the Escrow Agreement shall be deemed
          adjustments to the Merger Consideration for Tax purposes.

          8.3  NO THIRD PARTY BENEFICIARIES.  This Agreement shall not
          confer any rights or remedies upon any person other than the
          Parties and their respective successors and permitted
          assigns.

          8.4  ENTIRE AGREEMENT.  This Agreement (including the
          documents referred to herein) constitutes the entire
          agreement among the Parties and supersedes any prior
          understandings, agreements, or representations by or among
          the Parties, written or oral, with respect to the subject
          matter hereof.

          8.5  SUCCESSION AND ASSIGNMENT.  This Agreement shall be
          binding upon and inure to the benefit of the Parties named
          herein and their respective successors and permitted
          assigns. No Party may assign either this Agreement or any of
          its rights, interests, or obligations hereunder without the
          prior written approval of the other Parties; provided that
          the Transitory Subsidiary may assign its rights, interests
          and obligations hereunder to an Affiliate of the Buyer.

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

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

          8.8  NOTICES.  All notices, requests, demands, claims, and
          other communications hereunder shall be in writing. Any
          notice, request, demand, claim, or other communication
          hereunder shall be deemed duly delivered two business days
          after it is sent by registered or certified mail, return
          receipt requested, postage prepaid, or one business day
          after it is sent via a reputable nationwide overnight
          courier service, in each case to the intended recipient as
          set forth below:

          If to the Company:                Copy to:

          Park Scientific Instruments       Venture Law Group
          1171 Borregas Avenue              2800 Sand Hill Road
          Sunnyvale, CA  94089              Menlo Park, CA 94025

                                       48PAGE
<PAGE>
          Attention: President              Attention: Stanley F.
                                            Pierson, Esq.


          If to the Buyer or the            Copy to:
          Transitory Subsidiary:
          ThermoSpectra Corporation         Thermo Electron
                                            Corporation

          81 Wyman Street                   81 Wyman Street
          Waltham, MA 02254                 Waltham, MA  02254
          Attention: President              Attention: General
                                            Counsel


          Any Party may give any notice, request, demand, claim, or
          other communication hereunder using any other means
          (including personal delivery, expedited courier, messenger
          service, telecopy, telex, ordinary mail, or electronic
          mail), but no such notice, request, demand, claim, or other
          communication shall be deemed to have been duly given unless
          and until it actually is received by the party for whom it
          is intended. Any Party may change the address to which
          notices, requests, demands, claims, and other communications
          hereunder are to be delivered by giving the other Parties
          notice in the manner herein set forth.

          8.9  GOVERNING LAW.  This Agreement shall be governed by and
          construed in accordance with the internal laws (and not the
          law of conflicts) of the State of Delaware.

          8.10  AMENDMENTS AND WAIVERS.  The Parties may mutually
          amend any provision of this Agreement at any time prior to
          the Effective Time; provided, however, that any amendment
          effected subsequent to the Requisite Shareholder Approval
          shall be subject to the restrictions contained in the
          California Law. No amendment of any provision of this
          Agreement shall be valid unless the same shall be in writing
          and signed by all of the Parties. No waiver by any Party of
          any default, misrepresentation, or breach of warranty or
          covenant hereunder, whether intentional or not, shall be
          deemed to extend to any prior or subsequent default,
          misrepresentation, or breach of warranty or covenant
          hereunder or affect in any way any rights arising by virtue
          of any prior or subsequent such occurrence.

          8.11  SEVERABILITY.  Any term or provision of this Agreement
          that is invalid or unenforceable in any situation in any
          jurisdiction shall not affect the validity or enforceability
          of the remaining terms and provisions hereof or the validity
          or enforceability of the offending term or provision in any
          other situation or in any other jurisdiction. If the final
          judgment of a court of competent jurisdiction declares that
          any term or provision hereof is invalid or unenforceable,

                                       49PAGE
<PAGE>
          the Parties agree that the court making the determination of
          invalidity or unenforceability shall have the power to
          reduce the scope, duration, or area of the term or
          provision, to delete specific words or phrases, or to
          replace any invalid or unenforceable term or provision with
          a term or provision that is valid and enforceable and that
          comes closest to expressing the intention of the invalid or
          unenforceable term or provision, and this Agreement shall be
          enforceable as so modified after the expiration of the time
          within which the judgment may be appealed.

          8.12  EXPENSES.  Except as set forth in the Escrow
          Agreement, each of the Parties shall bear its own costs and
          expenses (including legal fees and expenses) incurred in
          connection with this Agreement and the transactions
          contemplated hereby; provided, however, that if the Merger
          is consummated, the Company and the Subsidiaries shall not
          incur more than an aggregate of $75,000 in legal and
          accounting fees and expenses in connection with the Merger,
          and any fees and expenses incurred by the Company or its
          Subsidiaries in excess of such amount shall be deducted from
          the Escrow Amount and returned by the Escrow Agent to the
          Buyer, as provided in the Escrow Agreement.

          8.13  SPECIFIC PERFORMANCE.  Each of the Parties
          acknowledges and agrees that one or more of the other
          Parties would be damaged irreparably in the event any of the
          provisions of this Agreement are not performed in accordance
          with their specific terms or otherwise are breached.
          Accordingly, each of the Parties agrees that the other
          Parties shall be entitled to an injunction or injunctions to
          prevent breaches of the provisions of this Agreement and to
          enforce specifically this Agreement and the terms and
          provisions hereof in any action instituted in any court of
          the United States or any state thereof having jurisdiction
          over the Parties and the matter, in addition to any other
          remedy to which it may be entitled, at law or in equity.

          8.14  CONSTRUCTION.  The language used in this Agreement
          shall be deemed to be the language chosen by the Parties
          hereto to express their mutual intent, and no rule of strict
          construction shall be applied against any Party. Any
          reference to any federal, state, local, or foreign statute
          or law shall be deemed also to refer to all rules and
          regulations promulgated thereunder, unless the context
          requires otherwise.

          8.15  INCORPORATION OF EXHIBITS AND SCHEDULES.  The Exhibits
          and Schedules identified in this Agreement are incorporated
          herein by reference and made a part hereof.

          8.16  SURVIVAL OF THE REPRESENTATIONS AND WARRANTIES.  All
          of the Company's representations and warranties in this
          Agreement, as modified by the Disclosure Schedule, shall

                                       50PAGE
<PAGE>
          survive the Effective Time and continue until the earlier of
          (i) the date two years from the Effective Time or (ii) the
          release of the escrow established pursuant to the Escrow
          Agreement, whereupon the representations and warranties
          shall expire.


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                                       51PAGE
<PAGE>
          IN WITNESS WHEREOF, the Parties hereto have executed this
          Agreement as of the date first above written.


          THERMOSPECTRA CORPORATION


          By:  /s/ Theo Melas-Kyriazi
               ----------------------

          Name: Theo Melas-Kyriazi
          Title: President


          PARK ACQUISITION CORP.


          By:  /s/ Theo Melas-Kyriazi
               ----------------------

          Name: Theo Melas-Kyriazi
          Title: President


          PARK SCIENTIFIC INSTRUMENTS CORPORATION


          By:  /s/ Stanley K. Yarbro
               ---------------------

          Name: Stanley K. Yarbro
          Title: President





                                                                Exhibit 10.4
                AMENDED AND RESTATED MASTER REPURCHASE AGREEMENT

         The Master Repurchase Agreement dated as of August 10, 1994 between
    Thermo Electron Corporation, a Delaware corporation ("Seller"), and
    ThermoSpectra Corporation, a Delaware corporation (the "Buyer"), is
    hereby amended and restated in its entirety as follows on and as of
    December 28, 1996.

    1.   Applicability

         From time to time Buyer and Seller may enter into transactions in
    which Seller agrees to transfer to Buyer certain securities and/or
    financial instruments ("Securities") against the transfer of funds by
    Buyer, with a simultaneous agreement by Buyer to transfer to Seller such
    Securities on demand, against the transfer of funds by Seller.  Each such
    transaction shall be referred to herein as a "Transaction" and shall be
    governed by this Agreement, unless otherwise agreed in writing.

    2.   Definitions

         (a)   "Act of Insolvency", with respect to either party (i) the
    commencement by such party as debtor of any case or proceeding under any
    bankruptcy, insolvency, reorganization, liquidation, dissolution or
    similar law, or such party seeking the appointment of a receiver,
    trustee, custodian or similar official for such party or any substantial
    part of its property; or (ii) the commencement of any such case or
    proceeding against such party, or another seeking such an appointment,
    which (A) is consented to or not timely contested by such party, (B)
    results in the entry of an order for relief, such an appointment or the
    entry of an order having a similar effect, or (C) is not dismissed within
    15 days; or (iii) the making by a party of a general assignment for the
    benefit of creditors; or (iv) the admission in writing by a party of such
    party's inability to pay such party's debts as they become due; 

         (b)  "Additional Purchased Securities", Securities provided by
    Seller to Buyer pursuant to Paragraph 4(a) hereof; 

         (c)  "Income", with respect to any Security at any time, any
    principal thereof then payable and all interest, dividends or other
    distributions thereon; 

         (d)  "Market Value", with respect to any Securities as of any date,
    the price for such Securities on such date obtained from a generally
    recognized source agreed to by the parties or the most recent closing bid
    quotation from such a source, plus accrued Income to the extent not
    included therein (other than any Income transferred to Seller pursuant to
    Paragraph 6 hereof) as of such date (unless contrary to market practice
    for such Securities);

         (e)  "Other Buyers", third parties that have entered into an
    agreement with Seller that is substantially similar to this Agreement;
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         (f)  "Pricing Rate", a rate equal to the Commercial Paper Composite
    rate for 90-day maturities provided by Merrill Lynch, Pierce, Fenner &
    Smith Incorporated (or, if such rate is not available, a substantially
    equivalent rate agreed to by Buyer and Seller) plus 25 basis points,
    which rate shall be adjusted on the first business day of each fiscal
    quarter and shall be in effect for the entirety such fiscal quarter;
     
         (g)  "Purchase Price", the price at which Purchased Securities are
    transferred by Seller to Buyer; 

         (h)  "Purchased Securities", the Securities transferred by Seller to
    Buyer in a Transaction hereunder, and any Securities substituted therefor
    in accordance with Paragraph 9 hereof.  The term "Purchased Securities"
    with respect to any Transaction at any time also shall include Additional
    Purchase Securities transferred pursuant to Paragraph 4(a) and shall
    exclude Securities returned pursuant to Paragraph 4(b);  

         (i)  "Repurchase Collateral Account", a book account maintained by
    Seller containing, among other Securities, the Purchased Securities; and

         (j)  "Repurchase Price", for any Purchased Security, an amount equal
    to the Purchase Price paid by Buyer to Seller for such Purchased
    Security. 

    3.   Transactions

         (a)  A Transaction may be initiated by Buyer upon the transfer of
    the Purchase Price to Seller's account.  Upon such transfer, Seller shall
    transfer to Buyer Purchased Securities having a Market Value equal to
    103% of the Purchase Price.

         (b)  Purchased Securities shall be held in custody for Buyer by
    Seller in the Repurchase Collateral Account.  Seller shall indicate on
    its books for such account Buyer's ownership of the Purchased Securities.
    Upon reasonable request from Buyer, Seller shall provide Buyer with a
    complete list of Purchased Securities owned by Buyer.  

         (c)  Upon demand by Buyer or Seller, Seller shall repurchase from
    Buyer, and Buyer shall sell to Seller, for the Repurchase Price all or
    any part of the Purchased Securities then owned by Buyer.

    4.   Margin Maintenance

         (a)  If at any time the aggregate Market Value of all Purchased
    Securities then owned by Buyer is less than 103% of the aggregate
    Repurchase Price for such Purchased Securities, then Seller shall
    transfer to Buyer additional Securities ("Additional Purchased
    Securities"), so that the aggregate Market Value of such Purchased
    Securities, including any such Additional Purchased Securities, will
    thereupon equal or exceed 103% of such aggregate Repurchase Price.

         (b)  If at any time the aggregate Market Value of all Purchased
    Securities then owned by Buyer exceeds 103% of the aggregate Repurchase
    Price for such Purchased Securities, then Seller may transfer Purchased
    Securities to Seller, so that the aggregate Market Value of such
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    Purchased Securities will thereupon not exceed 103% of such aggregate
    Repurchase Price.

    5.   Interest Payments

         If during any fiscal month Buyer owned Purchased Securities, then on
    the first day of the next following fiscal month Seller shall pay to
    Buyer an amount equal to the sum of the aggregate Repurchase Prices of
    the Purchased Securities owned by Buyer at the close of each day during
    the preceding fiscal month divided by the number of days in such month
    and the product multiplied by the Pricing Rate times the number of days
    in such month divided by 360.

    6.   Income Payments and Voting Rights

         Where a particular Transaction's term extends over an Income payment
    date on the Purchased Securities subject to that Transaction, Buyer
    shall, on the date such Income is payable, transfer to Seller an amount
    equal to such Income payment or payments with respect to any Purchased
    Securities subject to such Transaction.  Seller shall retain all voting
    rights with respect to Purchased Securities sold to Buyer under this
    Agreement.

    7.   Security Interest

         Although the parties intend that all Transactions hereunder be sales
    and purchases and not loans, in the event any such Transactions are
    deemed to be loans, Seller shall be deemed to have pledged to Buyer as
    security for the performance by Seller of its obligations under each such
    Transaction and this Agreement, and shall be deemed to have granted to
    Buyer a security interest in, all of the Purchased Securities with
    respect to all Transactions hereunder and all proceeds thereof.

    8.   Payment and Transfer

         Unless otherwise mutually agreed, all transfers of funds hereunder
    shall be in immediately available funds.  As used herein with respect to
    Securities, "transfer" is intended to have the same meaning as when used
    in Section 8-313 of the Massachusetts Uniform Commercial Code or, where
    applicable, in any federal regulation governing transfers of the
    Securities.

    9.   Substitution

         Buyer hereby grants Seller the authority to manage, in Seller's sole
    discretion, the Purchased Securities held in custody for Buyer by Seller
    in the Repurchase Collateral Account.  Buyer expressly agrees that Seller
    may (i) substitute other Securities for any Purchased Securities and (ii)
    commingle Purchased Securities with other Securities held in the
    Repurchase Collateral Account.  Substitutions shall be made by transfer
    to Buyer of such other Securities and transfer to Seller of the Purchased
    Securities for which substitution is being made.  After substitution, the
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    substituted Securities shall be deemed to be Purchased Securities.
    Securities which are substituted for Purchased Securities shall have a
    Market Value at the time of substitution equal to or greater than the
    Market Value of the Purchase Securities for which such Securities were
    substituted.

    10.  Representations

         Each of Buyer and Seller represents and warrants to the other that
    (i) it is duly authorized to execute and deliver this Agreement, to enter
    into the Transactions contemplated hereunder and to perform its
    obligations hereunder and has taken all necessary action to authorize
    such execution, delivery and performance, (ii) the person signing this
    Agreement on its behalf is duly authorized to do so on its behalf, (iii)
    it has obtained all authorizations of any governmental body required in
    connection with this Agreement and the Transactions hereunder and such
    authorizations are in full force and effect and (iv) the execution,
    delivery and performance of this Agreement and the Transactions hereunder
    will not violate any law, ordinance, charter, by-law or rule applicable
    to it or any agreement by which it is bound or by which any of its assets
    are affected.  On the date for any Transaction Buyer and Seller shall
    each be deemed to repeat all the foregoing representations made by it.

