ZYGO CORP
10-K405, 1997-09-16
OPTICAL INSTRUMENTS & LENSES
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                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549

                                  FORM 10-K405

         ANNUAL REPORT PURSUANT TO SECTION 13 or 15(d) OF THE SECURITIES
                       EXCHANGE ACT OF 1934 (FEE REQUIRED)

For the fiscal year ended June 30, 1997
Commission file number 0-12944

                                Zygo Corporation
- --------------------------------------------------------------------------------
             (Exact name of registrant as specified in its charter)

Delaware                                               06-0864500
- --------------------------------------------------------------------------------
(State or other jurisdiction of          (I.R.S. Employer Identification Number)
incorporation or organization)

Laurel Brook Road, Middlefield, Connecticut                          06455
- --------------------------------------------------------------------------------
(Address of principal executive offices)                           (Zip Code)

Registrant's telephone number, including area code                (860) 347-8506
                                                                  --------------
Securities registered pursuant to Section 12(b) of the Act:            None
                                                                  --------------

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

                               Title of each class
                               -------------------
                          Common Stock, $.10 Par Value
                          ----------------------------

Indicate by check mark whether the registrant (1) has filed all reports required
to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during
the preceding 12 months (or for such shorter period that the registrant was
required to file such reports), and (2) has been subject to such filing
requirements for the past 90 days.

                                  YES _X_  NO ___

Indicate 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 registrant's knowledge, in definitive proxy or information statements
incorporated by reference in Part III of this Form 10-K405 or any amendment to
this Form 10-K405. _______

State the aggregate market value of the voting stock held by nonaffiliates of
the registrant.* The aggregate market value shall be computed by reference to
the price at which the stock was sold, or the average bid and asked prices of
such stock, as of a specified date within 60 days prior to the date of filing.

           Aggregate market value at August 29, 1997, was $254,126,530

*Solely for purposes of this calculation affiliates of the registrant have been
deemed to include only Canon, Inc., and the directors and executive officers of
the registrant, and members of their immediate families living in their homes.

Indicate the number of shares outstanding of each of the registrant's classes of
common stock, as of the latest practicable date.

           10,894,990 Shares of Common Stock, $.10 Par Value, at August 29, 1997


The following documents are incorporated by reference in this Form 10-K405.

                                                                 Part of the
                     Document                                   Form 10-K405
                     --------                                   ------------
     1997 Annual Report - (Specified Portions)                 Parts I and II
     Proxy Statement to be used in connection with the
     Registrant's 1997 Annual Meeting of Stockholders - 
     (Specified Portions)                                      Part III


<PAGE>



                                     PART I

ITEM 1.  BUSINESS

                                   THE COMPANY

         Zygo Corporation, through its divisions and wholly owned subsidiaries,
Middlefield, Technical Instrument Company (TIC), and NexStar Automation, Inc.
(NexStar) designs, develops, manufactures and markets high performance
noncontact electro-optical measuring instruments and systems, automation
systems, and components. The Middlefield division also manufactures optical
components to precise tolerances both for sale and for use as key elements in
its own products. Utilizing proprietary laser and white light optical technology
combined with advanced software and electronics, Zygo's precision noncontact
measuring instruments and systems enable manufacturers in a variety of high
technology industries, including data storage, semiconductor, and precision
optics, to increase operating efficiencies and production yields by identifying
and collecting quantitative data on product defects, both during and after the
manufacturing process. Zygo's interferometric and confocal components are sold
directly to OEMs for incorporation into their products. Zygo's optical
components are used in many applications, including laser fusion research,
semiconductor manufacturing equipment, and aerospace optical systems, as well as
being an integral part of precision optical instruments.

         Predominantly all of Zygo's instruments and systems employ either a
laser or white light source to make noncontact measurements. Zygo is a leader in
interferometric and confocal metrology. Interferometric metrology, utilizing a
process called interferometry, whereby a pattern of bright and dark lines
(called fringes) results from an optical path difference between a reference and
a measurement beam. Zygo's products then analyze these patterns through a series
of steps and generate quantitative three-dimensional surface profiles, which are
used to determine conformity to dimensional specification and, increasingly, to
analyze and enhance manufacturing processes. Interferometric measurement
instruments and systems are used by a variety of industries, including by the
data storage industry to inspect and analyze the surface of computer hard disks
and read/write heads, and by the semiconductor industry for high precision
distance measurement and motion control. Confocal Scanning Optical Microscopy
("CSOM") is a key base technology employed in TIC's products. The majority of
TIC's microscope systems and subsystems employ white light CSOM technology. In a
microscope utilizing white light CSOM imaging, a high-intensity white light
illuminates a section of a spinning disk containing pinholes arranged in
multiple spiral patterns. Acting as point illumination sources, the pinholes
direct light to points on the sample. The reflected light from the sample
returns through the same section of the disk. Only light from points on the
sample near the focal plane will pass through the pinholes for imaging. Zygo's
NexStar Automation unit designs, develops, manufactures, and markets
comprehensive automated system solutions to enable manufacturers in a variety of
high technology industries, including the data storage, semiconductor, and
electronics industries, to enhance operational efficiencies and product yields.
NexStar's high speed production solutions reduce downtimes, especially in
manufacturing processes adaptable to the manufacture of multiple products
differing in size, features, and functionality.

                                   BACKGROUND

         Historically, measurement and inspection instrumentation has consisted
of contact profiling devices and visual qualitative inspection systems.
Advancing technologies have required manufacturers in a variety of industries to
produce smaller products with more precise tolerances and decreased design
geometries, not capable of adequately being measured by the devices and systems
then being utilized. For example, contact profilers and visual qualitative
inspection systems are inadequate for quantitative analysis of critical
dimensions such as air bearing surface geometry and pole-tip recession necessary
in high volume production of read/write heads.

                                        1


<PAGE>



         The demands on these manufacturers to produce more powerful and smaller
products with more precise tolerances have fueled demand for precision
noncontact measuring instruments. In fact, high performance, noncontact
metrology is an enabling technology for the semiconductor, data storage, and
other vital high technology industries. The trend towards miniaturization and
tighter tolerances creates new challenges for manufacturers as they are forced
to handle, measure, and test ever smaller components. As piece part dimensions
and tolerances become smaller, "nano technology scale" precision is
necessitated. Disk drive manufacturers, for example, continue to increase drive
capacity while reducing the size of drives. For this to happen, the recording
head must fly closer to the disk and the head itself must be made smaller and to
greater precision.

         In addition, until recently, noncontact measuring instruments have been
limited almost exclusively to use by quality control laboratories for off-line
inspection on a test basis only. The historical cyclical nature of the
semiconductor industry, the data storage industry, and other capital goods
sector industries, together with increased competitive forces in these
industries, have forced these industries to no longer depend solely on sales
growth to fuel financial performance improvement, but rather to focus greater
attention on the need to reduce production defects and significantly increase
production yields. These pressures on manufacturers to improve productivity and
quality have required integration of process control technologies directly into
the manufacturing process, allowing manufacturers to test a greater percentage
of their components while in production. Instrumentation is increasingly being
sought to more accurately measure the conformity of parts to their
specifications and detect defects directly on the manufacturing line, and to
address other specific needs of the manufacturers to improve production yields.
As the data storage industry, semiconductor industry, and other high technology
industries are forced to install more sophisticated and difficult to manage and
control production and assembly processes, a greater degree of on-line, high
precision, surface metrology and defect detection systems is required.

                                THE ZYGO SOLUTION

         Zygo's instruments and systems provide critical productivity
enhancement capability to the data storage, semiconductor, and other high
technology markets. Zygo has worked closely with leaders of the data storage,
semiconductor, and other capital goods sector industries to help these
manufacturers meet the ever-increasing production demands of their industries.
Utilizing proprietary laser and optical technology combined with advanced
software and electronics, Zygo's precision noncontact measuring instruments and
systems enable manufacturers in a variety of industries to increase operating
efficiencies and product yields by identifying and collecting quantitative data
on product defects, both during and after the manufacturing process.

         A wide range of operational features and data analysis capabilities are
available on Zygo's measurement instruments. Instrumentation has been designed
with maximum flexibility to satisfy a customer's existing needs and to be
adaptable to satisfy expansion and growth. Certain measuring devices can be used
in either the horizontal or vertical configuration, and on the production line
or in the development lab.

         Certain of Zygo's instruments and systems utilize interferometry to
accomplish precise measurement of a variety of surface geometries or to control
motion and minute movements during the manufacturing process. In interferometry,
a pattern of bright and dark lines (fringes) results from an optical path
difference between a reference and a measurement beam. Incoming light is split
inside an interferometer, one beam going to an internal reference surface and
the other to a sample. After reflection, the beams recombine inside the
interferometer, undergo constructive and destructive interference, and produce
the light and dark fringe pattern. The number, shape, and position of the lines
in the fringe patterns can be analyzed to provide quantitative surface structure
analysis. Zygo's interferometric instruments and systems utilize highly
sophisticated subsystems, including: precision optical components such as
beamsplitters, reference optics, and transmission optics; stable and long-life
laser or other light sources; piece part positioning stages; high-powered
workstations or PCs for processing and analyzing fringe pattern data; and a
variety of peripheral components such as monitors and printers.

                                        2


<PAGE>



         Interferometry has certain inherent benefits over other forms of
surface and distance measurement as it provides noncontact, quantitative, full
field of view, ultra-high resolution surface analysis in three dimensions, which
results in higher analysis throughput and lower cost of ownership for the user.
Additionally, interferometric metrology is often an enabling technology as
dimensions and tolerances of many parts in high technology applications have
dimensions below 250 nanometers.

         The majority of TIC's microscope systems and subsystems employ white
light confocal scanning optical microscopy ("CSOM") technology. Over the past
several years, TIC has added other imaging systems to its product offering,
including laser scanning confocal and atomic force microscopy. Today TIC
specializes in integrating imaging modes, viewing accessories, and measurement
tools within its microscopy systems and subsystems for customers in a wide
variety of high technology fields.

         CSOM is a key base technology employed in TIC's products. In a
microscope utilizing white light CSOM imaging, a high-intensity white light
illuminates a section of a spinning disk containing pinholes arranged in
multiple spiral patterns. Acting as point illumination sources, the pinholes
direct light to points on the sample. The reflected light from the sample
returns through the same section of the disk. Only light from points on the
sample near the focal plane will pass through the pinholes for imaging. The
advantage of the white light CSOM technology over other forms of imaging systems
offering sub-micron definition include: high resolution in real time with no
delay for image processing, transverse resolution, and extremely shallow
depth-of-field provide precise imaging of sub-half micron structures and lower
cost of ownership. CSOM imaging is used for both inspection and metrology
measurement in TIC's systems. A laser confocal system employs a laser light
source which causes a sample to fluoresce with the resulting light of a shorter
wavelength which retraces its path to a pinhole. The fluorescent light is split
into two spectral ranges. After an x/y scan the two channels are digitized and
stored in the computer as separate images that can be displayed individually or
overlaid to create a single color image. This results in high resolution and the
ability to display many layers of translucent samples as a live overlay of
bright, perfectly registered optical sections. Atomic force microscopy measures
the atomic and molecular forces between a sample and an ultra-fine silicon tip
mounted on a spring-loaded cantilever. A laser light is focused on the
cantilever and measured by a position sensitive detector which converts
cantilever deflection into an electrical signal. By keeping the deflection of
the cantilever constant, a sensor scans the sample and measures its compensative
movement. With no electrical conductivity requirement, virtually any sample can
be examined in life size with superior image at fine resolution.

         NexStar's automated solutions integrate its own proprietary mechanical
components and applications software with nonproprietary mechanical, software,
and robotics subsystems produced by third parties. NexStar's automated solutions
also enhance production control to ensure consistent high quality. NexStar's
sophisticated automation products and equipment are utilized in many
applications, including media manufacturing, disk drive assembly, semiconductor
manufacturing, and packaging and assembly applications in medical disposables
production.

         To meet the rapidly changing and increasing requirements of
manufacturers, Zygo's business is transforming from that of an off-line quality
control and quality assurance test and measurement instrument supplier to an
on-line production improvement and yield management system provider. Since early
1995, Zygo has introduced several on-line yield improvement systems, including
the AAB, NewView 200, KMS 400, automated disk flatness sorter, automated disk
thickness sorter, and the Pegasus 2000 Flying Height tester.

                                  ZYGO STRATEGY

         Zygo's objective is to expand its position as a leading worldwide
supplier of high performance, noncontact electro-optical measuring, production
control, and yield management improvement instruments, systems and accessories
that improve the performance, quality, reliability, yield and cost of automated
manufacturing processes, and of optical components to precise tolerances. Zygo
dedicates substantial resources to research and product development to enable it
to compete effectively in its market areas.

                                        3


<PAGE>




         Key elements of Zygo's strategy include:

         Maintain Enhanced Leadership Through Innovative Technical Solutions. By
         integrating its proprietary electro-optical technologies, proprietary
         applications software and unique system integration capabilities, Zygo
         provides leading edge automated optical inspection solutions in the
         shortest possible time. Zygo's core technologies of optical
         interferometry, optical metrology, confocal scanning optical metrology,
         system engineering integration, automation systems expertise,
         application software, and precision optical component fabrication and
         coating are directly applied to meet the higher measurement precision,
         accuracy, resolution, data acquisition and data analysis requirements
         in the most demanding manufacturing processes of its customers.
         Throughout its history, Zygo has met its customers' requirements
         through innovation and invention with 68 United States patents and 9
         foreign patents, and has 14 United States patent applications and 7
         foreign patent applications pending.

         Focus on New Market Segments. Zygo's products have applications for a
         wide variety of industries. In the development of these products, Zygo
         focuses on market segments which it believes have growth potential and
         in which Zygo can reasonably expect to become a leading manufacturer.
         Zygo seeks to adapt the noncontact inspection and process control
         technology it develops for one application to other markets.

         Broaden Customer Relationships. Zygo focuses on establishing the
         strongest relationship with major industry leaders in its served
         markets. This is accomplished by working closely with its customers and
         identifying increasing numbers of applications for automated optical
         inspection and yield improvement systems. Zygo also focuses on fully
         integrating its offerings into its customers' manufacturing processes
         through automated parts handling, enhanced product metrology and defect
         analysis, and by more complete integration into the customers'
         workcells by fully integrated process information networking, all
         geared to improve production. Zygo intends, by forming closer customer
         alliances, to better understand the evolving needs of its customers
         and, through the application of innovative technology, to provide high
         performance, high quality, cost effective solutions to the production
         improvement requirements in the shortest possible cycle time. Through
         this solution-sales cycle, which further promotes a closer and longer
         term partnership relationship between Zygo and its customers, Zygo
         intends to attain a preferred position with major industry leaders.

         Supply Quality Solutions Rapidly. Zygo seeks to deliver high quality
         and high reliability system solutions in a minimal cycle time. To this
         end, Zygo has installed an enterprise-wide total quality process where
         employee-led teams work to continuously improve the effectiveness and
         efficiency of its processes while searching out and removing areas of
         poor quality and waste. Zygo's operations strategy focuses on
         internally providing those manufacturing services that add unique value
         in a rapidly changing customer needs environment.

         Provide Uninterrupted Worldwide Service and Support. To support leading
         customers' continuous manufacturing processes, Zygo ensures optimal
         operation and reliable performance of its production control equipment
         through its worldwide customer support service group. Through a
         worldwide network of service representatives, Zygo provides 24-hour
         on-demand maintenance services. Its service engineers have a unique
         skill set, including optical and electrical component repair, software,
         application and system integration diagnostic and problem solution
         capabilities.

         Broaden Product Offerings and Markets Through Internal Developments and
         Acquisitions. Zygo has broadened its product offerings by continuing to
         internally develop additional products and by aggressively pursuing the
         acquisition of companies where synergies can be identified. In 1995,
         Zygo formed a start-up operation in Simi Valley, California, as a way
         to

                                        4


<PAGE>



         broaden its product offering and participation in the data storage
         industry. Zygo has determined that these start-up operations can be an
         effective alternative to an acquisition when the technology resident in
         Zygo is complementary to the market knowledge and expertise resident in
         the individuals hired to manage the start-up. Zygo also maintains an
         active program of investigating and negotiating potential synergistic
         acquisitions which extend Zygo's product lines or markets. Zygo
         believes that its acquisition strategy is an important element of its
         total business strategy. In 1995, Zygo completed the acquisition of a
         small manufacturer of high precision laser tubes, which allowed Zygo to
         bring in-house a technology that is critical to the performance of its
         motion control products. Early in fiscal 1997, Zygo completed the
         acquisition of Technical Instrument Company, a manufacturer of confocal
         microscopy systems and modules, and the acquisition of NexStar
         Automation, Inc., a manufacturer of automation and parts handling
         equipment, and subsequent to the close of fiscal 1997, the Company
         completed the acquisition of Sight Systems, Inc., a manufacturer of
         precision application-specific vision metrology systems, and Syncotec
         Neue Technologien und Instrumente GmbH, a manufacturer of confocal
         modules and other custom metrology products in Germany. Zygo also
         announced the signing of a letter of intent to purchase Digital
         Instruments, Inc. and Digital Instruments GmbH, a leading manufacturer
         of scanning probe microscopes.

                                    PRODUCTS

         Zygo manufactures high performance, noncontact electro-optical
measuring instruments and systems and accessories, and optical components to
precise tolerances both for sale and for use as key elements in its own
products. Zygo operates in a single business segment, electro-optics, and offers
products which fall into two general categories: (1) instruments and systems and
(2) modules and components.

Instruments and Systems

         Zygo's product strategy is to develop its instruments and systems
utilizing modular designs where entire product families share several, if not
all, of the same components, modules and software. Since 1992, Zygo has
redesigned all of its instruments and continues to upgrade its software and
enhance its products by adding features such as automated stages and parts
handling to many of its instruments and systems.

         All of Zygo's instrument products utilize powerful processors that
facilitate high speed data acquisition and data analysis. Zygo's interferometric
surface analysis microscopes and large aperture surface measurement
interferometers utilize Zygo's proprietary MetroPro(R) software, which has a
graphical user interface that makes the product very user friendly. The
MetroPro(R) software, combined with super high-resolution graphics and pull-down
menus, provides the user with engineering solutions without off-line processing.
The software allows the user to record, print, and store measurement data
locally as well as to distribute the data through networks for process
management and further analysis. Zygo's proprietary software provides Zygo with
comparative advantage because of its high speed, powerful analysis capability
based on proprietary algorithms, easily configurable screens, powerful image
analysis modules, and adaptability to new applications.

                                        5


<PAGE>

<TABLE>

SURFACE ANALYSIS MICROSCOPES
<CAPTION>
PRODUCT         PRICE RANGE      TECHNOLOGY                  MEASUREMENT                         APPLICATION
- -----------------------------------------------------------------------------------------------------------------------
<S>             <C>            <C>                 <C>                                  <C>
Maxim*GP           $50K        Interferometric     Roughness; Depths; Coplanarity;      Product and Process Development

NewView 100

NewView 200                    Microscopy                                               On-Line Process

AAB System                                         Micro-shape; Lengths; Widths;

AMS 250              to        Confocal                                                 Control/Product

AMS 350                                                                                 Inspection;

KMS 350

KMS 400            $600K       Microscopy                 Area; Volumes                 QC inspection
- -----------------------------------------------------------------------------------------------------------------------
</TABLE>

         The surface characteristics of many products in industries such as
semiconductor, data storage, fiber optics, and medical implants, and with
increased applications in the paper, printing plates, coatings, and
pharmaceuticals industries, controls the performance of the product. As a
result, surface structure analysis is fundamental to many facets of research and
industry. The Zygo Maxim*GP, the fully automated AAB System, and NewView
microscopes combine advanced techniques of interferometry, microscopy, and
precision translation stages, to enable high precision surface analysis. Unlike
visual microscopes, Zygo's instruments provide measurement information as
quantitative three-dimensional images, two- and three-dimensional surface maps
with colors and shades representing relative heights of surface features, and
numeric results. The Maxim*GP is based on phase shifting interferometry to
provide very precise, fast measurements of specular ("Mirror-like") or near
specular surfaces. The NewView 100 and NewView 200 use scanning white light
interferometry to measure nonspecular surfaces.

         TIC's AMS and KMS microscope systems represent the majority of its
sales. The KMS group of products are fully automated high-throughput confocal
microscopy systems which provide measurement in three axes and real-time
observation in color. Nondestructive confocal white light imaging permits
measurements which are impossible with other types of critical dimension
measurement instrumentation such as scanning electron microscopes. Positioning,
measurement, and data collection are easily custom-configured and interface to
most networks. The KMS products utilize powerful software which is menu and
script-file driven to allow for ease in program generation. The AMS product is a
manual version of the KMS which is typically used in development centers for low
volume metrology and inspection requirements. The majority of these products are
sold to manufacturers to optically transfer these images onto semiconductor
wafers. As the demands for finer line width geometry's increases, mask
manufacturers must utilize sophisticated metrology and inspection tools as a way
to improve their manufacturing yields.
<TABLE>

               LARGE APERTURE SURFACE MEASUREMENT INTERFEROMETERS
<CAPTION>
PRODUCT         PRICE RANGE      TECHNOLOGY                  MEASUREMENT                         APPLICATION
- ------------------------------------------------------------------------------------------------------------------------
<S>               <C>          <C>                 <C>                                  <C>
GPI LC            $15K         Large               Flatness; Sphericity;                Product and Process Development;
                                                   Radius of Curvature;
GPI ST             to          Aperture            Optical System                       Off-Line Process Control/Product
                                                   Quality; Transparent Material
GPI XP            $250k        Interferometry      Homogenity                           QC Inspection
- ------------------------------------------------------------------------------------------------------------------------
</TABLE>

         Zygo's interferometers for large surface measurement, the Growth
Potential Interferometer ("GPI") family of upgradable instruments, basically
consist of enlarged versions of the three-dimensional microscope, designed to
perform surface profile analysis on larger surface areas. Each

                                        6


<PAGE>



member of the GPI interferometer family is designed to address a specific level
of measurement needs. While all GPI models have essentially the same purpose -
noncontact measurement of flat or spherical surfaces and transmitted wavefront
measurement of optics - they differ widely in operational features and data
analysis capabilities. The GPI family of products is used extensively in the
optics industry to measure glass or plastic optical components like flats,
lenses and prisms, and more recently in a growing number of other situations to
measure precision components such as hard disks, bearing and sealing surfaces,
polished ceramics, and contact lens molds.
<TABLE>

                              FLYING HEIGHT TESTER
<CAPTION>
PRODUCT            PRICE RANGE                   MEASUREMENT                          APPLICATION
- -----------------------------------------------------------------------------------------------------------
<S>                   <C>                    <C>                                     <C>
Pegasus 2000          $200K                  Read/Write Head Gimbal                  Product Development;

                        to                   Assembly Flying Height             Off-Line Process Control;

                      $250K                                                          QC Inspection
- -----------------------------------------------------------------------------------------------------------
</TABLE>

         In September 1995, Zygo introduced the Pegasus 2000, a flying height
tester. The flying height tester measures the height at which a read/write head
flies over the surface of a magnetic disk within the disk drive. The industry
demands for increased storage capacity are compelling manufacturers to reduce
the flying height, as increased amounts of data can be stored on magnetic heads
the closer they fly to the disk. The Pegasus 2000 offers several unique
capabilities to the data storage industry. As flying heights are reduced,
manufacturers require measurement instruments which can measure at near-contact.
Zygo's flying height tester actually increases in accuracy the closer the
read/write head flies over the surface of the disk. Additionally, due to
significant increases in disk storage requirements, manufacturers require
easy-to-use, high throughput testers. The Pegasus 2000 has been designed as a
production oriented tester. For example, the system is capable of having a head
loaded while a second head is being tested. Also, the tester automatically
calibrates the sensor requirements of each head rather than requiring operator
inputs.

AUTOMATION SYSTEMS

         NexStar's automated solutions integrate its own proprietary mechanical
components and applications software with mechanical, software, and robotics
subsystems produced by third parties. NexStar's automated solutions also enhance
production control to ensure consistent high quality. NexStar manufactures
advanced automation systems to load and unload process equipment, enhance the
operation of quality inspection equipment, convey component parts throughout the
factory, and assemble complex products. It is usual for such systems to be built
to stringent environmental requirements such as cleanroom standards, aseptic
medical standards, and for resistance to corrosive conditions. NexStar products
and services fall into four general categories: (1) process equipment
automation, (2) quality inspection enhancement, (3) material transport, and (4)
custom system integration. NexStar's sophisticated automation products and
equipment are utilized in many applications, including media manufacturing, disk
drive assembly, semiconductor manufacturing, and packaging and assembly
applications in medical disposables production.

         The overall growth in high technology fields such as the data storage
and semiconductor industries, combined with the need of manufacturers in those
industries to produce products that are both smaller and more powerful and have
more precise tolerances, has fueled capital expenditures for on-line automation
equipment such as NexStar manufactures. In the data storage market, NexStar's
focus has been the development of automated solutions used in cleanrooms for
media handling, disk drive, and disk cartridge assembly. It has created
proprietary components including robotic arms, parts handling, conveyor systems,
and disk stack assemblies. Similar solutions have been developed for the
semiconductor market. In the medical disposables market, NexStar has
manufactured proprietary automated products to assemble disposables,
subassemblies, and medical tube coiling devices with flexible designs that
permit the handling in a sterile environment of various sizes of corrugated or
smooth bore tubing and small diameter catheters and wires.

                                        7


<PAGE>



COMPONENTS
<TABLE>
            PRECISION DISTANCE AND ANGLE MEASUREMENT INTERFEROMETERS
<CAPTION>
PRODUCT            PRICE RANGE                   MEASUREMENT                          APPLICATION
- ----------------------------------------------------------------------------------------------------------------
<S>                   <C>                  <C>                                 <C>
ZMI-1000              $15K                 Distance; Angle; Velocity;          Semiconductor and Flat Panel

  and                  to                       Time/Position                     Display Manufacturing;

ZMI-2000              $100K                                                   Product and Process Development;

                                                                                 Precision Machine Tools
- ----------------------------------------------------------------------------------------------------------------
</TABLE>

         Fast, precise control of machine motion is the primary challenge in
many production processes. Industries as diverse as semiconductor and flat panel
display production and optical component manufacturing require systems to
measure the position of a tool relative to a part under fabrication. Zygo's ZMI
family of Laser Interferometer systems provides the measurements that control
the position of some of the world's most sophisticated machinery. Through the
use of a directed laser beam reflecting from the moving portion of the machine,
the ZMI-1000 can tell the machine's computer control systems about movements as
small as 1.24 nanometers (billionths of a meter). This level of accuracy can be
compared to the finest geometries of semiconductors, which are approximately 350
nanometers. Its design also accommodates fast motions and maintains its
precision at speeds in excess of a meter per second. Applications for these
interferometers include accurately measuring and controlling, while they are in
motion, the x, y, and theta stages in photolithography equipment that is used in
making semiconductors and flat-panel video displays. Although Zygo sells this
instrumentation to a large number of customers, the majority of these
interferometers are sold on an OEM basis to Canon. Zygo is Canon's sole-source
provider of motion control devices for use in Canon's photolithography systems.
These systems perform a critical function in the process of manufacturing
semiconductors.

<TABLE>
                                CONFOCAL MODULES
<CAPTION>
PRODUCT            PRICE RANGE                   MEASUREMENT                          APPLICATION
- ----------------------------------------------------------------------------------------------------------------
<S>                   <C>                  <C>                                 <C>
ZMI-1000              $15K                 Distance; Angle; Velocity;          Semiconductor and Flat Panel

  and                  to                       Time/Position                     Display Manufacturing;

ZMI-2000              $100K                                                   Product and Process Development;

                                                                                 Precision Machine Tools
- ----------------------------------------------------------------------------------------------------------------
</TABLE>

         TIC's module products include the K-2 Industrial module, the NCM module
and the PCM module. The K-2 module provides confocal scanning capability to
nearly any modern upright white-light microscope. The product is fitted to the
microscope as a replacement for the vertical illuminator and attaches to the
microscope stand. The K-2 module provides two confocal modes and one brightfield
imaging mode. TIC also offers an optional confocal software package with the K-2
module which makes it possible to precisely layer several two-dimensional
confocal images to create an extremely accurate three-dimensional image. The K-2
module is primarily sold to OEMs. The NCM module is a confocal module, similar
to the K-2 module, which is incorporated into the Nikon IC-200C microscope. The
PCM module was recently developed for an OEM application in the biomedical
field. The module utilizes TIC's laser scanning confocal technology where
fluorescence is used to analyze the subject. This module is incorporated into an
OEM product which is used in research work for analyzing cell structures and
DNA. TIC's principal OEM accounts include Nikon, Leica, Reichert, and Nidek.

                                        8


<PAGE>



                          PRECISION OPTICAL COMPONENTS

          COMPONENT(S)                                       APPLICATION
- --------------------------------------------------------------------------------
         Flats; Spheres;                             Laser and White Light Based

      Waveplates; Mirrors;                              Optical Instruments;

 Precision Mechanical Components;                        High Power Lasers;

        Aerospace Windows;                                Photolithography;

     Photolithographic Stages                            Military; Research
- --------------------------------------------------------------------------------

         Zygo believes it is a world leader in the design and manufacture of
highly accurate "cosmetically excellent" surfaces and angles on plano components
ranging in size from small prisms to large mirrors, scanners, aerospace windows
and laser amplifier disks. Zygo's precision machining capability is used to make
complex glass and ceramic parts such as stage mirrors and other lightweight
structures. Operations at Zygo's state-of-the-art optical components
manufacturing facility include machining, shaping, generating, grinding,
polishing, and edging. Zygo utilizes technology that it has developed and
incorporated into rotary polishing machines designed and built by Zygo. Zygo's
thin film coating capability includes metallic and high-efficiency dielectric
coatings for transmissive or reflective applications, in the ultraviolet,
visible, and infrared regions of the spectrum. Zygo also applies polarization,
beamsplitter, and anti-reflection coatings. Late in fiscal 1997, Zygo was
selected by Lawrence Livermore National Laboratory to be a primary supplier of
large plano optical components for the National Ignition Facility (NIF), a $1.2
billion Department of Energy project at Livermore to produce the world's largest
laser for nuclear fusion research. The contract is another significant step in
the NIF program for Zygo and provides for the Company to design, manufacture,
and equip a world-class optical fabrication facility at its Middlefield,
Connecticut, operations for a fixed price of nearly $10 million over an 18-month
time period. The contract was funded to slightly in excess of $5.5 million in
the fiscal year ended June 30, 1997. Subsequent to the end of fiscal 1997, the
Company received an additional $4.3 million of funding. Consistent with similar
government contracts, additional appropriations from the U.S. Congress are
required prior to the Company's receiving additional funding. While there is no
guarantee that the NIF program at Livermore will receive additional governmental
funding in future government fiscal years or that the Company's project will be
funded by LLNL beyond the initial $10 million, the contract contemplates the
completion of the Middlefield NIF facility (fully funded) and provides for
additional potential funding covering the increased capacity at the facility as
well as pilot production beginning at the conclusion of the facilitization
contract. The final aspect of the contract contemplates the negotiation, during
the pilot production phase of the contract, of an optical components production
contract which is expected to have a value to Zygo of approximately $15 million
and cover several years.

         To ensure quality control of its products, Zygo maintains complete
control over every facet of manufacturing, from grinding and polishing to mating
and assembly. At each stage of production, opticians test and verify the
components using sophisticated interferometric measuring instruments designed
and manufactured by Zygo. Zygo believes that the production of its precision
optical components gives Zygo a distinct competitive advantage over most of its
competitors.

                                        9


<PAGE>


PERCENTAGE OF CONSOLIDATED SALES

         The following table shows the past three years of relative
contributions of instruments and accessories and precision optical components to
consolidated sales.

        Year ended June 30,              1997            1996              1995
        -----------------------------------------------------------------------
        Instruments and Systems           75%             65%               62%
        Modules and Components            25              35                38
        ----------- -----------------------------------------------------------

               Total                     100%            100%              100%
        ===========================================================+===========

COMPETITION

         Although Zygo believes that its products are unique, competitors offer
technologies, instrumentation, and systems that are capable of performing
certain of the functions performed by Zygo's products. Zygo faces competition
from a number of companies in all its markets, some of which have greater
manufacturing and marketing capabilities, and greater financial, technological,
and personnel resources. In addition, Zygo may compete with the internal
development efforts of its current and prospective customers. Zygo believes that
its systems and components offer several advantages over competitive products in
terms of accuracy, speed, flexibility, cost, and ease of use. Although Zygo has
attempted to protect the proprietary nature of such products, it is possible
that any of Zygo's products could be duplicated by other companies in the same
general market. In addition, there can be no assurances that Zygo would be able
to compete with similar products produced by a competitor.

              PRINCIPAL CUSTOMERS AND OPERATIONS BY GEOGRAPHIC AREA

         The growing need for dimensional control to the subnanometer level has
created a growing need for Zygo's instruments and systems among both OEMs and
end users. Traditionally, Zygo's largest market has been high precision optical
components and systems. As the market demands for greater tolerance control in
the manufacturing process has increased, particularly in the data storage and
semiconductor markets, Zygo has been able to meet these demands with
on-the-production-line process and quality control instruments and systems as
well as with its off-line quality control instruments. As a result, the data
storage and semiconductor industries are now Zygo's largest markets.

         Historically, a relatively limited number of customers have accounted
for a substantial portion of Zygo's revenues. In fiscal years 1997, 1996, and
1995, sales to Zygo's top two customers accounted for approximately 25.5%,
50.3%, and 46.8%, respectively, of Zygo's net sales. During these fiscal years,
sales to Canon, Zygo's largest customer, accounted for approximately 20.1%,
34.4%, and 29.6 %, respectively, of Zygo's net sales. Canon, one of the original
investors in Zygo, is a valuable strategic partner of Zygo and the relationship
is important to both companies for many reasons. Sales to Canon include products
that Canon uses in its manufacturing facilities, such as Zygo's large aperture
surface measurement interferometers, which are used to quantitatively analyze
the surface of optics Canon produces for its photolithographic steppers, and
Zygo's motion measurement components which are incorporated into Canon's
steppers for controlling the x/y stage in that product. Zygo is Canon's sole
source for motion control systems. Sales to Canon also include optical
components and instruments, systems and accessories sold by Canon as a
distributor for certain of the Company's products in Japan. In fiscal 1996 and
1995, Seagate, a leading manufacturer of computer disk drives and related
hardware and software, accounted for an additional approximately 15.8% and
17.2%, respectively, of Zygo's net sales. No other customer accounted for
greater than approximately 10% of Zygo's net sales in fiscal 1997, 1996, or
1995.

                                       10


<PAGE>


         The following is a representative list of end users of Zygo's products:
<TABLE>
<CAPTION>
                                                                                    INDUSTRIAL SURFACES &
SEMICONDUCTOR                DATA STORAGE                   OPTICS                     MACHINE CONTROL
- -------------                ------------                   ------                  --------------------
<S>                      <C>                           <C>                          <C>
Canon                    Akashic                       Bausch & Lomb                Anorad
DuPont                   Applied Magnetics             Canon                        Cummins Engine
ESI                      Hitachi                       Corning                      Dover Instruments
ETEC                     Iomega                        Hughes                       General Motors
IBM                      Komag                         Laboratory for               Gerber Scientific
Intel                    Maxtor                        Laser Energetics             Martin Marietta
KLA/Tencor               Quantum                       Lawrence Livermore           National Institute of
Motorola                 Read-Rite                     National Laboratories        Standards & Technology
NEC                      SAE Magnetics                 Melles Griot                 Rank Taylor Hobson
Photronics               Seagate                       Nikon                        Saint-Gobain/Norton
SVG                      Sony                          OCLI                         Sikorsky Aircraft
Sematech                 TDK                           Perkin Elmer                 Stanadyne
Texas Instruments        Toshiba                       Schott Glass                 3-M
Toshiba                                                Vistakon                     TRW
Ultratech Stepper                                      Zeiss
</TABLE>

         Zygo sells its products worldwide through a combination of direct sales
staff and independent distributors and sales representatives. Zygo maintains a
direct sales staff at its headquarters in Middlefield, Connecticut, and in
California, Colorado, Georgia, and Washington for domestic sales. International
sales are made through more than 10 representatives and distributors, covering
sales and service in over 20 countries including Japan, Singapore, Malaysia,
South Korea, Taiwan, Philippines, United Kingdom, Germany, Italy, and France.

         The following table sets forth the percentage of Zygo's total sales
(including sales delivered through distributors) by location during the past
three years:

                                                    YEAR ENDED JUNE 30,
                                            -----------------------------------
                                            1997            1996           1995
                                            ----            ----           ----
        United States                       54.7%           52.6%          53.5%

        Japan                               24.9            34.4           29.9

        Pacific Rim                         14.5             8.3           10.2

        Other (primarily Europe)             5.9             4.7            6.4

         Substantially all of Zygo's export sales are negotiated, invoiced, and
paid in United States dollars. International sales and foreign operations are
subject to certain inherent risks.

         The selling process for Zygo's products frequently involves
participation by sales, marketing, applications specialists, and engineering
personnel. Zygo's marketing activities also include participation in
international standards organizations, trade shows, publication of articles in
trade journals, participation in industry forums, and distribution of sales
literature. In addition, Zygo's strategic relationships with customers serve as
highly visible references.

         Zygo believes that its strong commitment to service is essential, based
on the growing complexity of the equipment used in the manufacturing process by
Zygo's customers. At June 30, 1997, Zygo's customer support and service staff
consisted of 23 persons. In addition, Zygo's distributors and sales
representatives offer a worldwide network for customer support, providing
24-hour on-demand maintenance services. The service engineers are skilled in
optical and electrical component repair, software, application and system
integration, diagnostic and problem solving capabilities. Zygo also offers
training programs and maintenance contracts for its customers.

                                       11


<PAGE>



                                     BACKLOG

         The Company's backlog at June 30, 1997 and 1996, was approximately
$38.7 million and $22.4 million, respectively. The significant increase from the
prior year end resulted primarily from stronger demand for all of the Company's
electro-optical instruments and systems, as well as an increase for custom
optical components driven by the contract awarded to Zygo by Lawrence Livermore
National Laboratory. The backlog of the Company's instruments and systems at
June 30, 1997, increased $8,363,000 (61.3%) from that at June 30, 1996. The
backlog of the Company's modules and components increased by $7,928,000 (90.5%)
from the year earlier. Substantially all of the backlog as of June 30, 1997, is
expected to be shipped in fiscal year 1998. Historically, cancellation or
reduction of orders has not had a significant impact on the Company's results of
operations.

                         RESEARCH AND DEVELOPMENT COSTS

         Information regarding the Company's research and development costs is
set forth in the Consolidated Statements of Earnings on page 15 of the Company's
1997 Annual Report, which statements are herein incorporated by reference. Zygo
operates in an industry that is subject to rapid technological change and
engineering innovation. Zygo distinguishes its instrument products on the basis
of its unique electro-optical sensor technology, its software capability, and
its skill in systems integration. Because Zygo believes that its ability to
compete effectively with its instruments and systems in its markets depends in
part on maintaining its expertise in applying new technologies and developing
new products, Zygo dedicates substantial resources to research and development.
At June 30, 1997, Zygo employed 60 individuals within its R&D operations,
including 18 individuals with advanced degrees of which nine individuals have
earned doctoral degrees. As an integral part of Zygo's product development
strategy, Zygo has formed technical relationships with several customers. Zygo's
strategy is to form close technical working relationships with the leading
suppliers in its markets and thereby develop products and systems which have the
greatest relevancy to the marketplace in general. In connection with its R&D
operations, Zygo also maintains a close working relationship with various
research groups and academic institutions in the United States as well as
abroad.

         Zygo believes that continued enhancement, development, and
commercialization of new and existing products and systems is essential to
maintaining and improving its leadership position. Zygo intends to direct its
research and development activities in several different areas. For example,
Zygo continues to seek to develop products that have greater measurement range
and precision to address new markets. Additionally, Zygo intends to continue to
add products that are automated in-process instruments and systems. There can be
no assurance that these efforts or any other product development efforts of Zygo
will be successful in producing products that respond to technological changes
or new products introduced by others.

                         PATENTS, LICENSES, TRADEMARKS,
                           AND PROPRIETARY INFORMATION

         Zygo relies on a combination of patent, copyright, trademark, and trade
secret laws and license agreements to establish and protect its proprietary
rights in its products. Zygo believes, however, that its success depends to a
greater extent upon innovation, technological expertise, and distribution
strength. Zygo requires each of its employees to enter into standard agreements
pursuant to which the employee agrees to keep confidential all proprietary
information of Zygo and to assign to Zygo all rights in any proprietary
information or technology made or contributed by the employee during his or her
employment or made thereafter as a result of any inventions conceived or work
done during such employment. Despite these precautions, it may be possible for a
third party to copy or otherwise obtain and use Zygo's products or technology
without authorization or to develop similar technology independently. In
addition, effective patent, copyright and trade secret protection may be
unavailable or limited in certain foreign countries.

                                       12


<PAGE>



         Zygo has been awarded 68 United States patents and 9 foreign patents
since the Company was founded, and has 14 United States patent applications and
7 foreign patent applications pending. Zygo, the Zygo logo, NexStar, and Sight
Systems are registered trademarks of Zygo Corporation. The Company also holds
several nonregistered trademarks including AAB System, AMS, GAPii, GPI, Growth
Potential Interferometer KMS, Maxim*GP, NewView 100, New View 200, Pegasus 2000,
ROBOii, VAC, ZMI-1000, ZMI-2000.

               MANUFACTURING, RAW MATERIALS, AND SOURCES OF SUPPLY

         Zygo's principal manufacturing activities are conducted at its
facilities in Middlefield, Connecticut; Sunnyvale, California; and Longmont,
Colorado. Zygo maintains a state-of-the-art optical components manufacturing
facility in Middlefield, specializing in the fabrication, polishing and coating
of plano (flat) optics for sales to third parties, as well as the manufacturing
of a wide variety of optics that are used in Zygo's instrument and automation
products. Zygo's manufacturing activities for its instruments and system
products consist primarily of assembling and testing components and
subassemblies some of which are supplied from within Zygo and others are
supplied by third party vendors and then integrated into Zygo's finished
products. Many of the components and subassemblies are standard products,
although certain items are made to Company specifications. Zygo also maintains
Computer Numerical Control (CNC) metal fabrication equipment for in-house
production of strategic metal formed components.

         Certain components and subassemblies incorporated into Zygo's systems
are obtained from a single source or a limited group of suppliers. Management
routinely monitors single or limited source supply parts, and Zygo endeavors to
ensure that adequate inventory is available to maintain manufacturing schedules
should the supply of any part be interrupted. Although Zygo seeks to reduce its
dependence on sole and limited source suppliers, it has not qualified a second
source for these products and the partial or complete loss of certain of these
sources could have an adverse effect on Zygo's results of operations and damage
customer relationships. To date, the Company has not experienced a significant
production delay from a parts shortage or loss of a single-source component.

         At its Middlefield operations, Zygo also maintains a state-of-the-art
fully integrated management information system which includes all business
modules (capacity planning, materials requirements planning, order entry,
financials, etc.) necessary to manage Zygo's growing operations there. Plans to
expand the system to Zygo's other operations are being developed.

                                    EMPLOYEES

         At fiscal year end, Zygo employed 399 men and women, including 233 in
manufacturing, 60 in research and development, 46 in sales and marketing, and 23
in customer service. To date, Zygo has been successful in attracting and
retaining qualified technical personnel, although there can be no assurance that
this success will continue. None of Zygo's employees are covered by collective
bargaining agreements or are members of a union. Zygo has never experienced a
work stoppage and believes that its relations with its employees are excellent.

                                SUBSEQUENT EVENTS

         Subsequent to the close of its fiscal 1997, Zygo completed the
acquisition of Sight Systems, Inc., a manufacturer of precision
application-specific machine vision metrology systems and Syncotec Neue
Technologien und Instrumente GmbH, a manufacturer of confocal components and
custom metrology tools for the German market. Zygo also announced the signing of
a letter of intent to acquire Digital Instruments, Inc. A brief description of
these businesses follows:

                                       13


<PAGE>



SIGHT SYSTEMS, INC. ACQUISITION

The Company completed its acquisition of Sight Systems, Inc. ("SSI"), a
privately held California-based business, for 287,400 shares of the Company's
common stock. The transaction will be accounted for as a pooling-of-interests.
SSI is engaged in the business of designing, developing, manufacturing, and
marketing application-specific machine vision systems. SSI serves the data
storage industry and the semiconductor industry with application-specific vision
systems which are primarily used in production by its customers. These vision
systems are unique in that they are configured from a vast collection of
software and hardware components into a system which meets specific customer
requirements. Examples of such applications in the data storage industry where
SSI has sold the majority of its systems to date include: pole geometry
measurements and gap width on various types of read/write heads, straightness,
and measurements of read/write heads mounted on row bars in the manufacturing
process.

SSI, located in Newbury Park, California, employs approximately 20 persons.
Approximately 50% of SSI's employees are engineers and are actively involved in
the design and development of configurable software and hardware components
which are customized into vision systems specific to customer needs. SSI
operates from a leased building where the manufacturing function is essentially
a systems and components integration and assembly function. SSI has a number of
suppliers for its hardware components and material availability has not been a
problem for SSI.

Sales are conducted on a direct basis to data storage industry customers and
through selected representatives, primarily selected for their proximity to key
geographic markets. Integration of the sales and marketing teams of Zygo and SSI
is intended to be accomplished during fiscal 1998.

SSI's sales in its fiscal year ended December 31, 1996 were approximately $3.5
million.

SYNCOTEC NEUE TECHNOLOGIEN UND INSTRUMENTE GMBH ACQUISITION

On June 30, 1997, TIC and Syncotec Neue Technologien und Instrumente GmbH
("Syncotec"), a German-based company, completed all necessary legal requirements
allowing for the appropriate transfer and registration of a 50 percent ownership
interest in Syncotec. The conclusion of this transaction completed commitments
made by the former owners of TIC and enabled the Company to release $440,000 of
contingent proceeds recorded as a liability at the time of the TIC acquisition
by the Company. Effective September 1, 1997, the Company, through TIC, completed
the purchase of the remaining 50 percent of Syncotec for approximately $2.0
million (subject to adjustment based on closing book value) in a combination of
cash and the Company's common stock.

Syncotec, located in Asslar, Germany, is a small manufacturer of confocal
modules and systems principally for the European market. Syncotec has had a
long-term relationship with TIC.

Employing approximately 10 persons, the company is focused on designing
solutions for local customers for their specific measurement problems utilizing
the TIC confocal scanning optical microscopy components, as well as other
locally designed hardware and software.

Syncotec occupies a small leased facility in Asslar, near Frankfurt, Germany.
Syncotec's sales in its fiscal year ended December 31, 1996 were approximately
$2.9 million (DM4.9 million).

DIGITAL INSTRUMENTS, INC. AND DIGITAL INSTRUMENTS GMBH

On July 28, 1997, the Company announced the signing of a letter of intent
providing for the Company's acquisition of Digital Instruments, Inc.
("Digital"), a privately held California-based entity that designs, develops,
and manufactures high precision measurement products and systems which use
scanning probe microscopy imaging and metrology technology. These systems are
used in product research and development applications as well as to improve the
production efficiency

                                       14


<PAGE>



and manufacturing yields within the data storage, semiconductor, and other high
technology industries. It is expected that the Company will acquire all the
outstanding stock of Digital and an affiliated corporation in exchange for
7,000,000 shares of the Company's common stock. Closing of the transaction will
be subject to various conditions, including approval by the stockholders of the
Company. The transaction is expected to be accounted for as a
pooling-of-interests, and is expected to be completed prior to the end of the
calendar year 1997. Digital's revenues for the year ended December 31, 1996 were
approximately $50 million.

         The remainder of this 10-K405 does not include any information
concerning Sight Systems, Inc., Syncotec, or Digital Instruments, Inc..

ITEM 2.  PROPERTIES

         The Company maintains manufacturing facilities in Middlefield,
Connecticut; Sunnyvale, California; and Longmont, Colorado, and maintains its
corporate headquarters on Laurel Brook Road in Middlefield, Connecticut. The
Middlefield facility consists of one 100,000-square-foot building on
approximately 13 acres. This facility is currently being expanded by 35,000
square feet to provide additional optical fabrication capacity and new office
area for sales, service, R&D, and administrative personnel. The Company also
owns 50 acres of undeveloped land adjacent to its principal facility. TIC
maintains its headquarters in a leased 20,000-square-foot building located in a
high technology area in Sunnyvale, California. This facility was recently
renovated to accommodate the additional manufacturing and office personnel.
NexStar's manufacturing activities are carried on from Longmont, Colorado, where
it occupies 21,000 square feet within a new leased facility. NexStar moved into
the facility in April 1997.

ITEM 3.  LEGAL PROCEEDINGS

         On June 29, 1988, Zygo filed suit in the U.S. District Court in Arizona
against WYKO Corporation for patent infringement based on the belief that the
WYKO 6000 interferometer infringed certain patents owned by Zygo. On March 1,
1993, the United States District Court (District of Arizona) rendered a
Memorandum Opinion and Findings of Fact and Conclusions of Law in the matter of
the patent suit. The conclusions of the court were that Zygo's patent is valid,
the WYKO Model 6000 interferometer infringes the Zygo patent, that WYKO
Corporation is liable to Zygo for any damages suffered as a result of WYKO's
infringement of Zygo's patents by making, selling, and using the WYKO Model 6000
interferometer, and that the amount of the monetary judgment and other relief
shall be determined following a trial on the issue of damages. The damage phase
of the trial was held from November 29, 1993 through December 6, 1993. The Court
rendered its judgment on June 2, 1994, awarding Zygo approximately $2.7 million
plus recovery of certain costs to be awarded by the Court which were incurred by
Zygo in connection with the conduct of the trial and entered a permanent
injunction prohibiting further sales of the WYKO Model 6000 interferometers
found to infringe. An appeal of the District Court's decision was filed by WYKO
on August 9, 1994 with the Court of Appeals for the Federal Circuit located in
Washington, D.C. The oral argument of the appeal was heard by the Court of
Appeals on March 9, 1995. On April 1, 1996, the Court of Appeals rendered an
Opinion Announcing Judgment of the Court. The appellate court affirmed-in-part
and reversed-in-part the District Court's earlier findings and remanded the case
to the District Court for a redetermination of the damage award. In its Opinion,
the appellate court reversed the District Court's opinion that certain WYKO
units infringed the Zygo patent on the basis of the doctrine of equivalents,
upheld the validity of Zygo's patent, and affirmed the District Court's opinion
that the original WYKO model 6000 infringed Zygo's patent. Zygo has not recorded
any gain from the District Court's earlier ruling and will not until a final
determination of the award is made.

                                       15


<PAGE>



ITEM 4.  SUBMISSION OF MATTERS TO A VOTE OF SECURITY HOLDERS

         None

                      EXECUTIVE OFFICERS OF THE REGISTRANT

GARY K. WILLIS - age 52
President and Chief Executive Officer of the Company since August 1993; from
     February 1992 until August 1993, President and Chief Operating Officer
Served as executive officer of the Company since February 1992

AHMAD AKRAMI - age 38
Vice President of the Company since August 1997; President of NexStar
     Corporation, a wholly-owned subsidiary of the Company since September 1996;
     President NexStar Automation, Inc. from January 4, 1993 to September 1996,
     consultant from October 1992 to January 1993; President of TechniStar
     Corporation from March 1989 until October 1992
Elected an executive officer of the Company in August 1997 subsequent to the end
     of fiscal 1996

WILLIAM H. BACON - age 48
Vice President, Director of Corporate Quality of the Company since January 1996;
     from November 1993 until January 1996, Director of Total Quality of the
     Company; from June 1987 until November 1993, Manager of Instrument
     Manufacturing Engineering of the Company
Served as executive officer of the Company since January 1996

MARK J. BONNEY - age 43
Vice President, Finance and Administration and Chief Financial Officer of the
     Company since March 1993 and Treasurer of the Company since November 1993;
     from October 1990 until February 1993, Vice President European Operations
     and Managing Director, Dynapert Limited, a Black & Decker Company
Served as executive officer of the Company since March 1993

FRANCIS E. LUNDY - age 59
Vice President of the Company since August 1997; President Technical Instrument
     Company from January 1985 to August 1996
Elected an executive officer of the Company in August 1997 subsequent to the end
     of fiscal 1996

ROBERT A. SMYTHE - age 46
Vice President, Director of Sales and Marketing of the Company since January
     1996; from June 1993 until January 1996, Director of Sales and Marketing of
     the Company; and from April 1992 until June 1993, served as Manager,
     Industry Marketing of the Company
Served as executive officer of the Company since January 1996

CARL A. ZANONI - age 56
Vice President, Research, Development and Engineering of the Company since
     April 1992
Served as executive officer of the Company since its inception in 1970

         Of the above executive officers, Mr. Willis and Mr. Zanoni are
directors of the Company. Under the By-laws, executive officers serve for a term
of one year and until their successors are chosen and qualified unless earlier
removed.

                                       16


<PAGE>


                                     PART II

ITEM 5. MARKET FOR THE REGISTRANT'S COMMON EQUITY AND RELATED 
        STOCKHOLDER MATTERS

         Information required by this item is included on page 27 (Stock Data)
and page 28 (Stockholder Information) and in note 1 on page 18 and note 13 on
page 21 in the Notes to Consolidated Financial Statements included in, the
Company's 1997 Annual Report and is herein incorporated by reference. The
Company's common shares are traded over-the-counter and are quoted on the
NASDAQ/National Market. The number of stockholders of record at June 30, 1997,
was 514.

ITEM 6.  SELECTED FINANCIAL DATA

         Information required by this item is included on page 9 (Five-Year
Summary) of the Company's 1997 Annual Report and is herein incorporated by
reference.

ITEM 7.  MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS
         OF OPERATIONS

         Information required by this item is included on pages 10 through 13
(Management's Discussion and Analysis of Results of Operations and Financial
Condition) of the Company's 1997 Annual Report and is herein incorporated by
reference.

ITEM 8.  FINANCIAL STATEMENTS AND SUPPLEMENTARY DATA

         Information required by this item is included on pages 14 through 27
(Consolidated Balance Sheets; Consolidated Statements of Earnings; Consolidated
Statements of Stockholders' Equity; Consolidated Statements of Cash Flows; Notes
to Consolidated Financial Statements; Report of Management; Report of
Independent Auditors; and Selected Consolidated Quarterly Financial Data) of the
Company's 1997 Annual Report and is herein incorporated by reference.

         The consolidated financial schedules of Zygo Corporation and
Consolidated Subsidiaries are filed as part of Item 14 of this Annual Report on
Form 10-K405.