    11.  Events of Default

         In the event that (i) Seller fails to repurchase or Buyer fails to
    transfer Purchased Securities upon demand for repurchase from either
    Buyer or Seller, (ii) Seller or Buyer fails, after one business day's
    notice, to comply with Paragraph 4 hereof, (iii) Buyer fails to make
    payment to Seller pursuant to Paragraph 6 hereof, (iv) Seller fails to
    comply with Paragraph 5 hereof, (v) an Act of Insolvency occurs with
    respect to Seller or Buyer, (vi) any representation made by Seller or
    Buyer shall have been incorrect or untrue in any material respect when
    made or repeated or deemed to have been made or repeated, or (vii) Seller
    or Buyer shall admit to the other its inability to, or its intention not
    to, perform any of its obligations hereunder (each an "Event of
    Default"):

         (a)  At the option of the nondefaulting party, exercised by written
    notice to the defaulting party (which option shall be deemed to have been
    exercised, even if no notice is given, immediately upon the occurrence of
    any Act of Insolvency), Seller shall become obligated to repurchase, and
    Buyer shall become obligated to sell, all Purchased Securities then owned
    by Buyer for the Repurchase Price of such Purchased Securities.

         (b)  If Seller is the defaulting party and Buyer exercises or is
    deemed to have exercised the option referred to in subparagraph (a) of
    this Paragraph, (i) the Seller's obligations hereunder to repurchase all
    Purchased Securities in such Transactions shall thereupon become
    immediately due and payable, (ii) all Income paid after such exercise or
    deemed exercise shall be retained by Buyer and applied to the aggregate
    unpaid Repurchase Prices owed by Seller, and (iii) Seller shall
    immediately deliver to Buyer any Purchased Securities subject to such
    Transactions then in Seller's possession.
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         (c)  In all Transactions in which Buyer is the defaulting party,
    upon tender by Seller of payment of the aggregate Repurchase Prices for
    all such Transactions, Buyer's right, title and interest in all Purchased
    Securities subject to such Transactions shall be deemed transferred to
    Seller, and Buyer shall deliver all such Purchased Securities to Seller.

         (d)  After one business day's notice to the defaulting party (which
    notice need not be given if an Act of Insolvency shall have occurred, and
    which may be the notice given under subparagraph (a) of this Paragraph or
    the notice referred to in clause (ii) of the first sentence of this
    Paragraph), the nondefaulting party may: 

              (i)  as to Transactions in which Seller is the defaulting
    party, (A) immediately sell, in a recognized market at such price or
    prices as Buyer may reasonably deem satisfactory, any or all Purchased
    Securities subject to such Transactions and apply the proceeds thereof to
    the aggregate unpaid Repurchase Prices and any other amounts owing by
    Seller hereunder or (B) in its sole discretion elect, in lieu of selling
    all or a portion of such Purchased Securities, to give Seller credit for
    such Purchased Securities in an amount equal to the price therefor on
    such date, obtained from a generally recognized source or the most recent
    closing bid quotation from such a source, against the aggregate unpaid
    Repurchase Prices and any other amounts owing by Seller hereunder; and

              (ii)  as to Transactions in which Buyer is the defaulting
    party, (A) purchase securities ("Replacement Securities") of the same
    class and amount as any Purchased Securities that are not delivered by
    Buyer to Seller as required hereunder or (B) in its sole discretion
    elect, in lieu of purchasing Replacement Securities, to be deemed to have
    purchased Replacement Securities at the price therefor on such date,
    obtained from a generally recognized source or the most recent closing
    bid quotation from such a source.

         (e)  As to Transactions in which Buyer is the defaulting party,
    Buyer shall be liable to Seller (i) with respect to Purchased Securities
    (other than Additional Purchased Securities), for any excess of the price
    paid (or deemed paid) by Seller for Replacement Securities therefor over
    the Repurchase Price for such Purchased Securities and (ii) with respect
    to Additional Purchased Securities, for the price paid (or deemed paid)
    by Seller for the Replacement Securities therefor.  

         (g)  The defaulting party shall be liable to the nondefaulting party
    for the amount of all reasonable legal or other expenses incurred by the
    nondefaulting party in connection with or as a consequence of an Event of
    Default.

         (h)  The nondefaulting party shall have, in addition to its rights
    hereunder, any rights otherwise available to it under any other agreement
    or applicable law.

    12.  Single Agreement

         Buyer and Seller acknowledge that, and have entered hereinto and
    will enter into each Transaction hereunder in consideration of and in
    reliance upon the fact that, all Transactions hereunder constitute a
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    single business and contractual relationship and have been made in
    consideration of each other.  Accordingly, each of Buyer and Seller
    agrees (i) to perform all of its obligations in respect of each
    Transaction hereunder, and that a default in the performance of any such
    obligations shall constitute a default by it in respect of all
    Transactions hereunder, (ii) that each of them shall be entitled to set
    off claims and apply property held by them in respect of any Transaction
    against obligations owing to them in respect of any other Transactions
    hereunder and (iii) that payments, deliveries and other transfers made by
    either of them in respect of any Transaction shall be deemed to have been
    made in consideration of payments, deliveries and other transfers in
    respect of any other Transactions hereunder, and the obligations to make
    any such payments, deliveries and other transfers may be applied against
    each other and netted.

    13.  Entire Agreement; Severability

         This Agreement shall supersede any existing agreements between the
    parties containing general terms and conditions for repurchase
    transactions.  Each provision and agreement and agreement herein shall be
    treated as separate and independent from any other provision or agreement
    herein and shall be enforceable notwithstanding the unenforceability of
    any such other provision or agreement.

    14.  Non-assignability; Termination

         The rights and obligations of the parties under this Agreement and
    under any Transactions shall not be assigned by either party without the
    prior written consent of the other party.  Subject to the foregoing, this
    Agreement and any Transactions shall be binding upon and shall inure to
    the benefit of the parties and their respective successors and assigns.
    This Agreement may be canceled by either party upon giving written notice
    to the other, except that this Agreement shall, notwithstanding such
    notice, remain applicable to any Transactions then outstanding.

    15.  Governing Law

         This Agreement shall be governed by the laws of the Commonwealth of
    Massachusetts without giving effect to the conflict of law principles
    thereof.

    16.  No Waivers, Etc.

         No express or implied waiver of any Event of Default by either party
    shall constitute a waiver of any other Event of Default and no exercise
    of any remedy hereunder by any party shall constitute a wavier of its
    right to exercise any other remedy hereunder.  No modification or waiver
    of any provision of this Agreement and no consent by any party to a
    departure herefrom shall be effective unless and until such shall be in
    writing and duly executed by both of the parties hereto. 

    17.  Intent

         (a)  The parties recognize that each Transaction is a "repurchase
    agreement" as that term is defined in Section 101 of Title 11 of the
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    United States Code, as amended (except insofar as the type of Securities
    subject to such Transaction or the term of such Transaction would render
    such definition inapplicable), and a "securities contract" as that term
    is defined in Section 741 of Title 11 of the United States Code, as
    amended.

         (b)  It is understood that either party's right to liquidate
    Securities delivered to it in connection with Transactions hereunder or
    to exercise any other remedies pursuant to Paragraph 11 hereof, is a
    contractual right to liquidate such Transaction as described in Sections
    555 and 559 of Title 11 of the United States Code, as amended.

         IN WITNESS WHEREOF, the parties have executed this Agreement as of
    December 28, 1996.


    THERMO ELECTRON CORPORATION        THERMOSPECTRA CORPORATION


    By:   Jonathan W. Painter          By:   Theo Melas-Kyriazi
        -----------------------            ----------------------
    Name: Jonathan W. Painter          Name: Theo Melas-Kyriazi
    Title:Treasurer                    Title:President



                                                                Exhibit 10.7
                                                               
                     PARK SCIENTIFIC INSTRUMENTS CORPORATION
                            1988 INCENTIVE STOCK PLAN

         1.   Purposes of the Plan.  The purposes of this Incentive Stock
    Plan are to attract and retain the best available personnel, to provide
    additional incentive to the Employees of Park Scientific Instruments
    Corporation (the "Company") and to promote the success of the Company's
    business.

              Options granted hereunder may be either Incentive Stock Options
    or Nonstatutory Stock Options, at the discretion of the Board and as
    reflected in the terms of the written option agreement.  The Board also
    has the discretion to grant Stock Purchase Rights.

         2.   Definitions.  As used herein, the following definitions shall
    apply:

              (a)  "Board" shall mean the Committee, if one has been
    appointed, or the Board of Directors of the Company, if no Committee is
    appointed.

              (b)  "Code" shall mean the Internal Revenue Code of 1986, as
    amended.

              (c)  "Committee" shall mean the Committee appointed by the
    Board of Directors in accordance with Section 4(a) of the Plan, if one is
    appointed.

              (d)  "Common Stock" shall mean the Common Stock of the Company.

              (e)  "Company" shall mean Park Scientific Instrument
    Corporation, a California corporation.

              (f)  "Consultant" shall mean any person who is engaged by the
    Company or any Parent or Subsidiary to render consulting services and is
    compensated for such consulting services, and any director of the Company
    whether compensated for such services or not; provided that if and in the
    event the Company registers any class of any equity security pursuant to
    Section 12 of the Securities Exchange Act of 1934, as amended (the
    "Exchange Act"), the term Consultant shall thereafter not include
    directors who are not compensated for their services or are paid only a
    director's fee by the Company.

              (g)  "Continuous Status as an Employee or Consultant" shall
    mean the absence of any interruption or termination of service as an
    Employee or Consultant, as applicable.  Continuous Status as an Employee
    or Consultant shall not be considered interrupted in the case of sick
    leave, military leave, or any other leave of absence approved by the
    Board; provided that such leave is for a period of not more than 90 days
    or reemployment upon the expiration of such leave is guaranteed by
    contract or statute.
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              (h)  "Employee" shall mean any person, including officers and
    directors, employed by the Company or any Parent or Subsidiary of the
    Company.  The payment of a director's fee by the Company shall not be
    sufficient to constitute "employment" by the Company.

              (i)  "Incentive Stock Option" shall mean an Option intended to
    qualify as an incentive stock option within the meaning of Section 422A
    of the Code.

              (j)  "Nonstatutory Stock Option" shall mean an Option not
    intended to qualify as an Incentive Stock Option.

              (k)  "Option" shall mean a stock option granted pursuant to the
    Plan.

              (l)  "Optioned Stock" shall mean the Common Stock subject to an
    Option.

              (m)  "Optionee" shall mean an Employee or Consultant who
    receives an Option.

              (n)  "Parent" shall mean a "parent corporation," whether now or
    hereafter existing, as defined in Section 425(e) of the Code.

              (o)  "Plan" shall mean this 1988 Incentive Stock Plan.

              (p)  "Purchaser" shall mean an Employee or Consultant who
    exercises a Stock Purchase Right.

              (q)  "Share" shall mean a share of the Common Stock, as
    adjusted in accordance with Section 11 of the Plan. 

              (r)  "Stock purchase Right" shall mean a right to purchase
    Common Stock pursuant to the Plan or the right to receive a bonus of
    Common Stock for past services.

              (s)  "Subsidiary" shall mean a "subsidiary corporation,"
    whether now or hereafter existing, as defined in Section 425(f) of the
    Code.

         3.   Stock Subject to the Plan.  Subject to the provisions of
    Section 11 of the Plan, the maximum aggregate number of shares under the
    Plan is 2,000,000 shares of Common Stock.  The Shares may be authorized,
    but unissued, or reacquired Common Stock.

              If an Option or Stock Purchase Right should expire or become
    unexercisable for any reason without having been exercised in full, then
    the unpurchased Shares which were subject thereto shall, unless the Plan
    shall have been terminated, become available for future grant or sale
    under the Plan.  Notwithstanding any other provision of the Plan, shares
    issued under the Plan and later repurchased by the Company shall not
    become available for future grant or sale under the Plan.

         4.   Administration of the Plan.
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              (a)  Procedure.  The Plan shall be administered by the Board of
    Directors of the Company.

                   (i)  Subject to subparagraph (ii), the Board of Directors
    may appoint a Committee consisting of not less than two members of the
    Board of Directors to administer the Plan on behalf of the Board of
    Directors, subject to such terms and conditions as the Board of Directors
    may prescribe.  Once appointed, the Committee shall continue to serve
    until otherwise directed by the Board of Directors.  Members of the Board
    who are either eligible for Options and/or Stock Purchase Rights or have
    been granted Options and/or Stock Purchase Rights may vote on any matters
    affecting the administration of the Plan or the grant of any Options
    and/or Stock Purchase Rights pursuant to the Plan, except that no such
    member shall act upon the granting of an Option and/or Stock Purchase
    Right to such member, but any such member may be counted in determining
    the existence of a quorum at any meeting of the Board during which action
    is taken with respect to the granting of Options and/or Stock Purchase
    Rights to the member.

                   (ii) Notwithstanding the foregoing subparagraph (i), if
    and in any event the Company registers any class of any equity security
    pursuant to Section 12 of the Exchange Act, from the effective date of
    such registration until six months after the termination of such
    registration, any grants of Options and/or Stock Purchase Rights to
    officers or directors shall only be made by the Board of Directors;
    provided, however, that if a majority of the Board of Directors is
    eligible to participate in this Plan or any other stock option or other
    stock plan of the Company or any of its affiliates, or has been eligible
    at any time during the prior one-year period (or, if shorter, the period
    following the initial registration of the Company's equity securities
    under Section 12 of the Exchange Act) any grants of Options and/or Stock
    Purchase Rights to directors must be made by, or only in accordance with
    the recommendation of, a Committee consisting of three or more persons,
    who may but need not be directors or employees of the Company, appointed
    by the Board of Directors and having full authority to act in the matter,
    none of whom is eligible to participate in this Plan or any other stock
    option or other stock plan of the Company or any of its affiliates, or
    has been eligible at any time during the prior one-year period (or, if
    shorter, the period following the initial registration of the Company's
    equity securities under Section 12 of the Exchange Act).  Any Committee
    administering the Plan with respect to grants to officers who are not
    also directors shall conform to the requirements of the preceding
    sentence.  Once appointed, the Committee shall continue to serve until
    otherwise directed by the Board of Directors.

                   (iii)     Subject to the foregoing subparagraphs (i) and
    (ii), from time to time the Board of Directors may increase the size of
    the Committee and appoint additional members thereof, remove members
    (with or without cause) and appoint new members in substitution therefor,
    fill vacancies however caused, or remove all members of the Committee and
    thereafter directly administer the Plan.

              (b)  Powers of the Board.  Subject to the provisions of the
    Plan, the Board shall have the authority, in its discretion:  (i) to
    grant Incentive Stock Options, Nonstatutory Stock Options or Stock
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    Purchase Rights, (ii) to determine, upon review of relevant information
    and in accordance with Section 7 of the Plan, the fair market value of
    the Common Stock; (iii) to determine the exercise price per share of
    Options or Stock Purchase Rights, to be granted, which exercise price
    shall be determined in accordance with Section 7 of the Plan; (iv) to
    determine the Employees or Consultants to whom, and the time or times at
    which, Options or Stock Purchase Rights shall be granted and the number
    of shares to be represented by each Option or Stock Purchase Right, (v)
    to interpret the Plan; (vi) to prescribe, amend and rescind rules and
    regulations relating to the Plan; (vii) to determine the terms and
    provisions of each Option and Stock Purchase Right granted (which need
    not be identical) and, with the consent of the holder thereof, modify or
    amend any provisions (including provisions relating to exercise price) of
    any Option or Stock Purchase Right; (viii) to authorize any person to
    execute on behalf of the Company any instrument required to effectuate
    the grant of an Option or Stock Purchase Right previously granted by the
    Board, and (ix) to make all other determinations deemed necessary or
    advisable for the administration of the Plan. 

              (c)  Effect of Board's Decision.  All decisions, determinations
    and interpretations of the Board shall be final and binding on all
    Optionees, Purchasers and any other holders of any Options or Stock
    Purchase Rights granted under the Plan.