ITEM 9.  CHANGES IN AND DISAGREEMENTS WITH ACCOUNTANTS ON ACCOUNTING AND
         FINANCIAL DISCLOSURE

         None.

                                    PART III

ITEM 10. DIRECTORS AND EXECUTIVE OFFICERS OF THE REGISTRANT

         Except for the information concerning executive officers which is set
forth in Part I of this report, information required by this item is included
under the captions "Election of Board of Directors" and "Other Agreements and
Other Matters" in the Proxy Statement to be filed pursuant to Regulation 14A for
use in connection with the Registrant's 1997 Annual Meeting of Stockholders
("the Proxy Statement") and is herein incorporated by reference.

ITEM 11. EXECUTIVE COMPENSATION

         Information required by this item is included in the Proxy Statement
under the caption "Executive Compensation" and is herein incorporated by
reference.

                                       17


<PAGE>



ITEM 12. SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS AND MANAGEMENT

         Information required by this item is included in the Proxy Statement
under the captions "Election of Board of Directors" and "Principal Stockholders"
and is herein incorporated by reference.

ITEM 13. CERTAIN RELATIONSHIPS AND RELATED TRANSACTIONS

         Information required by this item is included in the Proxy Statement
under the caption "Certain Relationships and Related Transactions" and is herein
incorporated by reference.

                                     PART IV

ITEM 14.  EXHIBITS, FINANCIAL STATEMENT SCHEDULES AND REPORTS ON FORM 8-K

(a) The following documents are filed as part of this report:

       1. and 2. Financial Statements and Financial Statement Schedules:

                 An index to the financial statements and financial statement
                 schedules filed is located on page F-1.

       3.        EXHIBITS

       3.(i)     Restated Certificate of Incorporation of the Company and
                 amendments thereto (Exhibit 3.(i) to the Company's Annual
                 Report on Form 10-K for its year ended June 30, 1993)*

       3.(ii)    Certificate of Amendment of Certificate of Incorporation, filed
                 June 3, 1996 (Exhibit 3.(ii) to the Company's Annual Report on
                 Form 10-K 405 for its year ended June 30, 1996)*

       3.(iii)   By-laws of the Company (Exhibit (3)(b) to Registration No.
                 2-87253 on Form S-1 hereinafter "Registration No. 2-87253")*

       4.1       Shareholders Agreement dated October 17, 1983, between Canon
                 Inc., Wesleyan University, Paul F. Forman, Carl A. Zanoni, and
                 Sol F. Laufer (Exhibit (4)(a) to Registration 2-87253)*

       10.1      Confidentiality and Non-Competition Agreement dated October
                 25, 1983, between the Company and Carl A. Zanoni (Exhibit
                 (10)(b) to Registration No. 2-87253)*

       10.2      Agreement dated May 27, 1975, between the Company and Canon
                 U.S.A., Inc., regarding information sharing and marketing
                 (Exhibit (10)(x) to Registration No. 2-87253)*

       10.3      Agreement dated November 20, 1980, between the Company and
                 Canon Inc. regarding exchange of information (Exhibit (10)(y)
                 to Registration No. 2-87253)*

       10.4      Zygo Corporation Profit Sharing Plan, as amended effective
                 June 30, 1985 (Exhibit 10.35 to the Company's Annual Report on
                 Form 10-K for its year ended June 30, 1985)*

*Incorporated herein by reference.

                                       18


<PAGE>



         10.5     First Amendment to the Zygo Corporation Profit Sharing Plan
                  (Exhibit 10.28 to the Company's Annual Report on Form 10-K for
                  its year ended June 30, 1989)*

         10.6     Second Amendment to the Zygo Corporation Profit Sharing Plan
                  (Exhibit 10.29 to the Company's Annual Report on Form 10-K for
                  its year ended June 30, 1989)*

         10.7     Third Amendment to the Zygo Corporation Profit Sharing Plan
                  (Exhibit 10.30 to the Company's Annual Report on Form 10-K for
                  its year ended June 30, 1989)*

         10.8     Fourth Amendment to the Zygo Corporation Profit Sharing Plan
                  (Exhibit 10.31 to the Company's Annual Report on Form 10-K for
                  its year ended June 30, 1989)*

         10.9     Amended and Restated Zygo Corporation Profit Sharing Plan
                  (Exhibit 10.15 to the Company's Annual Report on Form 10-K405
                  for its year ended June 30, 1995)*

         10.10    Canon/Zygo Confidentiality Agreement dated March 7, 1990,
                  between the Company and Canon Inc. regarding confidential
                  technical information received from each other (Exhibit 10.42
                  to the Company's Annual Report on Form 10-K for its year ended
                  June 30, 1991)*

         10.11    Employment Agreement dated February 13, 1992, relating to the
                  employment of Gary K. Willis by the Company (Exhibit 10.38 to
                  the Company's Annual Report on Form 10-K for its year ended
                  June 30, 1992)*

         10.12    Amendment, dated August 26, 1993, to the Employment Agreement
                  dated February 13, 1992, between Gary K. Willis and the
                  Company (Exhibit 10.22 to the Company's Annual Report on Form
                  10-K for its year ended June 30, 1993)*

         10.13    Second Amendment, dated March 10, 1995, to the Employment
                  Agreement dated February 13, 1992, between Gary K. Willis and
                  the Company (Exhibit 10.19 to the Company's Annual Report on
                  Form 10-K405 for its year ended June 30, 1996)*

         10.14    Stock Purchase Agreement dated March 4, 1992, relating to the
                  purchase of Company Common Stock by Gary K. Willis from
                  Wesleyan University (Exhibit 10.39 to the Company's Annual
                  Report on Form 10-K for its year ended June 30, 1992)*

         10.15    Services Agreement dated August 26, 1993, between the Company
                  and Paul F. Forman (Exhibit 10.26 to the Company's Annual
                  Report on Form 10-K for its year ended June 30, 1993)*

         10.16    Amendment Agreement dated as of December 31, 1996, between the
                  Company and Paul F. Forman.

         10.17    Non-Competition Agreement dated August 26, 1993, between the
                  Company and Paul F. Forman (Exhibit 10.27 to the Company's
                  Annual Report on Form 10-K for its year ended June 30, 1993)*

         10.18    Zygo Corporation Amended and Restated Non-Qualified Stock
                  Option Plan ratified and approved by the Company's
                  Stockholders on November 19, 1992 (Exhibit 10.30 to the
                  Company's Annual Report on Form 10-K for its year ended June
                  30, 1993)*

*Incorporated herein by reference.

                                       19


<PAGE>



         10.19    Employment Agreement dated March 1, 1993, between Mark J.
                  Bonney and the Company (Exhibit 10.31 to the Company's Annual
                  Report on Form 10-K for its year ended June 30, 1993)*

         10.20    Amendment, dated March 12, 1996, to the Employment Agreement
                  dated March 1, 1993, between Mark J. Bonney and the Company
                  (Exhibit 10.21 to the Company's Annual Report on Form 10-K 405
                  for its year ended June 30, 1996)*

         10.21    Termination Agreement dated November 30, 1993, covering the
                  termination of the Shareholders' Agreement between Canon Inc.,
                  Wesleyan University, Paul F. Forman, Carl A. Zanoni, and Sol
                  F. Laufer dated October 17, 1983 (Exhibit 10.33 to the
                  Company's Annual Report on Form 10-K for its year ended June
                  30, 1994)*

         10.22    Registration Rights Agreement dated November 30, 1993, between
                  Canon Inc., Wesleyan University, Paul F. Forman, Carl A.
                  Zanoni, Sol F. Laufer, and the Company (Exhibit 10.34 to the
                  Company's Annual Report on Form 10-K for its year ended June
                  30, 1994)*

         10.23    Renewal of Line of Credit dated June 3, 1997, between the
                  Company and Fleet Bank Connecticut, N.A.

         10.24    Zygo Corporation Non-Employee Director Stock Option Plan
                  ratified and approved by the Company's stockholders on
                  November 17, 1994 (Exhibit 10.30 to the Company's Annual
                  Report on Form 10-K405 for its year ended June 30, 1996)*

         10.25    Agreement and Plan of Merger, dated as of August 7, 1996, by
                  and among the Company, Technical Instrument Company, Zygo
                  Acquisition Corporation, Francis E. Lundy, the Lundy 1996
                  Charitable Trust, The Sherman Family Living Trust, Frank J.
                  Scheufele Trust, David Lytle, and Inspectron Development
                  Partners L.P., a California Limited Partnership (Exhibit 2 to
                  the Company's Current Report on Form 8-K dated August 19,
                  1996)*

         10.26    Employment Agreement, dated August 7, 1996, between Technical
                  Instrument Company and Francis E. Lundy (Exhibit 10.27 to the
                  Company's Annual Report on Form 10-K 405 for its year ended
                  June 30, 1996)*

         10.27    Acquisition Agreement, dated August 12, 1996, among the
                  Company, NX Acquisition Corporation, and NexStar Automation,
                  Incorporated (Exhibit 2 to the Company's Current Report on
                  Form 8-K dated September 27, 1996)*

         10.28    Employment Agreement, dated September 12, 1996, between
                  NexStar Corporation and Ahmad Akrami (Exhibit 10.29 to the
                  Company's Annual Report on Form 10-K 405 for its year ended
                  June 30, 1996)*

         10.29    Acquisition Agreement dated August 19, 1997, by and among Zygo
                  Corporation, Sight Systems, Inc., and the Shareholders of
                  Sight Systems, Inc.

         10.30    Stock Purchase Agreement dated September 1, 1997, between
                  Technical Instrument Company and Syncotec Neue Technologien
                  und Instrumente GmbH

         10.31    Subcontract B335188 between The Regents of The University of
                  California Lawrence Livermore National Laboratory and Zygo
                  Corporation dated May 9, 1997

*Incorporated herein by reference.

                                       20


<PAGE>



         10.32    Agreement between Zygo Corporation and Dacon Corporation
                  covering an addition to the Company's Middlefield,
                  Connecticut, facilities (Project 1774) and the N.I.F.
                  Manufacturing Renovation (Project 1842) dated April 7, 1997

         10.33    Employment Agreement dated August 19, 1997, between Sight
                  Systems, Inc. and David Grant

         11.      For computation of per share earnings see note 1 of the Notes
                  to Consolidated Financial Statements in the 1997 Annual Report
                  included herewith, which note is incorporated herein by
                  reference

         13.      Specified portions of 1997 Annual Report to Stockholders (such
                  portions are furnished solely for the information of the
                  Commission and are not filed herewith, except for those
                  portions expressly incorporated herein by reference.)

         21.      Subsidiaries of Registrant

         23.      Accountants' Consent

         24.      Power of Attorney

         27.      Financial Data Schedule

 (b)     Reports on Form 8-K

No reports on Form 8-K have been filed during the last quarter of the period
covered by this report.

*Incorporated herein by reference.

                                       21


<PAGE>


                                   SIGNATURES

     Pursuant to the requirements of Section 13 or 15(d) of the Securities
Exchange Act of 1934, the registrant has duly caused this report to be signed on
its behalf by the undersigned, thereunto duly authorized.

       ZYGO CORPORATION
- ---------------------------------
          Registrant

By /s/ Mark J. Bonney                                    Date September 16, 1997
- ---------------------------------                             ------------------
      Mark J. Bonney
      Vice President, Finance
      and Administration

     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 and on the dates indicated.

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

/s/ Gary K. Willis         President, Chief Executive    Date September 16, 1997
- -------------------------  Officer and Director               ------------------
    Gary K. Willis         


/s/ Mark J. Bonney         Vice President, Finance and   Date September 16, 1997
- -------------------------  Administration, Treasurer,         ------------------
    Mark J. Bonney         and Chief Financial Officer


/s/ Carl A. Zanoni         Vice President, Research,     Date September 16, 1997
- -------------------------  Development and Engineering        ------------------
    Carl A. Zanoni         and Director


 Paul F. Forman*           Chairman of the Board
- -------------------------  
    (Paul F. Forman)


 Michael R. Corboy*        Director
- -------------------------  
    (Michael R. Corboy)


 Seymour E. Liebman*       Director
- -------------------------  
    (Seymour E. Liebman)


 Robert G. McKelvey*       Director
- -------------------------  
    (Robert G. McKelvey)


 Paul W. Murrill*          Director
- -------------------------  
    (Paul W. Murrill)


 John R. Rockwell*         Director
- -------------------------  
    (John R. Rockwell)


 Robert B. Taylor*         Director
- -------------------------  
    (Robert B. Taylor)

*By /s/  Mark J. Bonney                                  Date September 16, 1997
- -------------------------                                     ------------------
      Mark J. Bonney
      Attorney-in-Fact

                                       22
<PAGE>



                  ZYGO CORPORATION AND CONSOLIDATED SUBSIDIARY

                   INDEX TO FINANCIAL STATEMENTS AND SCHEDULE

Page

*        Independent Auditors' Report

*        Consolidated balance sheets at June 30, 1997, and 1996

*        Consolidated statements of earnings for the years ended June 30, 1997,
         1996, and 1995

*        Consolidated statements of stockholders' equity for the years ended
         June 30, 1997, 1996, and 1995

*        Consolidated statements of cash flows for the years ended June 30,
         1997, 1996, and 1995

*        Notes to consolidated financial statements

*        Selected consolidated quarterly financial data for the years ended June
         30, 1997, and 1996

Consolidated Schedules

F-2      Independent Auditors' Report on Schedule

F-3      VIII -   Valuation and qualifying accounts

         All other schedules have been omitted since the required information is
not present or not present in amounts sufficient to require submission of the
schedules or the information required is included in the consolidated financial
statements or notes thereto.

*Incorporated herein by reference to Zygo Corporation 1997 Annual Report to
 Stockholders.

                                       F-1


<PAGE>






                    INDEPENDENT AUDITORS' REPORT ON SCHEDULE

The Board of Directors
Zygo Corporation:

Under date of August 8, 1997, we reported on the consolidated balance sheets of
Zygo Corporation and subsidiaries as of June 30, 1997, and 1996, and the related
consolidated statements of earnings, stockholders' equity and cash flows for
each of the years in the three-year period ended June 30, 1997 as contained in
the 1997 annual report to stockholders. These consolidated financial statements
and our report thereon are incorporated by reference in the annual report on
Form 10-K405 for the fiscal year ended June 30, 1997. In connection with our
audits of the aforementioned consolidated financial statements, we also audited
the related consolidated financial statement schedule listed in the accompanying
index. This financial statement schedule is the responsibility of the Company's
management. Our responsibility is to express an opinion on this financial
statement schedule based on our audits.

In our opinion, this financial statement schedule, when considered in relation
to the basic consolidated financial statements taken as a whole, presents
fairly, in all material respects, the information set forth therein.

KPMG PEAT MARWICK LLP



Hartford, Connecticut
August 8, 1997




                                       F-2


<PAGE>


                  ZYGO CORPORATION AND CONSOLIDATED SUBSIDIARY

                SCHEDULE VIII - VALUATION AND QUALIFYING ACCOUNTS

                    YEARS ENDED JUNE 30, 1997, 1996, AND 1995

                               Balance                              Balance
                             at Beginning                           at End
Description                   of Period    Provision   Write-Offs  of Period
- -----------                   ---------    ---------   ----------  ---------

YEAR ENDED JUNE 30, 1997*:
  ALLOWANCE FOR DOUBTFUL
    ACCOUNTS                  $  733,000  $   15,146  $   20,146  $  728,000

  INVENTORY RESERVE           $1,321,850  $  395,500  $  239,900  $1,477,450

Year Ended June  30, 1996**:
  Allowance for Doubtful
    Accounts                  $  137,655  $  153,402  $   24,057  $  267,000

  Inventory Reserve           $  419,147  $  581,253  $   85,350  $  915,050

Year Ended June 30, 1995:
  Allowance for Doubtful
    Accounts                  $   70,981  $   74,584  $    7,910  $  137,655

  Inventory Reserve           $  267,183  $  248,576  $   96,612  $  419,147




*Includes opening balances of TIC corporation purchased August 8, 1996
  Allowance for Doubtful
    Accounts                                $466,000

  Inventory Reserves                        $406,800

**1996 restated to include NexStar activity 1996


                                       F-3


<PAGE>


                                  EXHIBIT INDEX

      EXHIBIT
       TABLE                                                        FORM 10-K405
       NUMBER                                                        PAGE NUMBER
       ------                                                        -----------

        10.16   Amendment Agreement dated as of December 31, 1996,
                between the Company and Paul F. Forman.

        10.23   Renewal of Line of Credit dated June 3, 1997, between
                the Company and Fleet Bank

        10.29   Acquisition Agreement dated August 19, 1997, by and
                among Zygo Corporation, Sight Systems, Inc., and the
                Shareholders of Sight Systems, Inc.

        10.30   Stock Purchase Agreement dated September 1, 1997,
                between Technical Instrument Company and Syncotec Neue
                Technologien und Instrumente GmbH

        10.31   Subcontract B335188 between The Regents of The
                University of California Lawrence Livermore National
                Laboratory and Zygo Corporation dated May 9, 1997

        10.32   Agreement between Zygo Corporation and Dacon
                Corporation covering an addition to the Company's
                Middlefield, Connecticut, facilities (Project 1774)
                and the N.I.F. Manufacturing Renovation (Project 1842)
                dated April 7, 1997

        10.33   Employment Agreement dated August 19, 1997, between
                Sight Systems, Inc. and David Grant

        11.     For computation of per share earnings, see note 1 of
                the Notes to Consolidated Financial Statements in the
                1997 Annual Report included herewith, which note is
                incorporated herein by reference

        13.     Specified portions of 1997 Annual Report to
                Stockholders (such portions are furnished solely for
                the information of the Commission and are not filed
                herewith, except for those portions expressly
                incorporated herein by reference.)

        21.     Subsidiaries of Registrant

        23.     Accountants' Consent

        24.     Power of Attorney

        27.     Financial Data Schedule



                               AMENDMENT AGREEMENT

     AMENDMENT AGREEMENT, dated as December 31, 1996, between ZYGO CORPORATION,
a Delaware corporation with an office at Laurel Brook Road, Middlefield,
Connecticut 06455 (the "Company"), and PAUL F. FORMAN, residing at 15 Flying
Point Road, Stony Creek, Connecticut 06405 ("Forman").

                              W I T N E S S E T H:

     WHEREAS, the Company and Forman are parties to that certain Services
Agreement, dated as of August 26, 1993 (the "1993 Services Agreement"); and,

     WHEREAS, the parties hereto desire to amend the 1993 Services Agreement, as
set forth herein.

     NOW, THEREFORE, for good and valuable consideration, the receipt and
sufficiency of which are hereby acknowledged, the parties hereto agree as
follows:

     1. Section 3 of the 1993 Services Agreement is hereby amended by deleting
the date "June 30, 1999" and substituting therefor the date "September 30,
1999".

     2. Section 4(c) of the 1993 Services Agreement is hereby amended by
deleting subsections (iv) and (v) thereof in their entirety and substituting
therefor the following:

         "(iv) During each of the fourth and fifth years of the Consulting
               Period (i.e., July 1, 1997 through June 30, 1998 and July 1, 1998
               through June 30, 1999), an amount equal to the sum of (x) 20% of
               the Base Amount plus (y) $20,000 (as a Stipend); and

          "(v) During the last three months of the Consulting Period (i.e., July
               1, 1999 through September 30, 1999), an amount equal to 5% of the
               Base Amount."

     3. Section 9(b) of the 1993 Services Agreement is hereby amended by
deleting the last sentence of the first paragraph thereof in its entirety and
substituting therefor the following:

     "Notwithstanding anything to the contrary contained herein, Forman shall
not be required to render in excess of 32 hours, 24 hours, 16 hours, 8 hours, 8
hours and 8 hours per week (on the basis of a 45 week/year) of consulting
services hereunder

<PAGE>


during the first, second, third, fourth, fifth and three-month period of the
sixth years, respectively, of the Consulting Period."

     4. From and after the execution of this Amendment Agreement, all references
(x) in the 1993 Services Agreement to "this Agreement" and (y) in the
Non-Competition Agreement, dated as of August 26, 1993 (the "1993
Non-Competition Agreement"), between the Company and Forman, to "the Services
Agreement", shall refer to the 1993 Services Agreement as amended hereby.

     5. Except as expressly amended hereby, all provisions of the 1993 Services
Agreement and 1993 Non-Competition Agreement are and shall remain in full force
and effect.

     6. This Amendment Agreement shall be governed by the laws of the State of
Connecticut applicable to agreements made and to be performed therein and both
parties agree to submit to the jurisdiction of the laws of Connecticut.

     7. This Amendment Agreement may be executed in any number of counterparts
and by the different parties hereto on separate counterparts, each of which when
so executed and delivered shall be an original, but all of which shall together
constitute one and the same instrument.

     IN WITNESS WHEREOF, the parties hereto have executed this Amendment
Agreement as of the date and year first above written.


                                          ZYGO CORPORATION


                                          By: /s/ GARY K. WILLIS
                                              ---------------------------
                                                  Gary K. Willis

 
                                              /s/ PAUL F. FORMAN
                                              ------------------------------
                                                  Paul F. Forman





                                 LOAN AGREEMENT

This Agreement is dated this 3rd day of June, 1997, by and between FLEET
NATIONAL BANK, a national banking association with an office at 777 Main Street
Hartford, Connecticut, 06115 (the "LENDER") and ZYGO CORPORATION, P.O. Box 448,
Middlefield, Connecticut 06445-0448 ("Borrower").

SECTION 1. Definitions. For purposes of this Agreement, the following terms
shall have the meanings specified below:

      a.    "Affiliate" means (i) any person directly or indirectly
            controlling or controlled by or under direct or indirect common
            control with the Borrower or any other obligor of the
            Obligations, as the case may be (including, without limitation,
            any respective director or officer of the Borrower or any other
            obligor of the Obligations, as the case may be), and (ii) any
            corporation or other organization of which the Borrower owns
            more than fifty percent (50%) of the voting securities of such
            entity.

      b.    "Capital Assets" means assets that in accordance with GAAP are
            required or permitted to be depreciated or amortized on the
            Borrower's balance sheet.

      c.    "Capital Leases" means capital leases, conditional sales contracts
            and other title retention agreements relating to the purchase or
            acquisition of Capital Assets.

      d.    "Code" means the Internal Revenue Code of 1986, as amended, or any
            successor federal tax code, and any reference to any provision shall
            be deemed to include a reference to any successor provision or
            provisions.

      e.    "Current Assets" means current assets as determined in accordance
            with GAAP.

      f.    "Current Liabilities" means current liabilities as determined in
            accordance with GAAP.

      g.    "Current Ratio" means Current Assets divided by Current
            Liabilities.

      h.    "Date of Closing" means the date on which this Agreement and the
            Note are executed by Borrower.

      i.    "Debt" means the Total Liabilities of the Borrower.

      j.    "Environmental Laws" means any and all applicable federal, state and
            local environmental, health or safety statutes, laws, regulations,
            rules, ordinances, guidances, policies and rules or common law
            (whether now existing or hereafter


                                       -1-

<PAGE>

             enacted or promulgated), of all governmental agencies, bureaus or
             departments which may now or hereafter have jurisdiction over
             Borrower or Borrower's property and all applicable judicial and
             administrative and regulatory decrees, judgments and orders,
             including common law rulings and determinations, relating to injury
             to, or the protection of, real or personal property or human health
             or the environment, including, without limitation, all requirements
             pertaining to reporting, licensing, permitting, investigation,
             remediation and removal of emissions, discharges, releases or
             threatened releases of Hazardous Materials, chemical substances,
             pollutants or contaminants whether solid, liquid or gaseous in
             nature, into the environment or relating to the manufacture,
             processing, distribution, use, treatment, storage, disposal,
             transport or handling of such Hazardous Materials, chemical
             substances, pollutants or contaminants.

      k.    "ERISA" means the Employee Retirement Income Security Act of 1974
            and all rules and regulations promulgated pursuant thereto, as the
            same may from time to time be supplemented or amended.

      l.    "Event of Default" shall have the meaning assigned in Section 6
            hereof.

      m.    "GAAP" means generally accepted accounting principles in the United
            States of America, as from time to time in effect.

      n.    "Hazardous Material" means any substance: (i) the presence of
            which requires or may hereafter require notification,
            investigation, monitoring or remediation under any Environmental
            Law; (ii) which is or becomes defined as a "hazardous waste",
            "hazardous material" or "hazardous substance" or "toxic
            substance" or "pollutant" or "contaminant" under any present or
            future Environmental Law or amendments thereto including,
            without limitation, the Comprehensive Environmental Response,
            Compensation and Liability Act (42 U.S.C. Section 9601 et seq.)
            and any applicable local statutes and the regulations
            promulgated thereunder; (iii) which is toxic, explosive,
            corrosive, reactive, ignitable, infectious, radioactive,
            carcinogenic, mutagenic or otherwise hazardous and is or becomes
            regulated by any governmental authority, agency, department,
            commission, board, agency or instrumentality of any foreign
            country, the United States, any state of the United States, or
            any political subdivision thereof to the extent any of the
            foregoing has or had jurisdiction over Borrower or of Borrower's
            property; or (iv) without limitation, which contains gasoline,
            diesel fuel or other petroleum products, asbestos or
            polychlorinated biphenyls.

      o.    "Indebtedness" of an entity means such entity's (i) obligations
            for borrowed money, (ii) obligations representing the deferred
            purchase price of property other than accounts payable arising in
            the ordinary course of such entity's business on terms customary
            in the trade, (iii) obligations, whether or not assumed, secured
            by a lien on, or payable out of the proceeds or production from,
            property now or hereafter

                                       -2-


<PAGE>



            owned or acquired by such entity, (iv) obligations which are
            evidenced by bonds, debentures, notes, acceptances, or other
            instruments and (v) Capital Lease obligations.

      p.    "IRS" means the United States Internal Revenue Service.

      q.    "Loan" means the Loan evidenced by the Note.

      r.    "Loan Documents" shall have the meaning assigned in Section 3.3
            hereof

      s.    "Net Worth" means Total Assets less Total Liabilities.

      t.    "Note" means promissory note of Borrower dated the same date as
            this Agreement in the original principal amount of $3,000,000.

      u.    "Obligations" means and includes all loans, advances, interest,
            indebtedness, liabilities, obligations, guaranties, covenants and
            duties at any time owing by the Borrower to Lender of every kind and
            description, whether or not evidenced by any note or other
            instrument, whether or not for the payment of money, whether direct
            or indirect, absolute or contingent, due or to become due, now
            existing or hereafter arising, including, but not limited to, the
            Loan and all other indebtedness, liabilities and obligations arising
            under this Agreement and the other Loan Documents and all costs,
            expenses, fees, charges and attorneys', paralegals' and professional
            fees incurred in connection with any of the foregoing, or in any way
            connected with, involving or relating to the preservation,
            enforcement, protection or defense of, or realization under this
            Agreement, the Note, any of the other Loan Documents, any related
            agreement, document or instrument and the rights and remedies
            hereunder or thereunder, and in connection with any "workout" or
            default resolution negotiations involving legal counsel or other
            professionals and any re-negotiation or restructuring of any of the
            Obligations.

      v.    "PBGC" shall have the meaning assigned in Section 5.21a.

      w.    "Plan" means any employee benefit plan or other plan maintained for
            employees of Borrower or any related entity covered by Title I of
            ERISA.

      x.    "Property" shall have the meaning assigned in Section 5.5 hereof.

      y.    "Total Assets" means total assets determined in accordance with
            GAAP.

      z.    "Total Liabilities" means all liabilities determined in accordance
            with GAAP.

                                       -3-

<PAGE>


SECTION 2. The Loan Transaction.

2.1.          The Loan. Lender shall lend to the Borrower the sum of
              $3,000,000. The Borrower's obligations to repay the Loan are as
              contained in this Agreement and the Note, a copy of which is
              attached to this Agreement as SCHEDULE 2.1. The Borrower shall
              pay an annual line of credit fee in the amount of $7,500 which
              shall be payable in quarterly installments of $1,875 on the
              first day of January, April, July and October of each year. The
              Loan shall be payable upon DEMAND. There shall be no principal
              amount outstanding on the Loan for a period of 30 consecutive days
              in each fiscal year of Borrower. The Loan shall terminate on
              November 26, 1997.

2.2.          Advances. Lender shall make advances to Borrower under the Loan in
              an aggregate amount not to exceed $3,000,000 provided no defaults
              or Events of Default exist at the time of the advance.

2.3.          Payments on the Loan.

              a.  Regularly Scheduled Payments. Regularly scheduled payments
                  on the Loan shall be made in accordance with the Note.

              b.  Additional Payments. If Lender shall deem applicable to
                  this Agreement, the Loan or the Note (including the
                  borrowed and the unused portion thereof) any requirement
                  of any law of the United States of America, any
                  regulation, order, interpretation, ruling or official
                  directive or guideline (whether or not having the force of
                  law) of the Board of Governors of the Federal Reserve
                  System, the Comptroller of the Currency, the Federal
                  Deposit Insurance Corporation or any other board or
                  governmental or administrative agency of the United States
                  of America which shall impose, increase, modify or make
                  applicable thereto or cause to be included in, any
                  reserve, special deposit, capital adequacy, calculation
                  used in the computation of regulatory capital standards,
                  assessment or other requirement which imposes on Lender or
                  any entity that controls Lender any cost that is
                  attributable to the maintenance thereof, then, and in each
                  such event, Borrower shall promptly pay Lender, upon its
                  demand, such amount as will compensate Lender for any such
                  cost, which determination may be based upon Lender's
                  reasonable allocation of the aggregate of such costs
                  resulting from such events. In the event any such cost is
                  a continuing cost, a fee payable to Lender may be imposed
                  upon Borrower periodically for so long as any such cost is
                  deemed applicable by Lender, in an amount determined by
                  Lender to be necessary to compensate Lender for any such
                  cost. The determination by Lender of the existence and
                  amount of any such cost shall, in the absence of manifest
                  error, be conclusive.


                                       -4-


<PAGE>


SECTION 3. Representations, Warranties and General Covenants. In order to
induce Lender to enter into this Agreement, Borrower represents, warrants
and covenants the following:

3.1.          Organization and Qualification. It is and will continue to be a
              corporation duly organized, validly existing and in good standing
              under the laws of the state of its incorporation and is and will
              continue to be duly qualified and licensed to do business in each
              other state in which it is required to be so qualified and/or
              licensed.

3.2.          Corporate Records. The Certificate of Incorporation and all
              amendments thereto of the Borrower have been duly filed and are in
              proper order. All books and records of Borrower, including but not
              limited to its bylaws, minute books and books of account, are
              accurate and up to date and will be so maintained.

3.3.          Power and Authority. Borrower has the power to execute, deliver
              and carry out the terms of this Agreement, the Note, and all other
              documents evidencing, securing and guarantying the Loan (the "Loan
              Documents") and to incur the Obligations and each has taken all
              necessary action to authorize the execution, delivery and
              performance of the Loan Documents.

3.4.          No Legal Bar. The execution and delivery of the Loan Documents
              and compliance by Borrower with the terms and provisions
              thereof will not violate any provision of any existing law or
              regulation or any writ or decree of any court or governmental
              instrumentality, or any agreement or instrument to which it is
              a party or which is binding upon it or its assets, and will not
              result in the creation or imposition of any lien, security
              interest, charge or encumbrance of any nature whatsoever upon
              or in any of its assets, except as contemplated by the Loan
              Documents; and no consent of any other party, and no consent,
              license, approval or authorization of or registration or
              declaration with any governmental bureau or agency, is required
              in connection with the execution, delivery, performance,
              validity and enforceability of any of the Loan Documents.

3.5.          Title. Borrower has good and marketable title to all of its
              property and assets (the "Property").

3.6.          No Material Litigation. There is no material litigation or
              administrative proceeding of or before any governmental body which
              is presently pending-or, to the knowledge of Borrower, threatened
              against it or any of its Property.

3.7.          No Default. Borrower is not in default with respect to the payment
              or performance of any of its Obligations or in the performance of
              any covenants or conditions to be performed by it pursuant to the
              terms and provisions of any indenture, agreement or instrument to
              which it is a party or by which it is bound, and Borrower has not
              received a notice of default thereunder.


                                       -5-


<PAGE>


3.8.          Compliance with Laws. Borrower has complied with and will continue
              to comply with all applicable statutes and regulations of the
              United States of America, and all states, counties, municipalities
              and agencies of any governmental authority thereof.

3.9.          Taxes. Borrower has filed or caused to be filed or obtained
              extensions for the filing of, and will continue to file and
              cause to be filed, all federal, state and local tax returns
              required by law to be filed, and has paid and will continue to
              pay all taxes shown to be due and payable on such returns or on
              any assessment made against it, except if being contested in
              good faith and adequate provision has been made therefor on
              Borrower's books of account. No claims are being asserted with
              respect to such taxes which are not reflected in the financial
              statements which have been furnished by Borrower to Lender.

3.10.         Financial Condition. Borrower has submitted to Lender various
              financial statements and information as of September 30, 1996.
              Borrower represents that all of such financial information is
              true and correct; that such financial information fairly
              presents the financial condition and results of operations of
              Borrower as of the dates thereof and for the periods indicated
              therein; that such financial statements have been prepared in
              accordance with GAAP and practices consistently maintained
              throughout the periods involved; and that, as of the date of
              such financial information, there were no material unrealized
              or anticipated losses from any unfavorable commitments of
              Borrower and that there has been no material adverse change in
              the business or Property or in the condition, financial or
              otherwise, of Borrower from that set forth in such financial
              statements. Since the date of such financial statements there
              has not occurred any material adverse change in the condition,
              financial or otherwise, business, operations, properties or
              prospects of Borrower.

3.11.         Accuracy of Representations. No representation, warranty or
              statement by Borrower contained in any Loan Document or
              certificate or other document furnished or to be furnished by
              Borrower pursuant to this Agreement or in connection with the
              transactions contemplated under this Agreement, contains, or at
              the time of delivery will contain, any untrue statement of
              material fact or omits or will omit to state a material fact
              necessary to make it not misleading.

3.12.         Trade Names. Borrower operates its business under its name as
              set forth in this Agreement and has no other trade names.

3.13.         Collective Bargaining Agreements. Borrower is not a party to
              any collective bargaining agreements.

3.14.         Saleable Value of Assets. The fair saleable value of the assets
              of Borrower, after giving effect to the transactions
              contemplated by the Loan Documents, will not be

                                       -6-


<PAGE>


              in excess of its debts (including contingent, subordinated,
              unmatured and unliquidated liabilities).

3.15.         Sufficient Cash Flow. Borrower has, and after giving effect to
              the transactions contemplated by the Loan Documents will have,
              sufficient cash flow to continue to operate its business in the
              ordinary course as heretofore conducted, make the payments
              called for by the Loan Documents and pay all other debts,
              including but not limited to payments under the Note, supplier
              payments, pension and other employee benefit plan liabilities,
              business expenses and taxes, as the same shall become due.

3.16.         No Hindrance. Borrower has no intent to hinder, delay or
              defraud any entity to which it is or will become indebted.

3.17.         Ability to Pay Debts. Borrower, after giving effect to the
              transactions contemplated by the Loan Documents, does not intend
              to incur nor does it believe that it will incur debts beyond its
              ability to pay as they become due.

3.18.         Ownership of Property. Borrower does not have in its possession
              any personal property of which it is not the actual owner,
              except as described on SCHEDULE 3.19.

3.19.        Subsidiaries and Affiliates. Borrower has no subsidiaries or
             affiliates except as described on SCHEDULE 3.20 attached hereto.

3.20.        Pension Plans.

             a.   No event, including but not limited to any "reportable
                  event", as that term is defined in Section 4043 of ERISA
                  exists in connection with any of its Plans and any
                  entities related to it under Section 414(b,), (c), (m),
                  (n) or (o) of the Code has occurred which might constitute
                  grounds for termination of any such Plan by the Pension
                  Benefit Guaranty Corporation (the "PBGC"), or for the
                  appointment by the appropriate United States District
                  Court of a trustee to administer any such Plan. A list of
                  all of its Plans are attached hereto on SCHEDULE 3.21a;

             b.   No "prohibited transaction" within the meaning of Section 406
                  of ERISA or Section 4975 of the Code exists or will exist upon
                  the execution and delivery of this Agreement and the other
                  Loan Documents, or the performance by the Borrower of its
                  duties and obligations hereunder and thereunder;

             c.   It has no unfunded liability in contravention of ERISA and the
                  Code;

                                       -7-


<PAGE>


             d.   Each of the Plans complies currently, and has complied in the
                  past, both as to form and operation, with its terms and with
                  the provisions of the Code and ERISA, and all applicable
                  regulations thereunder and all applicable rules issued by the
                  Internal Revenue Service, U.S. Department of Labor and the
                  PBGC and as such, is and remains a "qualified" plan under the
                  Code;

             e.   No actions, suits or claims are pending (other than routine
                  claims for benefits) against any Plan or the assets of any
                  Plan;

             f.   It has performed all obligations required to be performed by
                  it under any Plan set forth in SCHEDULE 3.21a and it is not in
                  default or in violation of any Plan, and has no knowledge of
                  any such default or violation by any other party to any such
                  Plans;

             g.   It has incurred no liability to the PBGC or to participants or
                  beneficiaries on account of any termination of a Plan subject
                  to Title IV of ERISA, no notice of intent to terminate a Plan
                  has been filed by (or on behalf of) it pursuant to Section
                  4041 of ERISA and no proceeding has been commenced by the PBGC
                  pursuant to Section 4042 of ERISA;

             h.   It is not subject to any reporting or disclosure provisions of
                  the Securities Act of 1933 or the Securities Exchange Act of
                  1934 with respect to any Plan

3.21.       Environmental Matters. Except as described on SCHEDULE 3.22
            attached hereto:

            a.    It has obtained all permits, licenses and other
                  authorizations which are required under all Environmental
                  Laws. It is in compliance with the terms and conditions of
                  all such permits, licenses and authorizations, and is, to
                  the best of its knowledge, also in compliance with all
                  other limitations, restrictions, conditions, standards,
                  prohibitions, requirements, obligations, schedules and
                  timetables contained in any applicable Environmental Law
                  or in any regulation, code, plan, order, decree, judgment,
                  injunction, notice or demand letter issued, entered,
                  promulgated or approved thereunder.

            b.    No notice, notification, demand, request for information,
                  citation, summons or order has been issued, no complaint
                  has been filed, no penalty has been assessed and no
                  investigation or review is pending or threatened by any
                  governmental or other entity with respect to any alleged
                  failure by it to have any permit, license or authorization
                  required in connection with the conduct of its business or
                  with respect to any Environmental Laws, including without
                  limitation, Environmental Laws relating to the


                                       -8-

<PAGE>


                   generation, treatment, storage, recycling, transportation,
                   disposal or release of any Hazardous Materials.

            c.     There are no liens or encumbrances arising under or pursuant
                   to any Environmental Laws on any of the property or
                   properties owned by it, and no governmental actions have been
                   taken or are in process which could subject any of such
                   properties to such liens or encumbrances or, as a result of
                   which it would be required to place any notice or restriction
                   relating to the presence of Hazardous Materials at any
                   property owned by it in any deed to such property.

SECTION 4. Affirmative Covenants. Borrower covenants and agrees that, so long
as any of the Obligations shall remain outstanding, it will perform and
observe each and all of the covenants and agreements herein set forth.

4.1.        Payments Under this Agreement and the other Loan Documents. It will
            make punctual payment of all monies and will faithfully and fully
            keep and perform all of the terms, conditions, covenants and
            agreements contained on its part to be paid, kept or performed
            hereunder, and will be bound in all respects as debtor under this
            Agreement and the other Loan Documents.

4.2.        Information Access to Books, and Inspection. It will furnish to
            Lender such information regarding its business affairs and financial
            condition as Lender may reasonably request and give any
            representative of Lender access during normal business hours to, and
            permit him/her to examine and copy, and make extracts from, any and
            all books, records and documents in its possession relating to its
            affairs and to inspect any of the Property.

4.3.        Payment of Liabilities. It will pay and discharge at or before their
            maturity all taxes, assessments, rents, claims, debts and charges,
            except where the same may be contested in good faith and will
            maintain, in accordance with GAAP, appropriate reserves for the
            accrual of any of the same.

4.4.        Existence, Properties, Insurance. It will do or cause to be done
            all things necessary to preserve and keep in full force and
            effect its corporate or partnership existence, as the case may
            be, its rights and franchises, and will comply with all laws
            applicable thereto; and will at all times maintain, preserve and
            protect all franchises, patents, and trade names and will
            preserve all of the remainder of its Property used or useful in
            the conduct of its business and will keep the same in good
            condition and repair (normal wear and tear and obsolescence
            excepted), and from time to time will reasonably make, or cause
            to be made, all needful and proper repairs, renewals,
            replacements, betterments and improvements thereto, and will pay
            or cause to be paid, except when the same may be contested in
            good faith, all rent due on premises where any Property is held
            or may be held, so that the

                                       -9-

<PAGE>

             business carried on in connection therewith may be continuously
             conducted. Borrower will have and maintain insurance at all times
             with respect to all Property against risks of fire (including
             so-called extended coverage), theft and such risks as Lender may
             reasonably require containing such terms, in such form, and for
             such periods, and written by such companies as may reasonably be
             satisfactory to Lender, such insurance to be payable to Lender and
             Borrower as their interests may appear; each policy of insurance
             shall have a loss payee endorsement providing:

            a.    That, if the policy is cancelled at any time by the insurance
                  carrier, in such case the policy shall continue in force for
                  the benefit of Lender for not less than thirty (30) days after
                  written notice of cancellation to Lender from the insurance
                  carrier; and

            b.    That the policy will not be reduced or cancelled at the
                  request of the insured nor will said loss payee endorsement be
                  amended or deleted without thirty (30) days' prior written
                  notice to Lender from the insurance carrier.

             Borrower will furnish Lender with certificates or other evidence
             satisfactory to Lender of compliance with the foregoing insurance
             provisions. Borrower will also at all times maintain necessary
             workers' compensation insurance and such other insurance as may be
             required by law or as may be reasonably required in writing by
             Lender.

4.5.        Notices. It will promptly give notice in writing to Lender of:

            (a) the occurrence of any event which constitutes or which with
            notice or lapse of time, or both, would constitute an Event of
            Default under this Agreement or any of the other Loan Documents;
            (b) the occurrence of any material adverse change in its
            business, properties or its condition or operations, financial or
            otherwise, setting forth a description of such material adverse
            change; and (c) any court or governmental orders, notices,
            claims, investigations, litigation and proceedings received by it
            in which the aggregate amount involved is $250,000 or more and
            not covered by insurance, and of any material dispute which may
            exist between it and any governmental regulatory body or any
            other party.

4.6.        Financial Statements; Notice of Default. The Borrower shall
            deliver or cause to be delivered to Lender

            a.    as soon as available and in any event within forty-five (45)
                  days after the end of each of its first, second and third
                  fiscal quarters, a balance sheet of the Borrower as of the
                  close of each such fiscal quarter and statements of income and
                  retained earnings for that portion of the fiscal year-to-date
                  then ended, which shall be prepared in conformity with GAAP,
                  applied on a


                                      -10-

<PAGE>

                  basis consistent with that of the preceding period, and which
                  shall be certified by the president or Chief Financial
                  Officer of the Borrower as being accurate and fairly
                  presenting the financial condition of the Borrower.

            b.    as soon as available and in any event within ninety (90)
                  days after the close of each fiscal year of the Borrower,
                  audited financial statements including a balance sheet as
                  of the close of such fiscal year and statements of income
                  and retained earnings and source and application of funds
                  for the year then ended, all on a comparative basis with
                  corresponding statements for the preceding fiscal year and
                  prepared in conformity with generally accepted accounting
                  principles, applied on a basis consistent with that of the
                  preceding year, and accompanied by an unqualified opinion
                  of such accountants and a written statement from such
                  accountants stating that they have reviewed such financial
                  statements and the financial covenants set forth herein and
                  have found no evidence of an Event of Default having
                  occurred or of an event which with passage of time and/or
                  giving of notice would constitute an Event of Default
                  having occurred.

            c.    together with the statements referred to in sub-paragraphs (i)
                  and (ii) above, a written statement from the President or
                  Chief Financial Officer of the Borrower certifying that there
                  exists no Event of Default by Borrower in the performance of
                  any obligations to Lender under the Loan Documents.

            d.    from time to time, promptly upon Lender's written request,
                  such other information about the financial condition and
                  operations of Borrower as Lender may reasonably request.

            e.    promptly on becoming aware of any Event of Default, or any
                  event but for the giving of notice or the passage of time
                  would constitute an Event of Default, notice thereof, in
                  writing.

4.7.        Pension Plans. It shall do all acts, including, but not limited to,
            making all contributions necessary to maintain compliance with ERISA
            and the Code, and agrees not to terminate any such Plan in a manner
            or do or fail to do any act which could result in the imposition of
            a lien on any of its properties pursuant to Section 4068 of ERISA;

4.8.        Reports. Borrower shall deliver to Lender:

            a.    as soon as available and in any event within forty-five (45)
                  days after the end of each fiscal quarter of the Borrower, a
                  report, in form satisfactory to Lender, setting forth the
                  calculations of, and information as to compliance


                                      -11-

<PAGE>

                 with, the financial covenants of the Borrower contained in
                 SECTION 5.8 of this Agreement, certified by the President or
                 Chief Financial Officer of the Borrower to be complete and
                 correct;

            b.    as soon as available and in any event within a reasonable time
                  after the close of each fiscal year of Borrower, copies of the
                  portions of any and all auditors' letters, if any, to Borrower
                  regarding any material changes in the accounting practices and
                  control procedures used by Borrower;

SECTION 5. Negative Covenants. So long as any Obligations remain outstanding
and unpaid, Borrower covenants and agrees that it will not without the
express written consent of Lender:

5.1.        Limitation on Liens. Incur or permit to exist any liens, mortgages,
            security interests, pledges, charges or other encumbrances against
            any of its property or assets, whether now owned or hereafter
            acquired (including, without limitation, any lien or encumbrance
            relating to any response, removal or clean-up of any toxic
            substances or hazardous wastes) which in the aggregate exceed
            $250,000, except: (a) liens, mortgages, security interests, charges
            or other encumbrances in favor of Lender or specifically permitted
            in writing by Lender; (b) pledges or deposits in connection with or
            to secure workers' compensation or unemployment insurance; and (c)
            tax liens which are being contested in good faith with the prior
            written consent of Lender and against which, if requested by
            Lender, Borrower shall maintain reserves in amounts and in form
            (book, cash, bond or otherwise) satisfactory to Lender.

5.2.        Covenant to Secure Equally and Ratably. Permit any other
            indebtedness incurred before or after the date hereof to be secured
            by any asset of Borrower without Lender's prior written consent,
            except liens securing indebtedness to any seller incurred in
            connection with the purchase of personal property for the business
            of such Borrower which is secured only by the property so financed.

5.3.        Financial Covenants. Unless Lender otherwise consents in writing:

            a.    Current Ratio. Borrower shall not permit its Current Ratio
                  to be less than 1.00 to 1.00 at any time.

            b.    Ratio of Total Liabilities to Net Worth. Borrower shall not
                  permit the ratio of its Total Liabilities to Net Worth to
                  exceed .75 to 1.0 at any time.

            c.    Net Worth. Borrower shall not permit its Net Worth to be less
                  than $25,000,000 at any time.


                                      -12-

<PAGE>

            d.    The financial covenants contained above shall be calculated in
                  accordance with generally accepted accounting standards.

SECTION 6. Default.

6.1.        The occurrence of any of the following events will constitute an
            Event of Default under this Agreement:

            a.    The failure to pay any installment of principal and/or
                  interest due under the Loan or any fee when due and payable.

            b.    The failure to pay taxes, if any, due on any indebtedness
                  under the Loan or any tax or assessment upon any collateral
                  securing the Obligations, on or before the same shall become
                  due and payable.

            c.    The failure by Borrower to observe or perform any other
                  covenant contained in this Agreement or in any of the other
                  Loan Documents.

            d.    The occurrence of an Event of Default under any of the other
                  Loan Documents.

            e.    The filing by or against Borrower of any petition,
                  arrangement, reorganization, or the like under any
                  insolvency or bankruptcy law, or the adjudication of
                  Borrower as a bankrupt (and if such filing is involuntary,
                  the failure to have same dismissed within sixty (60) days
                  from the date of filing), or the making of an assignment
                  for the benefit of creditors, or the appointment of a
                  receiver for any part of Borrower's properties or the
                  admission in writing by Borrower of its inability to pay
                  its debts as they become due.

            f.    The breach in any material respect of any warranty or the
                  untruth or inaccuracy in any material respect of any
                  representation of Borrower contained in the Loan Documents or
                  made or deemed made in connection with the making of the Loan
                  hereunder.

            g.    The occurrence of a default beyond any applicable grace period
                  under or demand for the payment of any other note or
                  obligation of Borrower.

            h.    The failure by Borrower to make payment on any obligation for
                  borrowed money or for the deferred purchase price of property
                  or services due to any party other than Lender, beyond any
                  grace period provided with respect thereto, or upon demand, or
                  the failure to perform any other term, condition, or covenant
                  contained in any agreement under which any such


                                      -13-

<PAGE>


                    obligation is created, the effect of which default is to
                    cause such obligation to become due and payable prior to its
                    date of maturity.

              i.    The dissolution or termination of existence of Borrower.

              j.    The passage or enforcement of any federal, state, or local
                    law or the rendition of a final decision of any court (other
                    than a law or decision with respect to a tax upon the
                    general revenues of Lender) in any way directly changing or
                    affecting the Loan or lessening the net income thereon in a
                    fashion which is not corrected or reimbursed by Borrower.

              k.    The passage or enforcement of any federal, state, or local
                    law or the rendition of a final decision of any court in any
                    way impairing Lender's ability to charge and collect the
                    interest stated in the Note, including without limitation,
                    the ability to vary the interest payable under the Note in
                    accordance with its terms.

              l.    A judgment or judgments for the payment of money aggregating
                    more than $250,000 or more shall be rendered against
                    Borrower and any such judgment shall remain unsatisfied and
                    in effect for a period of thirty (30) consecutive days
                    without a stay of execution.

              m.    The occurrence of a material adverse change in any business,
                    properties or the condition or operations, financial or
                    otherwise, of Borrower.

6.2.          Acceleration. Upon the happening of any Event of Default
              specified above, at Lender's option, the entire unpaid balance
              owed under the Loan, the Note and the Loan Documents and under
              any other note or other documents evidencing the same, plus any
              other sums owed hereunder, shall, at Lender's option, become
              and shall thereafter be immediately due and payable without
              presentment, demand, protest, notice of protest, or other
              notice of dishonor of any kind, all of which are hereby
              expressly waived by Borrower. Failure to exercise such option
              shall not constitute a waiver of the right to exercise the same
              in the event of any subsequent default. Upon the occurrence of
              any Event of Default, without in any way affecting Lender's
              other rights and remedies, or after maturity or judgment, the
              interest rate applicable to the Loan shall automatically change
              without notice to a floating rate per annum equal to two
              percentage points (2%) above the otherwise then applicable rate.

6.3.          Rights of Lender. In the event of the occurrence of an Event of
              Default (a) Lender will have the right to enforce all of its
              rights under the Loan Documents and (b) Lender shall have, in
              addition to all other rights provided herein, the rights and
              remedies provided by law and (c) Lender shall make no further
              advances under the Note. Failure by Lender to exercise any right,
              remedy or option under this


                                      -14-


<PAGE>


              Agreement or any of the other Loan Documents or in any other
              agreement between Borrower and Lender, or delay by Lender in
              exercising the same will not operate as a waiver by Lender.
              Neither Lender nor any party acting as Lender's attorney pursuant
              to this Agreement shall be liable for any error of judgment or
              mistake of fact or law. Lender's rights and remedies under this
              Agreement will be cumulative and not exclusive of any other right
              or remedy which Lender may have.

SECTION 7. Miscellaneous.

7.1.          Indemnification. In consideration of Lender's execution and
              delivery of this Agreement and Lender's making of the Loan
              hereunder and in addition to all other obligations of Borrower
              under this Agreement, Borrower hereby agree to defend, protect,
              indemnify and hold harmless Lender, its successors, assigns,
              officers, directors, employees and agents (including, without
              limitation, those retained in connection with the transactions
              contemplated by this Agreement) (collectively, the "Indemnitee")
              from and against any and all actions, causes of action, suits,
              claims, losses, costs, penalties, fees, liabilities and damages
              and expenses in connection therewith (irrespective of whether
              any such Indemnitee is a party to any action for which
              indemnification hereunder is sought), and including reasonable
              attorneys' fees and disbursements (the "Indemnifiable
              Liabilities") incurred by the Indemnitee or any of them as a
              result of; or arising out of, or relating to (i) the execution,
              delivery, performance or enforcement of this Agreement and the
              other Loan Documents and any instrument, document or agreement
              executed pursuant hereto to any of the Indemnitee; (ii) Lender's
              status as lender to, or creditor of, Borrower; (iii) the
              operation of Borrower's business from and after the date
              hereof; or (iv) the enforcement of Lender's rights under the
              Loan Documents and/or the collection of the Obligations,
              provided that Borrower shall not be required to indemnify
              Indemnitee for any Indemnifiable Liabilities resulting from the
              gross negligence or willful misconduct of Lender or any of the
              other Indemnities in the collection of the Loan and in the
              liquidation of the collateral thereafter. To the extent that
              the foregoing undertaking by Borrower may be unenforceable for
              any reason, Borrower shall make the maximum contribution to the
              payment and satisfaction of each of the Indemnifiable
              Liabilities which is permissible under applicable law.

7.2.          Setoff. In addition to and not in limitation of the above,
              with respect to any deposits or Property of Borrower in
              Lender's possession or control, now or in the future,
              Lender shall have the right, following the occurrence of an
              Event of Default, to setoff all or any portion thereof; at
              any time, against any Obligations hereunder, even though
              unmatured, without prior notice or demand to Borrower.