         5.   Eligibility.

              (a)  Options and Stock Purchase Rights may be granted to
    Employees and Consultants, provided that Incentive Stock Options may only
    be granted to Employees.  An Employee or Consultant who has been granted
    an Option or Stock Purchase Right may, if such Employee or Consultant is
    otherwise eligible, be granted additional Option(s) or Stock Purchase
    Right(s).

              (b)  Each Option shall be designated in the written option
    agreement as either an Incentive Stock Option or a Nonstatutory Stock
    Option.  However, notwithstanding such designations, to the extent that
    the aggregate fair market value of the Shares with respect to which
    Options designated as Incentive Stock Options are exercisable for the
    first time by any Optionee during any calendar year (under all plans of
    the Company) exceeds $100,000, such Options shall be treated as
    Nonstatutory Stock Options.

              (c)  For purposes of Section 5(b), Options shall be taken into
    account in the order in which they were granted, and the fair market
    value of the Shares shall be determined as of the time the Option with
    respect to such Shares is granted.

              (d)  The Plan shall not confer upon any Optionee or holder of a
    Stock Purchase Right any right with respect to continuation of employment
    by or the rendition of consulting services to the Company, nor shall it
    interfere in any way with his or her right or the Company's right to
    terminate his or her employment or services at any time, with or without
    cause.
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         6.   Term of Plan.  The Plan shall become effective upon the earlier
    to occur of its adoption by the Board of Directors or its approval by
    vote of the holders of a majority of the outstanding shares of the
    Company entitled to vote on the adoption of the Plan.  It shall continue
    in effect for a term of ten (10) years unless sooner terminated under
    Section 14 of the Plan. 

         7.   Exercise Price and Consideration.

              (a)  The per Share exercise price for the Shares to be issued
    pursuant to exercise of an Option or Stock Purchase Right shall be such
    price as is determined by the Board, but shall be subject to the
    following:

                   (i)  In the case of an Incentive Stock Option

                        (A)  granted to an Employee who, at the time of the
    grant of such Incentive Stock Option, owns stock representing more than
    ten percent (10%) of the voting power of all classes of stock of the
    Company or any Parent or Subsidiary, the per Share exercise price shall
    be no less than 110% of the fair market value per Share on the date of
    grant.

                        (B)  granted to any Employee, the per Share exercise
    price shall be no less than 100% of the fair market value per Share on
    the date of grant.

                   (ii) In the case of a Nonstatutory Stock Option

                        (A)  granted to a person who, at the time of the
    grant of such Option, owns stock representing more than ten percent (10%)
    of the voting power of all classes of stock of the Company or any Parent
    or Subsidiary, the per Share exercise price shall be no less than 110% of
    the fair market value per Share on the date of the grant.

                        (B)  granted to any person, the per Share exercise
    price shall be no less than 85% of the fair market value per Share on the
    date of grant.

                   (iii)     In the case of a Stock Purchase Right

                        (A)  granted to a person who, at the time of the
    grant of such Stock Purchase Right, owns stock representing more than ten
    percent (10%) of the voting power of all classes of stock of the Company
    or any Parent or Subsidiary, the per Share exercise price shall be no
    less than 110% of the fair market value per Share on the date of the
    grant.

                        (B)  granted to any person, the per Share exercise
    price shall be no less than 85% of the fair market value per Share on the
    date of grant.

              For purposes of this Section 7(a), in the event that an Option
    or Stock Purchase Right is amended to reduce the exercise price, the date
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<PAGE>
    of grant of such Option or Stock Purchase Right shall thereafter be
    considered to be the date of such amendment.

              (b)  The fair market value shall be determined by the Board in
    its discretion; provided, however, that where there is a public market
    for the Common Stock, the fair market value per Share shall be the mean
    of the bid and asked prices (or the closing price per share if the Common
    Stock is listed on the National Association of Securities Dealers
    Automated Quotation ("NASDAQ") National Market System of the Common Stock
    for the date of grant, as reported in the Wall Street Journal (or, if not
    so reported, as otherwise reported by the NASDAQ System) or, in the event
    the Common Stock is listed on a stock exchange, the fair market value per
    Share shall be the closing price on such exchange on the date of grant of
    the Option or Stock Purchase Right, as reported in the Wall Street
    Journal.

              (c)  The consideration to be paid for the Shares to be issued
    upon exercise of an Option or Stock Purchase Right, including the method
    of payment, shall be determined by the Board and may consist entirely of
    cash, check, promissory note, other Shares of Common Stock which (i)
    either have been owned by the Optionee for more than six (6) months on
    the date of surrender or were not acquired directly or indirectly, from
    the Company, and (ii) have a fair market value on the date of surrender
    equal to the aggregate exercise price of the Shares as to which said
    Option shall be exercised, or any combination of such methods of payment,
    or such other consideration and method of payment for the issuance of
    Shares to the extent permitted under Sections 408 and 409 of the
    California General Corporation Law.  In making its determination as to
    the type of consideration to accept, the Board shall consider if
    acceptance of such consideration may be reasonably expected to benefit
    the Company (Section 315(b) of the California General Corporation Law).

         8.   Options.

              (a)  Term of Option.  The term of each Incentive Stock Option
    shall be ten (10) years from the date of grant thereof or such shorter
    term as may be provided in the Incentive Stock Option Agreement.  The
    term of each Option that is not an Incentive Stock Option shall be ten
    (10) years and one (1) day from the date of grant thereof or such shorter
    term as may be provided in the Stock Option Agreement.  However, in the
    case of an Option granted to an Optionee who, at the time the Option is
    granted, owns stock representing more than ten percent (10%) of the
    voting power of all classes of stock of the Company or any Parent or
    Subsidiary, (i) if the Option is an Incentive Stock Option, the term of
    the Option shall be five (5) years from the date of grant thereof or such
    shorter time as may be provided in the Stock Option Agreement, or (ii) if
    the Option is a Nonstatutory Stock Option, the term of the Option shall
    be five (5) years and one (1) day from the date of grant thereof or such
    other term as may be provided in the Stock Option Agreement.

              (b)  Exercise of Option.

                   (i)  Procedure for Exercise; Rights as a Shareholder.  Any
    Option granted hereunder shall be exercisable at such times and under
    such conditions as determined by the Board, including performance
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<PAGE>
    criteria with respect to the Company and/or the Optionee, and as shall be
    permissible under the terms of the Plan.

                   An Option may not be exercised for a fraction of a Share.

                   An Option shall be deemed to be exercised when written
    notice of such exercise has been given to the Company in accordance with
    the terms of the Option by the person entitled to exercise the Option and
    full payment for the Shares with respect to which the Option is exercised
    has been received by the Company.  Full payment may, as authorized by the
    Board, consist of any consideration and method of payment allowable under
    Section 7 of the Plan.  Until the issuance (as evidenced by the
    appropriate entry on the books of the Company or of a duly authorized
    transfer agent of the Company) of the stock certificate evidencing such
    Shares, no right to vote or receive dividends or any other rights as a
    shareholder shall exist with respect to the Optioned Stock,
    notwithstanding the exercise of the Option.  The Company shall issue (or
    cause to be issued) such stock certificate promptly upon exercise of the
    Option.  In the event that the exercise of an Option is treated in part
    as the exercise of an Incentive Stock Option and in part as the exercise
    of a Nonstatutory Stock Option pursuant to Section 5(b), the Company
    shall issue a separate stock certificate evidencing the Shares treated as
    acquired upon exercise of an Incentive Stock Option and a separate stock
    certificate evidencing the Shares treated as acquired upon exercise of a
    Nonstatutory Stock Option and shall identify each such certificate
    accordingly in its stock transfer records.  No adjustment will be made
    for a dividend or other right for which the record date is prior to the
    date the stock certificate is issued, except as provided in Section 11 of
    the Plan.

                   Exercise of an Option in any manner shall result in a
    decrease in the number of Shares which thereafter may be available, both
    for purposes of the Plan and for sale under the Option, by the number of
    Shares as to which the Option is exercised.

                   (ii) Termination of Status as an Employee or Consultant.
    In the event of termination of an Optionee's Continuous Status as an
    Employee or Consultant (as the case may be), such Optionee may, but only
    within thirty (30) days (or such other period of time not exceeding three
    (3) months in the case of an Incentive Stock Option or six (6) months in
    the case of a Nonstatutory Stock Option, as is determined by the Board,
    with such determination in the case of an Incentive Stock Option being
    made at the time of grant of the Option) after the date of such
    termination (but in no event later than the date of expiration of the
    term of such Option as set forth in the Option Agreement, exercise the
    Option to the extent that such Employee or Consultant was entitled to
    exercise it at the date of such termination.  To the extent that such
    Employee or Consultant was not entitled to exercise the Option at the
    date of such termination, or if such Employee or Consultant does not
    exercise such Option (which such Employee or Consultant was entitled to
    exercise) within the time specified herein, the Option shall terminate.

                   (iii)     Disability of Optionee.  Notwithstanding the
    provisions of Section 8(b)(ii) above, in the event of termination of an
    Optionee's Continuous  Status as an Employee or Consultant as a result of
PAGE
<PAGE>
    his or her total and permanent disability (within the meaning of Section
    22(e)(3) of the Code), Optionee may, but only within twelve (12) months
    from the date of such termination (but in no event later than the
    expiration date of the term of such Option as set forth in the Option
    Agreement), exercise the Option to the extent such Optionee was otherwise
    entitled to exercise it at the date of such termination.  To the extent
    that Optionee was not entitled to exercise the Option at the date of
    termination, or if Optionee does not exercise such Option to the extent
    so entitled within the time specified herein, the Option shall terminate.

                   In the event of termination of an Optionee's Continuous
    Status as an Employee or Consultant as a result of a disability which
    does not fall within the meaning of total and permanent disability (as
    set forth in Section 22(e)(3) of the Code), Optionee may, but only within
    six (6) months from the date of such termination (but in no event later
    than the expiration date of the term of such Option as set forth in the
    Option Agreement), exercise the Option to the extent such Optionee was
    otherwise entitled to exercise it at the date of such termination.
    However, to the extent that such Optionee fails to exercise an Option
    which is an Incentive Stock Option within three (3) months of the date of
    such termination, the Option will not qualify for ISO treatment under the
    Code.  To the extent that Optionee was not entitled to exercise the
    Option at the date of termination, or if Optionee does not exercise such
    Option to the extent so entitled within six months (6) from the date of
    termination, the Option shall terminate.

              (iv) Death of Optionee.  In the event of the death of an
    Optionee:

                   (a)  during the term of the Option who is at the time of
    his or her death an Employee or Consultant of the Company and who shall
    have been in Continuous Status as an Employee or Consultant since the
    date of grant of the Option, the Option may be exercised, at any time
    within six (6) months (but in no event later than the date of expiration
    of the term of such Option as set forth in the Option Agreement), by
    Optionees estate or by a person who acquired the right to exercise the
    Option by bequest or inheritance, but only to the extent of the right to
    exercise that would have accrued had the Optionee continued living and
    remained in Continuous Status as an Employee or Consultant six (6) months
    (or such other period of time as is determined by the Board at the time
    of grant of the Option) after the date of death; or

                   (b)  within thirty (30) days (or such other period of time
    not exceeding three (3) months as is determined by the Board, with such
    determination in the case of an Incentive Stock Option being made at the
    time of grant of the Option) after the termination of Continuous Status
    as an Employee or Consultant, the Option may be exercised, at any time
    within six (6) months (or such other period of time as is determined by
    the Board at the time of grant of the Option) following the date of death
    (but in no event later than the date of expiration of the term of such
    Option as set forth in the Option Agreement), by the Optionee's estate or
    by a person who acquired the right to exercise the Option by bequest or
    inheritance, but only to the extent of the right to exercise that had
    accrued at the date of termination.
PAGE
<PAGE>
         9.   Stock Purchase Rights.

              (a)  Rights to Purchase.  After the Board of Directors
    determines that it will offer an Employee or Consultant a Stock Purchase
    Right, it shall deliver to the offeree a stock purchase agreement or
    stock bonus agreement, as the case may be, setting forth the terms,
    conditions and restrictions relating to the offer, including the number
    of Shares which such person shall be entitled to purchase, and the time
    within which such person must accept such offer, which shall in no event
    exceed six (6) months from the date upon which the Board of Directors or
    its Committee made the determination to grant the Stock Purchase Right.
    The offer shall be accepted by execution of a stock purchase agreement or
    stock bonus agreement in the form determined by the Board of Directors.

              (b)  Issuance of Shares.  Forthwith after payment therefor, the
    Shares purchased shall be duly issued; provided, however, that the Board
    may require that the Purchaser make adequate provision for any Federal
    and State withholding obligations of the Company as a condition to the
    Purchaser purchasing such Shares.

              (c)  Repurchase Option.  Unless the Board determines otherwise,
    the stock purchase agreement or stock bonus agreement shall grant the
    Company a repurchase option exercisable upon the voluntary or involuntary
    termination of the Purchaser's employment with the Company for any reason
    (including death or disability).  If the Board so determines, the
    purchase price for shares repurchased may be paid by cancellation of any
    indebtedness of the Purchaser to the Company.  The repurchase option
    shall lapse at such rate as the Board may determine.

              (d)  Other Provisions.  The stock purchase agreement or stock
    bonus agreement shall contain such other terms, provisions and conditions
    not inconsistent with the Plan as may be determined by the Board of
    Directors.

         10.  Non-Transferability of Options and Stock Purchase Right.  The
    Options and Stock Purchase Rights may not be sold, pledged, assigned,
    hypothecated, transferred, or disposed of in any manner other than by
    will or by the laws of descent or distribution and may be exercised,
    during the lifetime of the Optionee or Purchaser, only by the Optionee or
    Purchaser.

         11.  Adjustments Upon Changes in Capitalization or Merger.  Subject
    to any required action by the shareholders of the Company, the number of
    shares of Common Stock covered by each outstanding Option and Stock
    Purchase Right, and the number of shares of Common Stock which have been
    authorized for issuance under the Plan but as to which no Options or
    Stock Purchase Rights have yet been granted or which have been returned
    to the Plan upon cancellation or expiration of an Option or Stock
    Purchase Right, or repurchase of Shares from a Purchaser upon termination
    of employment, as well as the price per share of Common Stock covered by
    each such outstanding Option or Stock Purchase Right, shall be
    proportionately adjusted for any increase or decrease in the number of
    issued shares of Common Stock resulting from a stock split, reverse stock
    split, stock dividend, combination or reclassification of the Common
    Stock of the Company or the payment of a stock dividend with respect to
PAGE
<PAGE>
    the Common Stock or any other increase or decrease in the number of
    issued shares of Common Stock effected without receipt of consideration
    by the Company; provided, however, that conversion of any convertible
    securities of the Company shall not be deemed to have been "effected
    without receipt of consideration." Such adjustment shall be made by the
    Board, whose determination in that respect shall be final, binding and
    conclusive.  Except as expressly provided herein, no issuance by the
    Company of shares of stock of any class, or securities convertible into
    shares of stock of any class, shall affect, and no adjustment by reason
    thereof shall be made with respect to, the number or price of shares of
    Common Stock subject to an Option or Stock Purchase Right.

         In the event of the proposed dissolution or liquidation of the
    Company, the Board shall notify the Optionee at least fifteen (15) days
    prior to such proposed action.  To the extent, it has not been previously
    exercised, the Option will terminate immediately prior to the
    consummation of such proposed action.  In the event of a merger of the
    Company with or into another corporation, the Option shall be assumed or
    an equivalent option shall be substituted by such successor corporation
    or a parent or subsidiary of such successor corporation.  

         12.  Time of Granting Options.  The date of grant of an Option or
    Stock Purchase Right shall, for all purposes, be the date on which the
    Board makes the determination granting such Option or Stock Purchase
    Right.  Notice of the determination shall be given to each Employee or
    Consultant to whom an Option or Stock Purchase Right is so granted within
    a reasonable time after the date of such grant.

         13.  Amendment and Termination of the Plan.

              (a)  Amendment and Termination.  The Board may amend or
    terminate the Plan from time to time in such respects as the Board may
    deem advisable; provided that, the following revisions or amendments
    shall require approval of the shareholders of the Company in the manner
    described in Section 17 of the Plan:

              (i)  any increase in the number of Shares subject to the Plan,
    other than in connection with an adjustment under Section 11 of the Plan;

              (ii) any change in the designation of the class of persons
    eligible to be granted Options and Stock Purchase Rights; or

              (iii)     if the Company has a class of equity securities
    registered under Section 12 of the Exchange Act at the time of such
    revision or amendment, any material increase in the benefits accruing to
    participants under the Plan.

              (b)  Shareholder Approval.  If any amendment requiring
    shareholder approval under Section 13(a) of the Plan is made subsequent
    to the first registration of any class of equity securities by the
    Company under Section 12 of the Exchange Act, such shareholder approval
    shall be solicited as described in Section 17 of the Plan.

              (c)  Effect of Amendment or Termination.  Any such amendment or
    termination of the Plan shall not affect Options or Stock Purchase Rights
PAGE
<PAGE>
    already granted and such Options or Stock Purchase Rights shall remain in
    full force and effect as if this Plan had not been amended or terminated,
    unless mutually agreed otherwise between the Optionee or Purchaser (as
    the case may be) and the Board, which agreement must be in writing and
    signed by the Optionee or Purchaser (as the case may be) and the Company.

         14.  Conditions Upon Issuance of Shares.  Shares shall not be issued
    pursuant to the exercise of an Option or Stock Purchase Rights unless the
    exercise of such Option or Stock Purchase Rights and the issuance and
    delivery of such Shares pursuant thereto shall comply with all relevant
    provisions of law, including, without limitation, the Securities Act of
    1933, as amended, the Exchange Act, the rules and regulations promulgated
    thereunder, and the requirements of any stock exchange upon which the
    Shares may then be listed, and shall be further subject to the approval
    of counsel for the Company with respect to such compliance.

              As a condition to the exercise of an Option or Stock Purchase
    Rights, the Company may require the person exercising such Option or
    Stock Purchase Rights to represent and warrant at the time of any such
    exercise that the Shares are being purchased only for investment and
    without any present intention to sell or distribute such Shares if, in
    the opinion of counsel for the Company, such a representation is required
    by any of the aforementioned relevant provisions of law.

         15.  Reservation of Shares.  The Company, during the term of this
    Plan, will at all times reserve and keep available such number of Shares
    as shall be sufficient to satisfy the requirements of the Plan.

              The inability of the Company to obtain authority from any
    regulatory body having jurisdiction, which authority is deemed by the
    Company's counsel to be necessary to the lawful issuance and sale of any
    Shares hereunder, shall relieve the Company of any liability in respect
    of the failure to issue or sell such Shares as to which such requisite
    authority shall not have been obtained.

         16.  Option, Stock Purchase and Stock Bonus Agreements.  Options
    shall be evidenced by written option agreements in such form as the Board
    shall approve.  Upon the exercise of Stock Purchase Rights, the Purchaser
    shall sign a stock purchase agreement or stock bonus agreement in such
    form as the Board shall approve.

         17.  Shareholder Approval.

              (a)  Continuance of the Plan shall be subject to approval by
    the shareholders of the Company within twelve (12) months before or after
    the date the Plan is adopted.  If such shareholder approval is obtained
    at a duly held shareholders' meeting, it must be obtained by the
    affirmative vote of the holders of a majority of the outstanding shares
    of the Company, or if such shareholder approval is obtained by written
    consent, it must be obtained by the unanimous written consent of all
    shareholders of the Company, provided, however, that approval at a
    meeting or by written consent may be obtained by a lesser degree of
    shareholder approval, if the Board determines, in its discretion after
    consultation with the Company's legal counsel, that such a lesser degree
    of shareholder approval will comply with all applicable laws and will not
PAGE
<PAGE>
    adversely affect the qualification of the Plan under Section 422A of the
    Code.

              (b)  If and in the event that the Company registers any class
    of equity securities pursuant to Section 12 of the Exchange Act, any
    required approval of the shareholders of the Company obtained after such
    registration shall be solicited substantially in accordance with Section
    14(a) of the Exchange Act and the rules and regulations promulgated
    thereunder.

              (c)  If any required approval by the shareholders of the Plan
    itself or of any amendment thereto is solicited at any time otherwise
    than in the manner described in Section 17(b) hereof, then the Company
    shall, at or prior to the first annual meeting of shareholders held
    subsequent to the later of (1) the first registration of any class of
    equity securities of the Company under Section 12 of the Exchange Act or
    (2) the granting of an Option hereunder to an officer or director after
    such registration, do the following:

                   (i)  furnish in writing to the holders entitled to vote
    for the Plan substantially the same information which would be required
    (if proxies to be voted with respect to approval or disapproval of the
    Plan or amendment were then being solicited) by the rules and regulations
    in effect under Section 14(a) of the Exchange Act at the time such
    information is furnished; and

                   (ii) file with, or mail for filing to, the Securities and
    Exchange Commission four copies of the written information referred to in
    subsection (i) hereof not later than the date on which such information
    is first sent or given to shareholders.

         18.  Information to Optionees and Purchasers.  The Company shall
    provide financial statements at least annually to each Optionee and
    Purchaser during the period for which such Optionee or Purchaser has one
    or more Options or Stock Purchase Rights outstanding.  The Company shall
    not be required to provide such information if the issuance of Options or
    Stock Purchase Rights under the Plan is limited to key employees whose
    duties in connection with the Company assure their access to equivalent
    information.



                                                            Exhibit 10.17

                            THERMOSPECTRA CORPORATION
                     RESTATED STOCK HOLDING ASSISTANCE PLAN

        SECTION 1.   Purpose.

             The purpose of this Plan is to benefit ThermoSpectra
        Corporation  (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:   ThermoSpectra Corporation, 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 ThermoSpectra Corporation 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
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<PAGE>
        interpretations and decisions with regard to the Plan and the
        Stock Holding Policy and such rules and regulations as may be
        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 in five equal annual installments from the

                                        2PAGE
<PAGE>
        payment of annual cash incentive compensation (referred to as
        bonus) to the Key Employee by the Company, beginning with the
        first such bonus payment to occur after the date of the Note
        evidencing the Loan, and on each of the next four bonus payment
        dates, provided that the Committee may, in its sole and absolute
        discretion, authorize such other maturity and repayment 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.

                                        3PAGE
<PAGE>
             The Plan and the Stock Holding Policy shall become effective
        upon approval and adoption by the Committee.

































                                        4PAGE
<PAGE>
                               EXHIBIT A TO STOCK HOLDING ASSISTANCE PLAN


                            THERMOSPECTRA CORPORATION

                                 Promissory Note



        $_________                                                       
                                                Dated:____________


             For value received, ________________, an individual whose
        residence is located at _______________________ (the "Employee"),
        hereby promises to pay to ThermoSpectra Corporation (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 the Company  an
        amount equal to 20% of the initial principal amount of the Note
        from the payment of annual cash incentive compensation (referred
        to as bonus) to the Employee by the Company, 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.  Any amount
        remaining unpaid under this Note, if no demand has been made by
        the Company, 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;


                                        5PAGE
<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 10.19



        THE SECURITIES REPRESENTED HEREBY HAVE NOT BEEN REGISTERED UNDER
        THE SECURITIES ACT OF 1933, AS AMENDED (THE "ACT").  THESE
        SECURITIES HAVE BEEN ACQUIRED FOR INVESTMENT, AND NOT WITH A VIEW
        TO DISTRIBUTION OR RESALE, AND MAY NOT BE SOLD, PLEDGED,
        MORTGAGED, HYPOTHECATED OR OTHERWISE TRANSFERRED (1) WITHOUT AN
        EFFECTIVE REGISTRATION STATEMENT UNDER THE ACT COVERING THESE
        SECURITIES OR (2) UNLESS AN EXEMPTION FROM REGISTRATION IS
        AVAILABLE.



                            ThermoSpectra Corporation
                       Promissory Note Due March 12, 1999
                             Waltham, Massachusetts
                                                           March 13, 1997


             For value received, ThermoSpectra, a Delaware corporation
        (the "Company"), hereby promises to pay to Thermo Electron
        Corporation (hereinafter referred to as the "Payee"), or
        registered assigns, on March 12, 1999, as described below, the
        principal sum of ten million dollars ($10,000,000) or such part
        thereof as then remains unpaid, to pay interest from the date
        hereof on the whole amount of said principal sum remaining from
        time to time unpaid at a rate per annum equal to the rate of the
        Commercial Paper Composite Rate as reported by Merrill Lynch
        Capital Markets, as an average of the last five business days of
        the fiscal quarter, plus twenty-five (25) basis points, such
        interest to be payable in arrears on the first day of each fiscal
        quarter of the Company during the term set forth herein, until
        the whole amount of the principal hereof remaining unpaid shall
        become due and payable, and to pay interest on all overdue
        principal and interest at a rate per annum equal to the rate of
        interest announced from time to time by The First National Bank
        of Boston at its head office in Boston, Massachusetts as its
        "base rate" plus one percent (1%).  Principal and all accrued but
        unpaid interest shall be repaid on March 12, 1999.  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 Payee or at such other place as the legal holder may
        designate from time to time in writing to the Company.  Interest
        shall be computed on an actual 360-day basis.

             This Note may be prepaid at any time or from time to time,
        in whole or in part, without any premium or penalty.  All
        prepayments shall be applied first to accrued interest and then
        to principal.
                                        1PAGE
<PAGE>
             The then unpaid principal amount of, and interest
        outstanding on, this Note shall be and become immediately due and
        payable without notice or demand, at the option of the holder
        hereof, upon the occurrence of any of the following events:

                  (a)  the failure of the Company to pay any amount due
             hereunder within ten (10) days of the date when due;

                  (b)  any representation, warranty or statement made or
             furnished to the Payee by the Company in connection with
             this Note or the transaction from which it arises shall
             prove to have been false or misleading in any material
             respect as of the date when made or furnished;

                  (c)  the failure of the Company to pay its debts as
             they become due, the insolvency of the Company, the filing
             by or against the Company 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 Company 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
             Company;

                  (d)  the sale by the Company of all or substantially
             all of its assets;

                  (e)  the merger or consolidation of the Company with or
             into any other corporation in a transaction in which the
             Company is not the surviving entity;

                  (f)  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 Company or any liability or obligation of the Company to
             the holder hereof; and

                  (g)  the suspension of the transaction of the usual
             business of the Company.

             Upon surrender of this Note for transfer or exchange, a new
        Note or new Notes of the same tenor dated the date to which
        interest has been paid on the surrendered Note and in an
        aggregate principal amount equal to the unpaid principal amount
        of the Note so surrendered will be issued to, and registered in
        the name of, the transferee or transferees.  The Company may
        treat the person in whose name this Note is registered as the
        owner hereof for the purpose of receiving payment and for all
        other purposes.
                                        2PAGE
<PAGE>
             In case any payment herein provided for shall not be paid
        when due, the Company further promises to pay all cost of
        collection, including all reasonable attorneys' fees.

             No delay or omission on the part of the Payee in exercising
        any right hereunder shall operate as a waiver of such right or of
        any other right of the Payee, 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 Company  
        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 Payee.  

             This Note shall be governed by and construed in accordance
        with, the laws of the Commonwealth of Massachusetts and shall
        have the effect of a sealed instrument.


                                       THERMOSPECTRA CORPORATION



                                        By: 
        __________________________________
                                           Theo Melas-Kyriazi
                                           President

        [Corporate Seal]

        Attest:



        ____________________________
        Sandra L. Lambert
        Secretary




        cc:  Patrice Barnes
             Seth Hoogasian
             Maureen Jacobs
             Sandra Lambert
             Karen Levin
             Andy Pilla
             Gina Silvestri
             Chris Vinchesi


                                                                    Exhibit 11
                            THERMOSPECTRA CORPORATION

                        Computation of Earnings per Share

                                             1996          1995          1994
   --------------------------------------------------------------------------
   Computation of Primary Earnings
     per Share

   Net Income (a)                     $ 6,617,000   $ 4,594,000   $ 2,368,000
                                      -----------   -----------   -----------
   Shares:
     Weighted average shares
       outstanding                     12,436,817    11,229,039     9,383,379

     Add: Shares issuable from assumed
          exercise of options (as
          determined by the
          application of the
          treasury stock method)                -        20,858        83,430
                                      -----------   -----------   -----------
   Weighted average
     shares outstanding,
     as adjusted (b)                   12,436,817    11,249,897     9,466,809
                                      -----------   -----------   -----------
   Primary Earnings per Share
     (a) / (b)                        $       .53   $       .41   $       .25
                                      ===========   ===========   ===========


                                                                   Exhibit 13



















                            THERMOSPECTRA CORPORATION

                        Consolidated Financial Statements

                                      1996
PAGE
<PAGE>
    ThermoSpectra Corporation                       1996 Financial Statements

                        Consolidated Statement of Income

    (In thousands except per share amounts)       1996       1995       1994
    ------------------------------------------------------------------------
    Revenues (Notes 7 and 11)                 $123,199   $ 91,714   $ 42,142
                                              --------   --------   --------
    Costs and Operating Expenses:
      Cost of revenues (Note 7)                 62,900     46,384     21,759
      Selling, general, and administrative
        expenses (Note 7)                       36,493     28,501     12,136
      Research and development
        expenses                                12,910      9,036      4,149
      Other nonrecurring expense, net
        (Note 3)                                   171          -          -
                                              --------   --------   --------
                                               112,474     83,921     38,044
                                              --------   --------   --------

    Operating Income                            10,725      7,793      4,098

    Interest Income                                935        820        226
    Interest Expense, Related Party (Note 7)      (773)      (707)      (114)
                                              --------   --------   --------
    Income Before Provision for Income Taxes    10,887      7,906      4,210
    Provision for Income Taxes (Note 5)          4,270      3,312      1,842
                                              --------   --------   --------
    Net Income                                $  6,617   $  4,594   $  2,368
                                              ========   ========   ========
    Earnings per Share                        $    .53   $    .41   $    .25
                                              ========   ========   ========
    Weighted Average Shares                     12,437     11,250      9,467
                                              ========   ========   ========


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




                                        2PAGE
<PAGE>
    ThermoSpectra Corporation                       1996 Financial Statements

                           Consolidated Balance Sheet

    (In thousands)                                          1996        1995
    ------------------------------------------------------------------------
    Assets
    Current Assets:
      Cash and cash equivalents                         $ 16,580    $ 20,306
      Accounts receivable, less allowances of
        $1,516 and $1,095                                 32,327      23,653
      Inventories                                         27,042      18,272
      Prepaid income taxes (Note 5)                        5,931       4,376
      Other current assets                                 1,722       1,015
                                                        --------    --------
                                                          83,602      67,622
                                                        --------    --------
    Property, Plant, and Equipment, at Cost, Net          20,169      15,348
                                                        --------    --------
    Patents, Trademarks, and Other Assets                  5,556       4,571
                                                        --------    --------
    Equity Investment in Joint Venture                     2,382       2,429
                                                        --------    --------
    Cost in Excess of Net Assets of Acquired
      Companies (Notes 2, 3, and 5)                       40,776      32,947
                                                        --------    --------
                                                        $152,485    $122,917
                                                        ========    ========




                                        3PAGE
<PAGE>
    ThermoSpectra Corporation                       1996 Financial Statements

                     Consolidated Balance Sheet (continued)