                                      -15-


<PAGE>


7.3.          WAIVER OF RIGHT TO PREJUDGMENT REMEDY NOTICE AND HEARING. BORROWER
              ACKNOWLEDGES THAT LENDER MAY HAVE RIGHTS AGAINST IT, NOW OR IN
              THE FUTURE, IN ITS CAPACITY AS CREDITOR OR IN ANY OTHER CAPACITY.
              SUCH RIGHTS MAY INCLUDE THE RIGHT TO DEPRIVE BORROWER OF OR AFFECT
              THE USE OF OR POSSESSION OR ENJOYMENT OF BORROWER'S PROPERTY; AND
              IN THE EVENT LENDER DEEMS IT NECESSARY TO EXERCISE ANY OF SUCH
              RIGHTS PRIOR TO THE RENDITION OF A FINAL JUDGMENT AGAINST
              BORROWER, OR OTHERWISE, BORROWER MAY BE ENTITLED TO NOTICE AND/OR
              HEARING UNDER THE CONSTITUTION OF THE UNITED STATES AND/OR STATE
              OF CONNECTICUT, CONNECTICUT STATUTES (TO DETERMINE WHETHER OR NOT
              LENDER HAS PROBABLE CAUSE TO SUSTAIN THE VALIDITY OF LENDER'S
              CLAIM), OR THE RIGHT TO NOTICE AND/OR HEARING UNDER OTHER
              APPLICABLE STATE OR FEDERAL LAWS PERTAINING TO PREJUDGMENT
              REMEDIES, PRIOR TO THE EXERCISE BY LENDER OF ANY SUCH RIGHTS. TO
              THE MAXIMUM EXTENT PERMITTED BY LAW, BORROWER EXPRESSLY WAIVES ANY
              SUCH RIGHT TO PREJUDGMENT REMEDY NOTICE OR HEARING TO WHICH
              BORROWER MAY BE ENTITLED. THIS SHALL BE A CONTINUING WAIVER AND
              REMAIN IN FULL FORCE AND EFFECT SO LONG AS BORROWER ARE OBLIGATED
              TO LENDER.

7.4.          Waiver of Trial by Jury. Borrower hereby waives trial by jury in
              any court and in any suit, action, or proceeding on any matter
              arising in connection with, or in any way related to, this
              Agreement or the other Loan Documents and/or the enforcement of
              the Lender's rights and remedies hereunder or thereunder,
              including, without limitation, tort claims.

7.5.          Additional Waivers. Borrower unconditionally waives to the fullest
              extent permitted by law (a) any requirement of diligence, (b))all
              defenses which may now or hereafter exist by virtue of any statute
              of limitations, stay, valuation, moratorium or similar law, except
              the sole defense of payment, (c) any and all claims and
              counterclaims for consequential and/or special damages, and (d)
              all demands upon Borrower and all other formalities the omission
              of any of which, or delay in the performance of which, might, but
              for the provisions of this section, by rule of law or otherwise,
              constitute grounds for relieving or discharging the Borrower in
              whole or in part from any of the Obligations, it being the
              intention of the Borrower that its Obligations shall not be
              discharged, except by performance and then only to the extent of
              such performance.

7.6.          Waivers Made Knowingly. Borrower acknowledges that it makes all
              waivers contained in this Agreement and the other Loan Documents
              knowingly, voluntarily, without duress and only after
              consideration of the ramifications of


                                      -16-


<PAGE>


              these waivers with its attorneys. Borrower further acknowledge
              that Lender has not agreed with or represented to it that the
              provisions of these waivers will not be fully enforced in all
              instances.

7.7.          Consent to Jurisdiction. Borrower agree to submit to jurisdiction
              in the State of Connecticut in any action or proceeding arising
              out of this Agreement or any of the other Loan Documents, and in
              furtherance of such agreement, Borrower hereby agrees and consents
              that without limiting other methods of obtaining jurisdiction,
              jurisdiction over the Borrower in any action or proceeding may be
              obtained within or without the jurisdiction of any court located
              in the State of Connecticut and that any process or notice of
              motion or other application to any such court in connection with
              any such action or proceeding may be served upon the Borrower by
              registered or certified mail to the last known address of the
              Borrower, whether such address is within or without the
              jurisdiction of any such court.

7.8.          No Waiver. No course of dealing between Borrower and Lender and no
              failure to exercise or delay in exercising on the part of Lender
              any right, power or privilege under the terms of this Agreement or
              the other Loan Documents shall operate as a waiver thereof; nor
              shall any single or partial exercise of any right, power or
              privilege hereunder or thereunder preclude any other or further
              privilege. The rights and remedies provided herein or in any other
              agreement are cumulative and not exclusive or in derogation of any
              rights or remedies provided in and thereof, by law or otherwise.

7.9.          Cross-Default. Borrower acknowledge and agree that a default under
              any one of the Loan Documents shall constitute a default under
              each of the other Loan Documents.

7.10.         Survival of Agreements. All agreements, representations and
              warranties made herein, in any agreement and in any statements,
              notices, invoices, certificates, schedules, documents or other
              instruments delivered to Lender in connection with this Agreement
              or any other agreement shall survive the making of the Loan and
              advances hereunder.

7.11.         Further Documents. Borrower agrees that, at any time or from time
              to time upon written request of Lender, it will execute and
              deliver such further documents and do such other acts and things
              as Lender may reasonably request in order to fully effect the
              purposes of this Agreement and the other Loan Documents.

7.12.         Entire Agreement. This Agreement and the documents referred to
              herein constitute the entire agreement of the parties and may not
              be amended orally and shall be construed and interpreted in
              accordance with the laws of the State of Connecticut, including
              its conflict of laws principles.


                                      -17-


<PAGE>


7.13.         Successors. All rights of Lender hereunder shall inure to the
              benefit of its successors and assigns, and all Obligations of
              Borrower shall bind its successors and assigns.

7.14.         Payments. The acceptance of any check, draft or money order
              tendered in full or partial payment of any Obligation hereunder is
              conditioned upon and subject to the receipt of final payment in
              cash.

7.15.         Schedules. All schedules referred to herein and annexed hereto are
              hereby incorporated into this Agreement and made a part hereof.

7.16.         Acknowledgment of Copy, Use of Proceeds. Borrower acknowledges
              receipt of copies of the Note and attests, represents and warrants
              to Lender that advances made under the Loan are to be used for
              general commercial purposes and that no part of such proceeds will
              be used, in whole or in part, directly or indirectly, for the
              purpose of purchasing or carrying any "margin security" or "margin
              stock" as such terms are defined in Regulation U of the Board of
              Governors of the Federal Reserve System.

7.17.         Descriptive Headings. The descriptive headings of the several
              sections of this Agreement are inserted for convenience only and
              shall not be deemed to affect the meaning or construction of any
              of the provisions hereof.

7.18.         Notices. Any written notice required or permitted by this
              Agreement may be delivered by depositing it in the U.S. mail,
              postage prepaid, or by telegraph, charges prepaid, or facsimile
              addressed to Borrower or Lender at the addresses set forth at the
              beginning of this Agreement. If any notice is sent to Lender
              pursuant to this paragraph, it should be sent to the attention of:
              Robert Shettle.

7.19.         Severability. If any provision of this Agreement or application
              thereof to any person or circumstance shall to any extent be
              invalid, the remainder of this Agreement or the application of
              such provision to persons, entities or circumstances other than
              those as to which it is held invalid, shall not be affected
              thereby and each provision of this Agreement shall be valid and
              enforceable to the fullest extent permitted by law.

7.20          Commitment Fee. Borrower agrees to pay to Lender a commitment fee
              payable on a quarterly basis equal to .25% of the amount of the
              Loan.


                                      -18-

<PAGE>

In Witness Whereof, the parties have caused this Agreement to be duly executed
and delivered by the proper and duly authorized officers as of the date and year
first above written.


WITNESS:

- ---------------------------            FLEET NATIONAL BANK

/s/ IRENE FRANKLIN                     By: /s/ MATT HUMMELL
- ---------------------------                -----------------------------
                                       Title: Vice President



/s/ MICHAEL E. BIELEWICZ               ZYGO CORPORATION
- ---------------------------

                                       By: /s/ MARK J. BONNEY
                                           -----------------------------
                                           Title: Vice President
- ---------------------------


STATE OF CONNECTICUT )
                     )ss.:
COUNTY OF HARTFORD   )

The foregoing instrument was acknowledged before me this 4th day of June, 1997,
by Irene Franklin, a employee of FLEET NATIONAL BANK, a national banking
association, on behalf of the Lender.

                                       /s/  IRENE FRANKLIN
                                       ----------------------------------
                                       Commissioner of the Superior Court
                                       Notary Public
                                       My Commission Expires: January 31, 2000


STATE OF CONNECTICUT )
                     )ss.:
COUNTY OF HARTFORD   )

The foregoing instrument was acknowledged before me this 3rd day of June,
1997, by Mark B. Bonney, Vice President of ZYGO
CORPORATION, a Delaware corporation, on behalf of the corporation.

                                       /s/  JOYCE A. GOLDBERG
                                       ----------------------------------------
                                       Commissioner of the Superior Court
                                       Notary Public
                                       My Commission Expires: December 31, 2001


                                      -19-

<PAGE>

                                PROMISSORY NOTE
                                ---------------

$3,000,000.00                                             Hartford, Connecticut
                                                          June 4, 1997

FOR VALUE RECEIVED, the undersigned, ZYGO CORPORATION, a Delaware corporation
located at Laurel Brook Road, Box 448, Middlefield, Connecticut 06455-0448 (the
"Borrower"), hereby promises to pay to the order of FLEET NATIONAL BANK, a
national banking association, (the "Lender"), at its office at 777 Main Street
Hartford, Connecticut 06115 or at such other place as the holder hereof may
designate, ON DEMAND the principal amount advanced hereunder and remaining
unpaid, up to a maximum amount of THREE MILLION AND NO/100 DOLLARS
($3,000,000.00) (the "Principal Amount") in lawful money of the United States,
together with interest on the Principal Amount, beginning on the date hereof,
before and after maturity or judgment, at a per annum rate determined as
provided below.

     1. Interest Rate: Each advance under this Note (each a "Loan Advance")
shall bear interest at a per annum rate equal to either (a) a floating rate
equal to Lender's Prime Rate (as hereinafter defined) or (b) a fixed rate equal
to sixty (60) basis points above the LIBOR Rate (as determined for each Interest
Period applicable thereto) for available Interest Periods of thirty (30), sixty
(60) or ninety (90) days. The Borrower shall elect either option (a) or (b) as
provided below.

     2. Requests for Advances: Whenever Borrower desires an advance, Borrower
shall notify Lender (which notice shall be irrevocable) by telephone, facsimile
or in writing, of the desired borrowing. Such notice (the "Notice of Borrowing")
shall specify the date of the proposed borrowing, the amount requested, whether
the advance shall be a Prime Rate Loan or a LIBOR Rate Loan, and, if a LIBOR
Rate Loan, the duration of the initial available Interest Period. Each Notice of
Borrowing for advances which are Prime Rate Loans must be received by Lender no
later than 11:00 a.m., Hartford, Connecticut time on the day such borrowing is
requested, and each Notice of Borrowing for advances which are LIBOR Rate Loans
must be received by Lender no later than 10:00 a.m., Hartford, Connecticut time
at least three (3) Business Days' prior to the day such borrowing is requested.
Any Notice of Borrowing that is not in writing shall be followed by a written
confirmation by the Borrower, provided that if such written confirmation differs
in any respect from the action taken by Lender, the records of Lender shall
control, absent manifest error. Lender shall enter each Loan Advance as a debit
on a loan account maintained by Borrower with Lender (the "Loan Account").
Lender may also record in the Loan Account, in accordance with customary banking
procedures, all fees, accrued and unpaid interest, late fees, usual and
customary bank charges for the maintenance and administration of accounts
maintained by Borrower and other fees and charges which are properly chargeable
to Borrower in connection with the Loan Advances and all payments, subject to
collection, made by Borrower on account of or to Lender. Borrower may repay and
reborrow advances that are made under this Note, subject, however, to the
prepayment terms contained below. Borrower shall not have more than three (3)
LIBOR Rate Loans outstanding at any


<PAGE>

one time. Borrower's right to request advances under this Note shall terminate
on the Termination Date. Advances that are LIBOR Rate Loans shall be in the
minimum amount of $l00,000 each.

     3. Election and Continuation of Interest Periods. Any Prime Rate Loan shall
continue as a Prime Rate Loan until the Borrower elects to convert it to a LIBOR
Rate Loan as provided below. Any LIBOR Rate Loan may be continued as such upon
the expiration of the then current Interest Period by the Borrower giving
irrevocable written notice to Lender of the duration of the next available
Interest Period to be applicable to any such LIBOR Rate Loan not less than three
(3) Business Days prior to the last Business Day of the then current Interest
Period with respect to such LIBOR Rate Loan, provided that no LIBOR Rate Loan
may be continued as such: (i) at a time when any Event of Default (or event or
condition which would constitute an Event of Default but for the giving of
notice or passage of time or both) has occurred and is continuing and (ii) after
the date that is thirty (30) days prior to the Termination Date. Unless Borrower
elects to convert to a different interest rate as provided below, if a LIBOR
Rate Loan is not continued as a LIBOR Rate Loan, all as provided above, then any
such loan shall automatically be converted to a Prime Rate Loan on the last day
of the then expiring Interest Period.

     4. Conversion of Loans to a Different Interest Rate. The Borrower may elect
from time to time to convert (a) a LIBOR Rate Loan to a Prime Rate Loan or (b) a
Prime Rate Loan to a LIBOR Rate Loan as provided in this section. Borrower shall
exercise such election by giving the Lender not less than three (3) Business
Days prior irrevocable written notice of such election; provided that any such
conversion of a LIBOR Rate Loan to a Prime Rate Loan shall only be made on the
last Business Day of the then current Interest Period with respect thereto. Any
such notice of conversion to a LIBOR Rate Loan shall specify the length of the
available Interest Period applicable thereto.

     5. Payments of Interest. Interest on this Note shall be calculated on the
basis of a 360 day year and the actual number of days elapsed. Monthly payments
of interest shall be due and payable in arrears on the first day of each month
immediately following each and every month in which a Prime Rate Loan is
outstanding and on the last day of each Interest Period for each and every LIBOR
Rate Loan until this Note is paid in full.

     6. Payments of Principal. If not sooner paid, the aggregate outstanding
Principal Amount of this Note, together with all accrued and unpaid interest
thereon and any other fees or charges then due, shall be due and payable on
demand of the Lender but if not so demanded, all such amounts shall be due and
payable on the Termination Date.

     7. Definitions. As used in this Note and not defined elsewhere in this
Note, the following terms shall have the following meanings:

          a. "Business Day" means any day other than a day on which commercial
     banks in Hartford, Connecticut are required or permitted by law to close.


                                       -2-


<PAGE>

          b. "Interest Period" means with respect to advances bearing interest
     at the LIBOR Rate, an available period of thirty (30), sixty (60) or ninety
     (90) days, provided that:

               (1) if any Interest Period would otherwise end on a day that is
          not a Business Day, such Interest Period shall end on the immediately
          preceding Business Day;

               (2) any Interest Period that begins on the last Business Day of a
          calendar month (or on a day for which there is no numerically
          corresponding day in the calendar month at the end of such Interest
          Period) shall end on the last Business Day of a calendar month; and

               (3) any Interest Period that would otherwise extend beyond the
          Termination Date shall end on the Termination Date.

          c. "LIBOR Rate" means, with respect to any LIBOR Rate Loan for each
     applicable Interest Period, the rate per annum determined by the Lender to
     be equal to the quotient of (a) the London Interbank Offered Rate for such
     LIBOR Rate Loan for such Interest Period, divided by (b) one (1) minus the
     Reserve Percentage for such Interest Period, expressed as follows:

          LIBOR Rate = London Interbank Offered Rate
                       -----------------------------
                         1 - Reserve Percentage

          d. "LIBOR Rate Loan" means an advance that bears interest at a rate
     equal to the LIBOR Rate plus sixty (60) basis points.

          e. "London Interbank Offered Rate" means, with respect to any
     applicable Interest Period for a LIBOR Rate Loan, the rate per annum at
     which the Eurodollar office of the Lender is offered, in the London
     interbank Dollar deposits market, at or about 11:00 a.m. London time, two
     (2) business days prior to the first day of such Interest Period, Dollar
     deposits, for a period, and in an amount, comparable to such Interest
     Period and principal amount of the LIBOR Rate Loan which shall be made by
     the Lender and outstanding during such Interest Period.

          f. "Prime Rate" means the rate of interest announced from time to time
     by Lender at its office in Hartford, Connecticut as its prime rate. Such
     Prime Rate may not be the lowest or best rate that is made available by
     Lender to its commercial borrowers.

          g. "Prime Rate Loan" means an advance that bears interest at a rate
     equal to Lender's Prime Rate. The interest rate on each Prime Rate Loan
     shall change, without notice to Borrower, each time that Lender's Prime
     Rate changes so that the rate of interest on a Prime Rate Loan is at all
     times equal to Lender's Prime Rate.

          h. "Reserve Percentage" means the maximum marginal percentage as
     prescribed by the Board of Governors of the Federal Reserve System (or any
     successor) for determining the reserve requirement for Lender in respect of
     eurodollar deposits having a maturity equal to the

                                      -3-


<PAGE>

Interest Period as the Borrower may elect pursuant to the terms of this Note.
With respect to the LIBOR Rate, any change in the interest rate because of a
change in the Reserve Percentage shall become effective, without notice or
demand, on the date on which such change in the Reserve Percentage becomes
effective.

          i. "Termination Date" means November 26, 1997.

     8. Illegality. Notwithstanding any other provisions hereof, if any
applicable law or governmental regulation, guideline, order or directive, or any
change therein or in the interpretation or application thereof by any
governmental authority charged with the interpretation or the administration
thereof (whether or not having the force of law) shall make it unlawful for the
Lender to make or maintain LIBOR Rate Loans as contemplated by this Note: (i)
the obligation of the Lender to continue LIBOR Rate Loans shall forthwith be
cancelled, and (ii) such amounts then outstanding shall be automatically
converted, without notice, to Prime Rate Loans on the last day of the then
current Interest Period or within such earlier time as required by law. If any
such conversion of LIBOR Rate Loans is made on a day that is not the last
Business Day of the then current Interest Period applicable thereto, Borrower
shall pay the Lender such amount or amounts required pursuant to Section 13
below.

     9. Basis for Determining LIBOR Inadequate or Unfair. In the event that the
Lender shall have determined (which determination, absent manifest error, shall
be conclusive and binding upon Borrower) that (i) by reason of circumstances
affecting the Interbank LIBOR market, adequate and reasonable means do not exist
for determining the LIBOR Rate, or (ii) Dollar deposits in the relevant amount
and for the relevant maturity are no longer available to the Lender in the
Interbank LIBOR market, or (iii) the continuation of LIBOR Rate Loans has been
made impractical or unlawful by the occurrence of a contingency that materially
and adversely affects the Interbank LIBOR market, or (iv) the LIBOR Rate will
not adequately and fairly reflect the cost to the Lender of maintaining LIBOR
Rate Loans, or (v) the LIBOR Rate shall no longer represent the effective cost
to the Lender of U.S. Dollar deposits in the relevant market for deposits in
which it regularly participates, the Lender shall give the Borrower notice of
such determination as soon as practicable. If such notice is given all LIBOR
Rate Loans shall be automatically converted, without notice, to Prime Rate Loans
effective on the last Business Day of the then current Interest Period
applicable thereto. Until such notice has been withdrawn, the LIBOR Rate shall
not be continued.

     10. Costs and Expenses. The Borrower shall pay all taxes levied or assessed
on this Note or the debt evidenced hereby against the Lender, together with all
costs, expenses and attorneys' and other professional fees incurred in any
action to collect and/or enforce this Note or to enforce the Loan Agreement
between Borrower and Lender dated the same date as this Note (the "Loan
Agreement") or any other agreement relating to this Note or the Loan Agreement
or any other agreement or in any litigation or controversy arising from or
connected with the Loan Agreement or any other agreement, or this Note.

                                       -4-

<PAGE>

     11. Increased Costs. In the event that applicable law, treaty or regulation
or directive from any government, governmental agency or regulatory authority,
or any change therein or in the interpretation or application thereof, or
compliance by the Lender with any request or directive (whether or not having
the force of law) from any central bank or government, governmental agency or
regulatory authority, shall:

          a. subject the Lender to any tax of any kind whatsoever (except taxes
     on the overall net income of the Lender) with respect to the Loan
     Agreement, this Note or any of the loans made by it, or change the basis of
     taxation of payments to the Lender in respect thereof (except for changes
     in the rate of tax on the overall net income of the Lender);

          b. impose, modify or hold applicable any reserve, special deposit,
     compulsory loan or similar requirements against assets held by, deposits or
     other liabilities in or for the account of, advances, loans or other
     extensions of credit by, or any other acquisition of funds by, any office
     of the Lender, including (without limitation) pursuant to Regulations of
     the Board of Governors of the Federal Reserve System; or

          c. in the opinion of the Lender, cause this Note, any loan made under
     this Note or under the Loan Agreement to be included in any calculations
     used in the computation of regulatory capital standards; or

          d. impose on the Bank any other condition;

and the result of any of the foregoing is to increase the cost to the Lender, by
an amount that the Lender deems to be material, of making, converting into,
continuing and/or maintaining the loans made pursuant to this Note (the "Loans")
or to reduce the amount of any payment (whether of principal, interest or
otherwise) in respect of any of such Loans, then, in any case, the Borrower
shall promptly pay the Lender, upon its demand, such additional amounts
necessary to compensate the Lender for such additional costs or such reduction
in payment, as the case may be (collectively the "Additional Costs"). The Lender
shall certify the amount of such Additional Costs to the Borrower, and such
certification, absent manifest error, shall be deemed conclusive.

     12. Capital Adequacy Protection. If, after the date hereof, the Lender
shall have determined that the adoption of any applicable law, governmental
rule, regulation or order regarding capital adequacy of banks or bank holding
companies, or any change therein, or any change in the interpretation or
administration thereof by any governmental authority, central bank or comparable
agency charged with the interpretation or administration thereof, or compliance
by the Lender with any request or directive regarding capital adequacy (whether
or not having the force of law and whether or not failure to comply therewith
would be unlawful, so long as the Lender believes in good faith that such has
the force of law or that the failure to so comply would be unlawful) of any such
authority, central bank or comparable agency, has or would have the effect of
reducing the rate of return on any of the Lender's capital as a consequence of
the Lender's obligations hereunder to a level below that which the Lender could
have achieved but for such adoption, change or compliance

                                       -5-


<PAGE>

(taking into consideration the Lender's policies with respect to capital
adequacy immediately before such adoption, change or compliance and assuming
that the Lender's capital was fully utilized prior to such adoption, change or
compliance) by an amount deemed by the Lender in its judgment to be material,
then, promptly upon demand, the Borrower shall immediately pay to the Lender,
from time to time as specified by the Lender, such additional amounts as shall
be sufficient to compensate the Lender for such reduced return, together with
interest on each such amount from the date of such specification by the Lender
until payment in full thereof at the highest rate of interest (other than the
default rate of interest) due on the Loans. A certificate of the Lender setting
forth the amount to be paid to the Lender shall, in the absence of manifest
error, be deemed conclusive. In determining such amount, the Lender shall use
any reasonable averaging and attribution methods. The Borrower may, however,
avoid paying such amounts for future rate of return reductions if, within the
maximum borrowings permitted herein, the Borrower borrows such amounts as will
cause the Lender to avoid any such future rate of return reductions which would
otherwise be caused by such changed capital adequacy requirements or the
Borrower agrees to a reduction in the Loans to achieve the same result.

     13. Indemnity. The Borrower agrees to indemnify the Lender and to hold the
Lender harmless from any loss (including any of the additional costs referred to
above and any lost profits) or expense that it may sustain or incur as a
consequence of (i) a default by the Borrower in the payment of the principal of
or interest due on this Note, or (ii) the making of a prepayment of the
Principal Amount bearing interest at the LIBOR Rate on a day which is not the
last day of the then current Interest Period applicable thereto, including, but
not limited to, in each case any such loss or expense arising from the
reemployment of funds obtained by it or from fees, interest or other amounts
payable to terminate the deposits from which such funds were obtained. The
Lender shall prepare a certificate as to any additional amounts payable to it
pursuant to this Section 13, which certificate shall be submitted by the Lender
to the Borrower and shall, absent manifest error, be deemed conclusive.

     14. Lawful Interest. Notwithstanding any provisions of this Note, it is the
understanding and agreement of the Borrower and Lender that the maximum rate of
interest to be paid by the Borrower to the Lender shall not exceed the highest
or the maximum rate of interest permissible to be charged by a commercial lender
such as the Lender to a commercial borrower such as the Borrower under the laws
of the State of Connecticut. Any amount paid in excess of such rate shall be
considered to have been payments in reduction of principal.

     15. Late Charge. Without limiting the Lender's rights and remedies with
respect to the Event of Default that will have occurred, the Borrower hereby
agrees to pay a "late charge" equal to five percent (5%) of any installment of
interest or other amount due to the Lender which is not paid within fifteen (15)
days of the due date and is not due to the Lender's failure to debit Borrower's
account on a timely basis. Thereof to defray the extra expense involved in
handling such delinquent payment.

                                       -6-


<PAGE>

     16. Prepayments.

          a. The Borrower may, at its option and upon two (2) Business Days'
     prior written notice (which notice shall be irrevocable), prepay the
     Principal Amount of a LIBOR Rate Loan or a Prime Rate Loan on the following
     conditions: (a) the Borrower shall pay all accrued interest on the
     Principal Amount being paid to the date of the prepayment and, in the case
     of prepayments in full, all fees, charges, costs, expenses and other
     amounts then due hereunder; and (b) such Principal Amount of a LIBOR Rate
     Loan shall only be prepaid on the last Business Day of the then current
     Interest Period with respect thereto. In its notice, the Borrower shall
     specify the date and amount of the prepayment. In the event that any
     prepayment of the Principal Amount of a LIBOR Rate Loan is required or
     permitted on a date other than the last Business Day of the then current
     Interest Period with respect thereto, the Borrower shall indemnify the
     Lender therefore as provided in this Note.

          b. In the event that Borrower makes a prepayment and does not
     specify in its notice of prepayment whether the prepayment is to be applied
     to a LIBOR Rate Loan or a Prime Rate Loan, then Lender shall apply such
     prepayment in such order as Lender in its sole discretion shall determine.

     17. Events of Default. The Borrower agrees that the occurrence of an Event
of Default under the Loan Agreement shall constitute an Event of Default under
this Note. Reference is hereby made to the Loan Agreement for the other terms
and conditions relating to the loan evidenced by this Note which are
incorporated in this Note by reference. Upon demand of the amounts due hereunder
by the Lender or upon the occurrence of any Event of Default, the availability
of advances hereunder shall, at the option of the Lender, be automatically
terminated and the Lender, at its option, may declare all advances outstanding
hereunder, together with accrued interest thereon and all applicable late
charges, other amounts due under this Note and all other liabilities and
obligations of the Borrower to the Lender to be immediately due and payable,
whereupon the same shall become immediately due and payable; all of the
foregoing without demand, presentment, protest or notice or any kind, all of
which are hereby expressly waived by the Borrower. Failure to exercise such
option shall not constitute a waiver of the right to exercise the same in the
event of any subsequent default. Upon the occurrence of any Event of Default,
without in any way affecting the Lender's other rights and remedies, or after
maturity or judgment, the interest rate applicable to the outstanding principal
balance of this Note shall automatically change without notice to a floating per
annum rate equal to two percentage points (2.0%) above the otherwise applicable
rate.

     18. Lien and Right of Setoff. The Borrower hereby gives the Lender a right
of setoff for all liabilities arising hereunder upon and against all the
deposits, credits and property of Borrower now or hereafter in the possession,
custody, safekeeping or control of the Lender or in transit to it. Lender may,
upon the occurrence of an Event of Default, without notice and without first
resorting to any collateral which may now or hereafter secure this Note, apply
or set off the same, or any part thereof, to any liability of the Borrower, even
though unmatured.

                                       -7-


<PAGE>



     19. No Waiver. Failure by the Lender to insist upon the strict performance
by Borrower of any terms and provisions herein shall not be deemed to be a
waiver of any terms and provisions herein, and the Lender shall retain the right
thereafter to insist upon strict performance by the Borrower of any and all
terms and provisions of this Note or any agreement securing the repayment of
this Note.

     20. Governing Law. This Note shall be governed by the laws of the State of
Connecticut.

     21. Prejudgment Remedy and Other Waivers. THE BORROWER ACKNOWLEDGES THAT
THE LOAN EVIDENCED BY THIS NOTE IS A COMMERCIAL TRANSACTION AND WAIVES ITS RIGHT
TO NOTICE AND HEARING UNDER CHAPTER 903a OF THE CONNECTICUT GENERAL STATUTES, OR
AS OTHERWISE ALLOWED BY ANY STATE OR FEDERAL LAW WITH RESPECT TO ANY PREJUDGMENT
REMEDY WHICH LENDER MAY DESIRE TO USE, AND FURTHER, WAVES DILIGENCE, DEMAND,
PRESENTMENT FOR PAYMENT, NOTICE OF NONPAYMENT, PROTEST AND NOTICE OF PROTEST,
AND NOTICE OF ANY RENEWALS OR EXTENSIONS OF THIS NOTE, AND ALL RIGHTS UNDER ANY
STATUTE OF LIMITATION. THE BORROWER ACKNOWLEDGES THAT IT MAKES THIS WAIVER
KNOWINGLY, VOLUNTARILY, WITHOUT DURESS AND ONLY AFTER CONSIDERATION OF THE
RAMIFICATIONS OF THIS WAIVER WITH ITS ATTORNEYS.

     22. Jury Waiver. THE BORROWER HEREBY WAIVES TRIAL BY JURY IN ANY COURT AND
IN ANY SUIT, ACTION OR PROCEEDING ON ANY MATTER ARISING IN CONNECTION WITH OR IN
ANY WAY RELATED TO THE FINANCING TRANSACTIONS OF WHICH THIS NOTE IS A PART
AND/OR THE ENFORCEMENT OF ANY OF THE LENDER'S RIGHTS AND REMEDIES, INCLUDING
WITHOUT LIMITATION, TORT CLAIMS. THE BORROWER ACKNOWLEDGES THAT IT MAKES THIS
WAIVER KNOWINGLY, VOLUNTARILY, WITHOUT DURESS AND ONLY AFTER CONSIDERATION OF
THE RAMIFICATIONS OF THIS WAIVER WITH ITS ATTORNEYS.

     IN WITNESS WHEREOF, the Borrower has caused this Note to be duly executed
this 4th day of June, 1997.

                                                     ZYGO CORPORATION

                                                     By /s/ MARK J. BONNEY
                                                        -----------------------
                                                     Title: Vice President

                                       -8-





                                                              EXECUTION COPY





                              ACQUISITION AGREEMENT

                                  by and among

                                ZYGO CORPORATION,

                             SIGHT SYSTEMS, INC. and

                     THE SHAREHOLDERS OF SIGHT SYSTEMS, INC.

                                   dated as of

                                 August 19, 1997



<PAGE>


                                TABLE OF CONTENTS

                                                                           Page
                                                                           ----
RECITALS ...................................................................  1

ARTICLE I.   DEFINITIONS....................................................  1

ARTICLE II.  ACQUISITION ...................................................  3

    Section 2.01.   Acquisition ............................................  3
    Section 2.02.   Status of Zygo Shares...................................  3
    Section 2.03.   Deliveries; Escrow......................................  3
    Section 2.04.   Closing.................................................  4

ARTICLE III. REPRESENTATIONS AND WARRANTIES CONCERNING THE COMPANY..........  4

    Section 3.01.   Organization, Etc.......................................  4
    Section 3.02.   Other Company Interests.................................  4
    Section 3.03.   Capitalization..........................................  4
    Section 3.04.   Authorization...........................................  5
    Section 3.05.   No Violation............................................  5
    Section 3.06.   Approvals...............................................  5
    Section 3.07.   Financial Statements and Other Information..............  6
    Section 3.08.   No Undisclosed Liabilities..............................  7
    Section 3.09.   Corporate Action........................................  7
    Section 3.10.   Certain Events..........................................  7
    Section 3.11.   Taxes...................................................  8
    Section 3.12.   Litigation..............................................  9
    Section 3.13.   Compliance with Laws....................................  9
    Section 3.14.   Title to and Condition of Property......................  9
    Section 3.15.   Environmental Matters................................... 10
    Section 3.16.   Contracts............................................... 10
    Section 3.17.   Employee and Labor Matters and Plans.................... 11
    Section 3.18.   Insurance Policies...................................... 11
    Section 3.19.   Brokerage Fees.......................................... 12
    Section 3.20.   No Product Liabilities; Product Warranties.............. 12
    Section 3.21.   Suppliers and Customers................................. 12
    Section 3.22.   Intellectual Properties................................. 13
    Section 3.23.   Licenses................................................ 14
    Section 3.24.   Restrictive Documents and Territorial Restrictions...... 14
    Section 3.25.   Bank Accounts........................................... 14
    Section 3.26.   Accounting Matters...................................... 14
    Section 3.27.   No Misleading Statements................................ 14


                                       -i-


<PAGE>


                                                                           Page
                                                                           ----
ARTICLE IV. REPRESENTATIONS AND WARRANTIES OF THE SHAREHOLDERS.............. 15

    Section 4.01.   Authorization; Ownership of Company Shares.............. 15
    Section 4.02.   No Violation............................................ 15
    Section 4.03.   Approvals............................................... 16
    Section 4.04.   Securities Act Matters.................................. 16

ARTICLE V. REPRESENTATIONS AND WARRANTIES OF ACQUIROR....................... 17

    Section 5.01.   Organization, Etc....................................... 17
    Section 5.02.   Capitalization.......................................... 17
    Section 5.03.   Authorization........................................... 17
    Section 5.04.   No Violation............................................ 18
    Section 5.05.   Approvals............................................... 18
    Section 5.06.   Commission Filings...................................... 18
    Section 5.07.   Financial Statement and Other Information............... 19
    Section 5.08.   Compliance with Laws.................................... 19
    Section 5.09.   Brokerage Fees.......................................... 19

ARTICLE VI. COVENANTS AND AGREEMENTS........................................ 20

    Section 6.01.   Confidentiality......................................... 20
    Section 6.02.   Public Announcements.................................... 20
    Section 6.03.   Certain Tax Matters..................................... 20
                    (a)  Sales and Transfer Taxes........................... 20
                    (b)  Tax Returns and Payment of Taxes for Periods 
                         through the Closing Date........................... 20
                    (c)  Indemnification for Taxes.......................... 21
                    (d)  Tax Audits......................................... 22
                    (e)  Mutual Cooperation................................. 22

    Section 6.04.   Issuance of Options to Acquire Zygo Common Stock........ 23
    Section 6.05.   Benefits Arrangements................................... 23
    Section 6.06.   Pooling Affiliates' Letters............................. 23
    Section 6.07.   Further Assurances...................................... 23
    Section 6.08.   Opinions of the Company's Counsel....................... 24

ARTICLE VII. CONDITIONS OF CLOSING.......................................... 24

    Section 7.01.   Conditions to  All Parties' Obligations................. 24
                    (a)  Illegality or Legal Constraint..................... 24
                    (b)  Governmental Authorizations........................ 24
                    (c)  Escrow Agreement................................... 24
                    (d)  Registration Agreement............................. 24
                    (e)  Employment and Non-Compete Agreements.............. 24



                                      -ii-


<PAGE>


                                                                           Page
                                                                           ----
    Section 7.02.   Conditions to the Obligations of Acquiror to 
                    Effect the Acquisition.................................. 24

                    (a)  Representations and Warranties Accurate............ 24
                    (b)  Performance by the Company and the Shareholders.... 25
                    (c)  Consents........................................... 25
                    (d)  Opinion of Counsel................................. 25
                    (e)  Proceedings; Receipt of Documents.................. 25
                    (f)  Due Diligence...................................... 25
                    (g)  No Material Adverse Effect......................... 25
                    (h)  Pooling Affiliate Letters.......................... 25
                    (i)  Pooling of Interests............................... 25
                    (j)  Fairness Opinion................................... 25
                    (k)  Supporting Documents............................... 26

    Section 7.03.   Conditions to the Obligations of the Company and 
                    the Shareholders to Effect the Acquisition.............. 26

                    (a)  Representations and Warranties Accurate............ 26
                    (b)  Performance by Acquiror............................ 26
                    (c)  Proceedings........................................ 26
                    (d)  Opinion of Counsel................................. 26

ARTICLE VIII. INDEMNIFICATION............................................... 26

    Section 8.01.   Indemnification by the Shareholders..................... 26
                    (a)  Joint Indemnification.............................. 26
                    (b)  Several Indemnification............................ 27
    Section 8.02.   Indemnification by Acquiror............................. 27
    Section 8.03.   Limitations............................................. 27
    Section 8.04.   Notice and Defense of Claims............................ 28
    Section 8.05.   Non-Exclusive Remedy.................................... 28
    Section 8.06.   Survival of Representations and Warranties.............. 28
    Section 8.07.   Reimbursement........................................... 29
    Section 8.08.   Other Indemnification Provision......................... 30

ARTICLE IX. GENERAL PROVISIONS.............................................. 30

    Section 9.01.   Effect of Due Diligence................................. 30
    Section 9.02.   Expenses................................................ 30
    Section 9.03.   Successors and Assigns.................................. 30
    Section 9.04.   Entire Agreement........................................ 30
    Section 9.05.   Notices................................................. 31
    Section 9.06.   Applicable Law.......................................... 31
    Section 9.07.   No Third Party Beneficiaries............................ 31
    Section 9.08.   Amendments and Waivers.................................. 31
    Section 9.09.   Severability............................................ 31
    Section 9.10.   Construction............................................ 31
    Section 9.11.   Counterparts............................................ 32
    Section 9.12.   Headings................................................ 32


                                      -iii-



<PAGE>


                                    EXHIBITS

Exhibit 6.06          Form of Pooling Affiliates' Letter
Exhibit 7.01(c)       Escrow Agreement
Exhibit 7.01(d)       Registration Agreement
Exhibit 7.01(e)(1)    Form of Employment and Non-Compete Agreement -- Grant
Exhibit 7.01(e)(2)    Form of Employment and Non-Compete Agreement -- Mahoney
Exhibit 7.01(e)(3)    Form of Employment and Non-Compete Agreement -- Chan
Exhibit 7.02(d)       Legal Opinion of Gee & Sunada
Exhibit 7.03(d)       Legal Opinion of Fulbright & Jaworski L.L.P.


                                    SCHEDULES

Schedule 1            Shareholders and Company Stock Information
Schedule 2            Company's Disclosure Schedule


                                      -iv-



<PAGE>



                              ACQUISITION AGREEMENT

     ACQUISITION AGREEMENT, dated as of August 19, 1997 (this "AGREEMENT"), by
and among Sight Systems, Inc., a California corporation (the "COMPANY"), Zygo
Corporation, a Delaware corporation ("ACQUIROR" or "ZYGO"), and the individuals
listed on Schedule 1 hereto, constituting all the holders of capital stock of
the Company (each, a "SHAREHOLDER" and collectively, the "SHAREHOLDERS").

                                    RECITALS

     WHEREAS, Acquiror desires to acquire, and the Shareholders and the Company
desire that the Shareholders transfer, all of the issued and outstanding shares
(the "COMPANY SHARES") of common stock, no par value per share, of the Company
("COMPANY STOCK"), owned by the Shareholders, in a transaction which is intended
to qualify as a tax-free reorganization within the meaning of Section
368(a)(1)(B) of the Internal Revenue Code of 1986, as amended (the "Code"), all
upon the terms and subject to the conditions set forth in this Agreement.

     NOW, THEREFORE, in consideration of the premises, the representations,
warranties and agreements herein contained and for other good and valuable
consideration, the receipt and sufficiency of which are hereby acknowledged, and
subject to the terms and conditions set forth herein, the parties hereto agree
as follows:

                                   ARTICLE I.

                                   DEFINITIONS

     In this Agreement the following words and phrases shall have the meanings
hereinafter set forth:

     "Acquisition" shall mean the acquisition of the Company Shares pursuant to
the terms of this Agreement.

     "Affiliate" or "affiliate" shall mean, with respect to any Person, any
other Person that, directly or indirectly, controls or is controlled by or is
under common control with such Person. As used in this definition of
"Affiliate", the term "control" and any derivatives thereof mean the possession,
directly or indirectly, of the power to direct or cause the direction of the
management and policies of a Person, whether through ownership of voting
securities, by contract, or otherwise.

     "Agreement" shall mean this Acquisition Agreement.

     "Business" shall mean the business conducted and contemplated to be
conducted by the Company.

     "Escrow Agreement" shall mean that certain escrow agreement, dated as of
the Closing Date, by and among Acquiror, the Shareholders, the Company and
Continental Stock Transfer & Trust Company, as escrow agent, in the form of
Exhibit 7.01(c) hereto.




<PAGE>




     "Governmental Entity" shall mean any court, administrative agency or
commission or other federal, state or local government or governmental authority
or instrumentality.

     "Hazardous Materials" shall mean any (a) toxic or hazardous materials or
substances; (b) solid wastes, including asbestos, buried contaminants,
chemicals, flammable or explosive materials; (c) radioactive materials; (d)
petroleum wastes and spills or releases of petroleum products; and (e) any other
chemical, pollutant, contaminant, substance or waste that is regulated by any
Governmental Entity under any Environmental Law (as hereinafter defined).

     "Knowledge" shall mean, with respect to the Company, the actual present
knowledge of any of the Shareholders or any officer of the Company, and with
respect to Acquiror, the actual present knowledge of any executive officer of
Acquiror.

     "Liens" shall mean all liens, charges, security interests, pledges, rights
or claims of others, restraints on transfer or other encumbrances.

     "Material Adverse Effect" shall mean, with respect to any Person, a
material adverse effect on the business, prospects, results of operations,
financial condition or assets of such Person and its subsidiaries, if any, taken
as a whole.

     "Person" shall mean an individual, corporation, partnership, joint venture,
trust or unincorporated organization, or a government or any agency or political
subdivision thereof.

     "Registration Agreement" shall mean that certain registration agreement,
dated as of the Closing Date, by and among Acquiror and each of the
Shareholders.

     "Regulatory Authority" shall mean any foreign, federal, state or local
government or governmental authority the approval of which, or filing with, is
legally required or permitted for consummation of the transactions contemplated
by this Agreement.

     "Securities Act" shall mean the Securities Act of 1933, as amended.

     "Unregistered Shares" shall mean shares of stock issued in a transaction
which has not been registered under the Securities Act.

     "Zygo Subsidiary" shall mean any corporation of which securities or other
ownership interests having ordinary voting power to elect a majority of the
board of directors or other persons performing similar functions are directly or
indirectly owned by Acquiror.

                                       -2-



<PAGE>



                                   ARTICLE II.

                              ACQUISITION AND SALE

     Section 2.01. Acquisition and Sale. At the Closing (as hereinafter
defined), upon the terms and subject to the conditions contained herein, each of
the Shareholders shall sell, transfer and deliver to Acquiror the number of
Company Shares indicated opposite his name on Schedule 1 hereto, and Acquiror
shall purchase and acquire from each such Shareholder, all right, title and
interest of such Shareholder in and to all of the Company Shares to be sold by
such Shareholder (as indicated on Schedule 1 hereto), free and clear of all
Liens, in consideration of the issuance by Acquiror to each of the Shareholders
of the number of Unregistered Shares (collectively, the "ZYGO SHARES") of Common
Stock, $.10 par value per share, of Acquiror ("ZYGO COMMON STOCK") indicated
opposite his name on Schedule 1 hereto.

     Section 2.02. Status of Zygo Shares. The Zygo Shares being issued to the
Shareholders at the Closing shall consist in their entirety, at the time of
their issuance, of Unregistered Shares of Zygo Common Stock, pursuant to the
exemption from registration contained in Section 4(2) of the Securities Act. As
promptly as practicable subsequent to the Closing, Acquiror will file with the
Securities and Exchange Commission (the "COMMISSION") a registration statement
covering the public resale of the Zygo Shares by the Shareholders and will use
its reasonable good faith efforts to have such registration statement declared
effective by the Commission as promptly as practicable thereafter, all in
accordance with the terms of the Registration Agreement.

     Section 2.03. Deliveries; Escrow.

          (a) At the Closing, each Shareholder shall deliver to Acquiror
     certificate(s) representing the number of Company Shares indicated opposite
     his name on Schedule 1 hereto, in each case accompanied by stock power(s)
     duly executed in blank, with signatures appropriately notarized, and with
     all necessary stock transfer and other documentary stamps attached.

          (b) At the Closing, Acquiror shall (i) deposit with the Escrow Agent
     stock certificates representing 15,000 Zygo Shares (the "ESCROWED ZYGO
     SHARES") pursuant to the terms of the Escrow Agreement (which Escrowed Zygo
     Shares shall be deposited with the Escrow Agent on behalf of the
     Shareholders in the respective amounts indicated under the column heading
     "Escrowed Zygo Shares" on Schedule 1 hereto) and (ii) deliver to each of
     the Shareholders stock certificates representing the number of Zygo Shares
     indicated opposite such Shareholder's name on Schedule 1 hereto under the
     column heading "Net Zygo Shares Being Issued to the Shareholder at
     Closing." The Escrowed Shares shall serve as security for the
     indemnification obligations of the Shareholders as provided in Section
     6.03(c) and Article VIII hereof.

     Section 2.04. Closing. The closing (the "CLOSING") of the Acquisition shall
take place at the offices of Acquiror, Middlefield, Connecticut, as soon as
practicable following the time all conditions to the respective obligations of
the parties have been satisfied or waived. Each party hereto agrees to use its
reasonable efforts to satisfy

                                       -3-



<PAGE>



promptly the conditions to the obligations of the respective parties hereto in
order to expedite the Closing. The date of the Closing is the "CLOSING DATE."

                                  ARTICLE III.

              REPRESENTATIONS AND WARRANTIES CONCERNING THE COMPANY

     Except as set forth (by reference to the applicable Section of this
Agreement) in the disclosure schedule delivered by the Company to Acquiror on
the date hereof (the "DISCLOSURE SCHEDULE"), a copy of which is attached hereto
as Schedule 2, the Company and each Shareholder hereby jointly and severally
represent and warrant to Acquiror as follows:

     Section 3.01. Organization, Etc. The Company is a corporation duly
organized, validly existing and in good standing under the laws of the State of
California and has full corporate power and authority to conduct its business as
it is now being conducted and to own, operate or lease the properties and assets
it currently owns, operates or holds under lease. The Company is duly qualified
or licensed to do business and is in good standing as a foreign corporation in
each jurisdiction where the character of its business or the nature of its
properties makes such qualification or licensing necessary, except where the
failure to so qualify or be licensed would not have a Material Adverse Effect on
the Company. All of the jurisdictions in which the Company is qualified or
licensed to do business are set forth on the Disclosure Schedule. The Company
has heretofore delivered to Acquiror true and correct copies of the Articles of
Incorporation and By-laws of the Company as in effect on the date hereof.

     Section 3.02. Other Company Interests. The Company has no legal or
beneficial equity interest, directly or indirectly, in any corporation,
partnership, joint venture or other entity.

     Section 3.03. Capitalization. The authorized, issued and outstanding
capital stock of the Company is as set forth on the Disclosure Schedule. All of
the issued and outstanding shares of capital stock of the Company are owned of
record by the Shareholders, in the respective amounts indicated on Schedule 1
hereto. The Company does not hold any shares in its own capital. The
designations, powers, preferences, rights, qualifications, limitations and
restrictions in respect of each class and series of authorized capital stock of
the Company are as set forth in the Company's Articles of Incorporation, and all
such designations, powers, preferences, rights, qualifications, limitations and
restrictions are valid, binding and enforceable and in accordance with all
applicable corporate laws. All outstanding shares of capital stock of the
Company have been duly authorized and validly issued and are fully paid and
non-assessable. All of the outstanding securities of the Company were issued in
compliance with all applicable federal and state securities and corporate laws.
None of the outstanding securities has been issued in violation of any
preemptive rights, rights of first refusal or similar rights. There are no
outstanding options, warrants, convertible securities, calls, rights,
commitments, preemptive rights or agreements or instruments or understandings of
any character to which the Company or any Shareholder is a party or by which the
Company or any Shareholder is bound, obligating the Company or any

                                       -4-



<PAGE>



Shareholder to issue, deliver or sell, or cause to be issued, delivered or sold,
contingently or otherwise, additional shares of capital stock of the Company or
any securities or obligations convertible into or exchangeable for such shares
or to grant, extend or enter into any such option, warrant, convertible
security, call, right, commitment, preemptive right or agreement. There are no
outstanding obligations, contingent or other, of the Company or any Shareholder
to purchase, redeem or otherwise acquire any shares of capital stock of the
Company. Neither the Company nor any Shareholder is a party to any voting trust
agreement or other contract, agreement, arrangement, commitment, plan or
understanding restricting or otherwise relating to voting, dividend or other
rights with respect to any of the capital stock of the Company.

     Section 3.04. Authorization. The Company has all requisite corporate power
and authority to enter into this Agreement and each of the other agreements
contemplated hereby, to carry out its obligations under this Agreement and each
of the other agreements contemplated hereby and to consummate the transactions
contemplated hereby and thereby. The execution and delivery of this Agreement
and each of the other agreements contemplated hereby, the consummation of the
transactions contemplated hereby and thereby and the performance by the Company
of its obligations hereunder and thereunder have been duly authorized by all
necessary corporate action on the part of the Company and its shareholders. Each
of this Agreement and the other agreements contemplated hereby has been duly
executed and delivered by the Company and constitutes the legal, valid and
binding obligation of the Company enforceable against the Company in accordance
with its terms (except as the enforceability thereof may be limited by any
applicable bankruptcy, insolvency or other laws affecting creditors' rights
generally or by general principles of equity, regardless of whether
enforceability is considered in equity or at law).

     Section 3.05. No Violation. The execution and delivery of this Agreement
and each of the other agreements contemplated hereby by the Company does not,
and the consummation by the Company of the transactions contemplated hereby and
thereby, and compliance with the terms hereof and thereof will not, (a) conflict
with, or result in any violation of or default or loss of any benefit under, any
provision of the Company's Articles of Incorporation or By-laws; (b) conflict
with, or result in any violation of or default or loss of any benefit under, any
License, grant, statute, law, rule or regulation, or any judgment, decree or
order of any Governmental Entity to which the Company is a party or to which any
of its property is subject; (c) conflict with, or result in a breach or
violation of, or accelerate the performance required by, the terms of any
agreement, contract, indenture or other instrument to which the Company is a
party or to which any of its property is subject, or constitute a default or
loss of any right thereunder or an event which, with the lapse of time or notice
or both, might result in a default or loss of any right thereunder or the
creation of any Lien upon any of the assets or properties of the Company; or (d)
result in any suspension, revocation, impairment, forfeiture or nonrenewal of
any License.

     Section 3.06. Approvals. The execution and delivery of this Agreement and
each of the other agreements contemplated hereby and the consummation of the
transactions contemplated hereby and thereby by the Company will not require the
consent,

                                       -5-


<PAGE>


approval, order or authorization of any Governmental Entity or Regulatory
Authority or any other Person under any statute, law, rule, regulation, permit,
license, agreement, indenture or other instrument to which the Company is a
party or to which any of its property is subject, and no declaration, filing or
registration with any Governmental Entity or Regulatory Authority is required or
advisable by the Company in connection with the execution and delivery of this
Agreement and each of the other agreements contemplated hereby, the consummation
by the Company of the transactions contemplated hereby and thereby, or the
performance by the Company of its obligations hereunder and thereunder.

     Section 3.07. Financial Statements and Other Information.

          (a) The Company has delivered to Acquiror true, correct and complete
     copies of the Company's unaudited balance sheet (the "BALANCE SHEET") as at
     June 30, 1997 (the "BALANCE SHEET DATE"), and unaudited balance sheets as
     at September 30, 1996, December 31, 1996 and March 31, 1997, and the
     related statement of income for each of the three month periods ended
     September 30, 1996, December 31, 1996, March 31, 1997 and June 30, 1997
     (all of such balance sheets and statements of income being referred to
     collectively as the "FINANCIAL STATEMENTS").

          (b) The Financial Statements are in accordance with the books and
     records of the Company and have been prepared in accordance with generally
     accepted accounting principles consistently applied throughout the periods
     covered thereby, and the balance sheets included therein present fairly as
     of their respective dates the financial condition of the Company. All
     liabilities and obligations, whether absolute, accrued, contingent or
     otherwise, whether direct or indirect, and whether due or to become due,
     which existed at the date of such Financial Statements have been disclosed
     in the balance sheets included in the Financial Statements (or in notes, if
     any, to the Financial Statements) to the extent such liabilities were
     required, under generally accepted accounting principles, to be so
     disclosed. The liabilities on the Balance Sheet consist solely of accrued
     obligations and liabilities incurred by the Company in the ordinary course
     of its business to Persons which are not Affiliates of the Company. The
     statements of income included in the Financial Statements provided
     hereunder present fairly the results of operations of the Company for the
     periods indicated, and the notes, if any, included in the Financial
     Statements present fairly the information purported to be shown thereby.

          (c) Since the Balance Sheet Date there has been no change in the
     assets or liabilities, or in the business or condition, financial or
     otherwise, or in the results of operations of the Company, which has had or
     is reasonably likely to have a Material Adverse Effect on the Company.

          (d) All properties, investments, tangible assets and deferred costs
     reflected in the Balance Sheet, collectively, have a fair market or
     realizable value at least equal to the value thereof as reflected therein.

          (e) The accounts receivable of the Company included in the Balance
     Sheet are collectible in full over the period of usual trade terms (by use
     of the

                                       -6-



<PAGE>



     Company's normal collection methods without resort to litigation or
     reference to a collection agency), and there do not exist any defenses,
     counterclaims and set-offs which would materially adversely affect such
     receivables, and all such receivables are actual and bona fide receivables
     representing obligations for the total dollar amount thereof shown on the
     books of the Company. The Company has fully performed all obligations with
     respect thereto which it was obligated to perform to the date hereof. The
     Company has delivered to Acquiror a true and complete aging schedule of the
     Company's accounts receivable as of July 31, 1997.

          (f) The Company has records that accurately and validly reflect its
     transactions and accounting controls that are reasonably designed to insure
     that such transactions are (i) in all material respects executed in
     accordance with its management's general or specific authorization and (ii)
     recorded in conformity with generally accepted accounting principles.

     Section 3.08. No Undisclosed Liabilities. There are no liabilities of the
Company of any kind whatsoever, whether or not accrued and whether or not
contingent or absolute, determined or determinable or otherwise, and whether
direct or indirect, and no existing condition, situation or set of circumstances
that could reasonably result in such a liability, other than (a) liabilities
disclosed in the Balance Sheet, (b) liabilities which have arisen in the
ordinary course of business and consistent with past practice (none of which is
a liability for breach of contract, breach of warranty, tort, infringement claim
or lawsuit) which, individually or in the aggregate, have not had or would not
reasonably be expected to have a Material Adverse Effect on the Company and (c)
liabilities incurred subsequent to the Balance Sheet Date for accounting,
brokerage and legal fees in connection with the negotiation and preparation of
this Agreement and the consummation of the transactions contemplated hereby.

     Section 3.09. Corporate Action. All corporate action of the Board of
Directors and of the shareholders of the Company taken on or prior to the date
hereof has been duly authorized, adopted or ratified in accordance with
applicable law and the Articles of Incorporation and By-laws of the Company and
has been duly recorded in its corporate minute books (true, correct and complete
copies of which have been delivered to or made available for inspection by
Acquiror).

     Section 3.10. Certain Events. Since the Balance Sheet Date, the Company has
not (a) sold, assigned or transferred any of its tangible assets except in the
ordinary course of business, or canceled any debt or claim, (b) sold, assigned,
transferred or granted any license with respect to any patent, trademark, trade
name, service mark, copyright, trade secret or other intangible asset, (c)
suffered any loss of property or waived any right of substantial value whether
or not in the ordinary course of business, (d)(I) granted any severance or
termination pay to any of its directors, officers, employees or consultants,
(II) increased any benefits payable under any existing severance or termination
pay policies or employment agreements, or (III) increased the compensation,
bonus or other benefits payable to any of its directors, officers, consultants
or employees, (e) made any material change in the manner of its business or
operations, (f) entered into any transaction except in the ordinary course of
business

                                       -7-



<PAGE>



or as otherwise contemplated hereby or (g) entered into any commitment
(contingent or otherwise) to do any of the foregoing.

     Section 3.11. Taxes. (a) Except as set forth on the Disclosure Schedule,
(i) all tax returns (including, without limitation, income, profit, franchise,
sales and use, excise, severance, occupation, property, gross receipts, payroll
and withholding tax returns and information returns), deposits and reports (all
such returns, deposits and reports herein referred to collectively as "TAX
RETURNS" or singularly as a "TAX RETURN"), including without limitation the Tax
Returns for the years ended December 31, 1994, 1995 and 1996, of or relating to
any federal, state, local or foreign or other governmental tax (all, together
with any penalties, additions to tax, fines and interest thereon or related
thereto, herein referred to collectively as "TAXES" or singularly as a "TAX")
that are required to be filed or deposited for, by, on behalf of or with respect
to the Company have been filed or deposited duly and on a timely basis and all
Taxes and filing fees shown to be due and payable on such Tax Returns have been
paid in full and all installments, assessments and charges of which the Company
is aware or has received notice and which are due and payable by the Company
have been paid in full; (ii) true, correct and complete copies of all such Tax
Returns relating to Taxes due from or with respect to the Company, its income,
assets or operations, have been delivered to Acquiror, and all such Tax Returns
and the information and data contained therein have been properly and accurately
compiled and completed, fairly present the information purported to be shown
therein and reflect all liabilities for Taxes for the periods covered by such
Tax Returns; (iii) all Taxes imposed on the Company (or for which the Company is
or could be liable, whether to any Governmental Entity or to other Persons (as,
for example, under tax allocation agreements)), for all periods up to the
Closing Date which are due and payable on or before the Closing Date, have been
paid; (iv) none of such Tax Returns are now under audit or examination by any
federal, state, local or foreign or other Governmental Entity and there are no
agreements, waivers or other arrangements providing for an extension of time
with respect to the assessment or collection of any Tax or deficiency of any
nature against the Company or with respect to any such Tax Return; (v) the
Company has withheld and remitted all amounts required to be withheld and have
paid such amounts due to the appropriate authority on a timely basis and in the
form required under the appropriate legislation; (vi) the Company has not been,
and is currently not, required to file a Tax Return in any jurisdiction other
than the United States and the State of California; (vii) neither the Company
nor any other person (including any of the Shareholders) on behalf of the
Company has (A) filed a consent pursuant to Section 341(f) of the Code or agreed
to have Section 341(f)(2) of the Code apply to any disposition of a subsection
(f) asset (as such term is defined in Section 341(f)(4) of the Code) owned by
the Company, (B) agreed to or is required to make any adjustments pursuant to
Section 481(a) of the Code or any similar provision of state, local or foreign
law by reason of a change in accounting method initiated by the Company or has
any knowledge that the Internal Revenue Service has proposed any such adjustment
or change in accounting method, or has any application pending with any taxing
authority requesting permission for any changes in accounting methods that
relate to the business or operations of the Company, (C) executed or entered
into any closing agreement pursuant to Section 7121 of the Code or any
predecessor provisions thereof or any similar provision of state, local or
foreign law with respect to the Company, or (D) requested any extension of time

                                       -8-



<PAGE>



within which to file any Tax Return, which Tax Return has since not been filed;
(viii) there is no contract, agreement plan or arrangement covering any person
that, individually or collectively, could give rise to the payment of any amount
that would not be deductible by Zygo, the Company or any of their respective
Affiliates by reason of Section 280G of the Code, or would constitute
compensation in excess of the limitation set forth in Section 162(m) of the
Code; and (ix) there are no liens as a result of any unpaid Taxes upon any of
the assets of the Company.

          (b) No Shareholder is a foreign person within the meaning of Section
     1445 of the Code. The Company has never made an election under Section 1362
     of the Code, or under any analogous or similar provision of state or local
     law, to be treated as an "S" corporation. The Company has never owned any
     Subsidiaries and has never been a member of any consolidated, combined or
     affiliated group of corporations for any Tax purposes. After the date
     hereof, no election or consent with respect to any Tax (or the computation
     thereof) affecting the Company will be made without the written consent of
     Acquiror.

     Section 3.12. Litigation. There is no action, suit, investigation,
arbitration or proceeding (whether by any Governmental Entity or other Person)
pending or, to the Knowledge of the Company, threatened or any basis in fact
therefor, against or involving the Company or any of its officers, directors,
employees, shareholders or consultants (in all instances, in their capacity as
such), assets, business or products, whether at law or in equity.

     Section 3.13. Compliance with Laws. The Company has complied with all
applicable laws (including rules, regulation, codes, plans, injunctions,
judgments, orders, decrees, rulings and charges thereunder) of any Governmental
Entity relating to or affecting the operation, conduct or ownership of its
properties or business, except where the failure to so comply has not had, and
would not have, a Material Adverse Effect on the Company. There is no existing
law, rule, regulation or order, whether federal, state, local or foreign, which
would prohibit or materially restrict the Company from, or otherwise materially
adversely affect the Company in, conducting its business in the manner in which
it is conducted as of the date hereof in any jurisdiction in which it is now
conducting business or in which it currently proposes to conduct business.

     Section 3.14. Title to and Condition of Property.

          (a) The Company does not own any real property. The Disclosure
     Schedule identifies all of the rights and interests in leasehold estates
     owned by the Company as of the date hereof, and the nature and amount of
     its interest therein. To the Knowledge of the Company, the Company has
     valid, subsisting and enforceable leases to all leasehold estates
     identified and reflected in the Disclosure Schedule and either good and
     marketable title or rights as lessee to all personalty of any kind or
     nature owned or used by the Company in connection with the Business, in
     each case free and clear of all Liens except for (i) Liens, defects or
     irregularities of title identified on the Disclosure Schedule which,
     individually or in the aggregate, do not detract from or materially
     interfere with the present or reasonably foreseeable use or value of the
     properties subject thereto or otherwise have or reasonably could have a
     Material

                                       -9-



<PAGE>



     Adverse Effect on the Company, and (ii) Liens for non-delinquent Taxes and
     non-delinquent statutory liens arising other than by reason of default by
     the Company. The assets and properties owned or leased by the Company are
     sufficient to operate and conduct the Business in a manner consistent with
     at least the same standards of quality and reliability as have been
     achieved as of the date hereof. The Company's possession of such property
     has not been disturbed and no claim has been asserted, whether oral or in
     writing, against the Company adverse to its rights in such leasehold
     interests.

          (b) All buildings, structures, appurtenances and material items of
     machinery, equipment and other material tangible assets used by the Company
     in connection with the Business are in good operating condition and repair,
     normal wear and tear excepted, are usable in the ordinary course of
     business, are adequate and suitable for the uses to which they are being
     put and conform in all material respects to all applicable laws,
     ordinances, codes, rules, regulations and authorizations relating to their
     construction, use and operation, except where such non-compliance would not
     have a Material Adverse Effect on the Company.

     Section 3.15. Environmental Matters.

          (a) The business of the Company as currently being conducted does not
     violate any applicable law or regulation relating to pollution, the
     environment, human safety and health, transportation or the production,
     storage, labeling or disposition of Hazardous Materials (collectively,
     "ENVIRONMENTAL LAWS"); (b) the Company has timely filed all reports
     required to be filed, has obtained all required approvals and permits and
     has generated and maintained all required data, documentation, and records
     under Environmental Laws; (c) the Company has not (and no other Person has)
     placed, held, located, stored, buried, dumped, disposed, spilled or
     released any Hazardous Materials on, beneath or about any of the properties
     used, owned or leased by the Company; and (d) the Company has not received
     any notice from any Governmental Entity or private or public entity
     advising it that it is responsible for or potentially responsible for
     corrective action or investigation or response costs with respect to a
     release, a threatened release or clean up of Hazardous Materials and has no
     reason to believe that such notice may be forthcoming.

     Section 3.16. Contracts.

     The Disclosure Schedule contains a complete list of all currently effective
written or oral contracts, agreements, commitments or arrangements of the
Company (i) involving $5,000 or more, individually or in the aggregate, (ii)
which may not be immediately terminated without penalty (or any augmentation or
acceleration of benefits); (iii) relating to the borrowing of money, or the
guarantee of any obligation (third party or otherwise) for the borrowing of
money; (iv) providing for any covenant not to compete by the Company or
otherwise restricting in any way the Company's engaging in any business activity
(including a description of the businesses to which the covenant not to compete
applies); (v) relating to consultancies, professional retentions, agency, sales
or distributorship arrangements pertaining to the Business or its products or
activities; (vi) involving contracts, agreements or commitments requiring the
Company to indemnify or hold harmless any Person; or (vii) which could
reasonably be

                                      -10-


<PAGE>



considered material to the Business (all contracts, agreements, arrangements or
commitments to which the Company is a party relating to the Business, whether or
not listed on the Disclosure Schedule, being hereinafter referred to as
"CONTRACTS"). True and correct copies of all the Contracts listed on the
Disclosure Schedule have been furnished to Acquiror. All Contracts are valid and
binding obligations of the Company and, to the Knowledge of the Company, of the
other respective parties thereto. The Company has duly performed its obligations
under all Contracts in all material respects to the extent such obligations have
accrued, and no breach or default thereunder by the Company or, to the Knowledge
of the Company, any other party thereto has occurred that could impair the
ability of the Company to enforce any material rights thereunder.

     Section 3.17. Employee and Labor Matters and Plans.

          (a) The Company does not maintain (i) any "employee benefit plan," as
     such term is defined in Section 3(3) of the Employee Retirement Income
     Security Act of 1974 ("ERISA"), whether or not subject to the provisions of
     ERISA; (ii) any personnel policy; or (iii) any other employment,
     consulting, collective bargaining, stock option, stock bonus, stock
     purchase, phantom stock, incentive, bonus, deferred compensation,
     retirement, severance, vacation, dependent care, employee assistance,
     material fringe benefit, medical, dental, sick leave, death benefit, golden
     parachute or other compensatory plan, contract, policy or arrangement which
     is not an employee benefit plan as defined in Section 3(3) of ERISA (each
     such plan, contract, policy and arrangement being herein referred to as an
     "EMPLOYEE PLAN").

          (b) The Disclosure Schedule sets forth a complete and accurate list
     showing the names, the rate of compensation (and the portions thereof
     attributable to salary and bonuses, respectively) and location of all
     employees of or consultants to the Company (each an "EMPLOYEE"). There are
     no covenants, agreements or restrictions, including but not limited to
     employee non-compete agreements, prohibiting, limiting or in any way
     restricting any Employee from engaging in any types of business activity in
     any location.

          (c) The Disclosure Schedule sets forth all outstanding loans and other
     advances made by the Company to any of its officers, directors, employees,
     shareholders or consultants.

     Section 3.18. Insurance Policies. The Disclosure Schedule identifies all
insurance policies covering the Company and its business, employees, agents and
assets, copies of which have been provided to Acquiror. Each such policy is in
full force and effect and is adequate in coverage and amount to insure fully
against risks to which the Company and its employees, businesses, properties and
other assets may be exposed in the operation of its business prior to the
Closing. None of such policies shall, pursuant to their terms, in any way be
affected by, or terminate or lapse by reason of, this Agreement. All premiums
with respect to such insurance policies have been paid on a timely basis, and no
notice of cancellation or termination has been received with respect to any such
policy. There are no pending claims against such insurance by or on behalf of
the Company. The Company has not been refused any insurance with respect to its

                                      -11-



<PAGE>



assets or operations, nor has its coverage been limited, by any insurance
carrier to which it has applied for any such insurance.

     Section 3.19. Brokerage Fees. Neither the Company, the Shareholders nor any
of their respective Affiliates has retained any financial advisor, broker, agent
or finder or paid or agreed to pay any financial advisor, broker, agent or
finder on account of this Agreement or any of the agreements contemplated hereby
or any transaction contemplated hereby or thereby or any transaction of like
nature that would be required to be paid by the Company or any Shareholder,
except for the retention of D.J. Callaghan & Company pursuant to the agreement
previously delivered to Acquiror.

     Section 3.20. No Product Liabilities; Product Warranties.

          (a) The Company has not incurred, and to the Knowledge of the Company
     there is no reason to believe there is any basis for alleging, any
     liability, damage, loss, cost or expense as a result of any defect or other
     deficiency (whether of design, materials, workmanship, labeling,
     instructions or otherwise) ("PRODUCT LIABILITY") with respect to any
     product sold or service rendered by the Company, whether such Product
     Liability is incurred by reason of any express or implied warranty
     (including, without limitation, any warranty of merchantability or
     fitness), any doctrine of common law (tort, contract or other), any
     statutory provision or otherwise and irrespective of whether such Product
     Liability is covered by insurance, other than chargebacks incurred in the
     ordinary course of business and consistent with past practice and none of
     which have, or would reasonably be expected to have, individually or in the
     aggregate, a Material Adverse Effect on the Company.

          (b) The Company has furnished Acquiror with the standard forms of
     purchase orders for its products and services that are in effect or
     proposed to be used by the Company, which forms contain all warranties and
     guarantees given by the Company to its customers with respect to their
     products and services, except for those warranties imposed by law. There
     are no pending or, to the Knowledge of the Company, threatened claims under
     any warranty or guaranty against the Company. No credits have been given in
     respect of any such warranty or guaranty (including without limitation any
     returns or allowances).

     Section 3.21. Suppliers and Customers.

          (a) The Disclosure Schedule lists (i) all suppliers of the Business to
     which the Company (x) made payments during the period from January 1, 1997
     through July 31, 1997, or (y) made or expects to make payments, in excess
     of five percent of the cost of sales of the Company, during the year ending
     December 31, 1997, (ii) all customers of the Business that paid the Company
     during the year ended December 31, 1996, or that has paid or the Company
     expects will pay to the Company during the year ending December 31, 1997,
     more than five percent of the sales revenues of the Company for such
     periods and (iii) all other suppliers and customers of the Business the
     loss of any of which, individually or in the aggregate with all other
     suppliers or customers affiliated with such supplier or customer, would
     reasonably be expected to have a Material Adverse Effect on the Company.

                                      -12-



<PAGE>


          (b) To the Knowledge of the Company, none of the customers or
     suppliers of the Company listed on the Disclosure Schedule in Section 3.21
     have expressed an intention to cease purchasing from, selling to or dealing
     with the Company nor has any information been brought to its attention by
     such customer or supplier which would reasonably lead it to believe any
     such customer or supplier intends to alter in any material respect the
     amount of such purchases, sales or the extent of dealings with the Company
     (including in the event of the consummation of the Acquisition). To the
     Knowledge of the Company, all suppliers to the Business will be able to
     fulfill outstanding or currently anticipated purchase orders placed by the
     Company which, individually or in the aggregate, exceed $25,000. The
     Company has no information which might reasonably indicate, nor has any
     information been brought to its attention which might reasonably lead it to
     believe that, any customer of the Business will cancel any outstanding or
     currently anticipated purchase orders placed with the Company which,
     individually or in the aggregate, exceed $25,000.

          (c) Neither the Company nor, to the Knowledge of the Company, any of
     its officers, directors, shareholders or Affiliates, nor any relative or
     spouse (or relative of such spouse) of any such officer, director,
     shareholder or Affiliate, nor any entity controlled by one or more of the
     foregoing: (i) owns, directly or indirectly, any interest in (excepting
     less than 2% stock holdings for investment purposes in securities of
     publicly held and traded companies), or is an officer, director, employee
     or consultant of, any Person which is, or is engaged in business as, a
     competitor, lessor, lessee, supplier, distributor, sales agent, customer or
     client of the Business; (ii) owns, directly or indirectly, in whole or in
     part, any tangible or intangible property that the Business uses in the
     conduct of its business; or (iii) has any cause of action or other claim
     whatsoever against, or owes any amount to, the Company, except for claims
     in the ordinary course of business such as for accrued vacation pay,
     accrued benefits under employee benefit plans, and similar matters and
     agreements existing on the date hereof.

     Section 3.22. Intellectual Properties. The Disclosure Schedule contains an
accurate and complete list of all domestic and foreign patents, patent
applications, patent licenses, software licenses (other than generally available
pre-packaged "off-the- shelf" software) and know-how licenses, trade names,
trademarks, copyrights, service marks, trademark registrations and applications,
service mark registrations and applications, and copyright registrations and
applications owned (in whole or in part), licensed to any extent or used or
anticipated to be used by the Company in the conduct of the Business, whether in
the name of the Company, any employee or otherwise (collectively, the
"INTELLECTUAL PROPERTY"). The Company either owns all right, title and interest
in and to, or possesses the exclusive right to use, the Intellectual Property
used in the conduct of the Business and each item constituting part of the
Intellectual Property in which the Company has an ownership or license interest
has been, to the extent indicated on the Disclosure Schedule, duly registered
with, filed in or issued by, as the case may be, the United States Patent and
Trademark Office or such other Governmental Entities as are indicated on the
Disclosure Schedule and such registrations, filings and issuances remain in full
force and effect. No claim of infringement or misappropriation of any
Intellectual Property of any other Person has been made nor, to the Knowledge of
the Company, threatened against the Company and the Company is not infringing or
misappropriating any Intellectual Property of any

                                      -13-



<PAGE>


other Person. Without limiting any other provisions hereof, the Company has not
granted any license, franchise or permit to any Person to use any of the
Intellectual Property of the Company and no other Person has the right to use
the same trademarks, service marks or trade names used by the Company or any
similar trademarks, service marks or trade names likely to lead to confusion.

     Section 3.23. Licenses. The Company has all licenses, permits, consents and
other governmental certificates, authorizations and approvals required by every
federal, state, local and foreign Governmental Entity for the conduct of the
Business and the use of its properties as presently conducted or used, other
than those the failure of which to hold has not had and would not have a
Material Adverse Effect on the Company (collectively, "LICENSES"). The
Disclosure Schedule contains a true and complete list of the Licenses. All of
the Licenses are in full force and effect and no action or claim is pending nor,
to the Knowledge of the Company, is threatened to revoke or terminate any
License or declare any License invalid in any material respect. The Company has
taken all necessary action to maintain such Licenses. The Disclosure Schedule
contains a true and complete list of all federal, state, local and foreign
governmental or judicial consents, orders, decrees and other compliance
agreements relating to the Company or any of its assets or business under which
the Company is operating or bound.

     Section 3.24. Restrictive Documents and Territorial Restrictions. The
Company is not subject to, or a party to, any charter, by-law, mortgage, Lien,
lease, license, permit, agreement, contract, instrument, law, rule, ordinance,
regulation, order, judgment or decree, or any other restriction of any kind or
character, which could, to the Knowledge of the Company, (i) materially
adversely affect the business, prospects, operations or condition (financial or
otherwise) of the Business or any of its assets or property, or the continued
operation of the Business after the date hereof on substantially the same basis
as heretofore operated or (ii) restrict the ability of the Company to acquire
any property or conduct business in any area.

     Section 3.25. Bank Accounts. The Disclosure Schedule contains a true,
correct and complete list of the names and locations of all banks, trust
companies, savings and loan associations and other financial institutions at
which the Company maintains safe deposit boxes or accounts of any nature and the
names of all Persons authorized to draw thereon, make withdrawals therefrom or
have access thereto.

     Section 3.26. Accounting Matters. Neither the Company, any Shareholder nor
any of their Affiliates has taken or agreed to take any action that would
prevent Acquiror from accounting for the Acquisition as a "pooling of interests"
under generally accepted accounting principles. It is understood that KPMG Peat
Marwick LLP ("KPMG"), in part, will rely upon this representation for the
purposes of issuing the opinion required pursuant to section 7.02(i) hereof.

     Section 3.27. No Misleading Statements. This Agreement, the information and
schedules referred to herein and the certificates that have been furnished to
Acquiror in connection with the transactions contemplated hereby do not include
any untrue statement of a material fact and do not omit to state any material
fact necessary to

                                      -14-



<PAGE>



make the statements contained herein or therein, in light of the circumstances
under which they were made, not misleading. To the Knowledge of the Company,
there is no fact relating to the Company which materially adversely affects or
in the future would be reasonably likely (so far as the Company can now
reasonably foresee) to materially adversely affect the business, condition
(financial or otherwise), property or assets of the Company which is not
referred to herein or in this corresponding section of the Disclosure Schedule.

                                   ARTICLE IV.

               REPRESENTATIONS AND WARRANTIES OF THE SHAREHOLDERS

     Each Shareholder hereby severally agrees and represents and warrants to
Acquiror as follows:

     Section 4.01. Authorization; Ownership of Company Shares.

          (a) Such Shareholder has all requisite power and authority to enter
     into this Agreement and each of the other agreements contemplated hereby to
     which he is a party, and to carry out his obligations under this Agreement
     and each of the other agreements contemplated hereby to which he is a
     party, and to consummate the transactions contemplated hereby and thereby.
     Each of this Agreement and the other agreements contemplated hereby to
     which such Shareholder is a party has been duly executed and delivered by
     such Shareholder and constitutes the legal, valid and binding obligation of
     such Shareholder enforceable against such Shareholder in accordance with
     its terms (except as the enforceability thereof may be limited by any
     applicable bankruptcy, insolvency or other laws affecting creditors' rights
     generally or by general principles of equity, regardless of whether such
     enforceability is considered in equity or at law).

          (b) Such Shareholder has, and immediately prior to the transfer of the
     Company Shares being sold by such Shareholder hereunder to Acquiror will
     have, good and marketable title to the Company Shares being sold by such
     Shareholder hereunder, free and clear of any Liens. Upon the delivery of
     and payment for such Company Shares hereunder, Acquiror will acquire good
     and marketable title to, and all of such Shareholder's rights in, such
     Company Shares, free and clear of any Liens.

     Section 4.02. No Violation. The execution and delivery of this Agreement
and each of the other agreements contemplated hereby to which such Shareholder
is a party by such Shareholder does not, and the consummation by such
Shareholder of the transactions contemplated hereby and thereby, and compliance
with the terms hereof and thereof will not, conflict with, or result in a breach
or violation of or default or loss of any benefit under, or accelerate the
performance required by, the terms of any law, statute, regulation, order,
judgment or decree or any agreement, contract, indenture or other instrument to
which such Shareholder is a party or to which any of such Shareholder's
properties are subject, or constitute a default or loss of any right thereunder
or an event which, with the lapse of time or notice or both, might result in

                                      -15-


<PAGE>


a default or loss of any right thereunder or the creation of any Lien upon any
of the assets or properties of such Shareholder.

     Section 4.03. Approvals. The execution and delivery of this Agreement and
each of the other agreements contemplated hereby to which such Shareholder is a
party and the consummation of the transactions contemplated hereby and thereby
by such Shareholder will not require the consent, approval, order or
authorization of any Governmental Entity or Regulatory Authority or any other
Person under any statute, law, rule, regulation, permit, license, agreement,
indenture or other instrument to which such Shareholder is a party or to which
any of his properties are subject, and no declaration, filing or registration
with any Governmental Entity or Regulatory Authority is required by such
Shareholder in connection with the execution and delivery of this Agreement and
each of the other agreements contemplated hereby to which such Shareholder is a
party, the consummation by such Shareholder of the transactions contemplated
hereby and thereby or the performance by such Shareholder of his obligations
hereunder and thereunder.

     Section 4.04. Securities Act Matters.

          (a) Such Shareholder understands that the Zygo Shares, at the time of
     their original issuance by Zygo, will not have been registered under the
     Securities Act or any state securities laws by reason of their issuance in
     a transaction exempt from the registration requirements of the Securities
     Act and applicable state securities laws and that such Zygo Shares must be
     held indefinitely unless a subsequent disposition thereof is registered
     under the Securities Act and applicable state securities laws or is exempt
     from such registration. Zygo has undertaken to so file a registration
     statement with the Commission as promptly as practicable after the Closing
     Date and to use its reasonable good faith efforts to have the Zygo Shares
     so registered for resale as promptly as practicable thereafter, as provided
     in Section 2.02 hereof.

          (b) Such Shareholder is acquiring the Zygo Shares for such
     Shareholder's own account and not with a view to, or for sale in connection
     with, directly or indirectly, any distribution thereof that would require
     registration under the Securities Act or applicable state securities laws.

          (c) Such Shareholder and such Shareholder's, attorneys, accountants,
     investment and financial advisors, if any, have had the opportunity to
     review the books and records of Acquiror and have been provided access to
     such information as such Shareholder or such Shareholder's advisors, if
     any, have requested.

          (d) Such Shareholder understands that the Zygo Shares, until they are
     registered as contemplated by Section 2.02 hereof, will bear the following
     legend (or a substantially similar legend):

               "THE SHARES REPRESENTED BY THIS CERTIFICATE WERE ISSUED IN A
               TRANSACTION TO WHICH RULE 145 PROMULGATED UNDER THE SECURITIES
               ACT OF 1933, AS AMENDED, APPLIES. THESE SECURITIES HAVE NOT BEEN
               REGISTERED UNDER THE

                                      -16-




<PAGE>



               SECURITIES ACT OF 1933, AS AMENDED, OR QUALIFIED UNDER ANY STATE
               SECURITIES LAWS. THE SECURITIES MAY NOT BE OFFERED, SOLD,
               TRANSFERRED OR OTHERWISE DISPOSED OF WITHOUT SUCH REGISTRATION OR
               THE DELIVERY TO THE COMPANY OF AN OPINION OF COUNSEL, REASONABLY
               SATISFACTORY TO THE COMPANY, THAT SUCH DISPOSITION WILL NOT
               REQUIRE REGISTRATION OF SUCH SECURITIES UNDER THE SECURITIES ACT
               OF 1933, AS AMENDED."

                                   ARTICLE V.

                   REPRESENTATIONS AND WARRANTIES OF ACQUIROR

     Acquiror hereby agrees and represents and warrants to the Shareholders as
follows:

     Section 5.01. Organization, Etc. Acquiror is a corporation duly organized,
validly existing and in good standing under the laws of the State of Delaware
and has full corporate power and authority to conduct its business as it is now
being conducted and to own, operate or lease the properties and assets it
currently owns, operates or holds under lease. Acquiror is duly qualified or
licensed to do business and is in good standing as a foreign corporation in each
jurisdiction where the character of its business or the nature of its properties
makes such qualification or licensing necessary, except where the failure to so
qualify or be licensed would not have a Material Adverse Effect on Acquiror.
Acquiror has heretofore made available to the Company true and correct copies of
its Certificate of Incorporation and By-laws as in effect on the date hereof.

     Section 5.02. Capitalization. The authorized capital stock of Acquiror
consists of 15,000,000 shares of Zygo Common Stock, of which 10,558,340 shares
are issued and outstanding as of June 30, 1997 and 207,600 are held in treasury.
The Zygo Shares, when issued pursuant to this Agreement, will be duly
authorized, validly issued, fully paid and nonassessable and will not have been
issued in violation of any preemptive rights or of any federal or state law.

     Section 5.03. Authorization. Acquiror has all requisite corporate power and
authority to enter into this Agreement and each of the other agreements
contemplated hereby, to carry out its obligations under this Agreement and each
of the other agreements contemplated hereby and to consummate the transactions
contemplated hereby and thereby. The execution and delivery by Acquiror of this
Agreement and each of the other agreements contemplated hereby, the consummation
of the transactions contemplated hereby and thereby and the performance by
Acquiror of its obligations hereunder and thereunder have been duly authorized
by all necessary corporate action on the part of Acquiror. Each of this
Agreement and the other agreements contemplated hereby has been duly executed
and delivered by Acquiror and constitutes the legal, valid and binding
obligation of Acquiror, enforceable against Acquiror in accordance with its
terms (except as the enforceability thereof may be

                                      -17-




<PAGE>



limited by any applicable bankruptcy, insolvency or other laws affecting
creditors' rights generally or by general principles of equity, regardless of
whether such enforceability is considered in equity or at law).

     Section 5.04. No Violation. The execution and delivery of this Agreement
and each of the other agreements contemplated hereby by Acquiror does not, and
the consummation by Acquiror of the transactions contemplated hereby and
thereby, and compliance with the terms hereof and thereof will not, (a) conflict
with, or result in any violation of or default or loss of any benefit under, any
provision of the Certificate of Incorporation or By-laws of Acquiror; (b)
conflict with, or result in any violation of any statute, law, rule or
regulation, or any judgment, decree or order of any Governmental Entity to which
Acquiror is a party or to which any of its properties is subject; (c) conflict
with, or result in a breach or violation of, or accelerate the performance
required by, the terms of any material agreement, contract, indenture or other
instrument to which Acquiror is a party or to which any of its properties is
subject, or constitute a default or loss of any right thereunder or an event
which, with the lapse of time or notice or both, might result in a material
default or loss of any material right thereunder or the creation of any Lien
upon any of the assets or properties of Acquiror; or (d) result in any
suspension, revocation, impairment, forfeiture or nonrenewal of any License of
Acquiror.

     Section 5.05. Approvals. The execution and delivery by Acquiror of this
Agreement and each of the agreements contemplated hereby, and the consummation
of the transactions contemplated hereby and thereby will not require the
consent, approval, order or authorization of any Governmental Entity or
Regulatory Authority or any other Person under any statute, law, rule,
regulation, permit, license, agreement, indenture or other instrument to which
Acquiror is a party or to which any of its properties are subject, and no
declaration, filing or registration with any Governmental Entity or Regulatory
Authority is required or advisable by Acquiror in connection with the execution
and delivery of this Agreement and each of the other agreements contemplated
hereby, the consummation by Acquiror of the transactions contemplated hereby and
thereby or the performance by Acquiror of its obligations hereunder and
thereunder, other than compliance with any applicable requirements under the
Securities Exchange Act of 1934, as amended (the "EXCHANGE ACT"), the Securities
Act and state securities and "blue sky" laws.

     Section 5.06. Commission Filings. Acquiror has delivered to the Company
true, correct and complete copies of Acquiror's Annual Report on Form 10-K for
the fiscal year ended June 30, 1996 (the "ZYGO 10-K"), Acquiror's Quarterly
Reports on Form 10-Q for the quarters ended September 30, 1996, December 31,
1996 and March 31, 1997 (the "ZYGO 10-QS"), Acquiror's Current Reports on Form
8-K dated August 30, 1996 and September 27, 1996, Acquiror's Current Reports on
Form 8-K/A dated November 4, 1996 and November 14, 1996, and Acquiror's Proxy
Statement dated October 8, 1996 (collectively, the "ZYGO EXCHANGE ACT FILINGS"),
which are the only reports, schedules and definitive proxy statements filed by
Acquiror with the Commission on or after June 30, 1996. Acquiror has timely
filed in the preceding twelve (12) months all the material required to be filed
by it pursuant to the applicable provisions of the Securities Act and pursuant
to Sections 13, 14 and 15(d) of the

                                      -18-



<PAGE>



Exchange Act. The Zygo Exchange Act Filings (including the documents
incorporated by reference therein), as of their respective filing dates, did not
contain any untrue statement of a material fact or omit to state any material
fact necessary in order to make the statements made therein, in the light of the
circumstances under which they were made, not misleading, and the Zygo Exchange
Act Filings were timely filed and complied when filed in all material respects
with the applicable requirements of the Exchange Act.

     Section 5.07. Financial Statement and Other Information.

          (a) The audited balance sheet and any related notes and schedules
     included or incorporated by reference in the Zygo 10-K and the unaudited
     balance sheet and any related notes and schedules included in the Zygo 10-Q
     for the quarter ended March 31, 1997 each presents fairly the consolidated
     financial position of Acquiror and the Zygo Subsidiaries as of its
     respective date and the other financial statements included in the Zygo
     10-K and such Zygo 10-Q present fairly the consolidated results of
     operations or other information included therein of Acquiror and the Zygo
     Subsidiaries for the respective periods or as of the respective dates
     therein set forth, subject, in the case of unaudited statements, to normal
     year end adjustments which are not material in amount or effect, in each
     case in accordance with generally accepted accounting principles
     consistently applied during the periods involved (except as otherwise
     stated therein).

          (b) Except as disclosed in the Zygo Exchange Act Filings, since March
     31, 1997, there has been no change in the assets or liabilities, or in the
     business or condition, financial or otherwise, or in the results of
     operations of Acquiror and the Zygo Subsidiaries, taken as a whole, which
     has had or is reasonably likely to have a Material Adverse Effect on
     Acquiror.

     Section 5.08. Compliance with Laws. The business of Acquiror and the Zygo
Subsidiaries has not been conducted in violation of any law or any ordinance or
regulation of any Governmental Entity, except for violations that individually
or in the aggregate would not and, insofar as may reasonably be foreseen, in the
future will not, have a Material Adverse Effect on Acquiror. Neither Acquiror
nor any Zygo Subsidiary is in default with respect to any order, writ,
injunction or decree known to or served upon Acquiror or any Zygo Subsidiary of
any Governmental Entity, which default would have a Material Adverse Effect on
Acquiror.

     Section 5.09. Brokerage Fees. Neither Acquiror, any Zygo Subsidiary nor any
of their respective Affiliates has retained any financial advisor, broker, agent
or finder or paid or agreed to pay any financial advisor, broker, agent or
finder on account of this Agreement or any transaction contemplated hereby or
any transaction of like nature that would be required to be paid by Acquiror or
any Zygo Subsidiary, except for the financial advisor referred to in Section
7.02(j) hereof.

                                      -19-

<PAGE>



                                   ARTICLE VI.

                            COVENANTS AND AGREEMENTS

     Section 6.01. Confidentiality. Each of Acquiror, the Company and the
Shareholders will hold, and shall cause their counsel, independent certified
public accountants, appraisers, investment bankers and other advisors to hold in
confidence any confidential data or information made available to it by the
other in connection with this Agreement using the same standard of care to
protect such confidential data or information as is used to protect its own
confidential information. Each party hereto recognizes and acknowledges that a
breach by it of this Section 6.01 will cause irreparable and material loss and
damage to the other parties hereto as to which they will not have adequate
remedy at law or in damages. Accordingly, each party acknowledges and agrees
that the issuance of an injunction or other equitable remedy is an appropriate
remedy for any such breach.

     Section 6.02. Public Announcements. Acquiror must agree in advance prior to
the issuance of any press release or the making of any public statement with
respect to this Agreement and the transactions contemplated hereby by any party
hereto.

     Section 6.03. Certain Tax Matters. The following provisions shall govern
the allocation of responsibility as among Acquiror, the Company and the
Shareholders for certain tax matters following the Closing Date:

          (a) Sales and Transfer Taxes. All sales and transfer Taxes (including
stock and real estate transfer Taxes), if any, incurred in connection with this
Agreement and the transactions contemplated hereby shall be borne by the
Shareholders. Shareholders shall, at their own expense, file or prepare for
filing all necessary Tax Returns and other documentation with respect to all
such sales or transfer Taxes, and, if required by applicable law or if necessary
to secure any applicable exemption, Acquiror shall join in the execution of any
such Tax Returns or other documentation.

          (b) Tax Returns and Payment of Taxes for Periods through the Closing
Date. The Shareholders and the Company shall be responsible for, and shall cause
to be prepared and timely filed, all tax returns for the Company for all Tax
periods ending on or before the Closing Date, and the Shareholders and the
Company (but only to the extent then wholly-owned by the Shareholders) shall
cause to be paid when due all Taxes in respect of such Tax periods. The cost of
the preparation of such tax returns shall be borne by the Company. All Tax
Returns described in this Section 6.02(b) shall be prepared in a manner
consistent with prior practice unless a past practice has been finally
determined to be incorrect by the applicable taxing authority or a contrary
treatment is required by applicable tax laws (or judicial or administrative
interpretations thereof). The Shareholders shall cause the Company to provide
Acquiror with copies of such completed Tax Returns at least 10 days prior to the
filing date, and Acquiror shall be provided an opportunity to review such Tax
Returns and supporting workpapers and schedules prior to the filing of such Tax
Returns. In the event that the amount of any Taxes for Tax periods ending on or
before the Closing


                                      -20-



<PAGE>


Date, or for which the Shareholders are otherwise responsible pursuant to
Section 6.03(c)(iii), exceeds the amount accrued on the Balance Sheet, the
Shareholders, jointly and severally, shall pay to Acquiror such excess within
ten (10) days after written notice thereof by Acquiror. Acquiror shall prepare
or cause to be prepared and filed all Tax Returns for the Company for all Tax
periods ending after the Closing Date.

          (c) Indemnification for Taxes.

               (i) The Shareholders shall, subject to the provisions of Section
8.03, jointly and severally indemnify, defend and hold harmless Acquiror and the
Company against (A) all Taxes attributable to the Company with respect to any
Tax period ending on or prior to the Closing Date and the cost of preparation of
all associated tax returns, (B) all Taxes attributable to the Company with
respect to the portion of any Tax period which begins before and ends after the
Closing Date for which the Shareholders are responsible, pursuant to Section
6.03(c)(iii) and (C) any Taxes arising by reason of any breach by the
Shareholders or inaccuracy of any of the representations contained in Section
3.11 hereof, less in each case any amount previously reserved or accrued for
Taxes on the Balance Sheet Date. Notwithstanding any other provision of this
Agreement, the obligation of the Shareholders to indemnify and hold harmless
Acquiror and the Company from Taxes under this Section 6.03 shall begin on the
Closing Date and end upon the expiration of the statute of limitations
(including any extensions thereof) applicable to the assessment and collection
of any Taxes for and against which Acquiror and the Company are indemnified and
held harmless by the Shareholders hereunder, to the extent that a claim for
indemnification hereunder has not theretofore been made in writing.
Notwithstanding the first sentence of this Section 6.03(c), the indemnification
obligation of the Shareholders set forth in this Section 6.03(c) shall not be
subject to the "basket" limitation contained in Section 8.03 hereof. Any
indemnification obligation owed to the Acquiror or the Company pursuant to this
Section 6.03(c) shall be satisfied first with the Escrowed Shares, if any, in
accordance with the terms of the Escrow Agreement.

               (ii) In determining the amount of any indemnification payment by
the Shareholders pursuant to this Section 6.03(c), there shall be deducted or
added, respectively, from or to the amount to be paid an amount equal to (A) the
present value of any net Tax benefit (federal, state, local or foreign)
realized, or reasonably expected to be realized, by Zygo or the Company as a
consequence of an event giving rise to any payment pursuant to this Section
6.03(c), or (B) the present value of any net Tax detriment (federal, state,
local or foreign) realized, or reasonably expected to be realized, by Zygo or
the Company as a consequence of an event giving rise to any payment pursuant to
this Section 6.03(c) or the receipt of any such payment. For purposes of this
Section 6.03(c)(ii), "present value" shall be calculated using the applicable
annual Federal mid-term rate, as that term is defined in the Code, as in effect
for the month in which the payment is to be made. For purposes of this Section
6.03(c)(ii), the amount of any "Tax benefit" and "Tax detriment" shall be
calculated using the highest effective Tax rate applicable or known to be
applicable with respect to the Tax period or periods for which the Tax benefit
or the Tax detriment, as the case may be, is reasonably expected to be realized
or incurred.

                                      -21-



<PAGE>



               (iii) For federal income tax purposes, the taxable year of the
Company shall end as of the close of the Closing Date and, with respect to all
other Taxes, the Shareholders and Acquiror will, unless prohibited by applicable
law, close the taxable period of the Company as of the close of the Closing
Date. Neither the Shareholders nor Acquiror shall take any position inconsistent
with the preceding sentence on any Tax Return. In any case where applicable law
does not permit the Company to close its taxable year on the Closing Date or in
any case in which a Tax is assessed with respect to a taxable period which
includes the Closing Date (but does not begin or end on that day), then Taxes,
if any, attributable to the taxable period of the Company beginning before and
ending after the Closing Date shall be allocated (i) to the Shareholders for the
period up to and including the Closing Date, and (ii) to Acquiror for the period
subsequent to the Closing Date.

          (d) Tax Audits. Acquiror shall notify the Shareholders in writing of
any pending or threatened audit or examination by any Tax authority (a "TAX
AUDIT") or a Tax assessment for which the Shareholders may be liable for
indemnification under this Agreement within thirty (30) days after Acquiror's
receipt of notice of such pending or threatened Tax Audit or assessment. A
majority in interest of the Shareholders shall have the right, at their own
expense, to control any Tax Audit, initiate any claim for refund, contest,
resolve and defend against any assessment, notice of deficiency, or other
adjustment or proposed adjustment relating to any and all Taxes for any Tax
period of the Company ending on or before the Closing Date, provided, however,
that the Shareholders shall in no event take any position in any such proceeding
which would subject Acquiror or the Company to any civil fraud or any civil or
criminal penalty, and provided, further, that the Shareholders shall not
consent, without the prior written approval of Acquiror, to any change in the
treatment of any item which would in any material respect affect the Tax
liability of Acquiror or the Company for a period subsequent to the Closing
Date. Acquiror shall have the right, at its expense, to control any other Tax
Audit, initiate any other claim for refund, and contest, resolve and defend
against any other assessment, notice of deficiency, or other adjustment or
proposed adjustment relating to Taxes for any Tax period ending after the
Closing Date with respect to the Company.

          (e) Mutual Cooperation. The parties shall provide each other with such
assistance as may reasonably be requested by any of them in connection with the
preparation of any Tax Return, any Tax Audit or other examination by any Tax
authority, or any judicial or administrative proceedings relating to liability
for Taxes, and each will retain and provide the other with any records or
information that may be relevant to such Tax Return, Tax Audit or examination,
proceedings or determination. Such assistance shall include making employees
available on a mutually convenient basis to provide additional information and
explanation of any material provided hereunder and shall include providing
copies of any relevant Tax Returns and supporting work schedules. The party
requesting assistance hereunder shall reimburse the other for reasonable
expenses incurred in providing such assistance. Without limiting in any way the
foregoing provisions of this Section 6.03, Acquiror hereby agrees to retain,
until the appropriate statutes of limitation (including any extensions) expire,
copies of all Tax Returns, supporting work schedules and other records or
information that may be relevant to such Tax Returns of the Company for all Tax


                                      -22-



<PAGE>



periods that include the dates from January 1, 1991 to the Closing Date,
inclusive, and that it will not destroy or otherwise dispose of such records
without first providing the Shareholders with a reasonable opportunity to review
and copy such records.

     Section 6.04. Issuance of Options to Acquire Zygo Common Stock. Zygo agrees
that it shall, in consultation with and based upon the recommendations of David
Grant, on or immediately after the Closing Date, grant options to purchase up to
an aggregate of 60,000 shares of Zygo Common Stock to executive officers and key
employees of the Company, under Zygo's existing stock option plan, at an
exercise price equal to the last reported sale price on the Nasdaq National
Market per share of Zygo Common Stock on the Closing Date (or, if later, on the
first day of any such executive officer's or key employee's employment with the
Company or Zygo).

     Section 6.05. Benefits Arrangements. It is Acquiror's present intention
that from and after the Closing, Acquiror shall, or shall cause the Company to,
provide all of the employees of the Company with salary and wages at not less
than their current levels and Acquiror shall, or shall cause the Company to,
continue in effect all employee benefit plans, programs, policies or
arrangements as are currently provided by the Company to its employees. It is
the Acquiror's further intention to provide the employees of the Company, over a
phase-in period, with benefits which are generally comparable in the aggregate
to the benefits provided to other similarly situated employees of Acquiror and
Zygo Subsidiaries.

     Section 6.06. Pooling Affiliates' Letters. The Company shall cause each
person who is an "affiliate," as that term is used in paragraphs (c) and (d) of
rule 145 under the U.S. Securities Act, of the Company to deliver to Acquiror on
or prior to the Closing Date a written agreement, substantially in the form of
Exhibit 6.06 hereto (the "POOLING AFFILIATE LETTERS"). The Company shall use its
commercially reasonable efforts to provide Acquiror with such information as
Acquiror shall reasonably request for purposes of making its own determination
of persons who may be deemed to be affiliates of the Company.

     Section 6.07. Further Assurances. The Company and the Shareholders from
time to time after the Closing, at Acquiror's request, will execute, acknowledge
and deliver to Acquiror such other instruments of conveyance and transfer and
will take such other actions and execute and deliver such other documents,
certifications and further assurances, all at Acquiror's expense, as Acquiror
may reasonably require in order to vest more effectively in Acquiror, or to put
Acquiror more fully in possession of, the Company Shares. In case at any time
after the Closing any further action is necessary or desirable to carry out the
purposes of this Agreement, each of the parties hereto agrees, subject to
applicable laws, to use all reasonable efforts promptly to take or cause to be
taken all further action and promptly to do or cause to be done all further
things (including the execution and delivery of such further instruments and
documents) as any party reasonably may request.

     Section 6.08. Opinions of the Company's Counsel. The Company shall use its
best efforts to cause to be delivered to Zygo at the Closing Date the opinions
of the Company's counsel required by Section 7.02(d) hereof.


                                      -23-



<PAGE>




                                  ARTICLE VII.

                              CONDITIONS OF CLOSING

     Section 7.01. Conditions to All Parties' Obligations. The obligations of
all the parties to this Agreement to effect the Acquisition shall be subject to
the fulfillment or satisfaction, at or prior to the Closing of the following
conditions or the mutual written waiver by the parties:

          (a) Illegality or Legal Constraint. No temporary restraining order,
preliminary or permanent injunction or other order or restraint issued by any
court of competent jurisdiction, no statute, rule, regulation, order, decree,
restraint or pronouncement by any Governmental Entity, and no other legal
restraint or prohibition which would prevent or have the effect of preventing
the consummation of the Acquisition shall have been issued or adopted or be in
effect.

          (b) Governmental Authorizations. All permits, approvals, filings and
consents required or advisable to be obtained or made prior to the consummation
of the Acquisition under applicable federal laws or applicable laws of any state
or foreign country having jurisdiction over the Acquisition and the other
transactions contemplated herein shall have been obtained or made, as the case
may be, on terms and conditions satisfactory to the Company, the Shareholders
and Acquiror, acting reasonably.

          (c) Escrow Agreement. The Company, Acquiror, the Shareholders and the
Escrow Agent shall have executed and delivered the Escrow Agreement.

          (d) Registration Agreement. Acquiror and the Shareholders shall have
executed and delivered the Registration Agreement.

          (e) Employment and Non-Compete Agreements. David Grant, Michael
Mahoney and Steven Chan shall have entered into an employment and non-compete
agreement with the Company substantially in the form of Exhibit 7.01(e)(1), (2)
and (3), respectively.

     Section 7.02. Conditions to the Obligations of Acquiror to Effect the
Acquisition. The obligations of Acquiror under this Agreement to effect the
Acquisition shall be subject to the fulfillment or satisfaction, at or prior to
the Closing, of the following conditions, unless waived by Acquiror in its sole
discretion:

          (a) Representations and Warranties Accurate. All representations and
warranties of the Company and the Shareholders contained in this Agreement
(including the Disclosure Schedule hereto), and all written information required
to be delivered to Acquiror by the Company or any Shareholder on or prior to the
Closing Date pursuant to this Agreement, shall be true in all respects as of the
date when made and on and as of the Closing Date.


                                      -24-



<PAGE>


          (b) Performance by the Company and the Shareholders. The Company and
each of the Shareholders shall have performed and complied in all material
respects with all agreements, covenants and conditions required by this
Agreement to be performed and complied with by the Company or any Shareholder
prior to or on the Closing Date.

          (c) Consents. Any consent required for the consummation of the
Acquisition under any Contract or material License shall have been delivered to
Acquiror.

          (d) Opinion of Counsel. Acquiror shall have received the opinion of
Gee & Sunada, counsel to the Company and the Shareholders, dated as of the
Closing Date, in the form of Exhibit 7.02(d) hereto.

          (e) Proceedings; Receipt of Documents. All corporate and other
proceedings taken or required to be taken in connection with the transactions
contemplated hereby and all documents incident thereto shall be reasonably
satisfactory in form and substance to Acquiror and its counsel, and counsel to
Acquiror shall have received all such information and such counterpart originals
or certified or other copies of such documents as Acquiror or its counsel may
reasonably request. Acquiror shall have received such other instruments,
approvals and other documents as it may reasonably request to make effective the
transactions contemplated hereby.

          (f) Due Diligence. Acquiror shall have completed its legal, financial
and business investigation of the Business, the Company's assets and the
liabilities of the Company to its satisfaction, in its sole discretion.

          (g) No Material Adverse Effect. Since the Balance Sheet Date, there
shall have been no change in the Business, assets, liabilities, prospects,
results of operations or financial condition of the Company which has had or is
reasonably likely to have a Material Adverse Effect on the Company.

          (h) Pooling Affiliate Letters. Acquiror shall have received the
Pooling Affiliate Letters referred to in Section 6.06.

          (i) Pooling of Interests. Acquiror shall have received an opinion from
KPMG, in form reasonably satisfactory to Acquiror, to the effect that the
Acquisition would be properly accounted for as a "pooling of interests" in
accordance with generally accepted accounting principles and all published
rules, regulations and policies of the U.S. Commission.

          (j) Fairness Opinion. Acquiror shall have received from Alex. Brown &
Sons, Inc., its financial advisor, an opinion to the effect that, as of the date
hereof, the consideration to be paid in the Acquisition is fair, from a
financial point of view, to Zygo and its stockholders, and Alex. Brown & Sons,
Inc. shall not have withdrawn such opinion on or prior to the Closing Date.


                                      -25-



<PAGE>


          (k) Supporting Documents. Acquiror and its counsel shall have received
a certificate of the President and Treasurer of the Company dated the Closing
Date and certifying that the conditions set forth in Sections 7.02(a), 7.02(b)
and 7.02(g) hereof have been satisfied, and certificates of the Secretary or
other officer of the Company and other information with respect to the corporate
proceedings and operations and affairs of the Company as Acquiror or counsel to
Acquiror may reasonably request. All such documents shall be satisfactory in
form and substance to Acquiror and its counsel.

     Section 7.03. Conditions to the Obligations of the Company and the
Shareholders to Effect the Acquisition. The obligations of the Company and the
Shareholders under this Agreement to effect the Acquisition shall be subject to
the fulfillment or satisfaction, at or prior to the Closing of the following
conditions, unless waived by the Company in its sole discretion:

          (a) Representations and Warranties Accurate. All representations and
warranties of Acquiror contained in this Agreement, and all written information
required to be delivered to the Company by Acquiror on or prior to the Closing
Date pursuant to this Agreement, shall be true in all respects as of the date
when made and on and as of the Closing Date.

          (b) Performance by Acquiror. Acquiror shall have performed and
complied in all material respects with all agreements, covenants and conditions
required by this Agreement to be performed and complied with by it prior to or
on the Closing Date.

          (c) Proceedings. All corporate and other proceedings taken or required
to be taken by Acquiror in connection with the transactions contemplated hereby
and all documents incident thereto shall be reasonably satisfactory in form and
substance to the Company and the Shareholders and counsel to the Company and the
Shareholders.

          (d) Opinion of Counsel. The Company shall have received the opinion of
Fulbright & Jaworski L.L.P., counsel to Acquiror, dated as of the Closing Date,
in the form of Exhibit 7.03(d) hereto.

                                  ARTICLE VIII.

                                 INDEMNIFICATION

     Section 8.01. Indemnification by the Shareholders.

          (a) Joint Indemnification. Subject to the provisions of Section 8.03,
the Shareholders shall jointly and severally indemnify, defend and hold harmless
Acquiror and its officers, directors, employees, agents and representatives from
and against and in respect of any and all losses, damages, expenses,
liabilities, claims, settlements, assessments and judgments (including
reasonable costs and attorney's fees and other expenses arising out of any
claim, or the defense, settlement or investigation thereof, made with respect to
any of the foregoing) (collectively, "LOSSES") incurred or suffered


                                      -26-



<PAGE>


by Acquiror, arising out of, based upon or resulting from any inaccuracy,
misrepresentation or breach of representation and warranty contained in Article
III of this Agreement or non-fulfillment of any covenant or agreement of the
Company or any Shareholder contained in this Agreement or any certificate or
instrument furnished pursuant hereto; provided, however, that for purposes of
determining the amount of any Losses incurred or suffered by Acquiror under this
subsection 8.01(a) (but not as to whether there is any inaccuracy,
misrepresentation or breach of representation and warranty), all such
representations and warranties shall be deemed to have been made without any
qualification as to materiality or Knowledge.

          (b) Several Indemnification. Subject to the provisions of Section
8.03, each Shareholder shall severally indemnify, defend and hold harmless
Acquiror and its officers, directors, employees, agents and representatives from
and against and in respect of any and all Losses incurred or suffered by
Acquiror, arising out of, based upon or resulting from any inaccuracy,
misrepresentation or breach by such Shareholder of any of his representations
and warranties contained in Article IV of this Agreement or any certificate or
instrument furnished pursuant hereto.

     Section 8.02. Indemnification by Acquiror. Subject to the provisions of
Section 8.03, Acquiror shall indemnify, defend and hold harmless each of the
Shareholders and his successors and assigns, from and against and in respect of
any Losses incurred or suffered by such Shareholder or his successors and
assigns, arising out of, based upon or resulting from any inaccuracy,
misrepresentation or breach by Acquiror of any of its representations and
warranties or non-fulfillment of any of its respective covenants or agreements
contained in this Agreement or any certificate or instrument furnished pursuant
hereto.

     Section 8.03. Limitations. (a) No party hereto shall be entitled to make
any claim for indemnification under this Article VIII with respect to the
inaccuracy, misrepresentation or breach of any representation and warranty or
non-fulfillment of any covenant or agreement contained in this Agreement after
the date on which such representation, warranty, covenant or agreement ceases to
survive pursuant to Section 8.06.

          (b) Notwithstanding anything to the contrary contained herein,
Acquiror shall not be entitled to indemnification from the Company or any
Shareholder pursuant to either Section 8.01 or 8.02 hereof, until the aggregate
losses suffered by Acquiror (from actions or inactions of any of the Company,
the Shareholder(s), or any combination of any of them) and for which
indemnification is available to Acquiror hereunder exceed $250,000, whereupon
Acquiror shall be entitled to claim indemnification for all losses suffered by
it and for which indemnification is available to it hereunder.