    (In thousands except share amounts)                     1996        1995
    ------------------------------------------------------------------------
    Liabilities and Shareholders' Investment
    Current Liabilities:
      Note payable (Note 8)                             $    591    $      -
      Accounts payable                                    11,508       7,719
      Accrued payroll and employee benefits                5,334       3,627
      Accrued installation and warranty expenses           3,396       2,310
      Deferred revenue                                     3,453       2,216
      Accrued income taxes                                 1,792       2,120
      Other accrued expenses (Notes 2 and 3)               9,586      11,368
      Due to affiliated companies                          3,259       2,301
                                                        --------    --------
                                                          38,919      31,661
                                                        --------    --------
    Deferred Income Taxes (Note 5)                           268         178
                                                        --------    --------
    Other Deferred Items                                   1,377       1,253
                                                        --------    --------
    Long-term Obligations, Due to Thermo Instrument
      and Thermo Electron (Note 7)                        22,300       7,300
                                                        --------    --------

    Commitments (Note 6)

    Shareholders' Investment (Notes 4 and 9):
      Common stock, $.01 par value, 25,000,000 shares
        authorized; 12,439,950 and 12,432,000 shares
        issued                                               124         124
      Capital in excess of par value                      77,416      76,955
      Retained earnings                                   12,345       5,728
      Treasury stock at cost, 305 shares                      (5)          -
      Cumulative translation adjustment                     (259)       (282)
                                                        --------    --------
                                                          89,621      82,525
                                                        --------    --------
                                                        $152,485    $122,917
                                                        ========    ========


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



                                        4PAGE
<PAGE>
    ThermoSpectra Corporation                       1996 Financial Statements

                      Consolidated Statement of Cash Flows

    (In thousands)                                1996       1995       1994
    ------------------------------------------------------------------------
    Operating Activities:
      Net income                              $  6,617   $  4,594   $  2,368
      Adjustments to reconcile net income to
        net cash provided by operating
        activities:
          Depreciation and amortization          4,493      3,720      1,273
          Restructuring reserve (Note 3)         1,038          -          -
          Provision for losses on accounts
            receivable                             199        192        375
          Other noncash expenses                   839        430        303
          Deferred income tax (benefit)
            expense                               (796)        75        382
          Changes in current accounts,
            excluding the effects of
            acquisitions:
              Accounts receivable               (3,444)       739        559
              Inventories                       (3,105)    (1,106)       270
              Other current assets                 335       (173)      (223)
              Accounts payable                   2,123     (3,116)      (157)
              Other current liabilities         (2,850)       (34)     1,799
          Other                                    (21)         -        (26)
                                              --------   --------   --------
    Net cash provided by operating activities    5,428      5,321      6,923
                                              --------   --------   --------

    Investing Activities:
      Acquisitions, net of cash acquired
        (Note 2)                               (22,521)   (26,142)    (7,433)
      Refund of acquisition purchase price
        (Note 3)                                 1,103          -          -
      Purchases of available-for-sale
        investments                             (3,000)         -     (4,855)
      Proceeds from sale and maturities of
        available-for-sale investments           3,000      4,855          -
      Purchases of property, plant, and
        equipment                               (2,762)    (1,254)      (584)
      Proceeds from sale of property, plant,
        and equipment                              168        452          -
      Investment in joint venture                    -     (2,017)         -
      Other                                       (733)        34        (98)
                                              --------   --------   --------
    Net cash used in investing activities     $(24,745)  $(24,072)  $(12,970)
                                              --------   --------   --------




                                        5PAGE
<PAGE>
    ThermoSpectra Corporation                       1996 Financial Statements

                Consolidated Statement of Cash Flows (continued)

    (In thousands)                                1996       1995       1994
    ------------------------------------------------------------------------
    Financing Activities:
      Net proceeds from issuance of Company
        common stock (Note 9)                 $     74   $ 24,880   $ 13,993
      Proceeds from issuance of long-term
        obligations to Thermo Instrument and
        Thermo Electron (Note 7)                15,000     15,000      7,300
      Repayment of long-term obligation to
        Thermo Electron                              -    (15,000)         -
      Proceeds from issuance of note
        payable (Note 8)                           552          -          -
      Net transfer to parent company                 -          -       (866)
                                              --------   --------   --------
    Net cash provided by financing activities   15,626     24,880     20,427
                                              --------   --------   --------
    Exchange Rate Effect on Cash                   (35)      (262)        59
                                              --------   --------   --------
    Increase (Decrease) in Cash and Cash
      Equivalents                               (3,726)     5,867     14,439
    Cash and Cash Equivalents at Beginning of
      Year                                      20,306     14,439          -
                                              --------   --------   --------
    Cash and Cash Equivalents at End of Year  $ 16,580   $ 20,306   $ 14,439
                                              ========   ========   ========

    Cash Paid For:
      Interest                                $    774   $    806   $     15
      Income taxes                            $  3,419   $  1,796   $    230

    Noncash Activities:
      Transfer of acquired businesses from
        parent company (Notes 1 and 2)        $      -   $      -   $ 23,255

      Contribution of inventory to joint
        venture                               $      -   $    412   $      -

      Fair value of assets of acquired
        companies                             $ 29,757   $ 47,597   $ 11,138
      Cash paid for acquired companies         (22,525)   (28,098)    (7,433)
                                              --------   --------   --------
        Liabilities assumed of acquired
          companies                           $  7,232   $ 19,499   $  3,705
                                              ========   ========   ========


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


                                        6PAGE
<PAGE>
    ThermoSpectra Corporation                       1996 Financial Statements

               Consolidated Statement of Shareholders' Investment

    (In thousands)                               1996       1995        1994
    ------------------------------------------------------------------------
    Common Stock, $.01 Par Value
      Balance at beginning of year           $    124   $    105    $      -
      Issuance of Company 
        common stock (Note 9)                       -         19          15
      Capitalization of Company                     -          -          90
                                             --------   --------    --------
      Balance at end of year                      124        124         105
                                             --------   --------    --------

    Capital in Excess of Par Value
      Balance at beginning of year             76,955     52,005           -
      Issuance of Company
        common stock (Note 9)                      79     24,861      13,978
      Capitalization of Company                     -          -      38,027
      Tax benefit related to employees'
        and directors' stock plans                382         89           -
                                             --------   --------    --------
      Balance at end of year                   77,416     76,955      52,005
                                             --------   --------    --------

    Retained Earnings
      Balance at beginning of year              5,728      1,134           -
      Net income                                6,617      4,594           -
      Net income after capitalization
        of Company                                  -          -       1,134
                                             --------   --------    --------
      Balance at end of year                   12,345      5,728       1,134
                                             --------   --------     -------

    Treasury Stock
      Balance at beginning of year                  -          -           -
      Purchases of Company common stock            (5)         -           -
                                             --------   --------    --------
      Balance at end of year                       (5)         -           -
                                             --------   --------    --------

    Cumulative Translation Adjustment
      Balance at beginning of year               (282)        69           -
      Translation adjustment                       23       (351)         69
                                             --------   --------    --------
      Balance at end of year                 $   (259)  $   (282)   $     69
                                             --------   --------    --------


                                        7PAGE
<PAGE>
    ThermoSpectra Corporation                       1996 Financial Statements

         Consolidated Statement of Shareholders' Investment (continued)

    (In thousands)                               1996       1995        1994
    ------------------------------------------------------------------------
    Net Parent Company Investment
      Balance at beginning of year           $      -   $      -    $ 14,494
      Net income prior to capitalization
        of Company                                  -          -       1,234
      Net transfer to parent company                -          -        (866)
      Transfer of acquired businesses from
        parent company (Note 2)                     -          -      23,255
      Capitalization of Company                     -          -     (38,117)
                                             --------   --------    --------
      Balance at end of year                        -          -           -
                                             --------   --------    --------
    Total Shareholders' Investment           $ 89,621   $ 82,525    $ 53,313
                                             ========   ========    ========


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







                                        8PAGE
<PAGE>
    ThermoSpectra Corporation                       1996 Financial Statements

                   Notes to Consolidated Financial Statements

    1.  Nature of Operations and Summary of Significant Accounting Policies

    Nature of Operations
        ThermoSpectra Corporation (the Company) develops, manufactures, and
    markets precision imaging, inspection, and measurement instrumentation
    that uses high-speed data acquisition and digital processing technologies
    for industrial and research applications. The Company's products include
    digital signal measurement instruments and imaging and inspection
    systems, representing approximately 45% and 55% of the Company's 1996
    revenues, respectively. The Company's imaging and inspection systems
    include X-ray microanalyzers, X-ray fluorescence instruments, specialty
    X-ray sources, nondestructive X-ray inspection systems, and confocal
    laser scanning microscopes. The Company sells its products on a worldwide
    basis (Note 11). 

    Relationship with Thermo Instrument Systems Inc. and Thermo Electron
    Corporation
        The Company was incorporated in August 1994 as an indirect, wholly
    owned subsidiary of Thermo Instrument Systems Inc. (Thermo Instrument) at
    which time Thermo Instrument transferred to the Company the assets,
    liabilities, and businesses of NORAN Instruments, Inc. (NORAN) (Note 2),
    Nicolet Instrument Technologies Inc. (NIT), and Nicolet Imaging Systems,
    Inc. (NIS) in exchange for 9,000,000 shares of the Company's common
    stock. As of December 28, 1996, Thermo Instrument owned 8,998,936 shares
    of the Company's common stock, representing 72% of such stock
    outstanding. Thermo Instrument is an 82%-owned subsidiary of Thermo
    Electron Corporation (Thermo Electron). As of December 28, 1996, Thermo
    Electron owned 109,153 shares of the Company's common stock, representing
    0.9% 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 1996, 1995, and 1994 are for the fiscal years
    ended December 28, 1996, December 30, 1995, and December 31, 1994,
    respectively.

    Revenue Recognition
        The Company recognizes product revenue upon shipment. The Company
    provides a reserve for its estimate of warranty and installation costs at
    the time of shipment. Deferred revenue in the accompanying balance sheet
    consists of unearned revenue on service contracts, which is recognized as
    revenue over the life of the service contract. Substantially all of the
    deferred revenue included in the accompanying 1996 balance sheet will be
    recognized within one year.

                                        9PAGE
<PAGE>
    ThermoSpectra Corporation                       1996 Financial Statements

                   Notes to Consolidated Financial Statements

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

    Software Development Costs
        In accordance with Statement of Financial Accounting Standards (SFAS)
    No. 86, "Accounting for the Costs of Computer Software to be Sold,
    Leased, or Otherwise Marketed," software development costs are expensed
    as incurred until technological feasibility has been established. The
    Company believes that, under its current process for developing software,
    the software is essentially completed concurrently with the establishment
    of technological feasibility. Accordingly, no software development costs
    have been capitalized.

    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 4). 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.

    Income Taxes
        The Company and Thermo Instrument entered into a tax allocation
    agreement under which both the Company and Thermo Instrument were
    included in Thermo Electron's consolidated federal and certain state
    income tax returns. The agreement provided that, in years that the
    Company had taxable income, the Company would pay to Thermo Instrument
    amounts comparable to the taxes the Company would have paid if it had
    filed separate tax returns. Subsequent to the Company's initial public
    offering in August 1995, Thermo Instrument's equity ownership of the
    Company was reduced below 80% and, as a result, the Company is required
    to file its own federal and certain state income tax returns.
        In accordance with 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
        Earnings per share has been computed based on the weighted average
    number of shares outstanding during the year. Weighted average shares for
    1995 and 1994 include the effect of the assumed exercise of stock options
    issued within one year prior to the Company's initial public offering.
    Because the effect of the assumed exercise of stock options would be
    immaterial, they have been excluded from the calculation of weighted
    average shares subsequent to the Company's initial public offering.

    Cash and Cash Equivalents
        As of December 28, 1996, $11,858,000 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

                                        10PAGE
<PAGE>
    ThermoSpectra Corporation                       1996 Financial Statements

                   Notes to Consolidated Financial Statements

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

    Electron, which Thermo Electron collateralizes with investments
    principally consisting of U.S. government agency securities, corporate
    notes, commercial paper, money market funds, and other marketable
    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. As of December 28, 1996,
    the Company's cash equivalents also included investments in short-term
    certificates of deposit at the Company's foreign operations, which have
    an original maturity of three months or less. Cash equivalents are
    carried at cost, which equals market value.

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

    (In thousands)                                           1996      1995
    -----------------------------------------------------------------------
    Raw materials and supplies                           $12,047    $ 7,973
    Work in process                                        6,941      3,949
    Finished goods                                         8,054      6,350
                                                         -------    -------
                                                         $27,042    $18,272
                                                         =======    =======

    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 method
    over the estimated useful lives of the property as follows: buildings and
    improvements, 5 to 30 years; machinery and equipment, 2 to 10 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)                                           1996      1995
    -----------------------------------------------------------------------
    Land                                                  $ 3,372   $ 1,621
    Buildings                                               7,896     3,687
    Machinery, equipment, and leasehold improvements       16,111    14,188
                                                          -------   -------
                                                           27,379    19,496
    Less: Accumulated depreciation and amortization         7,210     4,148
                                                          -------   -------
                                                          $20,169   $15,348
                                                          =======   =======

                                        11PAGE
<PAGE>
    ThermoSpectra Corporation                       1996 Financial Statements

                   Notes to Consolidated Financial Statements

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

    Patents, Trademarks, and Other Assets
        Patents, trademarks, and other assets in the accompanying balance
    sheet includes the costs of acquired patents and trademarks that are
    amortized using the straight-line method over an estimated useful life of
    3 to 20 years. These assets were $4,695,000 and $4,227,000, net of
    accumulated amortization of $1,473,000 and $953,000, at year-end 1996 and
    1995, respectively.

    Equity Investment in Joint Venture
        The Company uses the equity method to account for its 49% interest in
    a German joint venture. The excess of cost over the Company's underlying
    equity in the net assets of the joint venture of $1,438,000 is amortized
    using the straight-line method over 20 years. Accumulated amortization
    was $54,000 at year-end 1996. 

    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 $2,360,000 and $1,400,000 at year-end 1996
    and 1995, respectively. The Company assesses the future useful life of
    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 occurs, 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 the accompanying statement of income and are
    not material for the three years presented.

    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.