          (c) Any claim by one party to this Agreement against any other party
to this Agreement for breach of any covenant or representation and warranty in
this Agreement shall be subject to the limitations set forth in this Article
VIII; provided, however, that such limitations shall not apply to any fraud
claim.


                                      -27-



<PAGE>


     Section 8.04. Notice and Defense of Claims. Each party entitled to
indemnification under this Article VIII (the "INDEMNIFIED PARTY") shall give
written notice to the party or parties required to provide indemnification (the
"INDEMNIFYING PARTY") promptly after such Indemnified Party has actual knowledge
of any claim as to which indemnity may be sought, and, in the event of any claim
or demand asserted by a third party; but the failure of any Indemnified Party to
timely give written notice as provided herein shall not relieve the Indemnifying
Party of its obligations under this Agreement unless such failure to give notice
materially adversely affected the ability of the Indemnifying Party to defend
such claim. Upon receipt of any such notice, the Indemnifying Party may elect to
defend the Indemnified Party against such claim, suit, action or proceeding, at
its own expense, through counsel of its own choice that is reasonably acceptable
to the Indemnified Party, and from and after such election and for so long as
the Indemnifying Party is diligently prosecuting such defense, the Indemnifying
Party shall not be responsible for any legal fees or expenses of the Indemnified
Party, other than reasonable costs of investigation and subject to Section 8.03
hereof. Failing such election or reasonably diligent prosecution, the
Indemnified Party shall have the right to (but shall not be obligated to) pay,
compromise or defend the same. In any claim, suit, action or proceeding defended
by the Indemnifying Party, the Indemnified Party may participate, at its
expense, in the defense of the same. The Indemnifying Party in the defense of
any such claim, suit, action or proceeding shall not, except with the consent of
the Indemnified Party, consent to the entry of any judgment or entry into any
settlement which (i) does not include as an unconditional term thereof the
giving by the claimant or plaintiff to the Indemnified Party of a release from
all liability in respect to such claim, suit, action or proceeding or (ii)
requires the performance of any act (other than the payment of moneys for which
such Indemnified Party is held harmless hereunder) or the agreement not to
perform any act by the Indemnified Party. The Indemnified Party shall not settle
or compromise any such claim without the prior written consent of the
Indemnifying Party, which consent shall not be unreasonably withheld. The
Indemnified Party shall furnish such information regarding itself or the claim
in question as the Indemnifying Party may reasonably request in writing and as
shall be reasonably required in connection with defense of such claim, suit,
action or proceeding resulting therefrom.

     Section 8.05. Non-Exclusive Remedy. Indemnification pursuant to this
Agreement shall not preclude Acquiror or any of the Shareholders from exercising
any other remedies it or such Shareholder may have, including, without
limitation, in the case of Acquiror, pursuant to the Escrow Agreement, subject
to the limitations set forth in Sections 8.03 and 8.04 hereof.

     Section 8.06. Survival of Representations and Warranties. All of the
representations, warranties and agreements contained in this Agreement shall
survive the Closing and shall remain in full force and effect until the earlier
of (i) the date on which KPMG's report on their audit of Acquiror's financial
statements for the fiscal year during which the Closing occurs or (ii) the first
anniversary of the Closing Date (such earlier date being referred to as the
"Termination Date") and, thereafter, to the extent a claim, in writing and
setting forth the specific facts giving rise to such claim, is made prior to
such expiration with respect to any breach of such representation, warranty or
agreement, until such claim is finally determined or settled; provided,


                                      -28-



<PAGE>


however, that the representations, warranties and agreements of the Company and
the Shareholders relating to Taxes and governmental assessments shall remain in
full force and effect until the expiration of the applicable statute of
limitations (including any extensions thereof); and, provided further, that the
representations and warranties set forth in Sections 3.03, 3.05, 3.17, 3.19,
4.01, 4.02 and 5.04 shall survive and remain in full force and effect forever.

     Section 8.07. Reimbursement. Subject to Section 8.03 hereof, at the time
that the Indemnified Party shall suffer a loss because of a breach of any
warranty, representation or covenant by the Indemnifying Party or at the time
the amount of any liability on the part of the Indemnifying Party under this
Agreement is determined (which in the case of payment to third persons shall be
the earlier of (i) the date of such payment, provided that the Indemnified Party
has fully complied with Section 8.04, or (ii) the date that a court of competent
jurisdiction shall enter a final judgment, order or decree (after exhaustion or
expiration of appeal rights) establishing such liability) (such loss or amount
being hereinafter referred to as the "INDEMNITY CLAIM")), the Indemnifying Party
shall forthwith, upon notice from the Indemnified Party, pay to the Indemnified
Party the amount of the Indemnity Claim. The Indemnity Claim shall be paid first
from the Escrow Fund (as such term is defined in the Escrow Agreement), to the
extent then remaining, as provided in the Escrow Agreement. If such amount is
not paid forthwith, then the Indemnified Party may, at its option, take legal
action against the Indemnifying Party for reimbursement in the amount of its
Indemnity Claim. For purposes hereof the Indemnity Claim shall include the
amounts so paid, or determined to be owing by the Indemnified Party together
with costs and reasonable attorney's fees and interest on the foregoing items
(but only to the extent pre-judgment interest due the Indemnified Party is not
already included within such items) at the rate of ten percent (10%) per annum
from the date the Indemnity Claim is due from the Indemnifying Party to the
Indemnified Party as hereinabove provided until the Indemnity Claim shall be
paid.

     In addition to its other obligations under this Section 8.07, the
Indemnifying Party agrees that, as an interim measure during the pendency of any
claim, action, investigation, inquiry or other proceeding for which
indemnification may be required pursuant to this Article VIII, it will, if it
does not assume the defense thereof, reimburse the Indemnified Party on a
monthly basis for all reasonable legal fees or the out-of-pocket expenses
reasonably incurred in connection with investigating or defending any such
claim, action, investigation, inquiry or other proceeding, notwithstanding the
absence of a judicial determination as to the propriety and enforceability of
the Indemnifying Party's obligation to indemnify the Indemnifying Party for such
expenses and the possibility that such payments might later be held to have been
improper by a court of competent jurisdiction. To the extent that any such
interim reimbursement payment is so held to have been improper, the Indemnified
Party shall promptly return it to the Indemnifying Party, together with interest
at the rate of ten percent (10%) per annum. Any such interim reimbursement
payments which are not made to the Indemnified Party within thirty (30) days of
a request for reimbursement shall bear interest at the rate of ten percent (10%)
per annum from the date of such request.


                                      -29-



<PAGE>


     Section 8.08. Other Indemnification Provision. Each of the Shareholders
hereby agrees that such Shareholder will not make any claim for indemnification
against the Company by reason of the fact that he was a shareholder, director,
officer, employee or agent of the Company or was serving at the request of the
Company as a director, officer, employee or agent of another entity (whether
such claim is for judgments, damages, penalties, fines, costs, amounts paid in
settlement, losses, expenses or otherwise and whether such claim is pursuant to
any statute, charter document, by-law, agreement or otherwise) with respect to
any action, suit, proceeding, complaint, claim or demand brought by Acquiror
against such Shareholder (whether such action, suit, proceeding, complaint,
claim or demand is pursuant to this Agreement, applicable law or otherwise).

                                   ARTICLE IX.

                               GENERAL PROVISIONS

     Section 9.01. Effect of Due Diligence. No investigation by or on behalf of
Acquiror into the business, operations, prospects, assets or condition
(financial or otherwise) of the Company shall diminish in any way the effect of
any representations or warranties made by the Company or any of the Shareholders
in this Agreement or shall relieve the Company or any of the Shareholders of any
of their respective obligations under this Agreement. No investigation by or on
behalf of the Company or the Shareholders into the business, operations,
prospects, assets or condition (financial or otherwise) of Acquiror and the Zygo
Subsidiaries shall diminish in any way the effect of any representations or
warranties made by Acquiror in this Agreement or shall relieve Acquiror of any
of its obligations under this Agreement.

     Section 9.02. Expenses. Except as hereinafter provided, all costs and
expenses incurred in connection with this Agreement and the transactions
contemplated hereby shall be paid by the party incurring the same. All costs and
expenses incurred by the Company or the Shareholders shall be paid prior to the
Closing Date or other suitable arrangements acceptable to Acquiror with respect
thereto shall be made.

     Section 9.03. Successors and Assigns. This Agreement will inure to the
benefit of and be binding upon the parties hereto and their respective
successors and permitted assigns, heirs, executors, administrators and legal
representatives. Neither this Agreement nor any of the rights, interests or
obligations hereunder shall be assigned by any of the parties hereto without the
prior written consent of the other parties hereto.

     Section 9.04. Entire Agreement. This Agreement and the other documents
referred to herein contain the entire agreement among the parties hereto with
respect to the transactions contemplated hereby, and controls and supersedes any
prior understandings, agreements or representations by or between the parties,
written or oral, which conflicts with, or may have related to, the subject
matter hereof in any way.

     Section 9.05. Notices. All notices or other communications hereunder shall
be in writing and shall be deemed to have been duly given if delivered
personally or sent

                                      -30-



<PAGE>


by telefax communication, by recognized overnight courier marked for overnight
delivery, or by registered or certified mail, postage prepaid, addressed as
follows:

          (a) If to the Company or the Shareholders, 3541 Old Conejo Road #119,
Newbury Park, CA 91320-2158, Attention: David Grant (telefax number (805)
498-5237); with a copy to Richard Gee, Esq., Gee & Sunada, 655 Deep Valley
Drive, Suite 125, Rolling Hills Estates, California 90274 (telefax number (310)
544-7162),

          (b) If to Acquiror, Laurel Brook Road, Middlefield, Connecticut 06455-
0448, Attention: Gary K. Willis (telefax number 860-347-8372); with a copy to:
Fulbright & Jaworski L.L.P., 666 Fifth Avenue, New York, New York 10103,
Attention: Paul Jacobs, Esq. (telefax number 212-752-5958),

or such other addresses as shall be furnished by like notice by such party. All
such notices and communications shall, when telefaxed (immediately thereafter
confirmed by telephone), be effective when telefaxed, or if sent by nationally
recognized overnight courier service, be effective one business day after the
same has been delivered to such courier service marked for overnight delivery,
or, if mailed, be effective when received.

     Section 9.06. Applicable Law. This Agreement shall be governed by, and
construed in accordance with, the internal laws of the State of Connecticut,
without reference to or application of any conflicts of laws principles.

     Section 9.07. 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.

     Section 9.08. Amendments and Waivers. No amendment of any provision of this
Agreement shall be valid unless the same shall be in writing and signed by the
Company, Acquiror and Shareholders owning a majority-in-interest of the
outstanding shares of Company Stock. 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.

     Section 9.09. 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.

     Section 9.10. Construction. The parties have participated jointly in the
negotiation and drafting of this Agreement. In the event an ambiguity or
question of intent or interpretation arises, this Agreement shall be construed
as if drafted jointly by the parties and no presumption or burden of proof shall
arise favoring or disfavoring any party by virtue of the authorship of any of
the provisions of this Agreement.

                                      -31-



<PAGE>


     Section 9.11. Counterparts. This Agreement may be executed in one or more
counterparts, each of which shall be deemed an original, but all of which
together shall constitute one and the same instrument.

     Section 9.12. Headings. The headings used in this Agreement are for
convenience only and are not to be considered in construing or interpreting any
term or provision of this Agreement.


                                      -32-



<PAGE>



     IN WITNESS WHEREOF, this Agreement has been duly executed and delivered by
the duly authorized officers of the parties hereto as of the date first written
above.


                                          ZYGO CORPORATION


                                          By: /s/ GARY K. WILLIS
                                              ---------------------------------
                                              Name:  Gary K. Willis
                                              Title: President



                                          SIGHT SYSTEMS, INC.


                                          By: /s/ DAVID GRANT
                                              ---------------------------------
                                              Name:  David Grant
                                              Title: President



                                          SHAREHOLDERS:


                                              /s/ DAVID GRANT
                                              ---------------------------------
                                                  David Grant


                                              /s/ MICHAEL A. MAHONEY
                                              ---------------------------------
                                                  Michael A. Mahoney


                                              /s/ STEVEN CHAN
                                              ---------------------------------
                                                  Steven Chan


                                              /s/ FRED M. HOUSTON
                                              ---------------------------------
                                                  Fred M. Houston


                                      -33-



<PAGE>


<TABLE>
                                            SCHEDULE 1
<CAPTION>

                                                                                       Net Zygo
                                   Shares of                                         Shares Being
       Shareholder's             Company Stock       Total Zygo        Escrowed      Issued to the
           Name                   Owned (and           Shares            Zygo         Shareholder
       and Address                Being Sold)       Being Issued        Shares        at Closing
       -----------                -----------       ------------        ------        ----------
<S>                                <C>                 <C>              <C>              <C>    
David Grant ...................    2002                201,180          10,500           190,680
3032 Camino Del Zuro
Thousand Oaks, CA. 91360

Michael A. Mahoney ............     286                 28,740           1,500            27,240
10101 Desoto Avenue #6
Chatsworth, CA. 91311

Steven Chan ...................     286                 28,740           1,500            27,240
1348 E. Hillcrest Drive #78
Thousand Oaks, CA. 91360

Fred M. Houston ...............     286                 28,740           1,500            27,240
3266 Valewood Circle
Thousand Oaks, CA. 91360
                                   -----               -------          ------           -------
         Totals ...............    2,860               287,400          15,000           272,400
                                   =====               =======          ======           =======
                                   
</TABLE>


                      SHARE PURCHASE AND TRANSFER AGREEMENT

                                     between

1.    Dipl. Phys. Heiko Wasmund,
      born on October 15, 1940 in Flensburg,
      residing at Lessingstrasse 17,
      35614 A(beta)lar, Germany

      hereinafter referred to as "Seller",

                                       and

2.    Technical Instrument Company with its business address at 650 North Mary
      Avenue, Sunnydale, California 94086, USA

      hereinafter referred to as "Buyer"

3.    Syncotec Neue Technologien und Instrumente GmbH, Loherstrasse 4, 35614
      A(beta)lar, a company registered in the Commercial Register of Wetzlar
      under HRB Nr. 750, Germany

      hereinafter referred to as the "GmbH"

<PAGE>

4.    Helga Wasmund,

      born on March 13, 1940 in A(beta)lar, Germany
      residing at Lessingstrasse 17
      35614 A(beta)lar, Germany
      hereinafter referred to as "Mrs. Wasmund"

     WHEREAS, the GmbH was established by Seller in 1983 for the purpose of
developing, manufacturing and distributing high technology products in Europe;
and

     WHEREAS, the GmbH has a stated capital of one hundred thousand (DM100,000)
Deutsche Mark, consisting of two shares with a par value of fifty thousand
(DM50,000) Deutsche Mark each; and

     WHEREAS, pursuant to a Share Purchase and Transfer Agreement made between
Seller and Buyer on June 30, 1997, by notarial deed, recorded at notary Roger
Zatzsch, Frankfurt/ Main, No Z434/ 1997, Buyer acquired from Seller one share
with a par value of fifty thousand (DM50,000) Deutsche Mark, representing fifty
(50%) percent of the equity of GmbH; and

     WHEREAS, Seller remains the owner of one (1) GmbH share with a par value of
fifty thousand (DM50,000) Deutsche Mark, representing fifty (50%) percent of the
total equity of GmbH (hereinafter the "Share"); and

     WHEREAS, Seller is interested to sell the Share and the Buyer which is a
wholly owned subsidiary of Zygo Corporation ("Zygo"), based on the
representations and warranties made by Seller and in accordance with the
provisions of this Agreement, is interested in acquiring the Share; and


                                      -2-
<PAGE>

     WHEREAS, Seller and Buyer are desirous to consummate this Share Purchase
and Transfer Agreement simultaneously herewith.

NOW, THEREFORE, the parties agree as follows:

                                       I.

                       Takeover Accounts; Indemnification

1.   Buyer and Seller will cause the GmbH after June 30, 1997, in cooperation
     with the tax adviser Steuerburo Scheid, An der Limpseit 26 D - 35630
     Ehringshausen, Germany ("Seller's Accountant"), to prepare its financial
     tax statements (balance sheet and profit and loss account) as of June 30,
     1997 ("Balance Sheet Date"). These financial statements ("Takeover
     Accounts") shall be prepared in accordance with accounting and valuation
     principles generally accepted in the Federal Republic of Germany and such
     accounting and valuation principles generally accepted in the Federal
     Republic of Germany shall be applied consistently and without change as
     used in the December 31, 1996 year-end accounts of the GmbH including
     without limitation adjustments and depreciation.

2.   Buyer will instruct the Accounting Department of its parent company (the
     "Accounting Department") and in co-operation with KPMG Deutsche
     Treuhand-Gesellschaft ("Buyer's Accountant") to review the Takeover
     Accounts. Seller and the GmbH will permit the Accounting Department and
     Buyer's Accountant to 


                                      -3-
<PAGE>


     carry out this review and will give them access to all books, records and
     information as is necessary to carry out such review. In particular, they
     shall permit the Accounting Department and the Buyer's Accountant to
     participate in a physical inventory taking as of July 31, 1997. The
     Managing Director of the GmbH will give the customary declaration of
     completeness for the Takeover Accounts.

3.   If the Accounting Department cannot agree with the Seller's Accountant on
     the Takeover Accounts prepared by the GmbH, the points at issue shall be
     decided with binding effect on both Parties hereto by an arbitrator expert
     (Schiedsgutachter). If the Parties cannot agree on the arbitrator to be
     appointed, he or she shall be appointed, at the request of either Party, by
     the Institut der Wirtschaftsprufer e.V., Dusseldorf. The fees of such
     arbitration shall be evenly split among the Parties. It is understood and
     agreed that the decision of the arbitrator experts shall be binding solely
     for the purposes of the computation of the consideration for the Shares, as
     provided in s. IV. hereof.

4.   The Seller undertakes to indemnify

     (a)  the GmbH and the Buyer against any and all (i) liabilities (whether
          accrued or contingent and including tax liabilities) and risks
          existing on the Balance Sheet Date or arising from acts, omissions,
          events or circumstances occurring at any time up to and including the
          date of the execution of this Share Purchase and Transfer Agreement
          (the "Closing Date") to the extent that such liabilities or risks are
          not shown or reserved against in the Takeover Accounts, except those
          risks which are


                                      -4-
<PAGE>

          fully covered by the GmbH's insurance policies and have been
          acknowledged by such insurers or (ii) any misrepresentation or breach
          of covenant by or on the part of the GmbH hereunder;

     (b)  the GmbH and Buyer from and against all personal liabilities
          (including tax liabilities) of Seller to the extent that the GmbH or
          Buyer should, for any reason whatsoever be held responsible for such
          liabilities or such responsibility should be asserted.

     The indemnification provided for in subsection 4(a)(i) above is limited to
50% (which represent the Seller's pro-rata-share in GmbH's capital) of such
liabilities.

                                       II.

                           Sale and Transfer of Share

1.   Seller hereby sells, transfers and assigns to Buyer all right, title and
     interest in his GmbH share as defined in the Recitals above with a par
     value of fifty thousand (DM50,000) Deutsche Mark, which share represents
     fifty (50%) percent in the stated capital of GmbH, including all and any
     rights attached and connected with the ownership of such Share. Buyer
     accepts such sale, transfer and assignment of the Share. The transfer of
     the Share and its assignment as well shall take place simultaneously
     herewith.


                                      -5-
<PAGE>

     The transfer shall be deemed between the parties effective as of September
     1, 1997.

2.   The shareholders' meeting of GmbH has approved and GmbH approves the sale
     and transfer pursuant to Sect. 9 of the Articles of Association. A
     certified copy of the resolution shall be attached hereto as Exhibit 1.

3.   The GmbH hereby acknowledges the transfer pursuant to Sect. 16 para. 1
     German GmbH-Law.

4.   Buyer and Seller as well as GmbH acting through its managing director, by
     waiving all formalities under statutory laws and under the Articles of
     Incorporation, hereby approve the sale and transfer of the Share as
     described above to the Buyer.

5.   Seller represents and warrants to Buyer that the Share represents fifty
     (50%) percent of the entire share capital of the GmbH and that the Share is
     fully paid up in an amount equal to the nominal value and not repaid and
     not subject to assessments of any kind, free and clear from all liens,
     charges and encumbrances and that Seller is free to make this disposition
     of the Share to Buyer, and that all required corporate action has been duly
     taken. There are no options, warrants, agreements or other rights
     outstanding to acquire any shares of GmbH.


                                      -6-
<PAGE>


                                      III.

                                   Management

Commencing on September 1, 1997, Seller shall continue to serve as managing
director of GmbH pursuant to a new three (3) year employment agreement. The
Draft Employment Agreement is attached to this Share Purchase and Transfer
Agreement as Exhibit 2 for evidentiary purposes.

                                       IV.

                                  Consideration

1.   The entire consideration (the "Consideration") for the sale and transfer of
     the Share of GmbH sold to Buyer pursuant to Part II above, and all
     transactions described above in the recitals and all other obligations
     undertaken by Seller hereunder shall be the purchase price (the "Purchase
     Price") for the Share.

2.   The Purchase Price shall be the aggregate of the amount of two million six
     hundred fifty thousand (DM 2,650,000) Deutsche Mark, plus fifty (50%)
     percent of the net book value (net value of assets less net value of
     liabilities) of GmbH as of June 30, 1997 as reported on the Takeover
     Accounts (the "Aggregate Closing Cash Purchase Price").


                                      -7-
<PAGE>

3.   Except as provided in Part VII, Section 6, within five (5) days from the
     execution of this Share Purchase and Transfer Agreement, Buyer shall pay
     two thirds (2/3) of the Purchase Price in the form of a wire transfer to
     Seller at his bank account No. 9449358 00 with Dresdner Bank AG in
     Giessen/Wetzlar (SWIFT DRESD DE FF 513/BLZ 513 800 40); and shall pay the
     remaining third by delivery of registered shares of common stock of Zygo
     Corporation to Seller. The calculation of the number of Zygo shares to be
     so delivered shall be based upon the average closing price on the NASDAQ
     during the ten (10) business days immediately preceding the Closing Date,
     converted to DM at the exchange rate published in the Wall Street Journal
     on the business day immediately preceding the Closing Date.

4.   With respect to the Aggregate Closing Cash Purchase Price the parties agree
     as follows: 

     (a)  As soon as practicable and in any event no later than ninety (90) days
          after the Closing Date, the Buyer shall deliver to the Seller a
          proposed actual balance sheet of the Company as of the Closing Date,
          in accordance with accounting and valuation principles generally
          accepted in the Federal Republic of Germany and on a basis consistent
          with the Takeover Accounts (the "Closing Date Balance Sheet").

     (b)  As soon as practicable but in no event more than thirty (30) days
          after receipt of the proposed Closing Date Balance Sheet, the Seller
          shall inform the Buyer in writing that either the proposed Closing
          Date Balance Sheet is acceptable or object to the proposed Closing
          Date Balance


                                      -8-
<PAGE>

          Sheet in writing setting forth a specific description of the Seller's
          objections (it being agreed that the failure of the Seller to deliver
          such written notice to the Buyer within such thirty (30) day period
          shall be deemed acceptance by the Seller). If the Seller objects as
          provided above and if the Buyer does not agree with the Seller's
          objections, if any (it being agreed that the failure of the Buyer to
          deliver written notice to the Seller of the Buyer's disagreement with
          the Seller's objections shall be deemed acceptance by the Buyer), or
          such objections are not resolved on a mutually agreeable basis within
          thirty (30) days after the Buyer's receipt of the Seller's objections,
          any such disagreement shall be promptly submitted to a mutually
          acceptable accounting firm not employed by any of the parties to this
          Agreement (the "Unaffiliated Firm"). The Unaffiliated Firm shall
          resolve within thirty (30) days after said Unaffiliated Firm's
          engagement by the parties the differences regarding the proposed
          Closing Date Balance Sheet in accordance with accounting and valuation
          principles generally accepted in the Federal Republic of Germany and
          on a basis consistent with the Takeover Accounts and this Agreement.
          The decision of such Unaffiliated Firm shall be final and binding
          upon, and its fees, costs and expenses shall be shared equally by the
          Buyer and the Seller. The Buyer and the Seller shall each bear the
          fees, costs and expenses of its own accountants, if any. Upon
          resolution of any such dispute, the determination of the Closing Date
          Balance Sheet shall be deemed to be final. 


                                      -9-
<PAGE>

     (c)  If the Closing Date Balance Sheet as finally determined pursuant to
          this Section 4. shows that the "net book value" of the Company (i.e.,
          the book value of the assets acquired less the book value of
          liabilities assumed) as at the Closing Date is greater than or less
          than DM1,485,410.00, then the Aggregate Cash Closing Purchase Price
          shall be increased or reduced, as applicable, in the aggregate, for
          fifty (50%) percent of the change. Such amount shall, promptly, but in
          no event later than five (5) Business Days after final determination
          of the Closing Date Balance Sheet, be paid by the Seller to the Buyer
          or returned by the Buyer to the Seller, as applicable.

                                       V.

                         Representations and Warranties

In the execution of this Share Purchase and Transfer Agreement, the Buyer relies
on the accuracy of the representations and warranties made by Seller in the
agreement and hereinafter. Seller herewith expressly represents and warrants as
guaranteed qualities of the GmbH that on today's date and, if different, on and
as of the date of the Closing, the following representations and warranties are
correct:

1.   (a)   The  information  given in the  Preamble  hereto is  complete  and
           accurate in all respects.


                                      -10-
<PAGE>


     (b)   Persons and companies other than Seller and Buyer do not hold
           directly or indirectly any share or other interest in the GmbH of
           any nature whatsoever, nor do they have a right to any such interest
           (including the right to purchase or otherwise acquire an interest in
           the GmbH). The Share is not subject to any rights of third parties.

     (c)   Seller and his relatives (Angehorige) within the meaning of Section
           15 of the German Tax Code (Abgabenordnung) - "Relatives" - do not
           hold any interest whatsoever in any other business entity engaged in
           a business in which GmbH is active except for publicly listed shares
           quoted at a stock exchange.

     (d)   The execution and consummation of this Agreement and the
           transactions and agreements contemplated hereby is valid and binding
           on Seller and does not require the consent or authorization of any
           third party or of any court or administrative authority.

2.   Seller has permitted the Accounting Department and Buyer's Accountant on
     behalf of Buyer to review and analyze the tax accounts of the GmbH since
     December 31, 1993. These accounts submitted by Seller to the Accounting
     Department have been prepared with the care of a conscientious businessman
     in accordance with accounting and valuation principles generally accepted
     in the Federal Republic of Germany and these principles have been applied
     consistently and without change as in prior fiscal years of the GmbH,
     respectively. All ascertainable risks, devaluations and losses have been
     reflected by sufficient depreciation, adjustment in value and reserves. The
     said material is complete


                                      -11-
<PAGE>

     and accurate and presents fairly and completely the financial condition of
     the GmbH respectively at the respective dates and the results of the
     operations of their business for the periods thereby covered. All other
     information given to the Accounting Department was true and accurate and
     was not incomplete in a way as to make any information given misleading.


3.   Since December 31, 1996, there has not been in the GmbH 


     (a)  any change in the business operations or the financial conditions or
          the manner of conducting the business other than changes arising in
          the ordinary course of business, none of which has had a material
          adverse effect on the business operations or the financial condition
          of the GmbH;

     (b)  any damage, including financial damage or loss (whether covered by
          insurance or not) materially adversely affecting any material asset or
          the business operations of the GmbH;

     (c)  the termination or a material change of any material contract of the
          GmbH.

4.   The GmbH has good, unrestricted and unencumbered title to, and possession
     of, all the personal property reflected in the accounts, and such property
     which has been acquired since then. All inventory is in good and saleable
     condition. All property is in good working order and condition. The GmbH
     has all necessary assets to conduct business in a manner similar to that
     conducted in the past and as contemplated to be conducted.

5.   There is no litigation, arbitration or administrative proceeding or
     investigation pending or threatened against the GmbH nor are circumstances
     known to exist


                                      -12-
<PAGE>

     which reasonably might be expected to result in such litigation,
     arbitration, administrative proceedings or investigation, nor is the GmbH a
     party to any other litigation or contentious proceeding.

6.   The GmbH is holding such trademarks, patents and other industrial property
     rights necessary for the conduct of the GmbH's business in the manner
     currently conducted by it. There do not exist any rights of third parties,
     and in particular no industrial property rights of third parties which any
     of the GmbH infringes by its firm name or any part thereof or by any name
     used by it or the conduct of its business or any other act within its
     business. The Seller does not own any industrial rights, especially no
     patent rights, which belong to the business of the GmbH or is related
     thereto.

7.   The GmbH had not significant problems in obtaining in a timely manner and
     at reasonable costs any and all materials (raw, finished and otherwise)
     used or to be used in the business of the GmbH, nor does the GmbH have any
     reason to believe that it will have any significant problems in obtaining
     such materials in future. The GmbH has not received written notice of
     intent to terminate any material contracts or agreements for the purchase
     of the products of the GmbH nor does the GmbH have knowledge of any
     circumstances which are likely to result in a material decrease of GmbH's
     forecasted annual sales for the fiscal year ending December 31, 1997.

8.   The GmbH has

     (a)  duly filed all tax returns up to and including fiscal year 1996 and
          other reports required under the applicable laws with tax and other
          authorities,


                                      -13-
<PAGE>

     (b)  made all current tax prepayments for all applicable taxes, 

     (c)  withheld all taxes, social security charges and other charges to be
          withheld and have paid them to the respective recipient.

9.   Seller and his Relatives and companies and partnerships directly or
     indirectly controlled by Seller and/or his Relatives do not have any
     claims, other than from the existing employment contract of Heiko Wasmund,
     from the property lease agreement of Helga Wasmund, or other rights against
     the GmbH or in any tangible or intangible asset which is used or destined
     to be used in the business of the GmbH.

10.  (a)  The GmbH is not in default under any law or ordinance, or under any
          order of any court or federal, state, municipal or other governmental
          department, commission, board, bureau, agency or instrumentality
          wherever located (other than as may be described elsewhere herein).

     (b)  The GmbH has operated from its inception, and will continue to operate
          through the Closing Date, legally and in compliance with all
          conditions and requirements of all applicable zoning laws, federal,
          state and local statutes, ordinances, rules, regulations, permits,
          policies, guidelines, orders, franchises, authorizations and consents,
          and neither the GmbH nor the Seller have received notice of any
          asserted past or present failure to comply with any law, ordinance,
          regulation, permit, order or requirement. The Seller knows of no other
          facts or circumstances which may result in any future civil,
          administrative or criminal proceedings against the GmbH.

                                      -14-

<PAGE>


     (c)  The GmbH has not transported, stored, treated or disposed, nor has it
          allowed or arranged for any third person to transport, store, treat or
          dispose hazardous waste to or at (1) any location other than a site
          lawfully permitted to receive such waste for such purposes or (2) any
          location designated for remedial action pursuant to the applicable
          laws, as from time to time amended, or any similar federal or state
          statute assigning responsibility for the cost of investigating or
          remediating releases of contaminants into the environment; nor has the
          GmbH performed, arranged for or allowed, by any method or procedure,
          such transportation or disposal in contravention of state or federal
          laws and regulations or in any other manner which gives rise to any
          liability whatsoever; and the GmbH has not disposed of nor has it
          allowed or arranged for third parties to dispose of hazardous waste
          upon property owned or leased by it, except as permitted by law.

11.  The GmbH's performances of services have been conducted in accordance with
     standards of practice ordinarily exercised at the time and within the
     locality where the services were performed, including, without limitation,
     compliance with applicable laws, regulations and standards governing the
     provision of services to the public.

12.  The GmbH leases all of its land and buildings whereon it operates and
     conducts its business and affairs from Seller's spouse, Helga Wasmund. This
     lease contract is valid and binding on the parties thereto until June 30,
     2003. Neither the GmbH nor Helga Wasmund has breached or is in default
     under any material

                                      -15-

<PAGE>

     obligation contained in this lease contract. The execution and consummation
     of this Agreement does not give to Helga Wasmund a right of termination or
     the right to an amendment of such contract. Notwithstanding anything to the
     contrary contained in the lease, Helga Wasmund hereby expressly agrees to
     maintain this lease with GmbH for the remaining term of the current lease
     and, thereafter at the option of GmbH, to renew it for another five (5)
     year term on substantially the same terms as currently provided for. In
     case of such a renewal Helga Wasmund shall be entitled to adjustment of the
     rent equivalent to the inflation increase. The parties hereto agree to
     amend the lease to provide for the foregoing. GmbH owns no real property.

                                       VI.

                          Period until the Closing Date

1.   Seller will give Buyer and its respective representatives access to the
     GmbH's files including all its books and records.

2.   Seller guarantees that until the Closing Date, the GmbH will operate its
     business in the normal manner consistent with past practice and that,
     without the prior written consent of Buyer the GmbH will not enter into any
     contract or assume any liability other than contemplated herein or in the
     ordinary course of business.

                                      -16-

<PAGE>

3.   Seller agrees not to make or to let any person or company or partnership
     make any withdrawals from the GmbH for any purpose whatsoever. For this
     purpose the term "withdrawals" includes the declaration or payment of a
     dividend or interim dividend, any payment to Seller or Relatives under
     lease, employment, advisory or similar contracts and the repayment of, or
     the payment of interest for, any balances on capital, loan or other
     accounts of Seller to the GmbH. Heiko and Helga Wasmund as well as Annette
     Wasmund shall be entitled to withdraw any loan amounts prior to the Closing
     Date, which GmbH received from them prior to the Closing Date.

                                      VII.

                         Liability, Full Implementation

1.   Any inspection, audit, investigation or review made by Buyer before the
     execution of this Agreement, shall in no way affect the representations and
     warranties of Seller contained herein or made in pursuance hereof.

2.   The statute of limitations for any claims hereunder shall be eighteen (18)
     months from the date of the Closing Date unless a longer period is provided
     for the respective claim by the laws of the Federal Republic of Germany.
     Notwithstanding the foregoing, the statute of limitations shall expire,
     with respect to tax liabilities, six months after final assessment
     following the tax audits for the respective periods, of all taxes of the
     GmbH.

                                      -17-

<PAGE>

3.   With respect to the handling of tax matters and changes, if any, which may
     result from a tax audit the following shall apply:

     (a)  Buyer will notify Seller promptly of any tax audit relating to the
          period until the Closing Date. Seller is entitled to participate in
          such tax audit and to comment thereon irrespective of whether the
          respective tax audit concerns business taxes or personal taxes of
          Seller.

     (b)  If as a result of such tax audit there should be an increase of the
          taxes of the GmbH payable for the period up to the Closing Date, these
          taxes shall be borne by Seller and Seller will, if applicable, hold
          the GmbH harmless and indemnified from and against the respective tax
          liabilities. Seller shall not be required to bear an increase of taxes
          and to hold the GmbH harmless and indemnified to the extent such
          increase of taxes results from timing differences and GmbH will
          benefit from a reverse effect during the time after the Closing Date.
          In any event the liability of the Seller shall be limited to 50%
          (Seller's pro-rata-share in GmbH's capital) of the respective amounts.

     (c)  The result of the tax audit shall have no other effects on the present
          Agreement except those described in Paragraph (b) above. In
          particular, profit increases or profit decreases determined by the tax
          office shall neither affect the Purchase Price nor the obligation of
          indemnification in accordance with Paragraph (b). The representations
          and warranties in accordance with Part V above shall be absolute and
          effective, as drafted, and shall not be affected by any tax audit or
          the results thereof.

                                      -18-

<PAGE>

4.   Buyer will grant Seller the right to inspect all business records of the
     GmbH relating to the period prior and up to the Closing Date if this
     inspection is requested for tax reasons or for reasons of defense against
     claims or for other legitimate reasons connected with Seller's former
     interests in the GmbH (but always in a manner of time so as to avoid any
     business interruption or interference with GmbH or Buyer).

5.   Seller undertakes to execute in due form and delivers at the request of
     Buyer also at any time after today's date and without additional
     remuneration any documents and to perform any acts which may be necessary
     in order to comply fully with the purpose of this Agreement.

6.   Buyer shall retain from the Purchase Price an amount of three hundred
     thousand (DM300,000) Deutsche Mark during the above mentioned period of
     eighteen (18) months to secure the faithful performance of the provisions
     in this Paragraph VII and the indemnifications provided hereunder, such
     amount (the "Escrow Amount") to be held in escrow by the acting Notary. The
     Notary shall release the Escrow Amount so held or parts thereof only upon
     mutual instruction to be signed by Seller and Buyer to the bank account
     named in that instruction. Until the expiration of the above mentioned
     eighteen (18) month period, the Notary shall deposit the Escrow Amount on a
     month to month basis on time deposit. The interest on the Escrow Amount
     shall become part of the escrow. After expiration of the above mentioned
     eighteen (18) month period and provided that Buyer and Seller have not
     instructed the Notary otherwise, the Notary shall extend the escrow for any
     amount in dispute until the dispute

                                      -19-

<PAGE>

     between the parties has been finally and irrevocably resolved. The Notary
     shall be entitled to deduct the notarial fees from the amount to be paid.

                                      VIII.

                                 NON-COMPETITION

1.   Seller agrees that during his employment by the GmbH and throughout the
     period ending on the third anniversary of the last day of the scheduled
     term of his Employment Agreement with the GmbH dated September 1, 1997
     (including any extensions thereof) (the "Non-Competitive Period"), Seller
     shall not, directly or indirectly, as owner, partner, joint venturer,
     stockholder, employee, broker, agent, principal, trustee, corporate
     officer, director, licensor, or in any capacity whatsoever engage in,
     become financially interested in, be employed by, render any consultation
     or business advice with respect to, or have any connection with, any
     business engaged in the research, development, testing, design,
     manufacture, sale, lease, marketing, utilization or exploitation of any
     products or services which are designed for the same purpose as, are
     similar to, or are otherwise competitive with, products or services of the
     GmbH, Buyer, Zygo or any of their respective subsidiaries or affiliates, in
     any geographic area where, at the time of the termination or expiration of
     his employment hereunder, the business of the GmbH, Buyer, Zygo or any of
     their respective subsidiaries or affiliates was being conducted or was
     proposed to be conducted in any manner whatsoever

                                      -20-

<PAGE>

     worldwide; provided, however, that Seller may own any securities of any
     corporation which is engaged in such business and is publicly owned and
     traded but in an amount not to exceed at any one time one percent (1%) of
     any class of stock or securities of such corporation. In addition, Seller
     shall not, directly or indirectly, during the Non-Competitive Period,
     request or cause contracting parties, suppliers or customers with whom the
     GmbH, Buyer, Zygo or any of their respective subsidiaries or affiliates has
     a business relationship to cancel or terminate any such business
     relationship with the GmbH, Buyer, Zygo or any of their respective
     subsidiaries or affiliates or solicit, interfere with or entice from the
     GmbH, Buyer, Zygo or any of their respective subsidiaries or affiliates any
     employee (or former employee) of the GmbH, Buyer, Zygo or any of their
     respective subsidiaries or affiliates.

2.   If any portion of the restrictions set forth in this Section VIII should,
     for any reason whatsoever, be declared invalid by a court of competent
     jurisdiction, the validity or enforceability of the remainder of such
     restrictions shall not thereby be adversely affected.

3.   Seller acknowledges that the GmbH, Buyer and/or Zygo conducts business on a
     world-wide basis, that its sales and marketing prospects are for continued
     expansion into world markets and that, therefore, the territorial and time
     limitations set forth in this Section VIII are reasonable and properly
     required for the adequate protection of the business of the GmbH, Buyer,
     Zygo and their respective subsidiaries. In the event any such territorial
     or time limitation is deemed to be unreasonable by a court of competent
     jurisdiction, Seller agrees to

                                      -21-


<PAGE>

     the reduction of the territorial or time limitation to the area or period
     which such court deems reasonable.

4.   The existence of any claim or cause of action by Seller against the GmbH,
     Buyer, Zygo or any of their respective subsidiaries or affiliates shall not
     constitute a defense to the enforcement by the GmbH, Buyer, Zygo or any
     such subsidiary or affiliate of the foregoing restrictive covenants, but
     such claim or cause of action shall be litigated separately.

                                       IX.

                                     General

1.   The costs of GmbH's Accountant shall be borne by GmbH, and those of the
     Accounting Department and Buyer's Accountant shall be borne by Buyer. The
     notary's and court fees as well as transfer taxes and taxes on stock
     exchange dealings, connected with this Agreement shall be borne by Buyer.
     Apart therefrom, each party shall bear the costs of its advisors and
     auditors.

2.   Any changes and amendments to this Agreement shall only be valid if made
     in writing or, if necessary, in notarized form. Declarations to be made
     under this Agreement shall be made in writing unless expressly provided
     otherwise.

3.   Should any provision of this Agreement be or become invalid in whole or in
     part, the validity of the other provisions shall not be affected thereby.
     To the extent


                                      -22-

<PAGE>

     legally possible, the invalid provision shall be replaced by a provision
     corresponding to the meaning and purpose of this Agreement.

4.   This Agreement shall be governed by German law. The courts of Frankfurt/am
     Main shall have exclusive jurisdiction for all disputes arising hereunder,
     except relating to the agreement on the June 30, 1997 Takeover Accounts,
     pursuant to Paragraph I(3) hereof.

5.   The English version of this Agreement shall be binding.

                                      -23-




                                                                   
                               SUBCONTRACT B335l88

                                     between

                   THE REGENTS OF THE UNIVERSITY OF CALIFORNIA

                     LAWRENCE LIVERMORE NATIONAL LABORATORY

                                       and

                                ZYGO CORPORATION



                                  INTRODUCTION
                                  ------------

This is a hybrid subcontract, with fixed price and cost plus fixed fee sections.
The parties to this Subcontract are The Regents of the University of California,
a California corporation, hereinafter called "University," and Zygo Corporation,
hereinafter called "Subcontractor."

The Regents of the University of California have entered into Prime Contract No.
W-7405-ENG-48 with the United States Government, hereinafter called "Government"
represented by the Department of Energy, hereinafter called "DOE," for the
management and operation of the Lawrence Livermore National Laboratory and the
performance of certain research and development work. This Subcontract is
entered into as a subcontract in furtherance of the work provided for under the
Prime Contract.

                                    AGREEMENT
                                    ---------

The parties agree to perform their respective obligations in accordance with the
terms, conditions, and provisions of the attached SCHEDULE OF ARTICLES and any
documents referenced or incorporated therein. This Signature Page and the
SCHEDULE OF ARTICLES collectively constitute the entire Subcontract and shall
supersede all prior proposals, negotiations, representations, or agreements,
whether written or oral.

         ZYGO CORPORATION                          THE REGENTS OF
                                            THE UNIVERSITY OF CALIFORNIA

BY: /s/ GARY K. WILLIS                        BY: /s/ JOHN S. HUNT
    ----------------------------          -------------------------------------
    Gary K. Willis                            John S. Hunt

TITLE: President and CEO                  TITLE: Laboratory Business Manager
       -------------------------          -------------------------------------

DATE: 5/9/97                              DATE: 5-8-97
      --------------------------          -------------------------------------
                                          University Procurement Representative:
                                          Margaret C. Cooke, (510) 423-2178

<PAGE>

                              SCHEDULE OF ARTICLES

                                       FOR

                               SUBCONTRACT B335188

ARTICLE 1.-- SCOPE OF WORK
- --------------------------

A.   The Subcontractor shall conduct certain work generally described as
     Amplifier Finishing Lead Facilitization and Initial Production of Flat
     Optics. The work is more specifically described in the Statement of Work as
     Facilitization (F).

B.   The University may, at its unilateral option, by written notification to
     the Subcontractor require the continued performance of the work described
     in the Statement of Work as Pilot Production (P0), hereafter known as
     Option 1". This option must be exercised no later than 60 days prior to the
     completion of the work defined in paragraph A above.

C.   The University may, by written notification to the Subcontractor require
     the continued performance of the work described in the Statement of Work as
     Initial Production (P1), hereafter known as "Option 2". Written
     notification of the University's desire to exercise this option and price
     it accordingly must be given no later than 120 days prior to the completion
     of the work defined in paragraph B above.

D.   The University may, by unilateral modification to the Subcontract, purchase
     a 24-inch interferometer for the price shown in Article 3 below. This
     interferometer is to be essentially the same as the two to be provided by
     the Subcontractor at no additional cost to the University. This option is
     hereafter known as Option 3". The decision to purchase this additional unit
     will be based, in part, on the input and recommendation of the
     Subcontractor and the results of efforts to provide this capability through
     other means. This option may be exercised at any time during any exercised
     option (F, P0 or P1).

E.   The Subcontractor shall furnish all personnel, supervision, materials,
     supplies, equipment (including two 24-inch interferometers), tools,
     facilities, transportation, testing, and other incidental items and
     services necessary for performance of the work, except for Government
     Property specified herein to be furnished by the University. The
     Subcontractor shall deliver the materials, products, supplies, and reports
     specified, and all residuals.

F.   The work shall be performed by the Subcontractor at the Subcontractor's
     facility located at Middlefield, CT and at other locations approved by the
     University.

G.   Acceptance of the work under this Subcontract shall be based on the
     Subcontractor's performance and completion of the work in consonance with
     high professional standards and compliance with the delivery and reporting
     requirements specified herein.

H.   This Subcontract is a DX-E1 Rated Order, certified for national defense use
     under the DEFENSE PRIORITIES AND ALLOCATIONS SYSTEM. The Subcontractor
     shall comply with the requirements of the Defense Priorities and
     Allocations System regulation (15 CFR Part 700).

ARTICLE 2 -- PERIOD OF PERFORMANCE
- ----------------------------------

A.   The work authorized and described in ARTICLE 1 - SCOPE OF WORK, Paragraph A
     shall be completed by October 31, 1998 unless completely performed prior
     thereto or sooner terminated in accordance with the clause of the GENERAL
     PROVISIONS entitled TERMINATION FOR


                                       -1-


<PAGE>

     CONVENIENCE OF THE GOVERNMENT (FIXED PRICE) for fixed price work, or
     Termination (COST REIMBURSEMENT) for all cost reimbursement work.

B.   The University may extend the period of performance by written notice to
     the Subcontractor, unilaterally exercising any or all of the following
     options:

     1. Option No. 1 (P0):              Inclusive period of performance of
                                          18 months.

     2. Option No. 2 (P1):              Inclusive period of performance of
                                          6 months.

     3. Option No. 3 (Interferometer):  To be completed during the inclusive
                                          period of performance defined at the
                                          time this option is exercised.

     The total period of performance of this Subcontract, inclusive of all
     optional periods, shall not exceed 41 months.

ARTICLE 3 -- FIXED PRICE AND LIMITATION OF OBLIGATION
- -----------------------------------------------------

(For fixed price work only)

A.   Fixed Price -- Authorized Work
     ------------------------------

     The Subcontractor shall perform this Subcontract for the total fixed price
     of NINE MILLION, EIGHT HUNDRED SEVENTY-ONE THOUSAND, EIGHT HUNDRED TEN and
     NO/l00 DOLLARS ($9,871,810.00).

     The fixed price stated above does not include, and the University shall not
     be charged for, any State Sales & Use Tax, as the University holds
     California Seller's State Resale Permit No. SR-CHA 21-135323.

B.   Fixed Price -- Option 2 (if exercised)
     -----------------------

     The fixed price for the work defined as Option 2 in Article 1 above shall
     be negotiated and defined if and when this option is exercised.

C.   Fixed Price -- Option 3 (if exercised)
     -----------------------

     The Subcontractor shall perform the work defined as Option 3 in Article 1
     for the total fixed price of THREE HUNDRED Fifty THOUSAND AND NO/1OO
     DOLLARS ($350,000.00).

D.   Pricing of Adjustments: When costs are a factor in any determination of a
     Subcontract price adjustment pursuant to the "Changes" clause or any other
     provision of this Subcontract, such costs shall be in accordance with the
     contract cost principles and procedures in Part 31 of the Federal
     Acquisition Regulation (48 CFR Part 31), as supplemented or modified by
     DEAR Part 931(48 CFR Part 931) in effect on the effective date of this
     Subcontract.

E.   Limitation Of Obligation -- Available Funds
     -------------------------------------------

     1.   Funds appropriated by the U. S. Congress and made available to the
          University by the Government's obligation of funds to the prime
          contract are the sole source for payment of all work to be done and
          all claims of any type that may be made pursuant to the Subcontract.
          The project will be funded in increments as annual appropriations are
          made by Congress to the Department of Energy for obligation to the
          project by the University. For FY 1997, $5,542,504.00 has been
          appropriated and is presently available for payment ("Available
          Funds"). These funds are expected to cover the period through
          September 30, 1997. For FY 1998, $4,329,306.00 are anticipated to be
          appropriated to cover the balance


                                       -2-


<PAGE>

          of the work from October 1, 1997 through October 31, 1998. While it is
          anticipated that subsequent year appropriations will be made, there is
          no assurance or obligation on the part of the University that this
          will occur. The University has no obligation under this Subcontract to
          make any payments in excess of Available Funds. Should such
          appropriations be made, the University will notify the Subcontractor
          in writing and reserves the unilateral right to modify the amount of
          Available Funds specified in this Subcontract. The University shall
          have no liability whatsoever to the Subcontractor arising out of or in
          any way connected with the Subcontract work or claims arising
          therefrom, save and except such liability as may be paid from funds
          appropriated by the U.S. Congress.

     2.   The Subcontractor is obligated to continue performance of the work
          until such time as the Available Funds are insufficient to pay for the
          work and any claims related thereto. The subcontractor shall give
          notice 30 days in advance of the date upon which the costs of the work
          (defined as actuals plus commitments) constitute 75% of the Available
          Funds. Such notice will be based on review of progress payments made
          to date, monthly status reports, periodic site visits/inspections,
          on-site reviews, etc.

     3.   Upon receipt of such notice, the University within 30 days may elect
          to stop the work pursuant to the General Provision entitled "STOP WORK
          ORDER". At or before the end of that period, the University may elect
          to rescind the stop work order or terminate the Subcontract pursuant
          to the General Provision entitled "TERMINATION FOR CONVENIENCE". This
          Article does not restrict the University's rights to modify the
          Subcontract pursuant to the "CHANGES" Clause.

     4.   Should the Subcontract be amended to allocate additional funds for
          continued performance of the work under this Subcontract, the
          provisions of the preceding paragraphs above shall apply in like
          manner to such additional allotted funds and subsequent dates
          pertaining thereto.

     5.   After notice of termination, the University may at any time prior to
          the effective date of termination, allot additional funds for this
          Subcontract and, with the consent of the Subcontractor, rescind said
          termination.

     6.   The provisions of this Clause with respect to termination shall in no
          way be deemed to limit the rights of the University under the Clause
          hereof entitled "DEFAULT." The provisions of this Clause are limited
          to the allotment of funds for performance of the work of this
          Subcontract.

ARTICLE 4 -- ESTIMATED COST AND FIXED FEE (Option No. 1)
- -----------------------------------------

(For cost reimbursement work only, if the option is exercised through formal
modification to the subcontract.)

A.   Estimate of Cost and Fixed Fee
     ------------------------------

     1.   The estimated cost for the Subcontractor's performance of this
          Subcontract, exclusive of the Subcontractor's fixed fee, is TWO
          MILLION, FOUR HUNDRED THIRTY-ONE THOUSAND, THIRTY AND NO/100 DOLLARS
          ($2,431,030.00).

     2.   The Subcontractor's fixed fee for performance of this Subcontract
          shall be TWO HUNDRED FORTY-THREE THOUSAND, SIXTY AND NO/100 DOLLARS
          ($243,060.00).

     3.   The aggregate of the estimated cost and fixed fee is TWO MILLION SIX
          HUNDRED SEVENTY-FOUR THOUSAND, NINETY AND NO/100 DOLLARS
          ($2,674,090.00).


                                       -3-


<PAGE>

B.   Limitation of Costs
     -------------------

     1.   The aggregate of the estimated cost and fixed fee specified in
          Paragraph A.3, above, is allocated to this Subcontract for work under
          this option.

     2.   Pursuant to the clause of the GENERAL PROVISIONS for Cost Plus Fixed
          Fee Subcontracts entitled LIMITATION OF COST, the estimated cost
          specified in Paragraph A. 1, above, shall be the limit of the
          University's cost liability under this Subcontract, and shall not be
          exceeded by the Subcontractor.

     3.   The Subcontractor shall notify the University's Subcontract
          Administrator in writing at least five (5) working days prior to
          stopping the work to avoid exceeding the estimated cost specified in
          Paragraph A. 1, above.

C.   Revised Estimate of Cost -- The estimated cost for this Subcontract may be
     increased or decreased by a written modification to this Subcontract issued
     by the University's Subcontract Administrator. Modifications shall not be
     considered as authorization to exceed the estimated cost unless they
     contain a statement increasing the estimated cost.

D.   Cost Information -- The Subcontractor shall maintain, at all times while
     the work is in progress, current cost information adequate to reflect the
     cost of performance of this Subcontract and shall prepare and furnish to
     the University such written estimates of cost and information in support
     thereof as the University may request.

ARTICLE 5 -- PRICE AND PAYMENT PROVISIONS   (For fixed price work only.)
- -----------------------------------------

A.   The University will make progress payments as the work proceeds. Progress
     payments shall be based on estimates of work accomplished which meets the
     standards of quality established in the Subcontract and approved by the
     University. Progress payments will be made monthly. The Subcontractor shall
     furnish a breakdown of the progress payment showing the amount included
     therein for each principal category of the work (labor, equipment and
     facilities) which shall substantiate the payment amount requested, in such
     detail as requested by the University.

B.   When the University approves a request for a progress payment, the
     University will retain five (5) percent of the payment amount. However, if
     satisfactory progress has not been made, the University may retain up to
     ten (10) percent of the amount of any payment until satisfactory progress
     is achieved. When satisfactory progress has been re-established, the
     University may release the excess retention for payment.

C.   When the work is substantially complete, the University may retain from
     previously withheld amounts or future progress payments that amount the
     University considers adequate for protection of the University and may
     release to the Subcontractor all the remaining withheld funds. The
     University will pay the total fixed price, including any retention, after:

     1.   Completion and acceptance of all work in accordance to the following
          Facility Acceptance Principles:

          a.   On-site reviews to be held no less than quarterly. These sessions
               will review progress to date and projected progress for the next
               quarter. Laboratory representatives will observe the physical
               plant and all equipment assembled as of that point.

          b.   Review of the Subcontractor's equipment check-out results. The
               Laboratory representatives may review the actual equipment, any
               testing data, etc.


                                       -4-


<PAGE>

          c.   A final on-site review to be held no later than one month after
               Facility completion. This review will include a walk-through,
               demonstration of major equipment as requested by the Laboratory
               representatives, and inspection of the entire facility as deemed
               appropriate.

     2.   Presentation of a properly executed voucher; and

     3.   Presentation of an executed Assignment and Release, releasing all
          claims against the University and Government arising by virtue of this
          Subcontract other than claims, in stated amounts, that the
          Subcontractor has specifically excepted from the operation of the
          release. Another Assignment and Release may be required of the 
          assignee if the Subcontractor's claim to amounts payable under this 
          Subcontract has been assigned.

ARTICLE 6 -- REIMBURSEMENT OF COSTS   (For cost reimbursement work only.)
- -----------------------------------   

A.   Allowability
     ------------

     1.   Costs incurred by the Subcontractor for performance of this
          Subcontract shall be allowable to the extent they are reasonable,
          allocable, and determined to be allowable in accordance with the
          provisions of this Subcontract and the cost principles and procedures
          of Subpart 31.2 of the Federal Acquisition Regulations (48 CFR Part
          31.2), as modified by Subpart 931.2 the DOE Acquisition Regulations
          (DEAR) (48 CFR 931.2).

     2.   Nothing contained in this article shall authorize the estimated cost
          amount stipulated in ARTICLE 4 -- ESTIMATED COST AND FIXED FEE to be
          exceeded.

     3.   Any audit conducted hereunder shall be in accordance with the
          provisions of this Subcontract and the cost principles and procedures
          specified in A.1, above. The University will endeavor to arrange for
          any audit conducted hereunder to be performed by the cognizant
          government audit agency, through the DOE, though reserves the right to
          request that a University Cost/Price Analyst perform that audit if
          agreeable to the Subcontractor.

B.   Provisional Indirect Costs Rates
     --------------------------------

     1.   Pending final audit and determination of indirect costs, the
          Subcontractor shall be paid in accordance with the following
          provisional indirect cost rates, which rates may be revised from time
          to time, but not more frequently than every six (6) months, by a
          unilateral modification to this Subcontract, as recommended or
          approved by the cognizant government audit agency and accepted by the
          University:

                    G&A   15.62%    Duration of P0 (Option No. 1)


     2.   When the actual indirect rates and costs have been determined pursuant
          to the provisions of this Subcontract and the cost principles and
          procedures specified in paragraph A.1 of this article, the difference
          between the actual indirect costs and the provisional payments shall
          be paid; provided, however, that any such payment shall not cause the
          estimated cost amount stipulated in ARTICLE 4 -- ESTIMATED COST AND
          FIXED FEE to be exceeded.

C.   Waiver Of Facilities Capital Cost Of Money
     ------------------------------------------

     The Subcontractor is aware that facilities capital cost of money is an
     allowable cost but waives the right to claim it under this Subcontract.


                                       -5-

<PAGE>

ARTICLE 7 -- INVOICES AND PAYMENT PROCESSING
- --------------------------------------------

A.   Invoices for Fixed Price Work
     -----------------------------

     All invoices shall be submitted to the LLNL Procurement & Materiel's
     Subcontract Administration Support Section ("SASS") at the following
     address:

          University of California
          Lawrence Livermore National Laboratory
          Attention: SASS Group, L-650
          P.O. Box 5012
          Livermore, CA 94551

B.   Payment Terms for Fixed Price Work
     ----------------------------------

     Payment shall be made within 30 days after receipt of the Subcontractor's
     invoice, upon the University's acceptance of any portion of the work
     delivered or rendered for which a price is separately stated or an invoice
     is allowed. Payments made thereafter shall not he subject to any interest
     or late charges. (See also Articles 5 and 10.)

C.   Invoices for Cost Reimbursement Work
     ------------------------------------

     The invoicing and payment of costs incurred shall be in accordance with the
     clause of the GENERAL PROVISIONS for Cost Plus Fixed Fee subcontracts
     entitled ALLOWABLE COST AND PAYMENT. Payment of the fixed fee shall he made
     in monthly installments based upon the percentage of completion of the
     work, as determined or approved by the University's Subcontract
     Administrator, and shall be subject to a 15% fee retention until a reserve
     is set aside in an amount that the University considers necessary to
     protect the University's interest. The reserve shall not exceed 15% of the
     total fixed fee or $100,000.00, whichever is less.

D.   Payment Terms for Cost Reimbursement Work

     All invoices shall substantially comply with the requirements of the
     attached VOUCHER FORM & INSTRUCTONS. All invoices except the completion
     invoice shall be processed for payment within thirty (30) days of receipt;
     provided, however, that payments made thereafter shall not he subject to
     any interest or late charges.

E.   All invoices shall be submitted to the LLNL Procurement & Materiel's
     Subcontract Administration Support Section ("SASS") at the following
     address:

          University of California
          Lawrence Livermore National Laboratory
          Attention:  SASS Group, L-650
          P.O. Box 5012
          Livermore, CA 94551

F.   All invoices requesting reimbursement for any property acquired by the
     Subcontractor shall either include a completed copy of the attached
     PROPERTY IDENTIFICATION LIST for the following classes of property or a
     certification that such property does not include any of the reportable
     classes of property:

     CONTROLLED PROPERTY:   Any property purchased for $5,000.00 or more.

     ATTRACTIVE PROPERTY:   My attractive property, as defined in the attached
                              Property Identification List


                                       -6-

<PAGE>

ARTICLE 8 -- COORDINATION AND ADMINISTRATION
- --------------------------------------------

A.   THE University's Subcontract Administrator for this Subcontract is Margaret
     C. Cooke or her designee. All matters relating to the non-technical
     interpretation; administration, and performance of this Subcontract shall
     be reserved to the University's Subcontract Administrator. The
     Subcontractor shall direct all notices and requests for approval to the
     University's Subcontract Administrator, and any notices or approvals from
     the University to the Subcontractor shall be issued by the University's
     Subcontract Administrator.

B.   The University's Technical Representative under this Subcontract is Dave
     Aikens or his designee, who shall represent the University in matters
     relating to the technical performance of the Scope of Work described
     herein. The University's Technical Representative shall interpret the
     technical requirements of the Scope of Work and determine the emphasis and
     direction of the Subcontractor in the conduct of the work.

ARTICLE 9 -- TECHNICAL DIRECTION AND CHANGES
- --------------------------------------------

A.   Performance of the work under this Subcontract shall be subject to the
     technical direction of the University's Technical Representative. The term
     "technical direction" is defined to include, without limitation:

     1.   Directions to the Subcontractor which redirect the Subcontract effort,
          shift work emphasis between work areas or tasks, require pursuit of
          certain lines of inquiry, fill in details or otherwise serve to
          accomplish the Subcontract Statement of Work;

     2.   Provision of written information to the Subcontractor which assists in
          the interpretation of drawings, specifications, or technical portions
          of the work description; and

     3.   Review and, where required by the Subcontract, approval of technical
          reports, drawings, specifications, and information to be delivered by
          the Subcontractor to the University under the Subcontract.

B.   All technical direction must be within the scope of work stated in the
     Subcontract and shall be issued in writing by the University's Technical
     Representative.

C.   The Subcontractor shall proceed promptly with the performance of technical
     direction of the nature prescribed by this section issued by the
     University's Technical Representative.

D.   The University's Technical Representative is not authorized to issue, and
     the Subcontractor shall not comply with, any technical direction which
     would:

     1.   Constitute a change within the general scope of work, affecting the
          description of the work to be performed, (including applicable
          drawings, designs, and specifications), the time of performance, or
          the place of performance.

     2.   Constitute an assignment of work outside the general scope of the work
          covered by this Subcontract;

     3.   Increase the price for performance of the work or the time required
          for performance of the work;

     4.   Change any expressed term or condition of the Subcontract; or

     5.   Unreasonably interfere with the Subcontractor's ability to perform and
          complete the work, as required under the Subcontract.


                                       -7-


<PAGE>

     Any such technical direction must first be authorized by a written change
     order to this Subcontract issued by the University's Subcontract
     Administrator, as provided in the clause of the GENERAL PROVISIONS entitled
     CHANGES-FIXED PRICE for all fixed price work, or the clause entitled
     CHANGES-COST REIMBURSEMENT for all cost reimbursable work.

E.   If any instruction or direction by the University's Technical
     Representative falls within one of the types described in paragraph D,
     above, the Subcontractor shall not proceed, and shall promptly notify the
     University's Subcontract Administrator in writing, and shall request the
     University's Subcontract Administrator to modify the Subcontract
     accordingly.

     Upon receipt of the notification from the Subcontractor, the University's
     Subcontract Administrator shall promptly:

     1.   Advise the Subcontractor in writing that the technical direction is
          within the scope of the Subcontract effort and does not constitute a
          change under the clause of the GENERAL PROVISIONS entitled
          CHANGES-FIXED PRlCE for all fixed price work, or the clause entitled
          CHANGES-COST REIMBURSEMENT for all cost reimbursable work; or

     2.   Issue a written change order.

ARTICLE 10 -- REPORTS
- ---------------------

A.   Type of Reports

     The Subcontractor shall prepare and submit the following reports to the
     University:

     1.   Monthly Progress Reports -- (Type A) -- Monthly technical and
          financial progress reports shall be submitted by the fifth working day
          after the close of the Subcontractor's accounting month.

          The first monthly report shall establish time-phased work schedules
          and budgetary baselines against which progress can be measured. It
          should also include an updated discussion of the subcontractor's
          approach to executing this subcontract, specifically in terms of the
          facilitization plan as negotiated.

          Subsequent monthly progress reports shall contain a description of
          technical progress to date by task and technical status charted
          against the baseline schedule, and the work planned for the succeeding
          period. Monthly financial status reports shall include all actual
          costs incurred plus outstanding commitments to the end of the month,
          and projected costs for the next reporting period. Variances between
          the baselines and actual experience shall be briefly addressed to
          explain the cause of the variance and identify corrective action as
          appropriate. The financial status report shall support any invoicing
          submitted for the month.

     2.   Statement of Work Required Reporting (Type B) -- These reports shall
          be submitted in accordance with the Statement of Work. The form and
          content of these reports shall be acceptable to the University's
          Technical Representative. If so requested, a draft copy of the reports
          shall be provided to the University's Technical Representative for
          review prior to final submittal.

B.   Distribution of Reports
     -----------------------

     Reports shall be separately addressed and transmitted to:


                                       -8-


<PAGE>

          University of California
          Lawrence Livermore National Laboratory
          Attention: (Intended Recipient; see below)
          P.O. Box 808
          7000 East Avenue
          Livermore, CA 94551

               Type Report       No. of Copies         Recipient
               -----------       -------------         ---------
               A & B                   2               Dave Aikens, L-487
               A & B                   1               Margaret Cooke L-443

     The Subcontractor shall not distribute reports of work under this
     Subcontract to any individual or organization other than those indicated
     above or an authorized representative of the U. S. Department of Energy
     without prior written approval of the University's Subcontract
     Administrator.

C.   Interim Reports

     It is understood that there will be other information exchanged between the
     parties from time to time. These data may be exchanged directly between the
     parties concerned; formal reporting and distribution is not required in
     these cases.

ARTICLE 11 -- PROPERTY
- ----------------------

A.   The Subcontractor shall acquire, and the University shall furnish to the
     Subcontractor, the materials, equipment, supplies, and/or tangible personal
     property items identified below, if any, for use under this Subcontract:

          Subcontractor Acquired Property:
          --------------------------------
               See attached Government Property Listing

          University Furnished Government Property:
          -----------------------------------------
                    See attached Government Property Listing

B.   All property furnished by the University under this Subcontract shall be
     identified, controlled, and dispositioned in accordance with the clause
     incorporated in the SUPPLEMENT TO GENERAL PROVISIONS entitled GOVERNMENT
     FURNISHED PROPERTY -- FIXED PRICE for all property under fixed price work,
     and in accordance with the clause entitled GOVERNMENT PROPERTY (COST
     REIMBURSEMENT) for all CPFF work. Disposition directions and authorization
     shall be provided by the University's Subcontract Administrator or a
     University property representative.

C.   Title to all property acquired by the Subcontractor under this Subcontract
     shall vest in the Government upon the vendor's delivery of such property to
     the Subcontractor. The Subcontractor shall assume the risk and
     responsibility for its loss or damage, except: (1) for reasonable wear and
     tear; (2) to the extent it is consumed in performing this Subcontract; or
     (3) as otherwise provided in this Subcontract.

D.   All property acquired by the Subcontractor or furnished by the University
     under this Subcontract shall be used only for performing this Subcontract
     and shall not be utilized after the completion, expiration or termination
     of this Subcontract, for any reason, unless otherwise provided in this
     Subcontract or approved by the University's Subcontract Administrator or a
     University property representative.


                                       -9-


<PAGE>

E.   The work described herein is based upon the University furnishing optical
     materials to the Subcontractor. The Subcontractor shall not be liable for
     any loss or damage to this optical material while it is in process, except
     if the loss or damage is the result of negligence or willful acts on the
     part of the Subcontractor. The Subcontractor shall not be obligated to
     insure optical material furnished to the Subcontractor by the University.

F.   Non-subcontract Use of Government Owned Equipment:

     1.   Not withstanding the limitation on subcontractor use of Government
          property in the GENERAL PROVISION entitled GOVERNMENT FURNISHED
          PROPERTY, the subcontractor may use the Government owned equipment
          listed above without charge in the performance of, in order of
          preference:

          a.   Subcontracts under Department of Energy Contract
               No. W-7405-ENG-48;

          b.   Prime contracts with the Government that specifically authorize
               such use without charge;

          c.   Subcontracts of any tier under Government prime contracts other
               than W-7405-ENG-48 if the Contracting Officer having cognizance
               of the prime contract (i) approves a subcontract specifically
               authorizing such use or (ii) otherwise authorizes such use in
               writing; and

          d.   Other work to the extent that such use does not interfere with
               work under a, b, and c above.

     2.   The Subcontractor agrees not to include in the price or prices of any
          such contracts or subcontracts the cost of said listed property, or
          any allowance or charge to cover depreciation or amortization. The
          Subcontractor further agrees to allocate the cost of maintenance,
          upkeep, repairs and consumables to the appropriate customers as
          defined in paragraph 1 above, or to the appropriate indirect cost
          pool. In the case of the three ring polishers (RPs) (Reference
          Subcontract No. B334926), the Subcontractor agrees to absorb the cost
          of normally scheduled maintenance, repairs and upkeep during the
          facilitization and initial production phases. If the RPs are used on
          non-subcontract work, these costs may be allocated to the appropriate
          customer, provided the allocation does not include the University. In
          the case of RP consumables, the Subcontractor agrees to provide those
          utilized in the continuous operation of the RPs, while those used in
          the actual processing of optics are to be properly allocated to the
          price of the optics themselves.

     3.   Nothing in this subcontract shall abrogate any right of the University
          to withdraw Government Owned Equipment from the subcontractor upon
          reasonable notice, subject to provision for equitable adjustment that
          may exist in an active University subcontract affected by such
          withdrawal. The University is not responsible for the effect of such
          withdrawal on any work being performed by the subcontractor under any
          other contract or subcontract.

ARTICLE 12 -- APPROVAL OF TECHNICAL DATA
- ----------------------------------------

If this Subcontract requires the Subcontractor to furnish any drawings,
specifications, diagrams, layouts, schematics, descriptive literature,
illustrations, schedules, performance or test data, or other technical data for
approval by the University prior to Subcontractor performance, the approval of
the data by the University shall not relieve the Subcontractor from
responsibility for any errors or omissions in such data, or from responsibility
for complying with the requirements of this Subcontract, except as specified
below. Any work done prior to such approval shall be at the Subcontractor's
risk.


                                      -10-

<PAGE>


If the data includes any variations from the Subcontract requirements, the
Subcontractor shall describe such variations in writing at the time of
submission of the data. If the University approves any such variation(s), a
change order to the Subcontract shall be issued by the University and, if
appropriate, a bilateral modification to the Subcontract shall be negotiated.

ARTICLE 13 -- ASSIGNMENT OF PERSONNEL

The personnel specified below are considered to be essential to the work being
performed hereunder. Prior to diverting any of the specified individuals to
other programs, the Subcontractor shall notify the University's Subcontract
Administrator reasonably in advance and shall submit justification (including
proposed substitutions) in sufficient detail to permit evaluation of the impact
on the performance of this Subcontract. No diversion shall be made by the
Subcontractor without the written consent of the University's Subcontract
Administrator, provided, however, that the University's Subcontract
Administrator may ratify in writing such diversion and that such ratification
shall constitute the consent of the University's Subcontract Administrator. The
list of key personnel may be modified from time to time during the course of
this Subcontract to either add or delete personnel, as appropriate.

          NAME                        TITLE
          ----                        ------
          Rich Boland                 Manufacturing Engineer
          Kevin Grobsky               Optics Engineer (Part-time to NIF)
          Jim Hopkins                 Mechanical Engineer
          Fleming Tinker              Optics Engineer (Part-time to NIF)
          Al Slomba                   NIF Program Manager

          Key Consultants:

          Doug Hoon
          Sol Laufer           
          Paul Forman

The Subcontractor shall not employ on the work any unfit person or anyone not
skilled in the work assigned to him or her and shall devote only qualified
personnel to work under this Subcontract. Should the University deem anyone
employed on the work incompetent or unfit for his or her duties and so inform
the Subcontractor, the Subcontractor shall remove such person from work under
this Subcontract and he or she shall not again, without written permission of
the University, be assigned to work under this Subcontract.

ARTICLE 14 -- QUALITY OF SUPPLIES

Any supplies furnished by the Subcontractor in performance of the work shall, as
a minimum: (1) be new, (2) be as warranted (including used equipment that has
been refurbished), and (3) not contain any counterfeit or suspect materials,
parts, or components. Types of counterfeit or suspect materials, parts and
components include, but are not limited to: electrical components, piping,
fittings, flanges, and fasteners. The University will not accept any work
involving the furnishing of any supplies found by the University to not conform
to these minimum requirements, notwithstanding any inspection or acceptance of
delivery by the University, unless such condition is specifically approved in
writing by the University's Subcontract Administrator.


                                     - 11 -



<PAGE>


ARTICLE IS -- WARRANTY

A.   The Subcontractor agrees that the materials, supplies and services
     furnished under this Subcontract shall be covered by the most favorable
     commercial warranties the Subcontractor gives to any customer for the same
     or substantially similar materials, supplies or services. Such warranties
     shall include performance, workmanship, labor, materials, Subcontractor's
     design or engineering contributions, and the Subcontractor shall furnish
     copies of same to the University, upon request. Notwithstanding any other
     provisions of this Subcontract, the Subcontractor also warrants that the
     materials, supplies or services furnished shall be of the most suitable
     grade and exactly as specified in this Subcontract. The rights and remedies
     provided by such warranties shall be in addition to and shall not limit any
     rights afforded to the University by any other provision of this
     Subcontract.

B.   If a defect is discovered in any item of materials, supplies or services
     covered in this Subcontract, the Subcontractor shall correct at its expense
     such defects as are reported within one (1) year of final acceptance. Upon
     expiration of the applicable warranty period, all such liability shall
     terminate except for fraud, or such gross mistakes as amount to fraud,
     latent defects, or specific failure to comply with the terms of this
     Subcontract.

ARTICLE 16 -- RELEASE OF INFORMATION

Information regarding this Subcontract or the undertaking or any data developed
hereunder shall not be released, and the name of the University, the Lawrence
Livermore National Laboratory, or the Government shall not be used, in any
publications, news releases, advertising, speeches, technical papers,
photographs and other releases of information, without prior written approval
from the University's Subcontract Administrator.

ARTICLE 17 -- ORDER OF PRECEDENCE

Any inconsistencies in the documents comprising this Subcontract shall be
resolved by giving precedence in the following order: (a) the Subcontract
Signature Page; (b) this SCHEDULE OF ARTICLES; (c) the GENERAL PROVISIONS; (d)
the SUPPLEMENT TO GENERAL PROVISIONS, if any (e) any referenced specification or
statement of work; and (f) and other documents, exhibits, and attachments.

ARTICLE 18 -- ASSIGNMENTS

A.   This Subcontract may be assigned by the University to the U.S. Government
     or a successor-in-interest.

B.   Except as to the assignment of payments due hereunder, the Subcontractor
     shall have no right, power or authority to sell, mortgage, transfer or
     assign this Subcontract, any portion hereof, any interest herein or any
     claim hereunder, nor allow or permit any other party or parties to have any
     interest in or use any part of the rights or obligations granted hereunder
     for any purpose whatsoever without the prior written consent of the
     University.

ARTICLE 19 -- DISPUTES

A.   Except as otherwise provided in this Subcontract, any non-routine claim
     under this Subcontract not resolved in the ordinary course of business
     shall be referred in writing to the University's Procurement Representative
     and the executive management of the Subcontractor with the authority to
     settle the dispute. The representatives of the parties, or their designees,
     shall then attempt in good faith to resolve the dispute by negotiations.
     All negotiations shall be confidential and shall be treated as compromise
     and settlement negotiations, for the purposes of application of rules of
     evidence.


                                      -12-



<PAGE>


B.   If the parties still have not been able to resolve the dispute, they may
     thereafter pursue any remedy they may have, at law or in equity, in any
     court of competent jurisdiction. Pending resolution of the dispute, the
     Subcontractor shall proceed diligently with the performance of this
     Subcontract, in accordance with its terms.

ARTICLE 20 -- NOTICES -- LITIGATION AND CLAIM: INABILITY TO PERFORM

A.   The Subcontractor shall immediately notify the University's Subcontract
     Administrator in writing of (1) any action, including any proceeding before
     an administrative agency, filed against the Subcontractor arising out of
     the performance of this Subcontract, and (2) any claim against the
     Subcontractor, the cost or expense of which is allowable under the terms of
     this Subcontract.

B.   If, at any time during the performance of this Subcontract, the
     Subcontractor becomes aware of any circumstances whatsoever which may
     jeopardize its performance of all or any portion of this Subcontract, it
     shall immediately notify the University's Subcontract Administrator in
     writing of such circumstances, and the Subcontractor shall take whatever
     action is necessary to enable the Subcontractor to fulfill its performance
     obligations under this Subcontract.

ARTICLE 21 -- GENERAL PROVISIONS

A.   The clauses listed in the attached GENERAL PROVISIONS shall be applicable
     to this Subcontract, based on the value of the Subcontract, the fixed price
     versus CPFF nature of the work in question, the status of the
     Subcontractor, and the nature and location of the work, as indicated in the
     GENERAL PROVISIONS.

B.   This Subcontract is for the conduct of research, development, or
     demonstration work or design work involving non-standard types of
     construction. Accordingly, the Authorization and Consent, Alternate I,
     Patent Rights, and Additional Data Requirements clauses listed in the
     GENERAL PROVISIONS for such work shall apply. The applicable Patent Rights
     clause of the GENERAL PROVISIONS shall be the clause entitled PATENT
     RIGHTS-RETENTION BY THE CONTRACTOR.

ARTICLE 22 -- INCORPORATED DOCUMENTS

The following documents are hereby incorporated as a part of this Schedule of
Articles of the Subcontract, and are attached hereto.

     o    STATEMENT OF WORK

     o    GOVERNMENT PROPERTY LISTING

     o    GENERAL PROVISIONS FOR FIXED PRICE SUPPLIES & SERVICES (List 600A;
          Rev. 1/15/97) - This GP set applies only to the fixed price portions
          of this subcontract.

     o    GENERAL PROVISIONS FOR COST PLUS FIXED FEE SUBCONTRACTS (List 400;
          Rev. 8/19/96) - This GP set applies only to the cost reimbursement
          portions of this subcontract.

     o    SUPPLEMENT TO GENERAL PROVISIONS, SUBCONTRACT NO. B335188

     o    VOUCHER FORM AND INSTRUCTIONS

     o    PROPERTY IDENTIFICATION LIST


                                (END OF SCHEDULE)


                                      - 13-





                       STANDARD FORM OF AGREEMENT BETWEEN
               OWNER AND CONTRACTOR WHERE THE BASIS OF PAYMENT IS
                    THE COST OF THE WORK PLUS A FEE WITH OR
                       WITHOUT A GUARANTEED MAXIMUM PRICE

                     AIA DOCUMENT A111 -- ELECTRONIC FORMAT

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

THIS DOCUMENT HAS IMPORTANT LEGAL CONSEQUENCES: CONSULTATION WITH AN ATTORNEY IS
ENCOURAGED WITH RESPECT TO ITS COMPLETION OR MODIFICATION. AUTHENTICATION OF
THIS ELECTRONICALLY DRAFTED AIA DOCUMENT MAY BE MADE BY USING AIA DOCUMENT D401.

THE 1987 EDITION OF AIA DOCUMENT A201, GENERAL CONDITIONS OF THE CONTRACT FOR
CONSTRUCTION, IS ADOPTED IN THIS DOCUMENT BY REFERENCE. DO NOT USE WITH OTHER
GENERAL CONDITIONS UNLESS THIS DOCUMENT IS MODIFIED. THIS DOCUMENT HAS BEEN
APPROVED AND ENDORSED BY THE ASSOCIATED GENERAL CONTRACTORS OF AMERICA.

COPYRIGHT 1920, 1925, 1951, 1958, 1961, 1967, 1974, 1978, 1987 BY THE AMERICAN
INSTITUTE OF ARCHITECTS, 1735 NEW YORK AVENUE N.W., WASHINGTON D.C. 20006-5292.
REPRODUCTION OF THE MATERIAL HEREIN OR SUBSTANTIAL QUOTATION OF ITS PROVISIONS
WITHOUT WRITTEN PERMISSION OF THE AIA VIOLATES THE COPYRIGHT LAWS OF THE UNITED
STATES AND WILL BE SUBJECT TO LEGAL PROSECUTION. 

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

AGREEMENT

made as of the 7th day of April in the year of Nineteen Hundred and Ninety Seven

BETWEEN the Owner: 
(Name and address)

Zygo Corporation, Laurel Brook Road, P.O. Box 448, Middlefield, Connecticut
06455-0448
(860) 347-8506

and the Contractor:
(Name and address)
Dacon Corporation, 16 Huron Drive, Natick, Massachusetts 01760-1337
(508) 651-3600

the Project is:
(Name and address)
Zygo Corporation
Office Building Addition -- Project No. 1774
N.I.F. Manufacturing Renovation -- Project No. 1842
Laurel Brook Road, Middlefield, Connecticut 06455-0448

the Architect is:
(Name and address)
PDA Incorporated, 16 Huron Drive, Natick, Massachusetts 01760-1337
(508) 651-3600

The Owner and Contractor agree as set forth below.



<PAGE>


                                    ARTICLE I

                             THE CONTRACT DOCUMENTS

1.1 The Contract Documents consist of this Agreement, Conditions of the Contract
(General, Supplementary and other Conditions), Drawings, Specifications, Addenda
issued prior to execution of this Agreement, other documents listed in this
Agreement and Modifications issued after execution of this Agreement; these form
the Contract, and are as fully a part of the Contract as if attached to this
Agreement or repeated herein. The Contract represents the entire and integrated
agreement between the Parties hereto and supercedes prior negotiations,
representations or agreements, either written or oral. An enumeration of the
Contract Documents, other than Modifications, appears in Article 16. If anything
in the other Contract Documents is inconsistent with this Agreement, this
Agreement shall govern.

                                    ARTICLE 2

                            THE WORK OF THIS CONTRACT

2.1 The Contractor shall execute the entire Work described in the Contract
Documents, except to the extent specifically indicated in the Contract Documents
to be the responsibility of others, or as follows:
N/A

                                    ARTICLE 3

                           RELATIONSHIP OF THE PARTIES

3.1 The Contractor accepts the relationship of trust and confidence established
by this Agreement and covenants with the Owner to cooperate with the Architect
and utilize the Contractor's best skill, efforts and judgment in furthering the
interests of the Owner; to furnish efficient business administration and
supervision; to make best efforts to furnish at all times an adequate supply of
workers and materials; and to perform the Work in the best way and most
expeditious and economical manner consistent with the interests of the Owner.
The Owner agrees to exercise best efforts to enable the Contractor to perform
the Work in the best way and most expeditious manner by furnishing and approving
in a timely way information required by the Contractor and making payments to
the Contractor in accordance with requirements of the Contract Documents.

                                    ARTICLE 4

                 DATE OF COMMENCEMENT AND SUBSTANTIAL COMPLETION

4.1 The date of commencement is the date from which the Contract Time of
Subparagraph 4.2 is measured; it shall be the date of this Agreement, as first
written above, unless a different date is stated below or provision is made for
the date to be fixed in a notice to proceed issued by the Owner.

(Insert the date of commencement, if it differs from the date of this Agreement
or, if applicable, state that the date will be fixed in a notice to proceed.)
April 7, 1997

Unless the date of commencement is established by a notice to proceed issued by
the Owner, the Contractor shall notify the Owner in writing not less than five
days before commencing the Work to permit timely filing of mortgages, mechanic's
liens and other security interests.

<PAGE>

4.2 The Contractor shall achieve Substantial Completion of the entire Work not
    later than

(Insert the calendar date or number of calendar days the date of commencement.
Also insert any requirements for earlier Substantial Completion of certain
portions of the Work, if not stated elsewhere in the Contract Documents)
December 5. 1997; and Final Completion shall be no later than December 26, 1997.

, subject to adjustments of this Contract Time as provided in the Contract
  Documents.

(Insert provisions. if any, for final liquidated damages relating to failure to
complete on time)

                                    ARTICLE 5

                                  CONTRACT SUM

5.1 The Owner shall pay the Contractor in current funds for the Contractor's
performance of the Contract the Contract Sum consisting of the Cost of the Work
as defined in Article 7 and the Contractor's Fee determined as follows:

(State a lump sum, percentage of Cost of the Work or other provision for
determining the Contractor's Fee, and explain how the Contractor's Fee is to be
adjusted for changes in the Work.)

The Lump Sum Fee shall be Two Hundred Ninety Five Thousand and 00/100 Dollars
($295,000.00).

The Fee for all Change Order Work which increases the Guaranteed Maximum Price
will be five percent (5%) of such increase. In addition for all such Change
Orders, the Contractor shall be entitled to be paid ten percent (10%) of the
increase in the Guaranteed Maximum Price for general conditions services.

5.2 GUARANTEED MAXIMUM PRICE (IF APPLICABLE)

5.2.1 The sum of the Cost of the Work and the Contractor's Fee is guaranteed by
the Contractor not to exceed Six Million Ninety Six Thousand Six Hundred and
00/100 Dollars ($6,096,600.00), subject to additions and deductions by Change
Order as provided in the Contract Documents. Such maximum sum is referred to in
the Contract Documents as the Guaranteed Maximum Price. Costs which would cause
the Guaranteed Maximum Price to be exceeded shall be paid by the Contractor
without reimbursement by the Owner.

(Insert specific provisions if the Contractor is to participate in any savings)

5.2.2 The Guaranteed Maximum Price is based upon the following alternates, if
any, which are described in the Contract Documents and are hereby accepted by
the Owner:

(State the numbers or other identification of accepted alternates, but only if a
Guaranteed Maximum Price is inserted in Subparagraph 5.2.1. If decisions on
other alternates are to be made by the Owner subsequent to the execution of this
Agreement, attach a schedule of such other alternates showing the amount for
each and the date until which that amount is valid.)

N/A

5.2.3 The amounts agreed to for unit prices, if any, are as follows:

(State unit prices only if a Guaranteed Maximum Price is inserted in
Subparagraph 5.2.1)

N/A

                                    ARTICLE 6

                               CHANGES IN THE WORK

6.1 CONTRACTS WITH A GUARANTEED MAXIMUM PRICE

6.1.1 Adjustments to the Guaranteed Maximum Price on account of changes in the
Work may be determined by any of the methods listed in Subparagraph 7.3.3 of the
General Conditions.


<PAGE>

6.1.2 In calculating adjustments to subcontracts (except those awarded with the
Owner's prior consent on the basis of cost plus a fee), the terms "cost" and
"fee" as used in Clause 7.3.3.3 of the General Conditions and the terms "costs"
and "a reasonable allowance for overhead and profit" as used in Subparagraph
7.3.6 of the General Conditions shall have the meanings assigned to them in the
General Conditions and shall not be modified by Articles 5, 7 and 8 of this
Agreement. Adjustments to subcontracts awarded with the Owner's prior consent on
the basis of cost plus a fee shall be calculated in accordance with the terms of
those subcontracts.

6.1.3 In calculating adjustments to this Contract, the terms "cost" and "costs"
as used in the above-referenced provisions of the General Conditions shall mean
the Cost of the Work as defined in Article 7 of this Agreement and the terms
"fee" and "a reasonable allowance for overhead and profit" shall mean the
Contractor's Fee as defined in Paragraph 5.1 of this Agreement.

6.2 CONTRACTS WITHOUT A GUARANTEED MAXIMUM PRICE

6.2.1 NONE

6.3 ALL CONTRACTS

6.3.1 NONE

                                    ARTICLE 7

                             COSTS TO BE REIMBURSED

7.1 The term Cost of the Work shall mean costs necessarily incurred by the
Contractor in the proper performance of the Work. Such costs shall be at rates
not higher than the standard paid at the place of the Project except with prior
consent of the Owner. The Cost of the Work shall include only the items set
forth in this Article 7.

7.1.1 LABOR COSTS

7.1.1.1 Compensation of construction workers directly employed by the Contractor
to perform the construction of the Work at the site or, with the Owner's
agreement, at off-site workshops. at the rates set forth on Schedule 1 attached
hereto.

7.1.1.2 Compensation or salaries of the Contractor's supervisory and
administrative personnel when stationed at the site with the Owner's agreement
at the rates set forth on Schedule 1 attached hereto.

(If it is Intended that the wages or salaries of certain personnel stationed at
the Contractor's principal or other offices shall be included in the Cost of the
Work, identify in Article 14 the personnel to be included and whether for all or
only part of their time.)

7.1.1.3 Comensation and salaries of the Contractor's supervisory or
administrative personnel engaged, at factories, workshops or on the road, in
expediting the production or transportation of materials or equipment required
for the Work, but only for that portion of their time required for the Work. at
the rates set forth on Schedule 1 attached hereto.


<PAGE>

7.1.5.4 Fees of testing laboratories for tests required by the Contract
Documents, except those related to defective or nonconforming Work for which
reimbursement is excluded by Subparagraph 13.5.3 of the General Conditions or
other provisions of the Contract Documents and which do not fall within the
scope of Subparagraphs 7.2.2 through 7.2.4 below.

7.1.5.5 Royalties and license fees paid for the use of a particular design,
process or product required by the Contract Documents; the cost of defending
suits or claims for infringement of patent rights arising from such requirement
by the Contract Documents; payments made in accordance with legal judgments
against the Contractor resulting from such suits or claims and payments of
settlements made with the Owner's consent; provided, however, that such costs of
legal defenses, judgment and settlements shall not be included in the
calculation of the Contractor's Fee or of a Guaranteed Maximum Price, if any,
and provided that such royalties, fees and costs are not excluded by the last
sentence of Subparagraph 3.17.1 of the General Conditions or other provisions of
the Contract Documents.

7.1.5.6 Deposits lost for causes other than the Contractor's fault or
negligence.

7.1.6 OTHER COSTS

7.1.6.1 Other costs incurred in the performance of the Work if and to the extent
approved in advance in writing by the Owner.

7.2 EMERGENCIES: REPAIRS TO DAMAGED, DEFECTIVE OR NONCONFORMING WORK

The Cost of the Work shall also include costs described in Paragraph 7.1 which
are incurred by the Contractor:

7.2.1 In taking action to prevent threatened damage, injury or loss in case of
an emergency affecting the safety of persons and property, as provided in
Paragraph 10.3 of the General Conditions.

7.2.2 In repairing or correcting Work damaged or improperly executed by
construction workers in the employ of the Contractor, provided such damage or
improper execution did not result from the fault or negligence of the Contractor
or the Contractor's foremen, engineers or superintendents, or other supervisory,
administrative or managerial personnel of the Contractor.

7.2.3 In repairing damaged Work other than that described in Subparagraph 7.2.2,
provided such damage did not result from the fault or negligence of the
Contractor or the Contractor's personnel, and only to the extent that the cost
of such repairs is not recoverable by the Contractor from others and the
Contractor is not compensated therefor by insurance or otherwise.

7.2.4 In correcting defective or nonconforming Work performed or supplied by a
Subcontractor or material supplier and not corrected by them, provided such
defective or nonconforming Work did not result from the fault or neglect of the
Contractor or the Contractor's personnel adequately to supervise and direct the
Work of the Subcontractor or material supplier, and only to the extent that the
cost of correcting the defective or nonconforming Work is not recoverable by the
Contractor from the Subcontractor or material supplier.

                                    ARTICLE 8

                           COSTS NOT TO BE REIMBURSED

8.1 The Cost of the Work shall not include:

8.1.1 Salaries and other compensation of the Contractor's personnel stationed at
the Contractor's principal office or offices other than the site office, except
as specifically provided in Clauses 7.1.1.2 and 7.1.1.3 or as may be provided in
Article 14.

8.1.2 Expenses of the Contractor's principal office and offices other than the
site office.


<PAGE>

8.1.3 Overhead and general expenses, except as may be expressly included in
Article 7.

8.1.4 The Contractor's capital expenses, including interest on the Contractor's
capital employed for the Work.

8.1.5 Rental costs of machinery and equipment, except as specifically provided
in Clause 7.1.4.2.

8.1.6 Except as provided in Subparagraphs 7.2.2 through 7.2.4 and Paragraph 13.5
of this Agreement, costs due to the fault or negligence of the Contractor,
Subcontractors, anyone directly or indirectly employed by any of them, or for
whose acts any of them may be liable, including but not limited to costs for the
correction of damaged, defective or nonconforming Work, disposal and replacement
of materials and equipment incorrectly ordered or supplied, and making good
damage to property not forming part of the Work.

8.1.7 Any cost not specifically and expressly described in Article 7.

8.1.8 Costs which would cause the Guaranteed Maximum Price, if any, to be
exceeded.

                                    ARTICLE 9

                         DISCOUNTS, REBATES AND REFUNDS

9.1 Cash discounts obtained on payments made by the Contractor shall accrue to
the Owner if (1) before making the payment, the Contractor included them in an
Application for Payment and received payment therefor from the Owner, or (2) the
Owner has deposited funds with the Contractor with which to make payments;
otherwise, cash discounts shall accrue to the Contractor. Trade discounts,
rebates, refunds and amounts received from sales of surplus materials and
equipment shall accrue to the Owner, and the Contractor shall make provisions so
that they can be secured.

9.2 Amounts which accrue to the Owner in accordance with the provisions of
Paragraph 9.1 shall be credited to the Owner as a deduction from the Cost of the
Work and accounted for at the time of final payment.

                                   ARTICLE 10

                        SUBCONTRACTS AND OTHER AGREEMENTS

10.1 Those portions of the Work that the Contractor does not customarily perform
with the Contractor's own personnel shall be performed under subcontracts or by
other appropriate agreements with the Contractor. The Contractor shall obtain
bids from Subcontractors and from suppliers of materials or equipment fabricated
especially for the Work. The Contractor shall not use any subcontractor to whom
the Owner has reasonable objection. The Owner may request specific persons or
entities from whom the Contractor shall solicit bids. The Contractor shall not
be required to contract with anyone to whom the Contractor has reasonable
objection.

10.2 If a Guaranteed Maximum Price has been established and a specific bidder
among those whose bids (1) is recommended to the Owner by the Contractor; (2) is
qualified to perform that portion of the Work; and (3) has submitted a bid which
conforms to the requirements of the Contract Documents without reservations or
exceptions, but the Owner requires that another bid be accepted; then the
Contractor will require that a Change Order be issued to adjust the Guaranteed
Maximum Price by the difference between the bid of the person or entity selected
by the Contractor and the amount of the subcontract or other agreement actually
signed with the person or entity reguested by the Owner prior to the execution
of the work of the subcontractor.


<PAGE>

10.3 NONE


                                   ARTICLE 11

                               ACCOUNTING RECORDS

11.1 The Contractor shall keep full and detailed accounts and exercise such
controls as may he necessary for proper financial management under this
Contract; the accounting and control Systems Shall be in accordance with
generally accepted accounting priciples and construction industry standards. The
Owner and the Owner's accountants shall be afforded access to the Contractor's
records, books, correspondence, instructions, drawings, receipts, subcontracts,
purchase orders, vouchers, memoranda and other data relating to this Contract,
and the Contractor shall preserve these for a period of three years after final
payment, or for such longer period as may be required by law.

                                   ARTICLE 12

                                PROGRESS PAYMENTS

12.1 Based upon Applications for Payment including all supporting documentation
reasonably required by the Owner submitted to the Owner by the Contractor and
Certificates for Payment issued by the Architect, the Owner shall make progress
payments on account of the Contract Sum to the Contractor as provided below and
elsewhere in the Contract Documents.

12.2 The period covered by each Application for Payment shall be one calendar
month ending on the last day of the month, or as follows:

12.3 Provided an Application for Payment is received by the Owner not later than
the last day of a month, the Owner shall make payment to the Contractor not
later than the 21st day of the following month. If an Application for Payment is
received by the Architect after the application date fixed above, payment shall
be made by the Owner not later than twenty-one (21) days after the Owner
receives the Application for Payment.

12.4 With each Application for Payment the Contractor shall provide waivers of
liens as evidence of payment together with a detailed summary of all labor and
materials provided by Contractor by category of work, all invoices and
supporting materials provided to Contractor by subcontractors, and a schedule of
values setting forth the percentage of completion of each line item set forth in
the Construction Budget.


12.5 CONTRACTS WITH A GUARANTEED MAXIMUM PRICE

12.5.1 Each Application for Payment shall he based upon the most recent schedule
of values submitted by the Contractor in accordance with the Contract Documents.
The schedule of values shall allocate the entire Guaranteed Maximum Price among
the various portions of the Work, except that the Contractor's Fee shall he
shown as a single separate item. The schedule of values shall he prepared in
such form and supported by such data to substantiate its accuracy as the Owner
may reasonably require. This schedule, shall be used as a basis for reviewing
the Contractor's Applications for Payment.

<PAGE>


12.5.2 Applications for Payment shall show the percentage completion of each
portion of the Work as of the end of the period covered by the Application for
Payment. The percentage completion shall be the lesser of (1) the percentage of
that portion of the Work which has actually been completed or (2) the percentage
obtained by dividing (a) the expense which has actually been incurred by the
Contractor on account of that portion of the Work for which the Contractor has
made or intends to make actual payment prior to the next Application for Payment
by (b) the share of the Guaranteed Maximum Price allocated to that portion of
the Work in the schedule of values.

12.5.3 Subject to other provisions of the Contract Documents, the amount of each
progress payment shall be computed as follows:

12.5.3.1 Take that portion of the Guaranteed Maximum Price properly allocable to
completed Work as determined by multiplying the percentage completion of each
portion of the Work by the share of the Guaranteed Maximum Price allocated to
that portion of the Work in the schedule of values. Pending final determination
of cost to the Owner of changes in the Work, amounts not in dispute may be
included as provided in Subparagraph 7.3.7 of the General Conditions, even
though the Guaranteed Maximum Price has not yet been adjusted by Change Order.

12.5.3.2 Add that portion of the Guaranteed Maximum Price properly allocable to
materials and equipment delivered and suitably stored at the site for subsequent
incorporation in the Work or, if approved in advance by the Owner, suitably
stored off the site at a location agreed upon in writing.

12.5.3.3 Add the Contractor's Fee, less retainage of ten percent (10%). Upon
satisfactory completion of work having a value equal to 50% of the Guaranteed
Maximum Price, no further retainage shall be deducted from the Contractor's Fee.
The Contractor's Fee shall be computed upon the Cost of the Work described in
the two preceding Clauses at the rate stated in Paragraph 5.1 or, if the
Contractor's Fee is stated as a fixed sum in that Paragraph, shall be an amount
which bears the same ratio to that fixed-sum Fee as the Cost of the Work in the
two preceding Clauses bears to a reasonable estimate of the probable Cost of the
Work upon its completion.

12.5.3.4 Subtract the aggregate of previous payments made by the Owner.

12.5.3.5 Subtract the shortfall, if any, indicated by the Contractor in the
documentation required by Paragraph 12.4 to substantiate prior Applications for
Payment, or resulting from errors subsequently discovered by the Owner's
accountants in such documentation.

12.5.3.6 Subtract amounts, if any, for which the Architect has withheld or
nullified a Certificate for Payment as provided in Paragraph 9.5 of the General
Conditions.

12.5.4 Additional retainage, if any, shall be as follows: Subtract retainage of
ten percent (10%) on General Conditions and other changes for services, labor
and materials provided by Contractor or Contractor's own employees. Upon
satisfactory completion of work having a value equal to 50% of the Guaranteed
Maximum Price, no further retainage shall be deducted from the Contractor's Fee.


(If it is intended to retain additional amounts from progress payments to the
Contractor beyond (1) the retainage from the Contractor's Fee provided in Clause
12.5.3.3, (2) the retainage from Subcontractors provided in Paragraph 12.7
below, and (3) the retainage, if any, provided by other provisions of the
Contract, insert provision for such additional retainage here. Such provision,
if made, should also describe any arrangement for limiting or reducing the
amount retained after the Work reaches a certain state of completion.)

12.6 CONTRACTS WITHOUT A GUARANTEED MAXIMUM PRICE

12.6.1 NONE.


<PAGE>


12.6.2 NONE.

12.6.2.1 NONE.

12.6.2.2 NONE.

12.6.2.3 NONE.

12.6.2.4 NONE.

12.6.2.5 NONE.

12.6.3 NONE.

12.7 Except with the Owner's prior approval, payments to Subcontractors
included in the Contractor's Applications for Payment shall not exceed an amount
for each Subcontractor calculated as follows: (other than materials only vendors
who shall be paid in full).

12.7.1 Take that portion of the Subcontract Sum properly allocable to completed
Work as determined by multiplying the percentage completion of each portion of
the Subcontractor's Work by the share of the total Subcontract Sum allocated to
that portion in the Subcontractor's schedule of values, less retainage of ten
percent (10%). Pending final determination of amounts to be paid to the
Subcontractor for changes in the Work, amounts not in dispute may be included as
provided in Subparagraph 7.3.7 of the General Conditions even though the
Subcontract Sum has not yet been adjusted by Change Order. Upon satisfactory
completion of work having a value equal to 50% of the subcontract sum, no
further retainage shall be deducted for such subcontractor.

12.7.2 Add that portion of the Subcontract Sum properly allocable to materials
and equipment delivered and suitably stored at the site for subsequent
incorporation in the Work or, if approved in advance by the Owner, suitably
stored off the site at a location agreed upon in writing, less retainage of ten
percent (10%). Upon satisfactory completion of work having a value equal to 50%
of the subcontract sum, no further retainage shall be deducted for such
subcontractor.

12.7.3 Subtract the aggregate of previous payments made by the Contractor to the
Subcontractor.

12.7.4 Subtract amounts, if any, for which the Architect has withheld or
nullified a Certificate for Payment by the Owner to the Contractor for reasons
which are the fault of the Subcontractor.



<PAGE>


12.7.5 Add, upon Substantial Completion of the entire Work of the Contractor, a
sum sufficient to increase the total payments to the Subcontractor to one
hundred percent (100%) of the Subcontract Sum, less one hundred twenty-five
percent (125%) of amounts, if any, for incomplete Work and unsettled claims;
and, if final completion of the entire Work is thereafter materially delayed
through no fault of the Subcontractor, add any additional amounts payable on
account of Work of the Subcontractor in accordance with Subparagraph 9.10.3 of
the General Conditions.

(If it is intended, prior to Substantial Completion of the entire Work of the
Contractor, to reduce or limit the retainage from Subcontractors resulting from
the percentages inserted in Subparagraphs 12.7.1 and 12.7.2 above, and this is
not explained elsewhere in the Contract Documents, insert here provisions for
such reduction or limitation.)

If, in the Owner's sole discretion, the work is progressing satisfactorily and
subject to the approval of any Lender of the Owner, retainage held on account of
the Work of those Subcontractors whose work is fully and satisfactorily
completed during the early stages of construction, may be released the Owner to
the Contractor for Payment to those Subcontractors.

The Subcontract Sum is the total amount stipulated in the subcontract to he paid
by the Contractor to the Subcontractor for the Subcontractor's performance of
the subcontract.

12.8 Except with the Owner's prior approval, the Contractor shall not make
advance payments to suppliers for materials or equipment which have not been
delivered and stored at the site.

12.9 NONE.

                                   ARTICLE 13

                                  FINAL PAYMENT

13.1 Final payment shall be made by the Owner to the Contractor when (1) the
Contract has been fully performed by the Contractor except for the Contractor's
responsibility to correct defective or nonconforming Work, as provided in
Subparagraph 12.2.2 of the General Conditions, and to satisfy other
requirements, if any, which necessarily survive final payment; (2) a final
Application for Payment and a final accounting for the Cost of the Work have
been submitted by the Contractor and reviewed by the Owner's accountants; and
(3) a final Certificate for Payment has then been issued by the Architect; such
final payment shall he made by the Owner not more than fifteen (15) days after
the issuance of the Architect's final Certificate for Payment, or as follows:
N/A

13.2 The amount of the final payment shall be calculated as follows:

13.2.1 Take the sum of the Cost of the Work substantiated by the Contractor's
final accounting and the Contractor's Fee; but not more than the Guaranteed
Maximum Price, if any.

13.2.2 Subtract amounts, if any, for which the Architect or Owner withholds, in
whole or in part, a final Certificate for Payment as provided in Subparagraph
9.5.1 of the General Conditions or other provisions of the Contract Documents.



<PAGE>


13.2.3 Subtract the aggregate of previous payments made by the Owner.

If the aggregate of previous payments made by the Owner exceeds the amount due
the Contractor, the Contractor shall reimburse the difference to the Owner.

13.3 The Owner's accountants will review and report in writing on the
Contractor's final accounting within 30 days after delivery of the final
accounting to the Owner by the Contractor. Based upon such Cost of the Work as
the Owner's accountants report to be substantiated by the Contractor's final
accounting, and provided the other conditions of Paragraph 13.1 have been met,
the Architect will, within seven days after receipt of the written report of the
Owner's accountants, either issue to the Owner a final Certificate for Payment
with a copy to the Contractor, or notify the Contractor and Owner in writing of
the Architect's reasons for withholding a certificate as provided in
Subparagraph 9.5.1 of the General Conditions. The time periods stated in this
Paragraph 13.3 supersede those stated in Subparagraph 9.4.1 of the General
Conditions.

13.4 If the Owner's accountants report the Cost of the Work as substantiated by
the Contractor's final accounting to be less than claimed by the Contractor, the
Contractor shall be entitled to demand arbitration of the disputed amount
without a further decision of the Architect. Such demand for arbitration shall
be made by the Contractor within 30 days after the Contractor's receipt of a
copy of the Architect's final Certificate for Payment; failure to demand
arbitration within this 30-day period shall result in the substantiated amount
reported by the Owner's accountants becoming binding on the Contractor. Pending
a final resolution by arbitration, the Owner shall pay the Contractor all
amounts owing Contractor which are not in dispute.

13.5 if subsequent to final payment and at the Owner's request, the Contractor
incurs costs described in Article 7 and not excluded by Article 8 to correct
defective or nonconforming Work, the Owner shall reimburse the Contractor such
costs and the Contractor's Fee applicable thereto on the same basis as if such
costs had been incurred prior to final payment, but not in excess of the
Guaranteed Maximum Price, if any. If the Contractor has participated in savings
as provided in Paragraph 5.2, the amount of such savings shall be recalculated
and appropriate credit given to the Owner in determining the net amount to be
paid by the Owner to the Contractor.

                                   ARTICLE 14

                            MISCELLANEOUS PROVISIONS

14.1 Where reference is made in this Agreement to a provision of the General
Conditions or another Contract Document, the reference refers to that provision
as amended or supplemented by other provisions of the Contract Documents.

14.2 Payments due and unpaid under the Contract shall bear interest from the
date payment is due at the rate stated below, or in the absence thereof, at the
legal rate prevailing from time to time at the place where the Project is
located.

(Insert rate of interest agreed upon, if any)

The rate of interest from time to time announced by USTrust as its prime
lending rate plus two percent (2%).

(Usury laws and requirements under the Federal Truth in Lending Act, similar
state and local consumer credit laws and other regulations at the Owner's and
Contractor's principal places of business, the location of the Project and
elsewhere may affect the validity of this provision. Legal advice should be
obtained with respect to deletions or modifications, and also regarding
requirements such as written disclosures or waivers.)



<PAGE>


14.3 Other provisions:

Home office support: such as, purchasing, planning, project management,
secretarial and accounting activities associated with day to day activities of
the Work solely with respect to the pro rata portion of the cost of these
activities related to the Work, shall be included as a reimbursable expense, at
the rates set forth on Schedule 1 attached hereto.

14.4 Contractor acknowledges that Owner has entered into various contracts to
provide directly or indirectly, to the United States Government, certain goods
and services relating to the national defense which contracts constitute DX-E1
Rated Orders, certified for national defense use under the Defense Priorities
and Allocations System. Contractor agrees to comply with the requirements of the
Defense Priorities and Allocations System regulations (15 CFR Part 700) to the
extent such requirements are applicable to Owner. In addition, Contractor shall
require each of its Subcontractors to acknowledge, in writing, in its
Subcontract, that such subcontractor will comply with the requirements of the
Defense Priorities and Allocations System Regulations (15 CFR Part 700), to the
extent such requirements are applicable to Owner.

                                   ARTICLE 15

                            TERMINATION OR SUSPENSION

15.1 The Contract may be terminated by the Contractor as provided in Article 14
of the General Conditions; however, the amount to be paid to the Contractor
under Subparagraph 14.1.2 of the General Conditions shall not exceed the amount
the Contractor would be entitled to receive under Paragraph 15.3 below, except
that the Contractor's Fee shall be calculated as if the Work had been fully
completed by the Contractor, including a reasonable estimate of the Cost of the
Work for Work not actually completed.

15.2 If a Guaranteed Maximum Price is established in Article 5, the Contract may
be terminated by the Owner for cause as provided in Article 14 of the General
Conditions; however, the amount, if any, to be paid to the Contractor under
Subparagraph 14.2.4 of the General Conditions shall not cause the Guaranteed
Maximum Price to be exceeded, nor shall it exceed the amount the Contractor
would be entitled to receive under Paragraph 15.3 below.

15.3 If no Guaranteed Maximum Price is established in Article 5, the Contract
may be terminated by the Owner for cause as provided in Article 14 of the
General Conditions; however, the Owner shall then pay the Contractor an amount
calculated as follows:

15.3.1 Take the Cost of the Work incurred by the Contractor to the date of
termination including reasonable/direct out-of-pocket costs for expenses
directly related to the termination and related fees for demobilization.