                                        12PAGE
<PAGE>
    ThermoSpectra Corporation                       1996 Financial Statements

                   Notes to Consolidated Financial Statements

    2.  Acquisitions

        On March 29, 1996, Thermo Instrument acquired a substantial portion
    of the businesses comprising the Scientific Instruments Division of
    Fisons plc (Fisons), a wholly owned subsidiary of Rhone-Poulenc Rorer,
    Inc. Pursuant to an agreement executed on August 5, 1996, the Company
    acquired Kevex Instruments and Kevex X-Ray (the Kevex businesses), which
    were formerly part of Fisons, from Thermo Instrument for $21,527,000 in
    cash. To partially finance the acquisition, the Company borrowed
    $15,000,000 from Thermo Electron (Note 7). The purchase price was
    determined based on the net book value of the Kevex businesses at March
    29, 1996, and a pro rata allocation of Thermo Instrument's total cost in
    excess of the net assets of acquired companies recorded in connection
    with the acquisition of the Fisons businesses. The purchase price is
    subject to a post-closing adjustment based on a post-closing adjustment
    to be negotiated with Fisons by Thermo Instrument in connection with the
    negotiations for settlement of the final purchase price for all of the
    businesses of Fisons acquired by Thermo Instrument in March 1996. Kevex
    Instruments is a manufacturer of X-ray microanalyzers and X-ray
    fluorescence instruments and Kevex X-Ray is a manufacturer of specialty
    X-ray sources. 
        Because the Company and the Kevex businesses were deemed for
    accounting purposes to be under control of their common majority owner,
    Thermo Instrument, the August 1996 transaction has been accounted for in
    a manner similar to a pooling of interests. Accordingly, the Company's
    1996 financial statements include the results of the Kevex businesses
    from March 29, 1996, the date these businesses were acquired by Thermo
    Instrument. During 1996, the Company acquired two additional companies
    for an aggregate $900,000 in cash.
        In May 1995, the Company acquired Gould Instrument Systems, Inc.
    (GIS) for $25,758,000 in cash, which included the repayment of $6,000,000
    of bank debt. In 1996, the Company recorded a $1,103,000 reduction in the
    purchase price of GIS (Note 3). To partially finance the acquisition of
    GIS, the Company borrowed $15,000,000 from Thermo Electron pursuant to a
    promissory note that was repaid in August 1995 with proceeds from the
    Company's initial public offering (Note 7). GIS develops, manufactures,
    and sells data acquisition systems, oscillographic recorders, and digital
    storage oscilloscopes (DSOs) for industrial, medical, scientific, and
    government applications. During 1995, the Company acquired one additional
    company for $2,340,000 in cash.
        In September 1994, the Company acquired the assets of IRT Corporation
    (IRT) for $7,268,000 in cash. To finance the acquisition, the Company
    borrowed $7,300,000 from Thermo Instrument pursuant to a promissory note
    (Note 7). IRT is a manufacturer of automated X-ray inspection systems for
    discrete manufacturing processes, including the examination of printed
    circuit boards for solder joint integrity and the placement of  
    components.
        In March 1994, Thermo Instrument acquired substantially all the
    assets, subject to certain liabilities, of NORAN as part of its
    acquisition of several businesses within the EnviroTech Measurements &
    Controls group of Baker Hughes Incorporated. NORAN designs, manufactures,
    and distributes X-ray microanalyzers and confocal laser scanning 

                                        13PAGE
<PAGE>
    ThermoSpectra Corporation                       1996 Financial Statements

                   Notes to Consolidated Financial Statements

    2.  Acquisitions (continued)

    microscopes. In January 1994, Thermo Instrument acquired the outstanding
    capital stock of Imaging Systems International, Inc. (ISI), a
    manufacturer of manual X-ray inspection instrumentation. Subsequent to
    the acquisition, ISI's name was changed to Nicolet Imaging Systems (NIS).
    In connection with the Company's incorporation in August 1994, Thermo
    Instrument contributed NIS and NORAN to the Company.
        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 by the Company or by Thermo Instrument. The aggregate cost of
    these acquisitions exceeded the estimated fair value of the acquired net
    assets by $38,042,000, which is being amortized over 40 years. Allocation
    of the purchase price for these acquisitions was based on estimates of
    the fair value of the net assets acquired and, for businesses acquired in
    1996, is subject to adjustment upon finalization of the purchase price
    allocation.
        Based on unaudited data, the following table presents selected
    financial information for the Company, the Kevex businesses, GIS, IRT,
    and NORAN on a pro forma basis, assuming that the Company and the Kevex
    businesses had been combined since the beginning of 1995 and the Company,
    GIS, IRT, and NORAN had been combined since the beginning of 1994. The
    Company's other acquisitions were not material to the Company's results
    of operations and financial position.

    (In thousands except per share amounts)      1996       1995       1994
    -----------------------------------------------------------------------
    Revenues                                 $129,190   $138,876   $107,770
    Net income (loss)                           4,548      2,259     (9,099)
    Earnings (loss) per share                     .37        .20       (.96)

        The pro forma results are not necessarily indicative of future
    operations or the actual results that would have occurred had the
    acquisition of the Kevex businesses been made at the beginning of 1995,
    or the acquisitions of GIS, IRT, and NORAN been made at the beginning of
    1994.
        In connection with the acquisition of GIS, the Company established
    reserves totaling $2,650,000 for estimated severance, relocation, and
    exit costs, of which $1,212,000 and $1,147,000 were expended during 1996
    and 1995, respectively. Other accrued expenses in the accompanying
    balance sheet includes reserves of $1,127,000 and $1,937,000 at year-end
    1996 and 1995, respectively, for estimated severance, relocation, and
    exit costs associated with acquired companies, including $291,000 for
    remaining exit costs at GIS to be paid in 1997. 

                                        14PAGE
<PAGE>
    ThermoSpectra Corporation                       1996 Financial Statements

                   Notes to Consolidated Financial Statements

    3.  Other Nonrecurring Expense, Net

        In 1996, the Company finalized negotiations in connection with
    amounts claimed for the discontinuance of the Acqulab product line, which
    was sold to the Company as part of the purchase of GIS. Of the $1,970,000
    settlement received, $1,103,000 was related to a reduction of the
    purchase price principally for the unrealized earning potential of the
    Acqulab product line and $867,000 was related to a reimbursement of
    expenses incurred subsequent to the acquisition of GIS for the ongoing
    development of Acqulab.
        In 1996, the Company's GIS subsidiary commenced a $1,038,000
    restructuring plan, which included the termination of approximately 40
    employees. 
        The Company recorded the $867,000 reimbursement and the $1,038,000
    restructuring reserve as "Other nonrecurring expense, net" in the
    accompanying 1996 statement of income. The remaining $1,103,000 received
    under the settlement agreement was recorded as an adjustment to the
    purchase price paid for GIS, resulting in a reduction of "Cost in excess
    of net assets of acquired companies" in the accompanying 1996 balance
    sheet. "Other accrued expenses" in the accompanying 1996 balance sheet
    includes a remaining reserve of $790,000 associated with the staff
    reductions described above.

    4.  Employee Benefit Plans

    Stock-based Compensation Plans

    Stock Option Plans
    ------------------
        The Company has 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.
    Generally, options granted to date are exercisable immediately, but 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 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 1994, that
    provides for the grant of stock options to outside directors pursuant to
    a formula approved by the Company's shareholders. Options granted to date
    under this plan have the same general terms as options granted to date
    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 the
                                        15PAGE
<PAGE>
    ThermoSpectra Corporation                       1996 Financial Statements

                   Notes to Consolidated Financial Statements

    4.  Employee Benefit Plans (continued)

    Company's stock-based compensation plans, certain officers and key
    employees may also participate in the stock-based compensation plans of
    Thermo Electron and Thermo Instrument.

    Employee Stock Purchase Program
    -------------------------------
        Effective November 1, 1996, substantially all of the Company's
    full-time U.S. employees are eligible to participate in an employee stock
    purchase program sponsored by the Company and Thermo Electron, under
    which employees can purchase shares of the Company's and Thermo
    Electron's common stock. Prior to November 1, 1996, the program was
    sponsored by Thermo Instrument 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 1996 and 1995 under the Company's
    stock-based compensation plans been determined based on the fair value at
    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)                 1996      1995
    ----------------------------------------------------------------------
    Net income:
      As reported                                         $6,617    $4,594
      Pro forma                                            6,277     4,475
    Earnings per share:
      As reported                                            .53       .41
      Pro forma                                              .50       .40

        Because the method prescribed by SFAS No. 123 has not been applied to
    options granted prior to January 1, 1995, the resulting pro forma
    compensation expense may not be representative of the amount to be
    expected in future years. 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.

                                        16PAGE
<PAGE>
    ThermoSpectra Corporation                       1996 Financial Statements

                   Notes to Consolidated Financial Statements

    4.  Employee Benefit Plans (continued)

        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:

                                                          1996          1995
    ------------------------------------------------------------------------
    Volatility                                             26%            26%
    Risk-free interest rate                               6.6%           6.4%
    Expected life of options                         5.4 years      6.7 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.




                                        17PAGE
<PAGE>
   ThermoSpectra Corporation                         1996 Financial Statements

                   Notes to Consolidated Financial Statements

   4.   Employee Benefit Plans (continued)

   Stock Option Activity
        A summary of the Company's stock option activity is as follows:

                               1996              1995              1994
                         ----------------  ---------------- ----------------
                                 Weighted          Weighted
                         Number   Average  Number   Average Number
                             of  Exercise      of  Exercise     of  Exercise
   (Shares in thousands) Shares     Price  Shares     Price Shares     Price
   -------------------------------------------------------------------------
   Options outstanding,
     beginning of year     862    $11.32      578    $10.00      -   $    - 

       Granted             183     15.26      315     13.68    578    10.00
       Exercised            (8)    10.00        -         -      -        -
       Forfeited           (66)    10.89      (31)    10.75      -
                        ------    ------    -----    ------  -----   ------
                                                                     -
   Options outstanding,
     end of year           971    $12.10      862    $11.32    578   $10.00
                        ======    ======    =====    ======  =====   ======
   Options exercisable     971    $12.10      862    $11.32      -   $    -
                        ======    ======    =====    ======  =====   ======
   Options available
     for grant             121                238              522
                        ======              =====            =====
   Weighted average fair
     value per share of
     options granted
     during year                  $ 5.80             $ 5.93
                                  ======             ======

        As of December 28, 1996, the options outstanding were exercisable at
   prices ranging from $10.00 to $17.15 and had a weighted-average remaining
   contractual life of 8.6 years.

   401(k) Savings Plans
        Substantially all of the Company's full-time U.S. employees are
   eligible to participate in either Thermo Electron's or Nicolet Instrument
   Corporation's (Nicolet) 401(k) savings plan. Nicolet is a wholly owned
   subsidiary of Thermo Instrument. Contributions to the 401(k) savings plans
   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 $689,000, $493,000, and $250,000
   in 1996, 1995, and 1994, respectively.


                                        18PAGE
<PAGE>
    ThermoSpectra Corporation                       1996 Financial Statements

                   Notes to Consolidated Financial Statements

    5.   Income Taxes

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

    (In thousands)                                1996      1995     1994
    ---------------------------------------------------------------------
    Domestic                                   $ 8,969   $ 5,835  $ 3,154
    Foreign                                      1,918     2,071    1,056
                                               -------   -------  -------
                                               $10,887   $ 7,906  $ 4,210
                                               =======   =======  =======

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

    (In thousands)                                1996      1995     1994
    ---------------------------------------------------------------------
    Currently payable:
      Federal                                  $ 3,427   $ 1,651  $   727
      State                                        774       349      262
      Foreign                                      865     1,237      471
                                               -------   -------  -------
                                                 5,066     3,237    1,460
                                               -------   -------  -------
    Net deferred (prepaid):
      Federal                                     (608)      125      270
      State                                       (129)       27      112
      Foreign                                      (59)      (77)       -
                                               -------   -------  -------
                                                  (796)       75      382
                                               -------   -------  -------
                                               $ 4,270   $ 3,312  $ 1,842
                                               =======   =======  =======

         The provision for income taxes that is currently payable does not
    reflect $1,024,000 of tax benefits used to reduce cost in excess of net
    assets of acquired companies in 1996.
         In addition, the Company receives a tax deduction upon exercise of
    nonqualified stock options by employees for the difference between the
    exercise price and the market price of the underlying common stock on the
    date of exercise. The provision for income taxes that is currently
    payable does not reflect $382,000 and $89,000 of such benefits that have
    been allocated to capital in excess of par value in 1996 and 1995,
    respectively.


                                        19PAGE
<PAGE>
    ThermoSpectra Corporation                       1996 Financial Statements

                   Notes to Consolidated Financial Statements

    5.  Income Taxes (continued)

        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 34% to income before provision for income
    taxes due to the following:

    (In thousands)                                 1996      1995      1994
    -----------------------------------------------------------------------
    Provision for income taxes at
      statutory rate                            $ 3,702   $ 2,688   $ 1,431
    Increases (decreases) resulting from:
      State income taxes, net of federal tax        426       248       247
      Net foreign losses not benefited and
        tax rate differential                       154       456       112
      Tax benefit of foreign sales
        corporation                                (268)     (201)     (178)
      Amortization of cost in excess of
        net assets of acquired companies            146       155        85
      Other, net                                    110       (34)      145
                                                -------   -------    ------
                                                $ 4,270   $ 3,312   $ 1,842
                                                =======   =======   =======

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

    (In thousands)                                 1996      1995
    -------------------------------------------------------------
    Prepaid income taxes:
      Tax loss carryforwards                    $ 9,334   $ 8,714
      Reserves and accruals                       3,726     2,203
      Inventory basis difference                  1,983     1,495
      Allowance for doubtful accounts               222       191
      Depreciation                                    -       487
                                                -------   -------
                                                 15,265    13,090
      Less: Valuation allowance                   9,334     8,714
                                                -------   -------
                                                $ 5,931   $ 4,376
                                                =======   =======
    Deferred income taxes:
      Intangible assets                         $   176   $    47
      Other                                          92       131
                                                -------   -------
                                                $   268   $   178
                                                =======   =======


                                        20PAGE
<PAGE>
    ThermoSpectra Corporation                       1996 Financial Statements

                   Notes to Consolidated Financial Statements

    5.  Income Taxes (continued)

        At year-end 1996, the Company had foreign and federal tax loss
    carryforwards of $21,128,000 and $6,405,000, respectively. The valuation
    allowance relates to uncertainty surrounding the realization of the
    carryforwards, for which realization is limited to the future income of
    certain subsidiaries. The federal tax loss carryforwards expire in the
    years 2008 through 2010. The foreign tax loss carryforwards do not
    expire. Any resulting benefit from the loss carryforwards will first be
    used to reduce "Cost in excess of net assets of acquired companies," with
    any remaining benefit used to reduce other acquired intangible assets.
        A provision has not been made for U.S. or additional foreign taxes on
    $4,000,000 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.

    6.  Commitments

        The Company leases portions of its office and operating facilities
    under various operating lease arrangements. The accompanying statement of
    income includes expenses from operating leases of $2,818,000, $2,066,000,
    and $688,000 in 1996, 1995, and 1994, respectively, net of sublease
    income of $185,000 in 1996. Future minimum payments due under
    noncancelable operating leases at December 28, 1996, were $2,277,000 in
    1997; $1,795,000 in 1998; $1,408,000 in 1999; $1,298,000 in 2000;
    $1,205,000 in 2001; and $3,463,000 in 2002 and thereafter. Total future
    minimum lease payments are $11,446,000 and have not been reduced by
    minimum sublease rental income of $2,483,000 due through 2001 under
    noncancelable operating subleases. See Note 7 for office and
    manufacturing space leased from a related party.

    7.  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
    financial and other services, for which the Company pays Thermo Electron
    annually an amount equal to 1.0% of the Company's revenues. The Company
    paid an annual fee equal to 1.20% and 1.25% of the Company's revenues in
    fiscal 1995 and 1994, respectively. The annual fee is reviewed and
    adjusted annually by mutual agreement of the parties. For these services,
    the Company was charged $1,232,000, $1,101,000, and $527,000, in 1996,
    1995, and 1994, respectively. 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

                                        21PAGE
<PAGE>
    ThermoSpectra Corporation                       1996 Financial Statements

                   Notes to Consolidated Financial Statements

    7.  Related Party Transactions (continued)

    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.

    Operating Leases
        The Company leases certain office and manufacturing space from
    Nicolet. Effective January 1, 1996, the annual rent expense is $208,000.
    Prior to January 1, 1996, rent expense was determined as the Company's
    allocated share of total occupancy expenses. The accompanying statement
    of income includes expenses from this operating lease of $208,000,
    $218,000, and $257,000 in 1996, 1995, and 1994, respectively. This lease
    is effective until December 31, 1998, but may be terminated by the
    Company upon 90 days' prior notice to Nicolet.

    Other Related Party Transactions
        The Company purchases and sells products and services in the ordinary
    course of business with other companies affiliated with Thermo Electron.
    Sales of products to such affiliated companies totaled $240,000,
    $118,000, and $57,000, in 1996, 1995, and 1994, respectively. Purchases
    of products and services from such affiliated companies totaled
    $1,310,000, $1,090,000, and $1,872,000 in 1996, 1995, and 1994,
    respectively.