15.3.2 Add the Contractor's Fee computed upon the Cost of the Work to the date
of termination at the rate stated in Paragraph 5.1 or, if the Contractor's Fee
is stated as a fixed sum in that Paragraph, an amount which bears the same ratio
to that fixed-sum Fee as the Cost of the Work at the time of termination bears
to a reasonable estimate of the probable Cost of the Work upon its completion.

15.3.3 Subtract the aggregate of previous payments made by the Owner. The Owner
shall also pay the Contractor fair compensation, either by purchase or rental
at the election of the Owner, for any equipment owned by the Contractor which
the Owner elects to retain and which is not otherwise included in the Cost of
the Work under Subparagraph 15.3.1. To the extent that the Owner elects to take
legal assignment of subcontracts and purchase orders (including rental
agreements), the Contractor shall, as a condition of receiving the payments
referred to in this Article 15, execute and deliver all such papers and take all
such steps, including the legal assignment of such subcontracts and other
contractual rights of the Contractor, as the Owner may require for the purpose
of fully vesting in the Owner the rights and benefits of the Contractor under
such subcontracts or purchase orders.

<PAGE>


15.4 The Work may be suspended by the Owner as provided in Article 14 of the
General Conditions; in such case, the Guaranteed Maximum Price, if any, shall be
increased as provided in Subparagraph 14.3.2 of the General Conditions except
that the term "cost of performance of the Contract" in that Subparagraph shall
be understood to mean the Cost of the Work and the term "profit" shall be
understood to mean the Contractor's Fee as described in Paragraphs 5.1 and 6.3
of this Agreement.

Insert A: 15.5. In addition to Owner's right to remove Builder from any part of
Work pursuant to the Contract Documents. Owner may, at any time, at will and
without cause, terminate any part of Work or any subcontract or all remaining
Work for any reason whatsoever by giving seven (7) days' prior written notice to
Builder specifying the part of Work or subcontract to be terminated and the
effective date of termination. Builder shall continue to prosecute the part of
Work not terminated. If any part of the Work or subcontract is so terminated.
Builder shall be entitled to payment for any and all Work properly executed in
accordance with the Contract Documents relating to such part of the Work which
has been cancelled (the basis for such payment shall be as provided in the
Contract) and for costs directly related to Work thereafter performed by Builder
in terminating such Work or subcontract including reasonable demobilization and
cancellation charges provided said Work is authorized in advance by Architect
and Owner. No payment shall be made by Owner, however, to the extent that such
Work or subcontract is, was or could have been terminated under the Contract
Documents or an equitable adjustment is made or denied under another provision
of the Contract. In case of such termination, Owner will issue a Construction
Change Directive or authorize a Change Order making any required adjustment to
the Date of Substantial Completion and/or Guaranteed Maximum Price. For the
remainder of the Work, the Contract Documents shall remain in full force and
effect.

Insert B: 15.6 The Owner will pay for Work executed and for proven loss with
respect to materials, equipment, tools, and construction equipment and
machinery, including reasonable overhead and profit.

                                   ARTICLE 16

                        ENUMERATION OF CONTRACT DOCUMENTS

16.1 The Contract Documents, except for Modifications issued after execution of
this Agreement, are enumerated as follows:

16.1.1 The Agreement is this executed Standard Form of Agreement Between Owner
and Contractor, AIA Document A111, 1987 Edition.

16.1.2 The General Conditions are the General Conditions of the Contract for
Construction, AIA Document A20l, 1987 Edition.

16.1.3 NONE.

Document                                   Title                         Pages
- --------                                   -----                         -----

16.1.4 The Specifications are as follows:

(Either list the Specifications here or refer to an exhibit attached to this
Agreement.)

Section                                    Title                         Pages
- -------                                    -----                         -----

See Exhibit "A", Section 5, attached hereto and incorporated by reference
herein.

16.1.5 The Drawings are dated as set forth in Exhibit "A", Section 5, attached
hereto and incorporated by reference herein:

(Either list the Drawings here or refer to an exhibit attached to this
Agreement.)

Number                                     Title                         Date
- ------                                     -----                         ----

See Exhibit "A". Section 5. attached hereto and incorporated by reference
herein.

16.1.6 The Addenda, if any, are as follows:

Number                                     Date                          Pages
- ------                                     ----                          -----

Portions of Addenda relating to bidding requirements are not part of the
Contract Documents unless the bidding requirements are also enumerated in this
Article 16.



<PAGE>


16.1.7 Other Documents, if any, forming part of the Contract Documents are as
follows:

(List here any additional documents which are intended to form part of the
Contract Documents. The General Conditions provide that bidding requirements
such as advertisement or invitation to bid, Instructions to Bidders, sample
forms and the Contractor's bid are not part of the Contract Documents unless
enumerated in this Agreement. They should be listed here only if intended to be
part of the Contract Documents.)

Exhibit A   Project Summary dated January 6, 1997

Exhibit B   Contractor's Certificate of Insurance

Exhibit C1  AIA Document G702 (Application and Certificate for Payment)

Exhibit C2  AIA Document G703 (Continuation Sheet)

Exhibit D1  General Contractor's Final Waiver of Liens & Indemnity Agreement 

Exhibit D2  General Contractor's Partial Waiver of Liens & Indemnity Agreement

Exhibit D3  Subcontractor's Partial Waiver of Liens & Indemnity Agreement
              (Office)

Exhibit D4  Subcontractor's Final Waiver of Liens & Indemnity Agreement 
              (Office)

Exhibit D5  Subcontractor's Partial Waiver of Liens & Indemnity Agreement
              (N.I.F.)

Exhibit D6  Subcontractor's Final Waiver of Liens & Indemnity Agreement 
              (N.I.F.)

Exhibit E1  List of Specifications (Office)

Exhibit E2  List of Specifications (N.I.F.)

Exhibit F1  List of Drawings (Office)  

Exhibit F2  List of Drawings (N.I.F.)

This Agreement is entered into as of the day and year first written above and is
executed in at least three original copies of which one is to he delivered to
the Contractor, one to the Architect for use in the administration of the
Contract, and the remainder to the Owner.


OWNER                                       CONTRACTOR


/s/ GARY K. WILLIS                          /s/ RICHARD M. KUCHINSKY, AIA
- ------------------------------------        ------------------------------------
(Signature)                                 (Signature)

ZYGO CORPORATION,                           DACON CORPORATION, 
Gary K. Willis,                             Richard M. Kuchinsky, AIA
President and Chief Executive Officer       Chief Executive Officer
(Printed name and title)                    (Printed name and title)



                             EMPLOYMENT AGREEMENT


      AGREEMENT, made as of August 19, 1997, between SIGHT SYSTEMS, INC., a
California corporation with an office at 3541 Old Conejo Road, Suite 119,
Newbury Park, California 91320-2158 (the "Company" or "SSI"), and DAVID GRANT,
residing at 3032 Camino Del Zuro, Thousand Oaks, California 91360 ("Employee").


                             W I T N E S S E T H:

      WHEREAS, SSI is engaged in the business of designing and manufacturing
high accuracy production vision systems performing numerous alignment and
measurement applications; and

      WHEREAS, the Company, Employee and certain other specified entities and
individuals have entered into an Acquisition Agreement (the "Acquisition
Agreement"), dated as of August 19, 1997, with Zygo Corporation ("Zygo"),
pursuant to which Zygo is acquiring all the outstanding capital stock of the
Company for an aggregate of 287,400 shares of Zygo common stock (the
"Acquisition"); and

      WHEREAS, prior to the consummation of the Acquisition Agreement, the
Shareholder was an employee and a principal shareholder of SSI and, as such,
possesses confidential and proprietary information regarding SSI; and

      WHEREAS, as a principal stockholder of the Company, Employee will receive
a significant number of shares of Zygo common stock upon the consummation of the
Acquisition; and

      WHEREAS, the execution and delivery of this Agreement, including without
limitation the provisions of Section 9 hereof, is a condition of Zygo's
consummation of the Acquisition and of Employee's agreement to sell his shares
of common stock of SSI to Zygo, all pursuant to the Acquisition Agreement; and

      WHEREAS, the Company desires that Employee be employed by the Company, and
Employee desires to be so employed by the Company upon the terms and conditions
herein set forth.

      NOW, THEREFORE, in consideration of the premises and of the mutual
promises, representations and covenants herein contained, the parties hereto
agree as follows:



<PAGE>



      1.    EMPLOYMENT.

      The Company hereby employs Employee and Employee hereby accepts such
employment, subject to the terms and conditions herein set forth. Employee shall
hold the position of President of SSI, a business unit initially being operated
in the form of a subsidiary of Zygo Corporation ("Zygo"). Employee will not be
required to relocate outside of a 25 mile radius from his current place of
employment in order to satisfy the terms and conditions of employment herein set
forth.

      2.    TERM.

      The initial term of employment under this Agreement shall begin on August
19, 1997 (the "Employment Date") and shall continue for a period of three (3)
years from that date, subject to prior termination in accordance with the terms
hereof. Thereafter, this Agreement shall automatically be renewed for successive
one year terms unless either party shall give the other sixty (60) days' prior
written notice of its or his intent not to renew this Agreement. The initial
term together with all such additional one-year period(s) of employment, if any,
are collectively referred to herein as the "term" of this Agreement.

      3.    COMPENSATION.

      As compensation for the employment services to be rendered by Employee
hereunder, the Company agrees to pay, or cause to be paid, to Employee, and
Employee agrees to accept, an annual salary of $120,000 or such higher amount as
the President of Zygo may determine from time to time, subject to such payroll
deductions as are required by law and deductions for applicable employee
contributions to the normal benefit programs of the Company. The annual salary
provided for hereunder shall be payable in equal installments commencing at the
Employment Date, in accordance with the Company's practice. In addition,
Employee shall be entitled to additional incentive compensation from time to
time. Such compensation will be based on the Company's overall performance and
will be awarded at the discretion of the President of Zygo with the approval of
the Board of Directors of the Company or Zygo.

      On August 19, 1997, Employee shall receive a grant of options to purchase
10,000 shares of Common Stock of Zygo with an exercise price equal to the fair
market value on the date of grant, vesting in four equal annual installments and
otherwise in accordance with the terms of Zygo's Amended and Restated
Non-Qualified Stock Option Plan.

      4.    EXPENSES.

      The Company shall pay or reimburse Employee, upon presentment of suitable
vouchers, for all reasonable business and travel expenses which may be incurred
or paid by Employee in connection with his employment hereunder. Employee shall
comply 

                                       -2-
<PAGE>

with restrictions and shall keep records in compliance with the Company's
policy and procedure related to travel and entertainment expenses.

      5.    INSURANCE AND OTHER BENEFITS.

            (a) Employee shall be entitled to such vacations and to participate
in and receive any other health and welfare (including insurance) benefits
customarily provided by the Company for its employees generally, all as
determined from time to time by the Board of Directors of the Company or Zygo or
appropriate committee thereof; provided that the health and welfare benefits in
the aggregate, provided to Employee, are at least substantially comparable to
the benefits provided by the Company to Employee prior to the date hereof, all
of which benefits Employee represents are set forth in Schedule 5(a) attached
hereto. The Company currently intends to initially afford Employee the same
health and welfare benefits as are set forth in said Schedule 5(a); i.e., those
benefits provided by the Company to Employee prior to the date hereof. Unused
annual vacations may be carried over to the extent permitted by Company policy.

            (b) Employee acknowledges and agrees that notwithstanding anything
to the contrary contained in any health or welfare benefit plan maintained by
Zygo, except as may be otherwise agreed to by Employee and Zygo, Employee shall
not be entitled to participate in any of Zygo's employee benefit plans by virtue
of his being employed by the Company or by Zygo (if and when applicable).

      6.    DUTIES.

            (a) Employee shall perform such duties and functions as the
President, Chief Executive Officer or Chief Operating Officer of Zygo and the
Board of Directors of the Company or Zygo shall from time to time determine and
Employee shall comply in the performance of his duties with the policies of, and
be subject to, the direction of such officers and such Boards of Directors.

            (b) Employee agrees to devote his entire working time, attention and
energies to the performance of the business of the Company and of any of its
subsidiaries or affiliates by which he may be employed; and Employee shall not,
directly or indirectly, alone or as a member of any partnership or other
organization, or as an officer, director or employee of any other corporation,
partnership or other organization, be actively engaged in or concerned with any
other duties or pursuits which interfere with the performance of his duties
hereunder, or which, even if non-interfering, may be inimical, or contrary, to
the best interests of the Company, except those duties or pursuits specifically
authorized by the Board of Directors of the Company or Zygo.

                                       -3-
<PAGE>

      7.    TERMINATION OF EMPLOYMENT; EFFECT OF TERMINATION.

            (a) Employee's employment hereunder may be terminated at any time
upon written notice from the Company to Employee,

                  (i) upon the determination by the President, Chief Executive
            Officer or Chief Operating Officer of Zygo or the Board of Directors
            of the Company or Zygo that Employee's performance of his duties has
            not been fully satisfactory for any reason which would not
            constitute justifiable cause (as hereinafter defined) upon five (5)
            days' prior written notice to Employee; or

                  (ii) immediately upon determination by the Board of Directors
            of the Company or Zygo that justifiable cause exists for such
            termination.

            (b) Employee's employment shall terminate upon:

                  (i)   the death of the Employee; or

                  (ii) the "disability" of Employee (as hereinafter defined
            pursuant to subsection (d) herein).

            (c) For the purposes of this Agreement, the term "disability" shall
mean the inability of Employee, due to illness, accident or any other physical
or mental incapacity, to perform his duties in a normal manner for a period of
three (3) consecutive months or for a total of four (4) months (whether or not
consecutive) in any twelve (12) month period during the term of this Agreement.

            (d) For the purposes hereof, the term "justifiable cause" shall mean
and be limited to: any repeated failure or refusal by Employee to perform, or
willful neglect by Employee of, any of his duties pursuant to this Agreement;
Employee's conviction (which, through lapse of time or otherwise, is not subject
to appeal) of any crime or offense involving money or other property of the
Company, Zygo or any of their respective subsidiaries or affiliates or which
constitutes a felony in the jurisdiction involved; Employee's performance of any
act or his failure to act, for which if he were prosecuted and convicted, a
crime or offense involving money or property of the Company, Zygo or any of
their respective subsidiaries or affiliates, or which constitutes a felony in
the jurisdiction involved, would have occurred; any disclosure by Employee to
any person, firm or corporation other than the Company, Zygo, any of their
respective subsidiaries or affiliates and its and their directors, officers and
employees, of any confidential information or trade secret of the Company, Zygo
or any of their respective subsidiaries or affiliates or any other breach by
Employee of any of the provisions of Section 9, 10 or 11 hereof; any attempt by
Employee to secure any personal profit in connection with the business of the
Company, Zygo or any of their respective subsidiaries or affiliates; or the
engaging by Employee in any business or activities other than the business of
the Company, Zygo and their respective 

                                       -4-
<PAGE>

subsidiaries or affiliates which interferes with the performance of his
duties hereunder. Upon termination of Employee's employment by the Company
for justifiable cause, this Agreement shall terminate immediately and
Employee shall not be entitled to any amounts or benefits hereunder other
than such portion of Employee's annual salary and reimbursement of expenses
pursuant to Section 4 hereof as has been accrued through the date of his
termination of employment.

            (e) If Employee shall die during the term of his employment
hereunder, this Agreement shall terminate immediately. In such event, the estate
of Employee shall thereupon be entitled to receive such portion of Employee's
annual salary and reimbursement of expenses pursuant to Section 4 hereof as has
been accrued through the date of his death.

            (f) Upon Employee's "disability," the Company shall have the right
to terminate Employee's employment. Notwithstanding any inability to perform his
duties, Employee shall be entitled to receive his compensation as provided
herein until the termination of his employment for disability. Any termination
pursuant to this subsection (f) shall be effective on the date thirty (30) days
after which Employee shall have received written notice of the Company's
election to terminate. Notwithstanding anything to the contrary contained
herein, during any period that Employee fails to perform his duties hereunder as
a result of his disability (but prior to receiving the notice of termination
specified in this Section 7(f), (i) Employee shall continue to receive his full
salary at the rate then in effect and all benefits provided in Section 5 hereof,
provided that payments made to Employee pursuant to this Section 7(f) shall be
reduced by the sum of the amounts, if any, payable to Employee at or prior to
the time of any such payment under any disability benefit plan or program of, or
provided by, the Company or Zygo, and (ii) the Company shall have the right to
hire any other individual or individuals to perform such duties and functions as
the Company shall desire, including those duties heretofore performed by
Employee.

            (g) Notwithstanding any provision to the contrary contained herein,
in the event that Employee's employment is terminated by the Company at any time
for any reason other than justifiable cause, disability or death, the parties
hereto agree that damages to Employee shall be difficult to ascertain in any
such event, but in order to limit the liability of the Company and Zygo in any
such event, Employee shall be entitled to receive as liquidated damages and not
as a penalty, and the Company shall pay to Employee, Employee's salary (payable
in such amount and in such manner as set forth in Section 3 herein) from and
after the date of such termination for a period ending six (6) months after the
date of termination which amount shall be in lieu of any and all other payments
due and owing to Employee under the terms of this Agreement or otherwise.

      8.    REPRESENTATIONS AND AGREEMENTS OF EMPLOYEE.

            (a) Employee represents and warrants that he is free to enter into
this Agreement and to perform the duties required hereunder, and that there are
no 



                                      -5-
<PAGE>

employment contracts or understandings, restrictive covenants or other
restrictions, whether written or oral, preventing the performance of his duties
hereunder, except for the existing employment agreement between Employee and the
Company, which existing agreement is superseded in its entirety by this
Agreement. Employee further represents and warrants that he is in full
compliance with all existing agreements between himself and the Company or Zygo.

            (b) Employee agrees to submit to a medical examination and to
cooperate and supply such other information and documents as may be required by
any insurance company in connection with the Employees' inclusion in any
insurance or fringe benefit plan or program as the Company shall determine from
time to time to obtain, or in connection with, in the Company's sole discretion,
the Company's or Zygo's obtaining life insurance for its benefit on the life of
Employee.

      9. NON-COMPETITION.

            (a) Employee agrees that during his employment by the Company (which
shall be deemed to include the period in which Employee is receiving any
severance payments set forth in Section 7(g) hereto) and for a period of three
(3) years after the later to occur of the termination or expiration of
Employee's employment with the Company (or Zygo as the case may be) (the
"Non-Competitive Period"), Employee shall not, directly or indirectly, as owner,
partner, joint venturer, stockholder, employee, broker, agent, principal,
trustee, corporate officer, director, licensor, or in any capacity whatsoever
engage in, become financially interested in, be employed by, render any
consultation or business advice with respect to, or have any connection with,
any business engaged in the research, development, testing, design, manufacture,
sale, lease, marketing, utilization or exploitation of any products or services
which are designed for the same purpose as, are similar to, or are otherwise
competitive with, products or services of the Company, Zygo or any of their
respective subsidiaries or affiliates which are being sold or provided or
proposed to be provided at the time of termination or expiration of Employee's
employment, in any geographic area where, at the time of the termination or
expiration of his employment hereunder, the business of the Company, Zygo or any
of their respective subsidiaries or affiliates was being conducted or was
proposed to be conducted in any manner whatsoever; provided, however, that
Employee may own any securities of any corporation which is engaged in such
business and is publicly owned and traded but in an amount not to exceed at any
one time one percent (1%) of any class of stock or securities of such
corporation. In addition, Employee shall not, directly or indirectly, during the
Non-Competitive Period, request or cause contracting parties, suppliers or
customers with whom the Company, Zygo or any of their respective subsidiaries or
affiliates has a business relationship to cancel or terminate any such business
relationship with the Company, Zygo or any of their respective subsidiaries or
affiliates or solicit, interfere with or entice from the Company, Zygo or any of
their respective subsidiaries or affiliates any employee (or former employee) of
the Company, Zygo or any of their respective subsidiaries or affiliates. In
addition, the Company and Employee hereby agree, acknowledging such agreement to
be in their respective best interests, that, at the option of the Company,
Employee shall 



                                      -6-
<PAGE>

enter into a consulting agreement following the termination or expiration of his
employment with the Company (or Zygo, as the case may be), pursuant to which
Employee will devote an equivalent of 33% of his full-time employment hours, at
a time and place to be mutually agreed upon by Employee and the Company, to
performing consulting services for the Company for a period of up to three (3)
years, in consideration for which the Company will pay to Employee 33% of
Employee's salary (at the rate then in effect); provided, however, that the
foregoing requirement to provide consulting services shall in no way interfere
with Employee's ability to accept and perform any employment or services, on a
full- or part-time basis, which are not competitive with the business of the
Company, Zygo or any of their respective subsidiaries or affiliates as set forth
in the first sentence of this Section 9(a). Notwithstanding the foregoing, in
the event Employee's employment hereunder is terminated by the Company for
justifiable cause pursuant to Section 7(a), the Non-Competitive Period shall
continue through the expiration of the scheduled term of this Agreement as
provided in Section 2 hereof and for a period of two (2) years thereafter.

            (b) If any portion of the restrictions set forth in this Section 9
should, for any reason whatsoever, be declared invalid by a court of competent
jurisdiction, the validity or enforceability of the remainder of such
restrictions shall not thereby be adversely affected.

            (c) Employee acknowledges that the Company and/or Zygo conducts
business on a world-wide basis, that its sales and marketing prospects are for
continued expansion into world markets and that, therefore, the territorial and
time limitations set forth in this Section 9 are reasonable and properly
required for the adequate protection of the business of the Company, Zygo and
their respective subsidiaries. In the event any such territorial or time
limitation is deemed to be unreasonable by a court of competent jurisdiction,
Employee agrees to the reduction of the territorial or time limitation to the
area or period which such court deems reasonable.

            (d) The existence of any claim or cause of action by Employee
against the Company, Zygo or any of their respective subsidiaries or affiliates
shall not constitute a defense to the enforcement by the Company, Zygo or any
such subsidiary or affiliate of the foregoing restrictive covenants, but such
claim or cause of action shall be litigated separately.

      10.   INVENTIONS AND DISCOVERIES.

            (a) Employee shall promptly and fully disclose to Zygo, and with all
necessary detail for a complete understanding of the same, all developments,
know-how, discoveries, inventions, improvements, concepts, ideas, writings,
formulae, processes and methods (whether copyrightable, patentable or otherwise)
made, received, conceived, acquired or written during working hours, or
otherwise, by Employee (whether or not at the request or upon the suggestion of
Zygo) during the period of his employment with the Company, Zygo or any of their
respective subsidiaries or affiliates, solely or jointly with others, in all
instances in or relating to any activities of the Company, Zygo 



                                      -7-
<PAGE>

or their respective subsidiaries or affiliates known to him as a consequence of
his employment hereunder (collectively the "Subject Matter").

            (b) Employee hereby assigns and transfers, and agrees to assign and
transfer, to Zygo, all his rights, title and interest in and to the Subject
Matter, and Employee further agrees to deliver to Zygo any and all drawings,
notes, specifications and data relating to the Subject Matter, and to execute,
acknowledge and deliver all such further papers, including applications for
copyrights or patents, as may be necessary to obtain copyrights and patents for
any thereof in any and all countries and to vest title thereto to Zygo. Employee
shall assist Zygo in obtaining such copyrights or patents during the term of
this Agreement, and any time thereafter on reasonable notice, and Employee
agrees to testify in any prosecution or litigation involving any of the Subject
Matter (provided that if such testimony occurs after termination of this
Agreement, Employee shall be reasonably compensated for his time and reimbursed
for any out-of-pocket expense).

      11.   NON-DISCLOSURE OF CONFIDENTIAL INFORMATION.

            (a) Employee shall not, during the term of this Agreement or at any
time following termination or expiration of this Agreement, directly or
indirectly, disclose or permit to be known (other than as is required in the
regular course of his duties or required by law (in which case Employee shall
give Zygo prior written notice of such required disclosure) or with the prior
written consent of the President of Zygo), to any person, firm or corporation,
any confidential information acquired by Employee during the course of, or as an
incident to, his employment hereunder, relating to the Company, Zygo or any of
their respective subsidiaries or affiliates, the directors of the Company, Zygo
or any of their respective subsidiaries or affiliates, any client of the
Company, Zygo or any of their respective subsidiaries or affiliates, or any
corporation, partnership or other entity owned or controlled, directly or
indirectly, by any of the foregoing, or in which any of the foregoing has a
beneficial interest, including, but not limited to, the business affairs of each
of the foregoing. Such confidential information shall include, but shall not be
limited to, proprietary technology, trade secrets, patented processes, research
and development data, know-how, market studies and forecasts, competitive
analyses, pricing policies, employee lists, personnel policies, the substance of
agreements with customers, suppliers and others, marketing or dealership
arrangements, servicing and training programs and arrangements, customer lists
and any other documents embodying such confidential information. This
confidentiality obligation shall not apply to any confidential information which
thereafter becomes publicly available other than pursuant to a breach of this
Section 11(a), directly or indirectly, by Employee.

            (b) All information and documents relating to the Company, Zygo and
their respective subsidiaries or affiliates as hereinabove described (or other
business affairs) shall be the exclusive property of the Company or Zygo, as the
case may be, and Employee shall use commercially reasonable best efforts to
prevent any publication or disclosure thereof. Upon termination of Employee's
employment with the Company, 



                                      -8-
<PAGE>

all documents, records, reports, writings and other similar documents containing
confidential information, including copies thereof, then in Employee's
possession or control shall be returned and left with the Company.

            (c) Employee will execute the form of "Sight Systems, Inc.
Non-Disclosure and Non-Solicitation Agreement" in the form of Exhibit A hereto,
all the terms and provisions of which are incorporated herein as if fully set
forth herein.

      12.   RIGHT TO INJUNCTION.

      Employee recognizes that the services to be rendered by him hereunder are
of a special, unique, unusual, extraordinary and intellectual character
involving skill of the highest order and giving them peculiar value the loss of
which cannot be adequately compensated for in damages. In the event of a breach
of this Agreement by Employee, the Company shall be entitled to injunctive
relief or any other legal or equitable remedies. Employee agrees that the
Company may recover by appropriate action the amount of the actual damage caused
the Company by any failure, refusal or neglect of Employee to perform his
agreements, representations and warranties herein contained. The remedies
provided in this Agreement shall be deemed cumulative and the exercise of one
shall not preclude the exercise of any other remedy at law or in equity for the
same event or any other event.

      13.   AMENDMENT OR ALTERATION.

      No amendment or alteration of the terms of this Agreement shall be valid
unless made in writing and signed by both of the parties hereto.

      14.   GOVERNING LAW.

      This Agreement shall be governed by the laws of the State of California,
applicable to agreements made and to be performed therein.

      15.   CONSENT TO JURISDICTION.

            Each party hereto hereby irrevocably submits to the exclusive
jurisdiction of the courts of the State of Connecticut, including the
jurisdiction of the United States District Courts therein, and agrees not to
assert by way of motion, as a defense or otherwise, in any such suit, action or
proceeding, any claim that he or it is not subject to the jurisdiction of the
above-named courts, that the suit, action or proceeding is brought in an
inconvenient forum, that the venue of the suit, action or proceeding is improper
or that this Agreement may not be enforced in or by such courts. Employee agrees
that all actions and proceedings to be instituted hereunder by Employee or his
successors or assigns arising out of or related to this Agreement or the
transactions contemplated hereby shall be commenced only in the courts having a
situs in Connecticut.


                                      -9-
<PAGE>

      16.   SEVERABILITY.

      The holding of any provision of this Agreement to be invalid or
unenforceable by a court of competent jurisdiction shall not affect any other
provision of this Agreement, which shall remain in full force and effect.

      17.   NOTICES.

      Any notices required or permitted to be given hereunder shall be
sufficient if in writing, and if delivered by hand, or sent by certified mail,
return receipt requested, to the addresses set forth above or such other address
as either party may from time to time designate in writing to the other, and
shall be deemed given as of the date of the delivery or mailing.

      18.   WAIVER OR BREACH.

      It is agreed that a waiver by either party of a breach of any provision of
this Agreement shall not operate, or be construed, as a waiver of any subsequent
breach by that same party.

      19.   ENTIRE AGREEMENT AND BINDING EFFECT.

      This Agreement, together with the Acquisition Agreement and all agreements
and exhibits referred to herein and therein, contains the entire agreement of
the parties with respect to the subject matter hereof and shall be binding upon
and inure to the benefit of the parties hereto and their respective legal
representatives, heirs, distributors, successors and assigns. Notwithstanding
the foregoing, all prior agreements between Employee and the Company relating to
the confidentiality of information, trade secrets and patents shall not be
affected by this Agreement.

      20.   SURVIVAL.

      The termination of Employee's employment hereunder shall not affect the
enforceability of Sections 7, 8(a), 9, 10, 11, 12, 14 and 15 hereof.

      21. NON-ASSIGNABILITY.

      This Agreement is entered into in consideration of the personal qualities
of Employee and may not be, nor may any right or interest hereunder be, assigned
by him without the prior written consent of the Company. It is expressly
understood and agreed that this Agreement, and the rights accruing and
obligations owed to the Company hereunder, and the obligations to be performed
by the Company hereunder, may be assigned by the Company at any time without the
consent of Employee to Zygo or any of the Company's successors or assigns. In
the event that this Agreement is assigned by the Company to Zygo pursuant to
this Section 21, all references in this 



                                      -10-
<PAGE>

Agreement to "Company" shall refer to Zygo except that the references thereto
contained in Section 5(a) hereof shall refer to SSI, a business unit of Zygo.

      22.   COUNTERPARTS.

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


      23.   FURTHER ASSURANCES.

      The parties agree to execute and deliver all such further documents,
agreements and instruments and take such other and further action as may be
necessary or appropriate to carry out the purposes and intent of this Agreement.

      24.   HEADINGS.

      The Section headings appearing in this Agreement are for the purposes of
easy reference and shall not be considered a part of this Agreement or in any
way modify, demand or affect its provisions.




                                      -11-
<PAGE>



      IN WITNESS WHEREOF, the parties hereto have executed this Agreement as of
the date first above written.

                                          SIGHT SYSTEMS, INC.


                                          By: /s/ GARY K. WILLIS   
                                          ------------------------------------
                                             Name:  Gary K. Willis   
                                             Title: Chairman of Board
                                              

                                          /s/ DAVID GRANT
                                          ------------------------------------
                                          David Grant


                                          AGREED TO:


                                          ZYGO CORPORATION


                                          By: /s/ GARY K. WILLIS
                                          ------------------------------------
                                             Name:  Gary K. Willis
                                             Title: President
                                                  


                                      -12-
<PAGE>



                                   EXHIBIT A


                              SIGHT SYSTEMS, INC.
                 NON-DISCLOSURE AND NON-SOLICITATION AGREEMENT


         AGREEMENT, dated as of August 19, 1997, by and between SIGHT
SYSTEMS, INC., a California corporation (the "Company"), and David Grant (the
"Employee")


                             W I T N E S S E T H:

      In consideration of the Company's employment of the Employee and in
consideration of the covenants contained herein, the parties hereby agree as
follows:

1.    The Employee agrees that he will not directly or indirectly disclose or
      use at any time any knowledge, information or material relating to any,
      business, customer, machine, design, apparatus or system of the Company,
      Zygo Corporation, a Delaware corporation and the owner of all the
      outstanding capital stock of the Company ("Zygo"), or any of their
      respective subsidiaries or affiliates, or any of the methods of conducting
      any part of their respective business or the like which may become known
      to the Employee by reason of his employment or otherwise except as may be
      reasonably necessary to the performance of his assigned duties as an
      employee of the Company.

2.    The Employee agrees to promptly and completely disclose in writing to such
      person as the Company may designate all ideas, developments, inventions
      and improvements heretofore or hereafter made, developed, perfected,
      devised, conceived or acquired by the Employee either solely or jointly
      with others during the Employee's employment by the Company and within
      ninety (90) days after any termination thereof, whether or not during
      regular working hours, relating in any way to the actual or anticipated
      business, research, developments or products of the Company; and if so
      requested by the Company, to assign, transfer and convey to the Company
      all right, title and interest in and to all such ideas, developments,
      inventions and improvements.

3.    The Employee agrees, at the request and expense of the Company, to make,
      execute and deliver any and all papers, documents and instruments,
      including applications for patents in any and all countries and reissues
      and extensions thereof, and to assist and cooperate (without expense to
      the Employee) with the Company or its representative in any controversy or
      legal proceedings relating to said ideas, developments, inventions and
      improvements, and the patents which may be procured thereon.


<PAGE>

4.    The Company does not assume any responsibility for the prosecution or
      defense of any application for patents in any countries arising from
      ideas, developments, inventions and improvements disclosed to the Company
      pursuant to this Agreement.

5.    The Employee represents and warrants that he/she is free to enter into the
      employment arrangements and, if applicable, the employment agreement, to
      be entered into with the Company and to perform the duties required of the
      Employee in connection with his/her employment by the Company; and that,
      except as indicated on Exhibit 1 hereto, there are no employment
      agreements, confidentiality agreements, restrictive covenants or other
      agreements or restrictions binding on the Employee or to which the
      Employee is a party which limit, prohibit or prevent the full performance
      by the Employee of his/her employment duties and arrangements with the
      Company or which would preclude the Employee from disclosing or otherwise
      limit the Employee's right to disclose to the Company any ideas,
      inventions, discoveries or other information.

6.    The Employee represents and warrants that he/she has not brought and
      agrees that he/she will not bring to the Company or use in the performance
      of his/her employment responsibilities at the Company any materials,
      documents, trade secrets or confidential information of a former employer
      or any other person which are of a confidential nature or which are not
      generally available to the public. The Employee agrees that he/she has not
      and will not disclose to the Company or seek to induce the Company to use
      any such confidential information, materials, documents or trade secrets.

7.    The Employee agrees that during his/her employment by the Company and
      following the termination of such employment, the Employee will not,
      directly or indirectly, request or cause any suppliers or customers with
      whom the Company, Zygo or any of their respective subsidiaries or
      affiliates has a business relationship to cancel or terminate any such
      business relationship with the Company, Zygo or any of their respective
      subsidiaries or affiliates or solicit, interfere with or entice from the
      Company or Zygo any employee or former employee of the Company or Zygo.

8.    Neither this Agreement nor any benefits hereunder are assignable by the
      Employee, but the terms and provisions hereof shall inure to the benefit
      of the Company's successors and assigns.

9.    This Agreement is not a contract of employment; it does not give the
      Employee any rights to any employment with the Company, and it in no way
      abridges, alters, amends or modifies any rights the Company may otherwise
      have to terminate its employment of the Employee.

                                      -2-
<PAGE>

10.   This Agreement, together with the Employment Agreement, dated August 19,
      1997, by and between the Employee and the Company and the Stock Purchase
      Agreement, dated as of August 19, 1997, by and among the Company, Zygo and
      the shareholders of the Company and all agreements and exhibits referred
      to therein, contains the entire understanding and agreement of the parties
      with respect to the matters herein contained, and no waiver or
      modification hereof shall be binding unless in writing and subscribed by
      the parties hereto.

11.   If any paragraph, clause, or phrase of this Agreement shall, by any
      federal, state or other law or by any decision of any court, be declared
      or held illegal, void or unenforceable, the remaining portions of this
      Agreement shall continue to be valid and in full force and effect.



                                      -3-
<PAGE>


      IN WITNESS WHEREOF, the parties hereto have executed this Agreement as of
the date and year first above written.

                                          SIGHT SYSTEMS, INC.



                                          By: /s/ GARY K. WILLIS 
                                          ------------------------------------
                                             Name:  Gary K. Willis   
                                             Title: Chairman of Board


                                          EMPLOYEE


                                                 /s/  DAVID GRANT
                                          ------------------------------------
                                                      David Grant



                                          AGREED TO:


                                          ZYGO CORPORATION


                                          By: /s/ GARY K. WILLIS
                                          ------------------------------------
                                             Name:  Gary K. Willis
                                             Title: President





                                                              ZYGO [Logo]
                                                              ------------------

                                                              Zygo Corporation
                                                              1997 Annual Report





                                  M A K I N G

                               P R E C I S I O N

                                    E V E N

                                    M O R E

                                P R E C I S E .



                                    [Photo]





<PAGE>


<TABLE>

CONSOLIDATED FINANCIAL HIGHLIGHTS
(Thousands, except per share amounts)

<CAPTION>
                                                                 Fiscal Year Ended June 30,          Percentage Change
                                                             ---------------------------------   ---------------------------
                                                               1997       1996(1)       1995     1996 to 1997   1995 to 1996
                                                             -------      -------      -------   ------------   ------------
<S>                                                          <C>          <C>          <C>            <C>           <C>
Net sales ..............................................     $87,220      $57,374      $32,233        52%            78%
Earnings before acquisition-related charges (2) ........     $13,960      $ 7,799      $ 2,749        79            184
Net earnings per common and common equivalent      
  share before acquisition-related charges (2)(3) ......     $  1.16      $  0.72      $  0.32        61            125
Net earnings ...........................................     $ 2,877      $ 7,799      $ 2,749       (63)           184
Net earnings per common and common                           
  equivalent share (3) .................................     $  0.24      $  0.72      $  0.32       (67)           125
Weighted average common shares and                           
  common dilutive equivalents outstanding (3) ..........      11,998       10,878        8,484        10             28

<CAPTION>
                                                                          June 30,                    Percentage Change 
                                                             ---------------------------------   ---------------------------
                                                               1997       1996(1)       1995     1996 to 1997   1995 to 1996
                                                             -------      -------      -------   ------------   ------------
<S>                                                          <C>          <C>          <C>            <C>           <C>
Working capital ........................................     $47,633      $47,148      $17,072         1%           176%
Stockholders' equity ...................................     $62,408      $54,087      $22,333        15            142

- ----------
<FN>
(1)  Restated to reflect the acquisition of NexStar Automation, Inc. as a pooling-of-interests. Periods prior to fiscal 1996
     have not been restated due to immateriality.

(2)  Excludes nonrecurring acquisition-related charges of $11,083,000 incurred in the first quarter of fiscal 1997.

(3)  Restated to reflect a 2-for-1 stock split effected in the form of a 100% stock dividend declared on January 23, 1997,
     and paid on February 27, 1997 to stockholders of record on February 3, 1997.
</FN>
</TABLE>

             [GRAPHICAL REPRESENTATION OF DATA OF BAR CHARTS BELOW]

                                   NET SALES
                                 (in thousands)

              1993 .................................    $22,702
              1994 .................................    $24,141
              1995 .................................    $32,233
              1996 .................................    $57,374
              1997 .................................    $87,220
                                                        

                          EARNINGS BEFORE INCOME TAXES
              Excluding Acquisition-Related Charges (in thousands)

              1993 .................................    $   698
              1994 .................................    $ 1,328
              1995 .................................    $ 3,956
              1996 .................................    $11,558
              1997 .................................    $21,121


                              NUMBER OF EMPLOYEES
                                   (Year End)

              1993 .................................    193
              1994 .................................    179
              1995 .................................    210
              1996 .................................    287
              1997 .................................    399


                               SALES PER EMPLOYEE

              1993 .................................    $113,000
              1994 .................................    $132,000
              1995 .................................    $173,000
              1996 .................................    $224,000
              1997 .................................    $231,000
                                                        
CORPORATE PROFILE

Zygo Corporation is a customer-focused technology leader well known for
developing yield-enhancement solutions for precision manufacturing industries.
Zygo solutions employ process measuring instruments, automation technology, and
precision components to benefit a wide variety of industries, including:
semiconductor capital equipment and components, data storage, automotive,
optical, and R&D.

Some key applications for Zygo solutions include: semiconductor mask defect
analysis, characterization of disks and heads used in hard disk drives,
ultra-precise measurement of semiconductor stepper stage position, fabrication
of optical components for laser fusion research, and automation for disk drive
manufacturing processes. 

Founded in 1970, Zygo is a publicly-owned company with shares traded on the
NASDAQ exchange. The Company is headquartered in a 100,000-square-foot (growing
to 135,000) facility in Middlefield, Connecticut, with manufacturing, regional
sales, service, and technology centers in Connecticut, California, and Colorado,
and distributors/agents worldwide providing local customer support.

- -------------------------------------------------------------------------------
On the cover is a portion of a 3D measurement plot of the surface curvature of
an in-process hard disk platter, as measured and analyzed by Zygo instruments
and software. The shape of the disk's surface is one of the critical elements
manufacturers must control in order to make higher-density drives.
- -------------------------------------------------------------------------------

<PAGE>


                                                                               1
TO OUR SHAREOWNERS

Your company concluded fiscal 1997 by posting record performance for the third
consecutive year. These results also mark the fifth year in a row of improved
year over year performance. Net sales of $87 million for fiscal 1997 were up
some 52% as compared to fiscal 1996 net sales of $57 million. As was the case in
fiscal 1996 and 1995, operating profits, pretax profits, and net earnings per
share in fiscal 1997, excluding nonrecurring acquisition-related charges, not
only increased over the previous year's level, but attained historical highs for
your company. Net earnings in fiscal 1997 of $1.16 per share, excluding one-time
acquisition-related charges, increased 61% over the $.72 per share recorded in
fiscal 1996. Continued high productivity within our operations and increased
revenues in all sectors of our business - systems, components, accessories, and
services - drove this strong earnings performance. The demand for our products,
systems, and services continued strong throughout fiscal 1997 and not only
fueled the significant revenue increases, but also resulted in the establishment
of a year-end record backlog of nearly $39 million, up some 77% versus the $22
million backlog at the end of fiscal 1996. As well as posting outstanding
operations performance in fiscal 1997, your company also made progress in a
number of other significant areas resulting in a strengthened ability to serve
our customers and provide increased value to our loyal shareowners. Included in
these activities are a 2-for-1 stock split in the third quarter of our fiscal
year, the successful integration of our subsidiary companies, Technical
Instrument Company and NexStar Automation, Inc., receipt of two prestigious
awards for our newly commercialized ZMI 2000 product line, selection by Lawrence
Livermore National Laboratory as a primary optics supplier for the National
Ignition Facility, receipt of ISO 9001 certification at our Middlefield
operations, and as we began fiscal 1998, the announcement of the addition of two
new members to our corporate family, Sight Systems, Inc. and Digital Instruments
Inc. Let's address each of these areas individually. 

                                  ---------

                                   [PHOTO]
                              OF GARY K. WILLIS
                                    
                                  ---------

STOCK SPLIT: In February of 1997, during the third quarter of our fiscal year,
your board of directors had the pleasure of authorizing a 2-for-1 stock split
effected in the form of a stock dividend paid on February 27, 1997 to
shareowners of record on February 3, 1997. This stock split was our second in as
many years, following a 3-for-2 split effected on August 21, 1995, during the
first quarter of fiscal 1996. The board's action to effect the split responded
to the increasing demand for our company's securities and resulted in further
increases to the practical float of the Company's shares and should further
attract value-oriented institutional investors to your company.

INTEGRATION OF ACQUISITIONS: During August and September of 1996, we completed
the acquisitions of Technical Instrument Company and NexStar Automation, Inc.,
respectively. These acquisitions broadened our measurement capability with the
addition of confocal microscopy technology and added parts handling and discreet
component automation capabilities to our systems offering. Both of these
complementary strengths furthered our ability to provide yield improvement
solutions to our high technology industry customers. The enhanced value of these
solutions became readily apparent to our customers and resulted in accelerated
growth rates of our Middlefield, Connecticut, NexStar, and Technical Instrument
operations.

AWARD WINNING TECHNOLOGY: Once again, during fiscal 1997, your company was
recognized for its innovative technology and the creative development of new
products. We were honored to receive two most prestigious awards for the
introduction of our ZMI 2000 motion measurement and precision positioning
systems: the Photonics Circle of Excellence Award given by Photonics Spectra
magazine to recognize "the 25 most innovative new products" and the R&D 100
Award selected by R&D magazine as "one of the 100 most significant new technical
products of the year." This was the fourth



<PAGE>


2


Circle of Excellence Award and the eighth R&D 100 Award received by your
company. We, of course, are honored to receive such recognition. 

NATIONAL IGNITION FACILITY CONTRACT: At the close of our fiscal year, we
received the initial contracts for the creation of a world class optical
components manufacturing facility from the Lawrence Livermore National
Laboratory. This award selected Zygo as a primary optical components supplier
for the National Ignition Facility to be built at Lawrence Livermore National
Laboratory in California. The National Ignition Facility is being constructed
for, and funded by, the United States Department of Energy for the peaceful
pursuit of nuclear fusion technology. This contract will result in the creation
of a world class optical manufacturing facility at Zygo Middlefield,
Connecticut, headquarters and as the future funding of the program is approved
by Congress, a continuing stream of revenue as the optics component production
continues beyond the turn of the century. In winning this contract, Zygo has
been once again recognized as the premier worldwide supplier of precision flat
optical components.

ISO 9001 CERTIFICATION: Our Middlefield operation was honored to receive ISO
9001 certification in March of 1997. This culminated a multiyear effort of all
of the employees in Middlefield in our total quality management program. A major
factor for our improved financial performance and enhanced ability to satisfy
customers resulted from our quality teams' efforts identifying areas of our
business requiring improvement and installing countermeasures to make such
improvements. ISO certification is a valued recognition of the creation of high
quality processes, procedures, and practices.

- --------
ISO 9001
 [LOGO]
- --------

ADDITIONS TO THE CORPORATE FAMILY: As we began fiscal 1998, we had the pleasure
of announcing two new additions to the corporate family: Sight Systems, Inc. and
Digital Instruments, Inc. The acquisition of Sight Systems, Inc. was completed
on August 19, 1997 and further strengthens our ability to provide yield
improvement solutions to our customers by broadening our measurement capability
through the addition of enhanced application-specific vision metrology systems.
The letter of intent announcing our intent to acquire Digital Instruments, Inc.
was signed on July 22, 1997 and this acquisition is expected to be completed
through the approval of our shareowners before the end of calendar year 1997.
Digital Instruments is the worldwide leader in the supplying of scanning probe
microscopy and the addition of this technology strengthens our precision
measurement capability. With these acquisitions, we have created the world's
leading supplier of precision metrology and measurement equipment. Both of these
acquisitions will enhance our ability to provide yield improvement solutions to
the high technology market, and we look forward with enthusiasm to integrating
them into our company during fiscal 1998.

OUTLOOK: As we enter fiscal 1998, we are confident in our ability to continue to
better serve our customers and further our performance track record. Our strong
financial position, our operating productivity improvements, our strengthened
competitive product position through new product introductions, and our enhanced
ability to provide yield improvement solutions through the addition of our
acquired companies, all will allow us to take advantage of the opportunities
that present themselves during fiscal 1998. Although no one can predict with
certainty the strength of the demand for our goods and services generated by the
markets we serve, we are optimistic about the future potential of your company
based on our strengthened market position. You, of course, can count on the best
efforts of all of us to continue to drive your company forward. Once again, we
thank you for your continued interest in, and support of, your company.


Sincerely,


/s/ GARY K. WILLIS
- -----------------------------------------
    Gary K. Willis
    President and Chief Executive Officer


September 11, 1997

<PAGE>


                                                                               3
PRECISION IS AT THE HEART OF THE SOLUTION

Growing out of the need to remain viable in today's fiercely-competitive
business climate, manufacturers all over the world have been fighting a
continuous battle to retain their existing customers and win over new ones. The
successful ones have realized that the way to do this is simple in concept -
give their customers what they want with a cost/performance value better than
their competition's. Putting this concept into practice means that manufacturers
must continually improve the quality and reliability of their products while
simultaneously reducing production costs.

In some situations, this means reducing the physical size of the product while
increasing it's performance; in other situations, it means making existing
products to much tighter specifications to improve performance and reliability.
In both cases, it is precision that is at the heart of the solution - precision
to produce miniaturized components that do many times the work of their bulky
predecessors, and precision to produce components for everyday-use products that
outperform, outlast, and represent a greater value than previous models.

- --------------------------------------------------------------------------------
                                    [PHOTO]

Everyday-use products, like contact lenses, are manufactured in mass quantity
with greater precision than ever before. Zygo precision helps manufacturers
improve their processes to make better products at lower cost.
- --------------------------------------------------------------------------------

Realizing that precision manufacturing holds the answer to maintaining a
competitive edge, manufacturers are facing production challenges unlike any they
had faced in the past. As new manufacturing techniques were developed to produce
smaller components and improve the precision of existing ones, it quickly became
clear that traditional batch sample testing and manual handling of components
would no longer be sufficient. To meet the challenges of maintaining product
quality, high throughput, and high production yields, new measurement
technologies for evaluating the precision of in-process products, and new
automation technologies for handling components without causing damage or
contamination, would be essential.

- --------------------------------------------------------------------------------
                                    [PHOTO]

Precision manufacturing, once reserved for hi-tech devices like computer hard
disk drives and semiconductor chips, is growing rapidly in many other
industries. Zygo precision helps a wide variety of manufacturers achieve their
quality and production goals.
                                    [PHOTO]
- --------------------------------------------------------------------------------

Zygo Corporation has been monitoring this growing trend in the manufacturing
industry and has committed its considerable resources in precision measurement
and automation technologies to develop solutions that help precision
manufacturers attain their quality and production goals. The next few pages
highlight some key industries that have made astounding progress in pushing the
envelope of product quality and production yields, and have done so with the
help of Zygo's solutions. 

- --------------------------------------------------------------------------------
                                    [PHOTO]

Highly-sophisticated electronic circuits, printed on miniature semiconductor
chips, make possible extremely compact electronic devices like cellular
telephones. Zygo precision helps the semiconductor industry pack more and more
circuitry onto microchips.
- --------------------------------------------------------------------------------



<PAGE>


4


DATA STORAGE INDUSTRY

The data storage industry, makers of hard disk drive components and assemblies
used in all computer systems sold in the world today, is an excellent example of
how far the precision, performance, value, and manufacturing volume of
electromechanical devices has advanced in a relatively short period of time.

- --------------------------------------------------------------------------------
                     [GRAPHICAL REPRESENTATION OF BAR CHART]

                            MAGNETIC HEAD SIZE (%)
                            AREA DENSITY

                               Head Size          Areal Density
           Year                 (percent)   (Gigabits per square inch)
           ----                 ---------   --------------------------
           1982 ...........         100%                .03
           1987 ...........          70%                .06
           1992 ...........          50%                .10
           1997 ...........          30%                .85

The physical size of magnetic heads is steadily decreasing, enabling
corresponding increases in the areal density of disk drives.
- --------------------------------------------------------------------------------

The first disk storage system for computers had a capacity of just five
megabytes, using a total of 50 rigid disks, each 24-inches in diameter. Because
this device could access data at random, it was tremendously faster than the
linear tape storage devices in use at the time, and opened up the possibility of
using computers for a wide variety of tasks that were previously impractical.
Hard disk technology steadily advanced; disk drives got physically smaller,
while their storage capacity and reliability continued to rise, and their
per-megabyte cost continued to decline. In the early 1980's, Zygo recognized the
business potential of the data storage industry and began developing specialized
software applications for our precision measuring instruments to satisfy the
growing needs of the data storage industry.

- --------------------------------------------------------------------------------
                                    [PHOTO]

Zygo's automated inspection station (above) automatically certifies and sorts
in-process disks, and our Pegasus 2000 system (below) accurately measures the
flying height of in-process heads. Both systems are used on the production line
to remove substandard components from the process.
- --------------------------------------------------------------------------------

The data storage industry's interest and confidence in Zygo's instruments and
automation solutions has grown at an increasing rate over the years. Once used
only in new-product development laboratories, Zygo solutions are now an integral
part of the manufacturing process. Zygo instruments and systems are installed on
production lines measuring hard disk platter flatness, and air-bearing surface
geometry, pole tip recession, pole tip dimensions, and flying height of magnetic
heads. Our automation systems provide precise, reliable, contamination-free
handling of drive components for processing and assembly.

- --------------------------------------------------------------------------------
                                    [PHOTO]

Zygo's AAB System automatically measures critical air bearing surface geometries
on over 20,000 heads per day, generating SPC data to help manufacturers improve
their processes.
- --------------------------------------------------------------------------------

Looking ahead to the future, Zygo is committed to working closely with the data
storage industry to develop innovative solutions to the new manufacturing
challenges that will undoubtedly arise as the demand to pack more information
into smaller spaces continues to accelerate.

- --------------------------------------------------------------------------------
                                    [PHOTO]

Controlling the characteristics of a magnetic head's pole tips (top) is
essential for manufacturing high-capacity disk drives. Zygo machine vision
metrology systems measure critical x-y dimensions, and our interferometric
systems measure the amount of recession. The 3D measurement plot (above) shows
the slight curvature of a head's air-bearing surfaces, required to maintain
proper flying height.
- --------------------------------------------------------------------------------



<PAGE>


                                                                               5

SEMICONDUCTOR COMPONENT MANUFACTURING INDUSTRY

- --------------------------------------------------------------------------------
                                    [PHOTO]

A photomask (below) is the "master" used to print one layer of a semiconductor
chip. Some chips require as many as 20 photomasks; a small defect in any one of
them could result in thousands of unusable chips.
- --------------------------------------------------------------------------------

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

                    [GRAPHICAL REPRESENTATION OF BAR CHART]

                                [ ] LINE WIDTH (um) AND
                                [ ] CHIP DENSITY
                          Millions of Bit/Chip (DRAM)

                            Line Widths           Chip Density
           Year            (micrometers)    [Millions of bits/chip (DRAM)]
           ----            --------------   ------------------------------
           1982 ...........      4.0                   0.256
           1987 ...........      2.0                   2
           1992 ...........      1.0                  16
           1997 ...........      0.35                256

The "line widths" of semiconductor chips is steadily decreasing, enabling
corresponding increases in density of semiconductor device printed on each chip.
- --------------------------------------------------------------------------------

- --------------------------------------------------------------------------------
                                    [PHOTO]

Multiple semiconductor chips are made at the same time on silicon wafers like
this one. The wafers are then "diced" and the individual chips are put into
"packages", which are then used in a wide variety of products.
- --------------------------------------------------------------------------------

In today's world, it's difficult not to encounter something that doesn't have a
semiconductor chip of some type inside. Everyone knows that computers and
calculators rely on these devices, but so do many everyday items like
automobiles, televisions, VCRs, telephones, dishwashers, vacuum cleaners, and
lawnmowers. The intelligence programmed into these chips doesn't think for us,
rather it handles a multitude of tasks to make these appliances more efficient
or easier to use. 

One of the reasons chips have become so commonplace is that manufacturing
techniques have been developed to produce them in much greater quantities and at
much lower cost. Zygo technology has been, and will continue to be, integral in
enabling manufacturers to achieve their ambitious production goals. 

The density of the circuitry on chips has been steadily increasing over the
years, and the growth is accelerating. In the early days of semiconductor
manufacturing, Gordon Moore, founder of Intel Corporation, stated that
semiconductor chip device density would double every two years. He later revised
it to say that the density would double every 18 months. This statement became
known as "Moore's Law" and still holds true today. 