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

    Long-term Obligations
        The Company borrowed funds from Thermo Instrument and Thermo Electron
    to finance the acquisitions of certain companies (Note 2). In connection
    with the 1996 acquisition of the Kevex businesses, the Company borrowed
    $15,000,000 from Thermo Electron pursuant to a promissory note due August
    1998. To finance the acquisition of GIS in May 1995, the Company borrowed
    $15,000,000 from Thermo Electron pursuant to a promissory note that was
    repaid in August 1995 with proceeds from the Company's initial public
    offering (Note 9). To finance the acquisition of IRT in 1994, the Company
    borrowed $7,300,000 from Thermo Instrument pursuant to a promissory note
    due September 2001.
        These notes bear interest at the 90-day Commercial Paper Composite
    Rate plus 25 basis points, set at the beginning of each quarter. The
    interest rate for the notes outstanding at year-end 1996 and 1995 was
    5.77% and 6.01%, respectively.

                                        22PAGE
<PAGE>
    ThermoSpectra Corporation                       1996 Financial Statements

                   Notes to Consolidated Financial Statements

    8.  Note Payable

        Note payable in the accompanying balance sheet at December 28, 1996,
    represents borrowings under a 1.2 million British pounds sterling line of
    credit facility. The interest rate for this line of credit was 7.0% at
    December 28, 1996.

    9.  Common Stock

        In 1995, the Company sold 1,725,000 shares of its common stock in its
    initial public offering at $14.00 per share for net proceeds of
    $21,858,000, and the Company sold an additional 202,000 shares of its
    common stock in a private placement at $15.72 per share for net proceeds
    of $3,022,000.
        In 1994, the Company sold 1,505,000 shares of its common stock in
    private placements at $10.00 per share for net proceeds of $13,993,000.
        At December 28, 1996, the Company had reserved 1,267,000 unissued
    shares of its common stock for possible issuance under stock-based
    compensation plans.

    10.  Fair Value of Financial Instruments

         The Company's financial instruments consist primarily of cash and
    cash equivalents, accounts receivable, note payable, accounts payable,
    due to affiliated companies, long-term obligations due to Thermo
    Instrument and Thermo Electron, and forward exchange contracts. The
    Company's long-term obligations (Note 7) bear interest at a variable
    market rate and therefore the carrying amounts approximate fair value.
    The carrying amounts of the Company's remaining financial instruments,
    with the exception of forward exchange contracts, approximate fair value
    due to their short-term nature. 
         The Company enters into forward exchange contracts to hedge certain
    firm purchase and sale commitments denominated in currencies other than
    its subsidiaries' local currencies, principally U.S. dollars, Japanese
    yen, German Deutsche marks, and British pounds sterling. The purpose of
    the Company's foreign currency hedging activities is to protect the
    Company's local currency cash flows related to these commitments from
    fluctuations in foreign exchange rates. The amounts of such forward
    exchange contracts at year-end 1996 and 1995 were $2,185,000 and
    $3,337,000, respectively. The fair value of the Company's forward
    exchange contracts receivable was $138,000 and $24,000 at year-end 1996
    and 1995, respectively. The fair value of forward exchange contracts is
    the estimated amount that the Company would receive upon termination of
    the contract, taking into account the change in foreign exchange rates.

                                        23PAGE
<PAGE>
    ThermoSpectra Corporation                       1996 Financial Statements

                   Notes to Consolidated Financial Statements

    11. Geographical Information

        The Company is engaged in one business segment: developing,
    manufacturing, and marketing precision imaging, inspection, and
    measurement instrumentation. The following table shows data for the
    Company by geographical area:

    (In thousands)                                1996       1995      1994
    -----------------------------------------------------------------------
    Revenues:
     United States                            $ 94,493   $ 63,675  $ 33,372
     Germany                                    14,673     12,952     4,551
     England                                    14,260     12,759     3,327
     Other Europe                               13,698     14,545     4,653
     Other                                       5,593      3,609     1,726
     Transfers among geographical areas (a)    (19,518)   (15,826)   (5,487)
                                              --------   --------  --------
                                              $123,199   $ 91,714  $ 42,142
                                              ========   ========  ========
    Income before provision for income taxes:
     United States (b)                        $  9,072   $  5,586  $  3,527
     Germany                                       867        975       764
     England                                       253        (70)      361
     Other Europe                                  697      1,297       (69)
     Other                                        (164)         5      (485)
                                              --------   --------  --------
     Total operating income                     10,725      7,793     4,098
     Interest income, net                          162        113       112
                                              --------   --------  --------
                                              $ 10,887   $  7,906  $  4,210
                                              ========   ========  ========
    Identifiable assets:
     United States                            $121,891   $ 89,951  $ 69,628
     Germany                                     8,968      8,881     3,492
     England                                     9,142      9,707     1,595
     Other Europe                               10,210     13,060     2,783
     Other                                       2,274      1,318     1,203
                                              --------   --------  --------
                                              $152,485   $122,917  $ 78,701
                                              ========   ========  ========
    Export revenues included in United States
      revenues above (c):
      Asia                                    $ 19,102   $  8,195  $  5,446
     Europe                                     13,300     13,003     6,437
     Other                                       4,070      5,400     2,050
                                              --------   --------  --------
                                              $ 36,472   $ 26,598  $ 13,933
                                              ========   ========  ========

    (a)Transfers among geographical areas are accounted for at prices that
        are representative of transactions with unaffiliated parties.
    (b)Includes corporate general and administrative expenses.
    (c)In general, export sales are denominated in U.S. dollars.

                                        24PAGE
<PAGE>
    ThermoSpectra Corporation                       1996 Financial Statements

                   Notes to Consolidated Financial Statements

    12. Unaudited Quarterly Information

    (In thousands except per share amounts)

    1996                        First       Second(a)     Third      Fourth
    -----------------------------------------------------------------------
    Revenues                  $26,927      $31,281      $30,329     $34,662
    Gross profit               12,788       15,080       15,092      17,339
    Net income                  1,436        1,562        1,690       1,929
    Earnings per share            .12          .13          .14         .16

    1995                        First       Second(b)     Third      Fourth
    -----------------------------------------------------------------------
    Revenues                  $14,449      $22,193      $26,605     $28,467
    Gross profit                7,308       10,772       13,005      14,245
    Net income                    912        1,033        1,217       1,432
    Earnings per share            .09          .10          .11         .12

    (a) Includes the results of Kevex Instruments and Kevex X-Ray since their
        acquisition by Thermo Instrument in March 1996.
    (b) Reflects the acquisition of GIS in May 1995.

    13. Subsequent Event

        On March 12, 1997, the Company acquired Park Scientific Instruments
    Corporation (PSI), a manufacturer of scanning probe microscopes used in
    industry and academia to test and measure the topography and other
    surface properties of materials, for $16,913,000 in cash, including the
    repayment of $1,300,000 of bank debt. The purchase price is subject to a
    post-closing adjustment based on the acquired net assets of PSI. In
    addition, the Company assumed outstanding PSI stock options that are
    exercisable into 183,940 shares of Company common stock at a weighted
    average exercise price of $3.44 per share, with an aggregate value of
    $2,080,000 as of the date of the merger agreement. In connection with the
    acquisition of PSI, the Company borrowed $10,000,000 from Thermo Electron
    pursuant to a promissory note due March 1999 and bearing interest at the
    90-day Commercial Paper Composite Rate plus 25 basis points, set at the
    beginning of each quarter.

                                        25PAGE
<PAGE>
    ThermoSpectra Corporation                       1996 Financial Statements

                    Report of Independent Public Accountants

    To the Shareholders and Board of Directors of ThermoSpectra Corporation:

        We have audited the accompanying consolidated balance sheet of
    ThermoSpectra Corporation (a Delaware corporation and 72%-owned
    subsidiary of Thermo Instrument Systems Inc.) and subsidiaries as of
    December 28, 1996, and December 30, 1995, and the related consolidated
    statements of income, shareholders' investment, and cash flows for each
    of the three years in the period ended December 28, 1996. 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
    ThermoSpectra Corporation and subsidiaries as of December 28, 1996, and
    December 30, 1995, and the results of their operations and their cash
    flows for each of the three years in the period ended December 28, 1996,
    in conformity with generally accepted accounting principles.



                                                Arthur Andersen LLP



    Boston, Massachusetts
    February 11, 1997 (except
    with respect to certain
    matters discussed in
    Note 13, as to which the
    date is March 12, 1997)





                                       26PAGE
<PAGE>
    ThermoSpectra Corporation                       1996 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
    caption "Forward-looking Statements."

    Overview

        The Company develops, manufactures, and markets precision imaging,
    inspection, and measurement instruments based on high-speed data
    acquisition and digital processing technologies. These instruments are
    generally combined with proprietary operations and analysis software to
    provide industrial and research customers with integrated systems that
    address their specific needs. The Company's products include digital
    signal measurement systems, consisting of digital oscillographic
    recorders that continuously measure and monitor signals from various
    sensors, digital storage oscilloscopes (DSOs) that are capable of taking
    hundreds of millions of measurements per second of repetitive or
    transient signals, and data acquisition systems that combine the
    attributes of DSOs and digital oscillographic recorders; X-ray
    microanalyzers used as accessories to electron microscopes to provide
    elemental materials analysis as a supplement to the microscope's imaging
    capabilities; nondestructive X-ray inspection systems for process
    monitoring and quality control applications; X-ray fluorescence
    instruments for bulk and selected area sample analysis; specialty X-ray
    tubes for industrial and medical applications; confocal laser scanning
    microscopes that use laser light to generate precise optical images
    primarily for life-science applications; and, with the March 1997
    acquisition of Park Scientific Instruments Corporation (PSI), scanning
    probe microscopes that test and measure the topography and other surface
    properties of materials down to the atomic level (Note 13).
        The Company's growth strategy includes acquiring complementary
    businesses, developing new applications for its technology to address
    related market segments, and strengthening its presence in selected
    geographic markets. Acquisitions the Company has made have generally been
    businesses with strong technologies and a good reputation and presence in
    the markets in which they compete, but often relatively poor
    profitability because of high manufacturing and operating expenses. The
    Company's goal is to reduce these expenses and thereby improve the
    acquired companies' profitability. Businesses the Company may acquire in
    the future may have these same financial characteristics. To realize an
    attractive return on its investment in such future acquisitions, the
    Company will need to successfully reduce those acquired companies'
    expenses. Because the Company competes primarily on the basis of its

                                        27PAGE
<PAGE>
    ThermoSpectra Corporation                       1996 Financial Statements

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

    Overview (continued)

    technology, it will also need to continually improve the technology
    underlying the products of any company it acquires.
        The Company conducts all of its manufacturing operations in the
    United States, except for the production of certain DSOs that are
    manufactured in England. The Company sells its products on a worldwide
    basis. The Company anticipates that a majority of its revenues will be
    from sales to customers outside the United States. The Company's business
    activities outside the United States are conducted through sales and
    service subsidiaries and through third-party representatives and
    distributors. The results of the Company's international operations are
    subject to foreign currency fluctuations, and the exchange rate value of
    the dollar may have a significant impact on both revenues and earnings.
    The Company may use forward contracts to reduce its exposure to currency
    fluctuations.

    Results of Operations

    1996 Compared With 1995
        Revenues were $123.2 million in 1996, compared with $91.7 million in
    1995, an increase of 34%. Revenues increased due to the inclusion of
    $18.0 million of revenues from the acquisition of Kevex Instruments, a
    manufacturer of X-ray microanalyzers and X-ray fluorescence instruments,
    and Kevex X-Ray, a manufacturer of specialty X-ray sources (the Kevex
    businesses); and $9.6 million of incremental revenues from the Company's
    Gould Instrument Systems, Inc. (GIS) subsidiary, a manufacturer of
    digital signal measurement systems, acquired in May 1995 (Note 2).
    Revenues at GIS for the last six months of 1996 declined by approximately
    14% from the comparable period in 1995, due to a decrease in demand for
    GIS products. Revenues from the Company's other operations increased
    approximately 9% in 1996, compared with 1995, due to the inclusion of
    $2.3 million of revenues related to shipments of airbag inspection
    systems and an overall higher demand for X-ray inspection systems at the
    Company's Nicolet Imaging Systems (NIS) division, and increased demand
    for products sold by the Company's NORAN Instruments Inc. (NORAN)
    subsidiary, a manufacturer of X-Ray microanalyzers and confocal laser
    scanning microscopes. Revenues were negatively affected by approximately
    $1.6 million in 1996 due to the strengthening in the value of the U.S.
    dollar relative to the Japanese yen and other foreign currencies in
    countries where the Company operates.
        The Company's gross profit margin was 49% in both 1996 and 1995.
    Higher gross profit margins at Nicolet Instrument Technologies Inc.
    (NIT), a manufacturer of digital signal measurement systems, and GIS due
    to changes in product mix and manufacturing efficiencies were offset by a
    lower gross profit margin at NIS due to higher material costs and the
    inclusion of lower-margin revenues from airbag inspection systems, the
    inclusion of revenues from the Kevex businesses which had a combined
    gross profit margin of 42%, and the strengthening in the value of the
    U.S. dollar.

                                       28PAGE
<PAGE>
    ThermoSpectra Corporation                       1996 Financial Statements

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

    1996 Compared With 1995 (continued)
        Selling, general, and administrative expenses as a percentage of
    revenues decreased to 30% in 1996 from 31% in 1995 due to the inclusion
    of lower selling expenses as a percentage of revenues at Kevex X-Ray.
    Research and development expenses as a percentage of revenues were
    unchanged at 10% in both 1996 and 1995.
        Other nonrecurring expense, net, represents a $1.0 million
    restructuring reserve recorded at GIS offset in part by $0.9 million, of
    a $2.0 million settlement, for costs incurred by GIS in connection with
    its Acqulab product line (Note 3).
        Interest income increased to $0.9 million in 1996 from $0.8 million
    in 1995, principally due to overall higher cash balances in 1996.
    Interest expense, related party in 1996 represents interest expense
    associated with a $7.3 million promissory note issued to Thermo
    Instrument Systems Inc. (Thermo Instrument) in September 1994 and a $15.0
    million promissory note issued to Thermo Electron Corporation (Thermo
    Electron) in August 1996 (Note 7). Interest expense, related party in
    1995 represents interest expense associated with the $7.3 million
    promissory note issued to Thermo Instrument and a $15.0 million
    promissory note issued to Thermo Electron in May 1995. The $15.0 million
    promissory note issued in May 1995 was repaid in August 1995. 
        The effective tax rate decreased to 39% in 1996 from 42% in 1995.
    These rates exceed the statutory federal income tax rate primarily due to
    the impact of state and foreign income taxes and the nondeductible
    amortization of cost in excess of net assets of acquired companies for
    certain of the Company's acquisitions. The effective tax rate decreased
    in 1996 principally as a result of a lower percentage of the Company's
    income generated in countries with higher tax rates.

    1995 Compared With 1994
        Revenues were $91.7 million in 1995, compared with $42.1 million in
    1994, an increase of 118%. Revenues increased $47.5 million due to the
    inclusion of revenues from acquired companies from their respective dates
    of acquisition (Note 2). Revenues increased by approximately $1.5 million
    in 1995 due to the decline in the value of the U.S. dollar relative to
    foreign currencies in countries where the Company operates, while
    revenues from existing businesses remained relatively constant.
        The gross profit margin increased to 49% in 1995 from 48% in 1994.
    Higher gross profit margins at existing businesses resulting principally
    from shifts in product mixes and reduced manufacturing costs were offset
    in part by the inclusion of lower-margin revenues at GIS.
        Selling, general, and administrative expenses as a percentage of
    revenues increased to 31% in 1995 from 29% in 1994, primarily due to
    increased marketing efforts at the Company's existing operations and
    higher selling, general, and administrative expenses as a percentage of
    revenues at GIS. Research and development expenses as a percentage of
    revenues were unchanged at 10% in both 1995 and 1994.
        Interest income of $0.8 million in 1995 primarily represents interest
    earned on increased cash balances as a result of the Company's 1995 and
    1994 private placements and 1995 initial public offering (Note 9), offset
    in part by the cash expended to acquire GIS (Note 2). Interest income of
    $0.2 million in 1994 represents interest earned on the net proceeds from

                                       29PAGE
<PAGE>
    ThermoSpectra Corporation                       1996 Financial Statements

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

    1995 Compared With 1994 (continued)
    the Company's 1994 private placements. Interest expense, related party of
    $0.7 million in 1995 and $0.1 million in 1994 represents interest expense
    associated with the promissory notes issued in 1994 to Thermo Instrument
    and Thermo Electron as discussed in the results of operations for 1996
    compared with 1995.
        The effective tax rate decreased to 42% in 1995 from 44% in 1994.
    These rates exceed the statutory federal income tax rate due primarily to
    the impact of state income taxes, the nondeductible amortization of cost
    in excess of net assets of acquired companies for certain of the
    Company's acquisitions, and in 1994, the inability to provide a tax
    benefit on losses incurred at certain foreign subsidiaries. The effective
    tax rate decreased in 1995 principally as a result of lower nondeductible
    expenses as a percentage of income before income taxes.

    Liquidity and Capital Resources

        Consolidated working capital was $44.7 million at December 28, 1996,
    compared with $36.0 million at December 30, 1995, an increase of $8.7
    million. Included in working capital are cash and cash equivalents of
    $16.6 million at year-end 1996, compared with $20.3 million at year-end
    1995. Net cash provided by operating activities was $5.4 million in 1996.
    During 1996, the Company used cash of $3.4 million and $3.1 million to
    fund increases in accounts receivable and inventories, respectively.
        Pursuant to an agreement executed on August 5, 1996, the Company
    acquired the Kevex businesses from Thermo Instrument (Note 2) for $21.5
    million in cash, subject to a post-closing adjustment based on a
    post-closing adjustment to be negotiated with Fisons by Thermo Instrument
    in connection with the negotiations for the settlement of the final
    purchase price for all of the businesses of Fisons acquired by Thermo
    Instrument in March 1996. In connection with the acquisition of the Kevex
    businesses from Thermo Instrument, the Company borrowed $15.0 million
    from Thermo Electron pursuant to a promissory note due August 1998 and
    bearing interest at the 90-day Commercial Paper Composite Rate plus 25
    basis points, set at the beginning of each quarter.
        During the third quarter of 1996, the Company received a $2.0 million
    settlement in connection with the acquisition of GIS (Note 3). Of the
    $2.0 million settlement received, $1.1 million was recorded as a
    reduction in the purchase price of GIS and $0.9 million represented
    reimbursement of post-acquisition expenses incurred by GIS in connection
    with its Acqulab product line and was included in the accompanying
    statement of income.
        During 1996, the Company expended $2.8 million for the purchase of
    property, plant, and equipment, including $1.3 million for the purchase
    of a building that was previously leased by NIS. The Company plans to
    expend approximately $2.7 million for the purchase of property, plant,
    and equipment in 1997.
        On March 12, 1997, the Company acquired PSI, a manufacturer of
    scanning probe microscopes used in industry and academia to test and
    measure the topography and other surface properties of materials, for
    $16.9 million in cash, including the repayment of $1.3 million of bank
    debt, subject to a post-closing adjustment. In addition, the Company

                                       30PAGE
<PAGE>
    ThermoSpectra Corporation                       1996 Financial Statements

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

    Liquidity and Capital Resources (continued)

    assumed outstanding PSI stock options that are exercisable into 183,940
    shares of Company common stock at a weighted average exercise price of
    $3.44 per share, with an aggregate value of approximately $2.1 million as
    of the date of the merger agreement. In connection with the acquisition
    of PSI, the Company borrowed $10.0 million from Thermo Electron pursuant
    to a promissory note due March 1999 and bearing interest at the 90-day
    Commercial Paper Composite Rate plus 25 basis points, set at the
    beginning of each quarter.
        Although the Company expects to generate positive cash flow from its
    existing operations, the Company anticipates that it may require
    significant amounts of cash to pursue the acquisition of complementary
    businesses. The Company expects that it would seek to finance any such
    acquisitions through a combination of internal funds, additional equity
    financing or convertible debt financing from the capital markets and/or
    short-term borrowings from Thermo Instrument or Thermo Electron, although
    it has no agreement with these companies to ensure that funds will be
    available on acceptable items or at all. The Company believes that its
    existing resources and cash provided by operations are sufficient to meet
    the capital requirements of its existing businesses for the foreseeable
    future.






                                       31PAGE
<PAGE>
    ThermoSpectra Corporation                       1996 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 1997 and beyond to differ
    materially from those expressed in any forward-looking statements made
    by, or on behalf of, the Company.
        Uncertainty of Growth. Certain of the markets in which the Company
    competes have been flat or declining over the past several years. The
    Company has identified a number of strategies it believes will allow it
    to grow its business, including: acquiring complementary businesses,
    developing new applications for its technologies, and strengthening its
    presence in selected geographic markets. No assurance can be given that
    the Company will be able to successfully implement these strategies, or
    that these strategies will result in growth of the Company's business.
        Potential Increased Competition. The Company predominantly sells its
    products in the high-performance segment of the markets in which it
    competes. The products in this segment are generally characterized by
    superior engineering and performance and compete more on product
    specifications than on price. The other segments of these markets are
    dominated by companies with substantially greater financial resources
    than those of the Company. If these larger companies enter the
    high-performance segment of the market, no assurance can be given that
    the Company will be able to successfully compete against them.
        Need to Respond to Technological Change. Many of the Company's
    products are primarily marketed based on their technologies. In order to
    be successful, the Company believes that it will be important to
    continually improve the technology underlying its products. No assurance
    can be given that the Company will be able to do so or that a competitor
    of the Company will not develop technology or products that will render
    the Company's competing products noncompetitive or obsolete.
        Risks Associated with Acquisition Strategy. The Company's strategy
    includes the acquisition of underperforming 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 approvals, including antitrust approvals. There can
    be no assurance that the Company will be able to integrate any acquired
    businesses or make such businesses profitable.
        Possible Adverse Impact of Significant International Operations. The
    Company expects that international sales will continue to represent a
    significant portion of its revenues. In fiscal 1996, international sales
    accounted for over half of the Company's total revenues. These sales
    carry a number of inherent risks, including risks associated with
    currency exchange, tariffs and other potential trade barriers,
    potentially reduced protection for intellectual property, the impact of
    recessionary environments in economies outside the United States, and
    generally longer receivable collection patterns.
        Risks Associated with Protection, Defense, and Use of Intellectual
    Property. The Company holds many patents relating to various aspects of
    its products, and believes that proprietary technical know-how is
    critical to many of its products. Proprietary rights relating to the
    Company's products are protected from unauthorized use by third parties

                                        32PAGE
<PAGE>
    ThermoSpectra Corporation                       1996 Financial Statements

                           Forward-looking Statements

    only to the extent that they are covered by valid and enforceable patents
    or are maintained in confidence as trade secrets. There can be no
    assurance that patents will issue from any pending or future patent
    applications owned by or licensed to the Company or that the claims
    allowed under any issued patents will be sufficiently broad to protect
    the Company's technology and, in the absence of patent protection, the
    Company may be vulnerable to competitors who attempt to copy the
    Company's products or gain access to its trade secrets and know-how.
    Proceedings initiated by the Company to protect its proprietary rights
    could result in substantial costs to the Company. There can be no
    assurance that competitors of the Company will not initiate litigation to
    challenge the validity of the Company's patents, or that they will not
    use their resources to design comparable products that do not infringe
    the Company's patents. There may also be pending or issued patents held
    by parties not affiliated with the Company that relate to the Company's
    products or technologies. Each of the Company's PSI and NORAN
    subsidiaries has received an allegation of patent infringement from a
    competitor relating to its scanning probe microscopy technology and
    confocal microscopy technology, respectively. The Company may need to
    acquire licenses to, or contest the validity of, these or any other such
    patents. There can be no assurance that any license required under any
    such patent would be made available on acceptable terms or that the
    Company would prevail in any such contest. In addition, if any such
    competitor were successful in enforcing such patents, the Company could
    be subject to damages and enjoined from manufacturing and selling any
    related products. The Company could incur substantial costs in defending
    itself in suits brought against it or in suits in which the Company may
    assert its patent rights against others. If the outcome of any such
    litigation is unfavorable to the Company, the Company's business and
    results of operations could be materially adversely affected. In
    addition, the Company relies on trade secrets and proprietary know-how
    which it seeks to protect, in part, by confidentiality agreements with
    its collaborators, employees, and consultants. There can be no assurance
    that these agreements will not be breached, that the Company would have
    adequate remedies for any breach or that the Company's trade secrets will
    not otherwise become known or be independently developed by competitors.
        Inability to Raise Future Capital; Possible Dilution. In order to
    finance the acquisitions that are part of the Company's growth strategy,
    it may be necessary for the Company to raise additional funds either
    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
    and, in the case of an equity financing, could result in dilution to the
    Company's stockholders.

                                        33PAGE
<PAGE>
 ThermoSpectra Corporation                             1996 Financial Statements

                         Selected Financial Information


                                    The Company                     Predecessor
                   ------------------------------------------------ -----------
                                                            Aug. 21,   Dec. 29,
                                                               1992,      1991,
 (In thousands                                               through    through
 except per                                                  Jan. 2,   Aug. 20,
 share amounts)    1996 (a)    1995 (b)  1994 (c)      1993     1993   1992 (d)
 ------------------------------------------------------------------------------
 Statement of
   Income Data:
 Revenues          $123,199   $ 91,714   $ 42,142  $ 17,702 $  8,710   $ 13,420
 Net income (loss)    6,617      4,594      2,368       253      734       (932)
 Earnings per share     .53        .41        .25       .03     .08

 Balance Sheet
   Data:
 Working capital   $ 44,683   $ 35,961   $ 27,377  $  6,037 $  6,802   $  8,339
 Total assets       152,485    122,917     78,701    18,795   21,151     12,741
 Long-term
   obligations       22,300      7,300      7,300         -        -          -
 Shareholders'
   investment        89,621     82,525     53,313    14,494   15,630      9,834

 (a)  Includes the results of the Kevex businesses since their acquisition by
      Thermo Instrument in March 1996.
 (b)  Reflects the May 1995 acquisition of GIS and the net proceeds of the
      Company's initial public offering and private placement of common stock.
 (c)  Reflects the March 1994 acquisition by Thermo Instrument of NORAN, the
      September 1994 acquisition by the Company of IRT, and the net proceeds of
      the Company's private placements of common stock.
 (d)  Reflects the historical results of the oscilloscope and imaging systems
      divisions as included in Nicolet's financial statements prior to its
      acquisition by Thermo Instrument in August 1992.


                                        34PAGE
<PAGE>
    ThermoSpectra Corporation                       1996 Financial Statements



    Common Stock Market Information
        The following table shows the market range for the Company's common
    stock based on reported sale prices on the American Stock Exchange
    (symbol THS) since August 4, 1995, the date the Company's common stock
    began trading on that exchange.
                                                                             
                                      Fiscal 1996             Fiscal 1995
                                  -------------------     ------------------
    Quarter                          High         Low         High       Low
    ------------------------------------------------------------------------
    First                        $18 7/8     $14 5/8      $      -  $     -
    Second                        18 7/8      15 1/4             -        -
    Third                         16 1/8      12 1/2        19 1/2   16
    Fourth                        15 7/8      11 3/8        17 5/8   14 3/4

        As of January 24, 1997, the Company had 265 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 24, 1997, was $14 1/2 per share.

    Shareholder Services
        Shareholders of ThermoSpectra Corporation who desire information
    about the Company are invited to contact John N. Hatsopoulos, Chief
    Financial Officer, ThermoSpectra Corporation, 81 Wyman Street, P.O. Box
    9046, Waltham, Massachusetts 02254-9046, (617) 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. Beginning in 1997,
    quarterly distribution will be limited to the second quarter report only.
    All quarterly reports and press releases are available through the
    Internet from Thermo Electron's home page on the World Wide Web
    (http://www.thermo.com/subsid/ths.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


                                        35PAGE
<PAGE>
    ThermoSpectra Corporation                       1996 Financial Statements


    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.

    Form 10-K Report
        A copy of the Annual Report on Form 10-K for the fiscal year ended
    December 28, 1996, as filed with the Securities and Exchange Commission,
    may be obtained at no charge by writing to John N. Hatsopoulos, Chief
    Financial Officer, ThermoSpectra Corporation, 81 Wyman Street, P.O. Box
    9046, Waltham, Massachusetts 02254-9046.

    Annual Meeting
        The annual meeting of shareholders will be held on Monday, June 2,
    1997, at 10:00 a.m., at the Hyatt Regency Hotel, Hilton Head, South
    Carolina.


                                        36



                                                                    Exhibit 21



                            THERMOSPECTRA CORPORATION

                         Subsidiaries of the Registrant



   At March 14, 1997, the Registrant owned the following companies:

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

   Thermo Spectra B.V.                      The Netherlands        100
     Nicolet Technologies B.V.              The Netherlands        100
       Bakker Electronics Limited           United Kingdom         100
     NORAN Instruments B.V.                 The Netherlands        100
   Diametrix Detectors, Inc.                   Delaware             50
   Gould Instrument Systems, Inc.                Ohio              100
   Thermo Spectra GmbH                          Germany            100
     Gould Nicolet Messtechnik GmbH             Germany            100
       NORAN Instruments GmbH                   Germany            100
     Thermo Spectra Limited                 United Kingdom         100
       Nicolet Technologies Ltd.            United Kingdom         100
     Thermo Spectra S.A.                        France             100
       Nicolet Technologies S.A.R.L.            France             100
   Kevex Instruments Inc.                      Delaware            100
   Kevex X-Ray Inc.                            Delaware            100
   Nicolet Instrument Technologies Inc.        Wisconsin           100
   NORAN Instruments Inc.                      Wisconsin           100
   Park Scientific Instruments Corporation    California           100

                                                                   Exhibit 23


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



        As independent public accountants, we hereby consent to the
    incorporation by reference of our reports dated February 11, 1997,
    (except with respect to certain matters discussed in Note 13, as to which
    the date is March 12, 1997) included in or incorporated by reference into
    ThermoSpectra Corporation's Annual Report on Form 10-K for the year ended
    December 28, 1996, into the Company's previously filed Registration
    Statements as follows: Registration Statement No. 33-99110 on Form S-3
    and Registration Statement No. 33-80759 on Form S-8.



                                                      Arthur Andersen LLP



    Boston, Massachusetts
    March 17, 1997

<TABLE> <S> <C>

<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM
THERMOSPECTRA CORPORATION'S ANNUAL REPORT ON FORM 10-K FOR THE YEAR ENDED
DECEMBER 28, 1996 AND IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH
FINANCIAL STATEMENTS.
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<S>                             <C>
<PERIOD-TYPE>                   YEAR
<FISCAL-YEAR-END>                          DEC-28-1996
<PERIOD-END>                               DEC-28-1996
<CASH>                                          16,580
<SECURITIES>                                         0
<RECEIVABLES>                                   33,843
<ALLOWANCES>                                     1,516
<INVENTORY>                                     27,042
<CURRENT-ASSETS>                                83,602
<PP&E>                                          27,379
<DEPRECIATION>                                   7,210
<TOTAL-ASSETS>                                 152,485
<CURRENT-LIABILITIES>                           38,919
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                                0
                                          0
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<OTHER-SE>                                      89,497
<TOTAL-LIABILITY-AND-EQUITY>                   152,485
<SALES>                                        123,199
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<CGS>                                           62,900
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<OTHER-EXPENSES>                                13,081
<LOSS-PROVISION>                                   199
<INTEREST-EXPENSE>                                 773
<INCOME-PRETAX>                                 10,887
<INCOME-TAX>                                     4,270
<INCOME-CONTINUING>                              6,617
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