To pack more circuitry on a chip, the lines that comprise the circuitry have to
become thinner. This is known in the semiconductor industry as "line width" and
serves as an indicator of the state of semiconductor manufacturing technology.
Line widths have been steadily decreasing since the semiconductor chip was
invented and, in many of today's chips, the lines are only about 0.35 um
(millionths of a meter) wide. 

With circuitry that small, it doesn't take much of a defect or contaminant to
completely ruin the chip, or a whole batch of chips. Zygo manufactures
specialized microscopes for measuring line widths and defects on wafers, and on
the photomasks containing the circuit patterns printed onto the wafers, to
enable manufacturers to better understand, and improve, their manufacturing
processes. Other Zygo measurement and automation systems are used to measure and
analyze several critical surfaces on wafers, and provide contamination-free
handling and transport during production.

- --------------------------------------------------------------------------------
                                    [PHOTO]

Zygo's confocal microscope systems are used to analyze photomask defects, and
manufacturers use the measurement data to improve the process that creates the
photomasks. Special measurement analysis software can simulate the
characteristics of the finished chip's circuitry (above right) before the
photomask is put into actual production.
- --------------------------------------------------------------------------------


<PAGE>


6

SEMICONDUCTOR CAPITAL EQUIPMENT MANUFACTURING

- --------------------------------------------------------------------------------
                     [GRAPHICAL REPRESENTATION OF BAR CHART]

     STAGE POSITIONING TOLERANCE                       (In Nanometers)
               1982 ...................................    100
               1987 ...................................     67
               1992 ...................................     37
               1997 ...................................     10

With the demand for increasing chip density and decreasing line widths, the
positioning accuracy tolerances for photolithography steppers are steadily
becoming more stringent as well.
- --------------------------------------------------------------------------------


- --------------------------------------------------------------------------------
                                    [PHOTO]

Zygo's GPI interferometer system (below) is the accepted standard in the optics
industry for extremely high precision measurements of optical surfaces and lens
systems. These systems are used to verify the precision of the lenses
(measurement above) that print the photomask patterns onto the semiconductor
wafer. 
                                    [PHOTO]
- --------------------------------------------------------------------------------

Few things in the history of mankind have had as significant an impact on
people's lives as the development and continuing miniaturization of the
semiconductor chip. Central to the manufacture of chips are machines called
photolithography steppers which photographically print the minute circuitry for
many chips onto a semiconductor wafer. Since the circuitry is applied in layers,
the same area on the wafer must be positioned under the stepper's lenses in
exactly the same position each time a new layer is printed.

In the past, when the chips were not as densely packed with circuitry, the
positioning accuracy required was about 50 nanometers (billionths of a meter).
The circuitry on today's densely-packed chips is much smaller and requires a
positioning accuracy of approximately five nanometers. This is a formidable task
for stepper manufacturers.

To meet the challenges of this task, Zygo developed a measurement system that
reliably measures with the accuracy required for today's, and tomorrow's,
steppers. The award-winning ZMI 2000 distance measuring interferometer system
accurately measures the relative position of the stage assembly that moves and
positions the in-process wafer. The ZMI system continuously sends position
information to the motor controllers that move the stage so the wafer can be
positioned precisely where it needs to be. The ZMI system does this with
unsurpassed reliability and accuracy, on production lines that run 24 hours a
day. 

Another of Zygo's technologies is also an integral part of the accuracy of
today's steppers. The lenses that focus the circuitry patterns onto the wafer
must have near-perfect optical characteristics. The manufacturers of these
lenses rely on the accuracy of Zygo's GPI family of interferometer products to
measure and analyze the surface shape and light transmissive qualities of these
lenses, and provide documentation of the measurements.

- --------------------------------------------------------------------------------
                                    [PHOTO]

Zygo's award-winning ZMI 2000 (below) distance measuring interferometer system
is used in many photolithography steppers. Its unrivaled accuracy ensures that
each chip on the wafer is in exactly the right position when a new layer is
printed. Individual chips (left) are a labyrinth of minute circuitry,
imperceptible to the unaided eye.

                                  [PHOTO]     Photonics Circle     
                                             of Excellence Award   R&D 100 Award
                                              
                                                   [logo]              [logo]
- --------------------------------------------------------------------------------


<PAGE>


                                                                               7

AUTOMOTIVE PRECISION MANUFACTURING INDUSTRIES

- --------------------------------------------------------------------------------
                     [GRAPHICAL REPRESENTATION OF BAR CHART]

                             MANUFACTURING TOLERANCE
               1982 ...................................     20
               1987 ...................................     10
               1992 ...................................      6
               1997 ...................................      3.5

Mass-produced parts, such as those in automobile engines, are becoming more and
more precise as demonstrated by steady tightening of manufacturing tolerances.
- --------------------------------------------------------------------------------
                                    [PHOTO]

Zygo's new MESA system greatly expands the range of surfaces that can be
measured with Zygo products. Precision components with a large amount of surface
figure, previously unmeasurable with Zygo instruments, can now be measured with
the MESA, opening up a great many opportunities for in-process measurements.
- --------------------------------------------------------------------------------
                                    [PHOTO]
- --------------------------------------------------------------------------------

One of the most imitated automobile commercials in recent memory shows a luxury
sedan with a pyramid of champagne glasses sitting on the hood, unwavering, while
the car is run at simulated high speed - or the one where a steel ball rolls
around the seams of the car's perfectly uniform door, hood, and trunk seams.
These commercials are often imitated by other automobile manufacturers who want
to communicate the idea that precision design and manufacturing, once reserved
for luxury-class cars, is now being applied to models aimed at the general
population.

Several years ago, quality and precision in automobile manufacturing was not at
the level it is today. Strong competition forced manufacturers to look for ways
to improve their products' quality, which meant improving not only the design,
but the precision and consistency of the manufacturing process. The
aforementioned commercials and their imitators are indicators of where the
automotive industry, and manufacturing as a whole, is headed - using higher
levels of precision to improve performance and reliability of all kinds of
commonplace products.

Historically, Zygo instruments have been valuable tools in QC labs, used for
measuring and analyzing critical surfaces on production samples. The measurement
data was used by manufacturing engineers to reduce variability and ensure higher
precision. In recent years, a growing number of manufacturers have been making
Zygo instruments an integral part of their production line, measuring and
analyzing surfaces on 100% of components produced by a variety of processes,
including: machining, grinding, molding, extruding, and polishing. Zygo
instruments assess the quality level of the parts to determine which are
acceptable for further processing and which must be rejected for scrap or
rework. They also perform statistical process control analysis on the
measurement data, which manufacturers use to refine the manufacturing process so
that fewer parts are rejected. 

As this trend toward increasing precision in commonplace products continues,
manufacturers will rely even more heavily on Zygo instruments and technologies
to monitor and improve their production processes. 
- --------------------------------------------------------------------------------
                                    [PHOTO]

When comparing surface quality of mass-produced machined parts, there is a
dramatic difference between today's parts (above) and parts produced a few years
ago (below).
                                    [PHOTO]
- --------------------------------------------------------------------------------
                                    [PHOTO]

Zygo's NewView 200 microscope system measures and analyzes surface structure on
a wide variety of manufactured parts, including honed, ground, cast, turned,
milled, and etched parts.
                                    [PHOTO]
- --------------------------------------------------------------------------------


<PAGE>


8

OUTLOOK FOR THE FUTURE


So what lies ahead? 

To understand the challenges that will face precision component manufacturers in
the future, we need only to look back a few years to see how much the industry
has progressed in such a short time. Extrapolating this development trend shows
that future demand for precision in manufactured goods will increase as more and
more commonplace products are made with higher levels of precision.

Zygo will continue to be an integral part of the progress of precision
manufacturing. We will be developing and acquiring new and innovative
measurement and automation solutions to help manufacturers produce smaller,
faster, more reliable components at a level of precision that wasn't conceivable
a few years ago. 

Traditionally used for applications in the upper reaches of precision
manufacturing, Zygo's product line is being expanded to provide yield
improvement solutions for components with less stringent production tolerances
as well. This approach will greatly expand the number of manufacturing processes
for which we can provide solutions, and open up many new opportunities for the
future. 

We are also dedicated to progressing along the growth and development course
that we have charted for ourselves. By committing resources, both human and
financial, to the task of providing yield-enhancement solutions for precision
manufacturing industries, we will be ensuring our own success by ensuring the
success of our customers.

<PAGE>

<TABLE>


FIVE-YEAR SUMMARY
(Thousands, except per share amounts)                                              Zygo Corporation and Subsidiaries  9

<CAPTION>

                                                                                Fiscal Year Ended June 30,
                                                             ---------------------------------------------------------
                                                               1997       1996(1)      1995        1994         1993
                                                             --------    --------    --------    --------     --------
<S>                                                          <C>         <C>         <C>         <C>          <C>
Net sales ................................................   $ 87,220    $ 57,374    $ 32,233    $ 24,141     $ 22,702
  Instruments and Systems sales ..........................         75%         65%         62%         54%          56%
  Modules and Components sales ...........................         25%         35%         38%         46%          44%
Gross profit .............................................   $ 41,825    $ 25,866    $ 14,231    $ 10,616     $  9,049
  % of sales .............................................         48%         45%         44%         44%          40%
Earnings before taxes and acquisition-related
  charges (2).............................................   $ 21,121    $ 11,558    $  3,956    $  1,328     $    698
    % of sales ...........................................         24%         20%         12%          6%           3%
Earnings before acquisition-related charges (2) ..........   $ 13,960    $  7,799    $  2,749    $    918     $    481
    % of sales ...........................................         16%         14%          9%          4%           2%
Net earnings per common and common equivalent
  share before acquisition-related charges (2)(3) ........   $   1.16    $   0.72    $   0.32    $   0.12     $   0.06
    Earnings per share growth rate .......................         62%        121%        181%         87%         (23)%
Net earnings .............................................   $  2,877    $  7,799    $  2,749    $    918     $    481
Net earnings per common and common
  equivalent share (3) ...................................   $   0.24    $   0.72    $   0.32    $   0.12     $   0.06
Weighted average common share and common
  dilutive equivalents outstanding (3) ...................     11,998      10,878       8,484       7,974        7,804
Research and development .................................   $  7,151    $  5,538    $  3,967    $  2,786     $  3,077
Capital expenditures .....................................   $  4,723    $  2,864    $  1,631    $  1,912     $    910
Depreciation and amortization ............................   $  2,612    $  1,477    $  1,248    $  1,348     $  1,270

<CAPTION>

                                                                                     June 30,
                                                             ---------------------------------------------------------
                                                               1997       1996(1)       1995       1994         1993
                                                             --------    --------     --------    --------     -------
<S>                                                          <C>         <C>         <C>         <C>          <C>
Working capital ..........................................   $ 47,633    $ 47,148    $ 17,072    $ 14,889     $ 14,648
Current ratio ............................................        4.6         5.2         3.6         4.8          4.1
Total assets .............................................   $ 78,799    $ 65,895    $ 29,666    $ 24,499     $ 24,555
Long-term debt (excluding current portion) ...............       --          --          --           481          613
Stockholders' equity .....................................   $ 62,408    $ 54,087    $ 22,333    $ 19,274     $ 18,416
Price-earnings ratio (2) .................................       26.5        30.4        35.2        18.1         38.2
Number of employees at year end ..........................        399         287         210         176          193
Sales per employee - average .............................   $    231    $    224    $    173    $    132     $    113
Book value per common share ..............................   $   5.91    $   5.34    $   2.84    $   2.48     $   2.37
Market price at year-end .................................   $ 30.750    $ 21.875    $ 11.250    $  2.167     $  2.292

</TABLE>
- ----------
(1)  Restated to reflect the acquisition of NexStar Automation, Inc. as a
     pooling-of-interests. Periods prior to fiscal 1996 have not been restated
     due to immateriality.

(2)  Excludes nonrecurring acquisition-related charges of $11,083,000 incurred
     in the first quarter of fiscal 1997.

(3)  Restated to reflect a 2-for-1 stock split effected in the form of a 100%
     stock dividend declared on January 23, 1997, and paid on February 27, 1997
     to stockholders of record on February 3, 1997

<PAGE>


10

MANAGEMENT'S DISCUSSION AND ANALYSIS
OF RESULTS OF OPERATIONS AND FINANCIAL CONDITION

- --------------------------------------------------------------------------------
                          NET SALES BY GEOGRAPHIC AREA
                                 (Fiscal 1997)

                 [GRAPHICAL REPRESENTATION OF PIE CHART BELOW]

            [ ] Domestic (54%) ....................  $47,695
            [ ] Japan (25%) .......................  $21,730
            [ ] Pacific Rim (15%) .................  $12,650
            [ ] Europe and Other (6%) .............  $ 5,145
- --------------------------------------------------------------------------------

- --------------------------------------------------------------------------------
           GROSS PROFIT AND GROSS PROFIT AS A PERCENT OF NET SALES
                                (in thousands)

                [GRAPHICAL REPRESENTATION OF BAR CHART BELOW]

                                                            Percent
                                               Gross          of
                                               Profit        Sales
                                               ------       ------- 
             1993 .........................   $ 9,049         40%
             1994 .........................   $10,616         44%
             1995 .........................   $14,231         44%
             1996 .........................   $25,866         45%
             1997 .........................   $41,825         48%
                
- --------------------------------------------------------------------------------

- --------------------------------------------------------------------------------
                              EARNINGS PER SHARE
                    Excluding Acquisition-Related Charges

                [GRAPHICAL REPRESENTATION OF BAR CHART BELOW]

                  1993 .........................   $0.06
                  1994 .........................   $0.12
                  1995 .........................   $0.32
                  1996 .........................   $0.72
                  1997 .........................   $1.16
         
- --------------------------------------------------------------------------------

RESULTS OF OPERATIONS

FISCAL 1997 COMPARED TO FISCAL 1996 

Net sales of $87,220,000 for fiscal 1997 increased by $29,846,000 or 52.0% from
fiscal 1996 net sales of $57,374,000. This increase was the result of strong
demand for all of the Company's instruments, systems, and components, as well
as, the addition of Technical Instrument Company ("TIC") from August 8, 1996.
Including TIC on a pro forma basis in fiscal 1996, the increase in net sales in
fiscal 1997, which already included TIC, amounted to $18,761,000 or 27.4%. Net
sales of the Company's instruments and systems, including the impact of TIC,
increased by 75.4% to $65,121,000 and net sales of modules and components, also
including the impact of TIC, increased by 9.1% to $22,099,000, in fiscal 1997,
each from fiscal 1996. These increases in net sales in fiscal 1997 were
principally due to increased market demand from data storage and semiconductor
industry customers. 

The Company's sales outside the United States amounted to $39,525,000 in fiscal
1997, an increase of $12,330,000 or 45.3% from fiscal 1996. Sales in Japan
during fiscal 1997 amounted to $21,730,000, an increase of $1,967,000 over
fiscal 1996 despite a reduction of sales for the Company's motion control
components to Canon Inc. for incorporation into Canon's photolithography
"steppers" used in production of semiconductors. Sales to other geographic
markets outside the U.S. amounted to $17,795,000 in fiscal 1997, an increase of
$10,363,000 or 139.4% from fiscal 1996. This increase was principally the result
of increased demand for the Company's instruments and systems by the data
storage and semiconductor manufacturing industries in the Pacific Rim, the
addition of TIC which has a strong market presence in the Pacific Rim, primarily
among the various producers of semiconductor masks, and increased sales of the
Company's products in Europe due to improved market conditions.


Substantially all of the Company's sales and costs are negotiated and paid in
U.S. dollars. Significant changes in the values of foreign currencies relative
to the value of the U.S. dollar can impact the sales of the Company's products
in its export markets as would changes in the general economic conditions in
those markets. The impact of such changes in foreign currency values on the
Company's sales cannot be measured.

Gross profit in fiscal 1997 amounted to $41,825,000, an increase of $15,959,000
or 61.7% over gross profit of $25,866,000 in fiscal 1996. As a percentage of net
sales, gross profit in fiscal 1997 was 48.0%, as compared to 45.1% in fiscal
1996. Gross profit dollars and gross profit as a percent of net sales increased
principally due to the effect of product mix as the Company's systems generally
sell at higher margins than its OEM metrology components and its optical
components as well as the effect of the volume of net sales and certain
volume-related manufacturing efficiencies.

Selling, general and administrative expenses in fiscal 1997 amounted to
$13,830,000 and increased by $4,330,000 or 45.6% from fiscal 1996. The increase
was primarily due to the impact of including TIC from August 8, 1996,
infrastructure additions, and volume-related expenses, such as commissions paid
to the Company's direct sales personnel and external sales agents. As a
percentage of net sales, selling, general and administrative expenses declined
in fiscal 1997 to 15.9%, as compared to 16.6% in fiscal 1996. 

Research, development and engineering expenses ("R&D") in fiscal 1997 totaled
$7,151,000 and increased by $1,613,000 or 29.1% from fiscal 1996. The increase
in R&D expenses was principally due to the impact of including TIC from August
8, 1996 and increased engineering headcount at the Company's Middlefield,
Connecticut, facilities, partially offset

<PAGE>
                                           Zygo Corporation and Subsidiaries  11

by lower material expenditures. R&D expenses as a percentage of net sales
decreased to 8.2% in fiscal 1997 as compared to 9.7% in fiscal 1996. 

The Company recorded nonrecurring acquisition-related charges in the amount of
$11,083,000 in the three months ended September 30, 1996. The nonrecurring
charges related to $999,000 of expenses incurred to complete the Company's
acquisition of NexStar Automation Inc. ("NexStar") and the write-off of
$10,084,000 of in-process research and development costs in conjunction with the
Company's acquisition of TIC. 

Excluding the nonrecurring acquisition-related charges, the Company's operating
profit in fiscal 1997 was $20,286,000, an increase of $9,458,000 or 87.3% from
operating profit in fiscal 1996. Operating profit in fiscal 1997, including the
nonrecurring acquisition-related charges, amounted to $9,203,000 as compared to
$10,828,000 in fiscal 1996. 

Income tax expense in fiscal 1997 totaled $7,161,000 on earnings before income
taxes of $10,038,000 as compared to $3,759,000 of income taxes in fiscal 1996 on
earnings before income taxes of $11,558,000. The higher tax expense as a
percentage of earnings before taxes in fiscal 1997 compared to fiscal 1996 was
principally a result of the non-tax deductible nature of the $10,084,000 of
in-process research and development charge to earnings in the quarter ended
September 30, 1996. 

Backlog at June 30, 1997, was $38,688,000 compared to $22,397,000 at June 30,
1996, an increase of $16,291,000 or 72.7%. The backlog of the Company's
instruments and systems at June 30, 1997, increased by $8,363,000 or 61.3% from
that at June 30, 1996, principally as a result of stronger demand from customers
in the data storage, semiconductor and other high technology industries for
yield enhancement systems. The backlog of the Company's modules and components
increased by $7,928,000 or 90.5% from the year earlier primarily as a result of
the Company's entering into a contract with the University of California's
Lawrence Livermore National Laboratory ("LLNL"), whereby the Company will be a
primary supplier of large plano optical components for the National Ignition
Facility ("NIF"), a $1.2 billion Department of Energy project at LLNL to produce
the world's largest laser for nuclear fusion research. The contract provides for
the Company to design, manufacture, and equip a world-class optical fabrication
facility at its Middlefield, Connecticut, operations for a fixed price of nearly
$10.0 million over an 18-month period, of which slightly in excess of $5.5
million is presently funded, the majority of which was in backlog at June 30,
1997. 

Net earnings and earnings per share for fiscal 1997 amounted to $2,877,000 and
$.24 as compared to $7,799,000 and $.72, respectively, for fiscal 1996, both
years restated for the 2-for-1 stock split. Excluding nonrecurring
acquisition-related charges, net income for fiscal 1997 totaled $13,960,000, an
increase of $6,161,000 or 79.0% from fiscal 1996. Earnings per share adjusted
for the 2-for-1 stock split, excluding the nonrecurring charges, were $1.16, up
61.1% from $.72 in fiscal 1996, despite a 10.3% increase in shares outstanding.

FISCAL 1996 COMPARED TO FISCAL 1995 

Net sales of $57,374,000 for fiscal 1996 increased by $25,141,000 or 78.0% from
fiscal 1995 net sales of $32,233,000. The increase in net sales in fiscal 1996
was principally due to increased demand for the Company's instruments and
systems from manufacturers of data storage, semiconductor, and other high
technology products. The increase in net sales was also partially attributable
to the inclusion of NexStar Automation, Inc. ("NexStar"). (See note 2). Net
sales of the Company's electro-optical instruments and systems in fiscal 1996,
which accounted for 64.7% of total fiscal 1996 net sales, increased by 86.9%
from fiscal 1995. Net sales of the Company's various components increased by
63.7% in fiscal 1996 from the prior year. 

The Company's sales outside the United States amounted to $27,195,000 in fiscal
1996, an increase of $12,214,000 or 81.5% from fiscal 1995. Sales in Japan
during fiscal 1996 amounted to $19,763,000, an increase of $10,133,000 over
fiscal 1995. The significant increase was due to the improving Japanese economy
and the improved demand for the Company's instruments and systems, including its
motion control systems which are sold to Canon for incorporation into their
step-and-repeat photolithography systems used in semiconductor manufacturing, as
well as the Company's other systems which are sold to Canon for resale in the
domestic Japanese market or used by Canon in their facilities. Sales to other
geographic markets outside the U.S. amounted to $7,432,000 in fiscal 1996, an
increase of $2,081,000 from fiscal 1995. The 38.9% increase was principally the
result of a continuation of strong sales of the Company's electro-optical
instruments, systems and accessories to the data storage and semiconductor
manufacturing industry in the Pacific Rim and increased sales in Europe. 

Gross profit in fiscal 1996 amounted to $25,866,000, an increase of $11,635,000
or 81.8% over gross profit of $14,231,000 in fiscal 1995. As a percentage of net
sales, gross profit in fiscal 1996 was 45.1%, as compared to 44.2% in fiscal
1995. Gross profit dollars and gross profit as a percent of net sales increased
principally due to the increased volume of sales from electro-optical
instruments and systems, optical components, and services, combined with
volume-related manufacturing efficiencies.

<PAGE>

12  MANAGEMENT'S DISCUSSION AND ANALYSIS (CONTINUED)

Selling, general and administrative expenses in fiscal 1996 of $9,500,000
increased by $2,963,000 from fiscal 1995. The increase was principally a result
of volume-related expenses, such as commissions, allowance for doubtful
accounts, and product marketing expenses and necessary infrastructure changes
made to support the growth of the business such as additions to sales and
marketing personnel. Approximately 40.3% of the $2,963,000 increase was
attributable to selling, general and administrative expenses relating to the
addition of NexStar. As a percentage of net sales, selling, general and
administrative expenses declined in fiscal 1996 to 16.6%, as compared to 20.3%
in fiscal 1995, principally due to the 78.0% growth in net sales.

Research and development costs in fiscal 1996 totaled $5,538,000 and increased
by $1,571,000 or 39.6% from fiscal 1995. The increase in R&D expenses primarily
resulted from spending on personnel and materials at both the Company's
principal R&D center in Middlefield, Connecticut, and its R&D facility in Simi
Valley, California, which was formed during the second half of fiscal 1995. As a
percentage of net sales, research and development costs were 9.7% and 12.3% in
fiscal 1996 and fiscal 1995, respectively. 

In fiscal 1996, the Company had operating profit of $10,828,000 as compared to
$3,727,000 in fiscal 1995. Operating profit as a percentage of net sales in
fiscal 1996 improved to 18.9% from 11.6% in fiscal 1995. 

Interest income in fiscal 1996 amounted to $946,000 and was $574,000 higher than
in fiscal 1995. This increase was primarily due to higher cash balances,
principally as a result of the sale by the Company of 845,000 shares of its
common stock in a follow-on offering which generated approximately $22.7 million
in net proceeds to the Company. 

Backlog at June 30, 1996, was $22,397,000 compared to $12,993,000 at June 30,
1995. The $9,404,000 or 72.4% increase in backlog was primarily a result of
stronger demand for all of the Company's electro-optical instruments and systems
and the inclusion of NexStar. The backlog of the Company's instruments and
systems at June 30, 1996, increased by $6,688,000 or 96.3% from that at June 30,
1995. The backlog of the Company's modules and components increased by
$2,716,000 or 44.9% from the year earlier as a result of improved demand for the
Company's motion controllers, used in the semiconductor industry, and its
precision optical components. 

The Company reported net earnings and earnings per common and common equivalent
share of $7,799,000 and $.72, respectively, in fiscal 1996 as compared to
$2,749,000 and $.32 per share in fiscal 1995. This reflected an increase in net
earnings and earnings per share of $5,050,000 (183.7%) and $.40 (125.0%),
respectively, over fiscal 1995. Per share figures have been adjusted to reflect
the impact of the 2-for-1 stock split effective February 27, 1997 and have been
restated to reflect the operations of NexStar for the full fiscal year 1996.

LIQUIDITY AND CAPITAL RESOURCES 

At June 30, 1997 working capital was $47,633,000, an increase of $485,000 from
the amount at June 30, 1996, and the Company had cash and cash equivalents of
$10,981,000 and marketable securities amounting to $12,766,000 for a total of
$23,747,000. The $14,737,000 decrease in cash and cash equivalents and
marketable securities from the amount at June 30, 1996 was partially due to the
cash paid for the acquisition of TIC (See note 2) and the repayment of certain
outstanding indebtedness of TIC (See note 10). Trade accounts receivable
increased by $10,765,000, principally as a result of the growth in the Company's
net sales and the timing of shipments in the fourth quarter of fiscal 1997. As a
result of the addition of TIC and necessary inventory to support the growth in
sales of the Company's electro-optical instruments and systems, inventory
increased by $4,494,000 at June 30, 1997 compared to the year earlier. Accounts
payable and accrued expenses increased by $3,033,000 in fiscal 1997 to
$12,905,000 due to normal business activities. The Company's expenditures for
property, plant and equipment totaled $4,723,000 in fiscal 1997 which was
$1,859,000 more than the prior fiscal year. Capital expenditures were primarily
for capacity additions and productivity improvements in the Company's optical
manufacturing facility, construction of a laser manufacturing work cell at the
Middlefield, Connecticut location, and necessary productivity-related leasehold
improvements made at TIC. The Company expects to complete certain building
additions amounting to $4.2 million in fiscal 1998. These expenditures will be
funded by operating cash flows. These building additions include the expansion
of the Middlefield, Connecticut, site facilities by 35,500 square feet to
accommodate the space required for the NIF facility and to provide additional
office facilities. As of June 30, 1997, there were no borrowings outstanding
under the Company's $3,000,000 bank line of credit. Unused amounts under the
line of credit are available for short-term working capital needs. Stockholders'
equity at June 30, 1997, increased by $8,321,000 from the year earlier to
$62,408,000 as a result of net income of $2,877,000, and increases in the
Company's common stock and paid-in capital accounts resulting from the Company's
acquisition of TIC and the exercise of employee stock options. 

Effective June 30, 1997, TIC, a wholly owned subsidiary of the Company, and
Syncotec Neue Technologien und Instrumente GmbH ("Syncotec"), 

<PAGE>
                                           Zygo Corporation and Subsidiaries  13

a German-based company, completed all necessary legal requirements allowing for
the appropriate transfer and registration of 50 percent of Syncotec shares to
TIC. Effective September 1, 1997, the Company, through TIC, purchased the
remaining 50 percent of Syncotec for approximately $2.0 million in a combination
of cash and the Company's common stock. Syncotec designs, develops,
manufactures, and markets certain products which incorporate TIC's confocal
technology for European customers. Syncotec's sales in the year ended December
31, 1996 amounted to $2.9 million (DM4.9 million). 

The Company announced on July 28, 1997 the signing of a letter of intent
providing for the Company's acquisition of Digital Instruments, Inc.
("Digital"), a privately held California based entity that designs, develops,
and manufactures high precision measurement products and systems which use
scanning probe microscopy imaging and metrology technology. These systems are
used in product research and development applications as well as to improve the
production efficiency and manufacturing yields within the data storage,
semiconductor, and other high technology industries. It is expected that the
Company will acquire all the outstanding stock of Digital and an affiliated
corporation in exchange for 7,000,000 shares of the Company's common stock.
Closing the transaction is subject to various conditions and is expected to be
accounted for as a pooling-of-interests. The transaction is subject, among other
things, to approval by the stockholders of the Company, and is expected to be
completed prior to the end of the calendar year 1997. Digital's revenues for the
year ended December 31, 1996 were approximately $50 million. 

Effective August 19, 1997, the Company acquired Sight Systems, Inc. ("SSI"), a
privately held California based business which designs, develops, and
manufactures application-specific machine vision metrology systems, for 287,400
shares of the Company's common stock. The transaction will be accounted for as a
pooling-of-interests. SSI's revenues for the year ended December 31, 1996 were
approximately $3.5 million. 

FORWARD LOOKING STATEMENTS 

This report contains forward looking statements which are subject to a number of
risks and uncertainties that may cause actual results to differ materially from
expectations. These uncertainties include, but are not limited to, general
economic conditions, competitive conditions in markets served by the Company,
most notably high technology markets such as data storage and semiconductor, and
political developments in countries where the Company conducts business.

- --------------------------------------------------------------------------------
                                WORKING CAPITAL
                                 (in thousands)

                 [GRAPHICAL REPRESENTATION OF BAR CHART BELOW]

                   1993 .........................   $14,648
                   1994 .........................   $14,889
                   1995 .........................   $17,072
                   1996 .........................   $47,148
                   1997 .........................   $47,633
 
- --------------------------------------------------------------------------------

- --------------------------------------------------------------------------------
             CAPITAL EXPENDITURES AND DEPRECIATION AND AMORTIZATION
                                 (in thousands)

                 [GRAPHICAL REPRESENTATION OF BAR CHART BELOW]


                                         Depreciation       Capital
                                       and Amortization   Expenditure
                                       ----------------   -----------
        1993 .........................      $1,270          $  910
        1994 .........................      $1,348          $1,912
        1995 .........................      $1,248          $1,631
        1996 .........................      $1,477          $2,864
        1997 .........................      $2,612          $4,723
 
- --------------------------------------------------------------------------------

- --------------------------------------------------------------------------------
                              STOCKHOLDERS' EQUITY
                                 (in thousands)

                 [GRAPHICAL REPRESENTATION OF BAR CHART BELOW]

                   1993 .........................   $18,416
                   1994 .........................   $19,274
                   1995 .........................   $22,333
                   1996 .........................   $54,087
                   1997 .........................   $62,408

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

<PAGE>

14  CONSOLIDATED BALANCE SHEETS                Zygo Corporation and Subsidiaries
(Thousands, except share and per share amounts)

<TABLE>
<CAPTION>
                                                                        June 30,   June 30,
                                                                          1997      1996
                                                                        -------    -------
<S>                                                                     <C>        <C>    
Assets 
Current assets:
        Cash and cash equivalents ..................................    $10,981    $18,449
        Marketable securities (note 3) .............................     12,766     20,035
        Receivables (note 4) .......................................     20,730     10,627
        Inventories (note 5) .......................................     11,656      7,162
        Costs in excess of billings (note 6) .......................      2,082        252
        Prepaid expenses and taxes .................................        590        233
        Deferred income taxes (note 17) ............................      2,205      1,506
                                                                        -------    -------
                Total current assets ...............................     61,010     58,264
                                                                        -------    -------
Property, plant and equipment, net (notes 7, 11, and 19) ...........      9,174      6,512
Goodwill and other intangibles, net (note 8) .......................      7,818        600
Other assets .......................................................        797        519
                                                                        -------    -------
Total assets .......................................................    $78,799    $65,895
                                                                        =======    =======
Liabilities and Stockholders' Equity
Current liabilities:
        Accounts payable ...........................................    $ 4,659    $ 4,302
        Customer progress payments .................................        251        176
        Accrued salaries and wages .................................      3,581      3,083
        Other accrued expenses .....................................      4,414      2,311
        Income taxes payable .......................................        472      1,244
                                                                        -------    -------
                Total current liabilities ..........................     13,377     11,116
                                                                        -------    -------
Deferred income taxes (note 17) ....................................      3,014        692
Stockholders' equity (notes 13, 14, 15 and 16):
        Common stock, $.10 par value per share:
          15,000,000 shares authorized; 10,765,940
          shares issued (10,337,972 in 1996) .......................      1,077        517
        Additional paid-in capital .................................     40,210     34,846
        Retained earnings ..........................................     21,405     19,060
        Net unrealized gain (loss) on marketable securities (note 3)         17        (35)
                                                                        -------    -------
                                                                         62,709     54,388
        Less treasury stock, at cost; 207,600 common shares ........        301        301
                                                                        -------    -------
                Total stockholders' equity .........................     62,408     54,087
                                                                        -------    -------
Total liabilities and stockholders' equity .........................    $78,799    $65,895
                                                                        =======    =======
</TABLE>

See accompanying notes to consolidated financial statements.

<PAGE>


CONSOLIDATED STATEMENTS OF EARNINGS        Zygo Corporation and Subsidiaries  15
(Thousands, except per share amounts)

<TABLE>
<CAPTION>
                                                          Fiscal Year Ended June 30,
                                                      -------------------------------
                                                        1997        1996        1995
                                                      -------     -------     -------
<S>                                                   <C>         <C>         <C>    
Net sales (notes 18 and 19) ......................    $87,220     $57,374     $32,233
Cost of goods sold ...............................     45,395      31,508      18,002
                                                      -------     -------     -------
                Gross profit .....................     41,825      25,866      14,231

Selling, general and administrative expenses .....     13,830       9,500       6,537
Research and development .........................      7,151       5,538       3,967
Nonrecurring acquisition-related charges .........     11,083        --          --
Amortization of goodwill and other intangibles ...        558        --          --
                                                      -------     -------     -------
                Operating profit .................      9,203      10,828       3,727
                                                      -------     -------     -------

Other income (expense):
        Interest income ..........................        883         946         372
        Interest expense (note 10) ...............       --          --           (40)
        Miscellaneous expense, net ...............        (48)       (216)       (103)
                                                      -------     -------     -------
                Total other income ...............        835         730         229
                                                      -------     -------     -------
                Earnings before income taxes .....     10,038      11,558       3,956

Income tax expense (note 17) .....................      7,161       3,759       1,207
                                                      -------     -------     -------
Net earnings .....................................    $ 2,877     $ 7,799     $ 2,749
                                                      =======     =======     =======

Earnings per common and common
        equivalent share (note 14) ...............    $  0.24     $  0.72     $  0.32
                                                      =======     =======     =======

Weighted average common share and common
        dilutive equivalents outstanding (note 14)     11,998      10,878       8,484
                                                      =======     =======     =======
</TABLE>

See accompanying notes to consolidated financial statements.

<PAGE>

                                               
<TABLE>

16  CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY                                            Zygo Corporation and Subsidiaries
    (Thousands of dollars)


<CAPTION>
                                                                                         Unrealized
                                                               Additional              Gain (Loss) on                  Total
                                                        Common   Paid-In    Retained      Marketable    Treasury   Stockholders'
                                                         Stock   Capital    Earnings      Securities     Stock         Equity
                                                        -------------------------------------------------------------------------
<S>                                                     <C>      <C>         <C>            <C>          <C>          <C>    
Balance at June 30, 1994 ............................   $  266   $10,484     $ 8,893        $ (68)       $(301)       $19,274
        Net earnings ................................     --        --         2,749         --           --            2,749
        Net unrealized gain on marketable                                                                          
           securities, net of related tax effect.....     --        --          --             65         --               65
        Exercise of employee stock options.                                                                         
           and related tax effect ...................        3       242        --           --           --              245
        Stock split (note 14) .......................      134      --          (134)        --           --             --
                                                        ------   -------     -------        -----        -----        -------
Balance at June 30, 1995 ............................      403    10,726      11,508           (3)        (301)        22,333
        Net earnings ................................     --        --         7,799         --           --            7,799
        Shares issued for NexStar (note 2) ..........       25     1,017        (247)        --           --              795
        Net unrealized loss on marketable                                                                          
           securities, net of related tax effect.....     --        --          --            (32)        --              (32)
        Issuance of common stock (note 14) ..........       85    22,607        --           --           --           22,692
        Exercise of employee stock options                                                                         
           and related tax effect ...................        4       496        --           --           --              500
                                                        ------   -------     -------        -----        -----        -------
Balance at June 30, 1996 ............................      517    34,846      19,060          (35)        (301)        54,087
        Net earnings ................................     --        --         2,877         --           --            2,877
        Shares issued for TIC (note 2) ..............       10     2,990        --           --           --            3,000
        Net unrealized gain on marketable                                                                          
           securities, net of related tax effect.....     --        --          --             52         --               52
        Exercise of employee stock options                                                                         
           and related tax effect ...................       18     2,374        --           --           --            2,392
        Stock split (note 14) .......................      532      --          (532)        --           --             --
                                                        ------   -------     -------        -----        -----        -------
Balance at June 30, 1997 ............................   $1,077   $40,210     $21,405        $  17        $(301)       $62,408
                                                        ======   =======     =======        =====        =====        =======
</TABLE>

See accompanying notes to consolidated financial statements.

<PAGE>


CONSOLIDATED STATEMENTS OF CASH FLOWS      Zygo Corporation and Subsidiaries  17
(Thousands of dollars)

<TABLE>
<CAPTION>
                                                                           Fiscal Year Ended June 30,
                                                                         -----------------------------
                                                                           1997       1996       1995
                                                                         --------   --------   -------
<S>                                                                      <C>        <C>        <C>    
Cash provided by (used for) operating activities:
        Net earnings ..................................................  $  2,877   $  7,799   $ 2,749
        Adjustments to reconcile net earnings to cash provided by
                operating activities:
                Depreciation and amortization .........................     2,612      1,477     1,248
                Deferred income taxes .................................      (255)       (67)     (248)
                Loss on disposal of assets ............................       298        266       251
                Nonrecurring acquisition-related IPR&D charges (note 2)    10,084       --        --
                Gain on sale of marketable securities .................       (49)       (16)     --
                Changes in operating accounts:
                        Receivables ...................................    (7,682)    (3,579)   (2,220)
                        Costs in excess of billings ...................    (1,830)      (252)     --
                        Inventories ...................................      (764)    (1,519)   (2,387)
                        Prepaid expenses and taxes ....................        20        350      (313)
                        Accounts payable and accrued expenses .........    (1,244)     4,136     2,751
                                                                         --------   --------   -------
                Net cash provided by operating activities .............     4,067      8,595     1,831
                                                                         --------   --------   -------
Cash provided by (used for) investing activities:
        Additions to property, plant and equipment ....................    (4,723)    (2,864)   (1,631)
        Investment in marketable securities ...........................    (3,772)   (16,986)   (1,229)
        Investments in other assets ...................................      (154)      (229)      (39)
        Acquisition of business .......................................   (11,699)      --        (100)
        Proceeds from the sale of marketable securities ...............     6,098        999      --
        Proceeds from maturity of marketable securities ...............     4,860      3,660     1,465
        Proceeds from sale of assets ..................................        18          4        12
                                                                         --------   --------   -------
                Net cash used for investing activities ................    (9,372)   (15,416)   (1,522)
                                                                         --------   --------   -------
Cash provided by (used for) financing activities:
        Repayments of long-term debt ..................................    (2,662)      --        (656)
        Net proceeds from issuance of common stock ....................      --       22,692      --
        Exercise of employee stock options ............................       499        150       245
                                                                         --------   --------   -------
                Net cash provided by (used for) financing activities ..    (2,163)    22,842      (411)
                                                                         --------   --------   -------
Net increase (decrease) in cash and cash equivalents ..................    (7,468)    16,021      (102)
Cash and cash equivalents, beginning of year ..........................    18,449      2,428     2,530
                                                                         --------   --------   -------
Cash and cash equivalents, end of year ................................  $ 10,981   $ 18,449   $ 2,428
                                                                         ========   ========   =======
</TABLE>

See accompanying notes to consolidated financial statements.

<PAGE>

18 NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
   June 30, 1997, 1996, and 1995

NOTE 1: SUMMARY OF SIGNIFICANT
ACCOUNTING POLICIES

PRINCIPLES OF CONSOLIDATION

The accompanying consolidated financial statements include the accounts of Zygo
Corporation and its subsidiaries (the "Company" or "Zygo"). All material
transactions and accounts with the subsidiaries have been eliminated from the
consolidated financial statements. As discussed in Note 2, all the outstanding
shares of NexStar Automation, Inc. ("NexStar") were acquired by the Company on
September 12, 1996, in a transaction accounted for as a pooling-of-interests,
and, accordingly, the Company's consolidated financial statements for fiscal
1996 have been restated to include the accounts and operations of NexStar. The
operating results for NexStar were not material to the combined results of the
two companies for all periods prior to fiscal 1996, and therefore, results for
those periods have not been restated.

CASH AND CASH EQUIVALENTS

The Company considers cash and cash investments with maturities at the date of
purchase of less than three months to be cash and cash equivalents.

MARKETABLE SECURITIES

The Company considers investments in securities with maturities at the date of
purchase in excess of three months as marketable securities. Marketable
securities primarily consist of tax-exempt municipal debt securities. All
securities held by the Company at June 30, 1997 and 1996, were classified as
available-for-sale and recorded at fair value or held to maturity and recorded
at cost. Unrealized holding gains and losses, net of the related tax effect, on
available-for-sale securities are excluded from earnings and are reported as a
separate component of stockholders' equity until realized.

INVENTORIES

Inventories are stated at the lower of cost (determined on a first-in, first-out
basis) or market.

REVENUE RECOGNITION

Revenues, other than revenue under the National Ignition Facility ("NIF")
contract (note 20) and revenue from certain automation contracts (note 6), are
recognized when units are shipped. Revenues related to NIF and automation
contracts are recognized under the percentage-of-completion method of
accounting.

DEPRECIATION

Depreciation rates are based on the estimated useful lives of the various
classes of assets and are computed using the straight-line method.

EARNINGS PER SHARE 

Earnings per common and common equivalent share amounts represent primary
earnings per share and are based upon the weighted average number of common
shares outstanding, plus, when their effect is dilutive, the weighted average
number of shares issuable upon exercise of outstanding stock options, less the
weighted average number of common shares which could have been repurchased with
the proceeds available from the assumed exercise of the outstanding options.
Fully diluted earnings per share are not significantly different from primary
earnings per share.

GAIN CONTINGENCY 

The Company was awarded $2,668,710 plus recovery of certain costs in a judgment
rendered by the United States District Court (District of Arizona) on June 2,
1994. The Court's decision was appealed to the Court of Appeals for the Federal
Circuit located in Washington, D.C. by the defendant and oral arguments of the
appeal were heard by the Court on March 9, 1995. On April 1, 1996, the United
States Court of Appeals for the Federal Circuit rendered an Opinion Announcing
Judgment of the Court. The appellate court affirmed-in-part and reversed-in-part
the District Court's earlier findings and remanded the case to the District
Court for a redetermination of the damage award. The Company has not recorded
any gain from the District Court's earlier ruling and will not until a final
determination of the award is made.

STOCK SPLIT

The Board of Directors of the Company declared a 2-for-1 split of the Company's
common shares, effected in the form of a 100% stock dividend which was paid on
February 27, 1997, to shareholders of record as of the close of business on
February 3, 1997. The Board of Directors of the Company also declared a 3-for-2
split of the Company's common shares, effected in the form of a 50% stock
dividend paid on August 21, 1995, to shareholders of record as of the close of
business on August 1, 1995. All presentations involving numbers of shares and
amounts per share in 1996 and prior years have been restated to reflect the
stock splits.

CAPITAL STOCK

The Company follows the practice of recording amounts received upon the exercise
of options by crediting common stock and additional capital. No charges are
reflected in the consolidated statements of operations as a result of the grant
or exercise of stock options which are granted with an exercise price at
fair-market value on the date of grant. The Company realizes an income tax
benefit from the exercise or early disposition of certain stock options. This
benefit results in a decrease in current income taxes payable and an increase in
additional capital.

FAIR VALUE OF FINANCIAL INSTRUMENTS 

The carrying amounts of cash, accounts receivable, accounts payable, and accrued
expenses approximate fair value because of the short maturity of these items.

USE OF ESTIMATES

Management of the Company has made a number of estimates and assumptions
relating to the reporting of assets


<PAGE>
                                           Zygo Corporation and Subsidiaries  19

and liabilities and the disclosure of contingent assets and liabilities to
prepare these financial statements in conformity with generally accepted
accounting principles. Actual results could differ from those estimates.

RECENTLY ISSUED ACCOUNTING PRONOUNCEMENTS

Statement of Financial Accounting Standards No. 121, Accounting for the
Impairment of Long-Lived Assets and for Long-Lived Assets to be disposed of
("Statement 121") was issued in 1995. Statement 121 requires that long-lived
assets to be disposed of, certain identifiable intangibles, and goodwill to be
held and used by an entity be reviewed for impairment whenever events or changes
in circumstances indicate that the carrying amount of an asset may not be
recoverable. Statement 121 was adopted for the Company's fiscal year 1996 and
has not had a material impact on its operating results or financial condition.

Statement of Financial Accounting Standards No. 123, Accounting for Stock-Based
Compensation ("Statement 123"), was issued in 1995. Implementation is required
in the fiscal year commencing July 1, 1996. Statement 123 established financial
accounting and reporting standards for stock-based compensation plans. The
Company has adopted the disclosure requirements of Statement 123, effective for
the fiscal year ended June 30, 1997. (See note 15). Accordingly, no compensation
cost has been recognized for its stock option plans under Statement 123.

Statement of Financial Accounting Standards No. 128, Earnings Per Share
("Statement 128"), was issued in 1997 and is effective for financial statements
for both interim and annual periods ending after December 15, 1997. Statement
128 was issued to simplify the computation of EPS and to make the U.S. standard
more compatible with the EPS standards of other countries and that of the
International Accounting Standards Committee. The Company intends to adopt
Statement 128 for its interim period ended December 31, 1997, as early adoption
is not permitted.

Statement of Financial Accounting Standards No. 129, Disclosure of Information
about Capital Structure ("Statement 129"), was issued in 1997 and is effective
for financial statements for both interim and annual periods ending after
December 15, 1997. Statement 129 was issued to establish standards for
disclosing information about an entity's capital structure. The Company is
currently compliant with this standard.

Statement of Financial Accounting Standards No. 130, Reporting Comprehensive
Income ("Statement 130"), was issued in 1997 and is effective for financial
statements for both interim and annual periods ending after December 15, 1997.
Statement 130 was issued to establish standards for reporting and display of
comprehensive income and components in a full set of general purpose financial
statements. The Company will adopt this statement no later than the interim
period ended December 31, 1997.

Statement of Financial Accounting Standards No. 131, Disclosures about Segments
of an Enterprise and Related Information ("Statement 131"), was issued in 1997
and is effective for financial statements for both interim and annual periods
ending after December 15, 1997. Statement 131 was issued to establish standards
for the way public business enterprises are to report information about
operating segments in annual financial statements and requires those enterprises
to report selected information about operating segments in interim financial
reports issued to shareholders. It also establishes standards for related
disclosures about products and services, geographic areas, and major customers.
The Company will adopt this statement no later than the interim period ended
December 31, 1997.

NOTE 2: MERGERS AND ACQUISITIONS

On August 8, 1996, the Company acquired and accounted for as a purchase, the
proprietary products division of Technical Instrument Company ("TIC"), a
privately held California-based entity that designs, manufactures, markets and
sells microscope systems and other precision optical instrument systems and
components. The Company paid $11,699,000 and issued unregistered shares of its
common stock, $.10 par value, valued at $3.0 million in exchange for all the
outstanding capital stock of TIC. The net purchase price was allocated to its
net assets acquired, less a write-off of $10,084,000 of in-process research and
development costs ("IPR&D"), as follows:

(Thousands of dollars)
Working capital .......................................  $   867
Property, plant and equipment .........................      135
Other assets ..........................................      573
Goodwill and other intangibles ........................    7,580
Debt assumed ..........................................   (2,662) 
Deferred tax liability, net ...........................   (1,878)
                                                         -------
                                                         $ 4,615
                                                         =======

Results of operations after the acquisition date are included in the 1997
Consolidated Statements of Earnings. Fiscal 1997 sales would have been increased
$1,727,000 for the July 1, 1996 to August 8, 1996 time frame with no material
impact on earnings. The following unaudited pro forma information for 1996 has
been prepared assuming that this acquisition had taken place at the beginning of
the period. The pro forma information includes adjustments to record the
amortization of intangibles arising from the transaction, to reduce interest
income for cash used for the transaction, and to adjust income taxes for the
reduction in interest income. The unaudited pro forma financial information is

<PAGE>
20 NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)

not necessarily indicative of the results of operations as they would have been
had the transactions been effected on the assumed dates.

                                                          Fiscal Year Ended 
                                                            June 30, 1996    
(Thousands, except per share amounts)                     -----------------
Pro forma net sales ......................................     $68,459
Pro forma net earnings ...................................     $ 7,968
Pro forma net earnings per common share ..................     $  0.72
                                                          -----------------

On September 12, 1996, the Company issued 500,000 shares of its common stock,
effected for the 2-for-1 stock split, in exchange for all of the outstanding
shares of NexStar Automation, Inc. ("NexStar"). The acquisition has been
accounted for as a pooling of interests and, accordingly, the Company's
consolidated financial statements for fiscal 1996 have been restated to include
the accounts and operations of NexStar. The operating results for NexStar were
not material to the combined results of the two companies for all periods prior
to fiscal 1996, and therefore, results for those periods have not been restated.
In connection with the acquisition, $999,000 of acquisition-related costs were
incurred and have been charged to nonrecurring acquisition expense in the first
quarter of fiscal 1997. The acquisition costs consisted of legal, investment
banking, and accounting fees.

NOTE 3: MARKETABLE SECURITIES

Marketable securities at June 30, 1997, consist primarily of tax-exempt bonds
issued by various state and municipal agencies which are reported either at fair
value or at cost depending on their classification. The unrealized gain on
marketable securities of $28,920 (gross) is shown net of its related tax effect
of $11,742 as a separate component of stockholders' equity.

Dividend and interest income are recognized when earned. Realized gains and
losses are included in earnings and are derived using the specific
identification method for determining the cost of securities sold.

The cost, gross unrealized holding gains, gross unrealized holding losses, and
fair value for available-for-sale securities at June 30, 1997 and 1996, were as
follows:
                      
                                             Gross         Gross              
                                          Unrealized      Unrealized          
                                            Holding        Holding       Fair 
                                  Cost       Gains          Losses       Value
(Thousands of dollars)            ----    ----------      ----------     -----
At June 30, 1997
  State and local     
    municipal bonds .........   $ 5,536       $29            $--        $ 5,565
                                -------       ---            ---        -------
At June 30, 1996
  State and local
    municipal bonds .........   $11,098       $--            $59        $11,039
                                -------       ---            ---        -------

The Company recorded gross realized gains on the maturity of investment
securities of $49,228 and $15,611 in 1997 and 1996, respectively. There were no
gross realized losses recorded in 1997 or 1996.

Maturities of investment securities classified as available-for-sale were as
follows at June 30, 1997:
                      
                                                                       Fair   
                                                             Cost      Value  
(Thousands of dollars)                                       ----      -----  
Due within one year .....................................   $  --     $  --
Due after one year through five years ...................    5,536     5,565
                                                            ------    ------
                                                            $5,536    $5,565
                                                            ======    ======

Maturities of investment securities classified as held-to-maturity were as
follows at June 30, 1997:
                       
                                                                       Fair   
                                                             Cost      Value  
(Thousands of dollars)                                       ----      -----  
Due within one year .....................................   $7,201    $7,201
Due after one year through five years ...................      --        --
                                                            ------    ------
                                                            $7,201    $7,201
                                                            ======    ======

NOTE 4: ACCOUNTS RECEIVABLE

At June 30, 1997 and 1996, accounts receivable, net of allowances, were as
follows:

                                                       June 30,        June 30,
                                                         1997            1996
(Thousands of dollars)                                  -------         -------
Trade (note 19) ......................................  $21,047         $10,282
Other ................................................      411             612
                                                        -------         -------
                                                         21,458          10,894
Allowance ............................................     (728)           (267)
                                                        -------         -------
                                                        $20,730         $10,627
                                                        =======         =======

NOTE 5: INVENTORIES

Inventories at June 30, 1997 and 1996 were as follows:

                                                       June 30,        June 30,
                                                         1997            1996
(Thousands of dollars)                                  -------         -------
Raw materials and manufactured parts .................  $ 7,435         $ 3,126
Work in process ......................................    3,248           3,558
Finished goods .......................................      973             478
                                                        -------         -------
                                                        $11,656         $ 7,162
                                                        =======         =======

NOTE 6: COSTS IN EXCESS OF BILLINGS

Revenues from automation projects are accounted for under the
percentage-of-completion method, using total project costs incurred to date in
relation to estimated total costs of the contracts to measure the stage of
completion. The cumulative effects of revisions of estimated total contract
costs and revenues are recorded in the period in which the facts become known.
When a loss is anticipated on a contract, the full amount of the loss is
provided for currently. The differences between amounts billed and revenue
recognized is shown as costs in excess of billings on the accompanying balance
sheets.

Totals of revenue earned and billings issued on contracts were as follows:

                                                       June 30,        June 30,
                                                         1997            1996
(Thousands of dollars)                                  -------         -------
Revenue recognized to date ...........................  $14,674         $ 6,303
Billings to date .....................................   12,592           6,051
                                                        -------         -------
                                                        $ 2,082         $   252
                                                        =======         =======
<PAGE>


                                           Zygo Corporation and Subsidiaries  21


NOTE 7:  PROPERTY, PLANT AND EQUIPMENT

Property, plant and equipment are stated at cost. Costs of replacements and
improvements are capitalized and depreciated. Maintenance and repairs are
charged to expense as incurred. At June 30, 1997 and 1996, property, plant and
equipment, at cost, was as follows:

                                                       June 30,        June 30,
                                                         1997            1996
(Thousands of dollars)                                  -------         -------
Land (note 19) .......................................  $   650         $   650
Building .............................................    4,170           4,352
Machinery, equipment and office furniture ............   15,372          12,072
Leasehold improvements ...............................      277              18
Construction in progress .............................    1,396             896
                                                        -------         -------
                                                         21,865          17,988
Less accumulated depreciation ........................   12,691          11,476
                                                        -------         -------
                                                        $ 9,174         $ 6,512
                                                        =======         =======

NOTE 8: GOODWILL AND OTHER INTANGIBLES

The cost of intangible assets is amortized on a straight-line basis which ranges
from 4 to 20 years. During fiscal 1997, goodwill and other intangibles increased
by $7,799,000 largely due to the Company's acquisition of Technical Instrument
Company. (See note 2). This increase was partially offset by current year
amortization of $581,000. Management evaluates, on an ongoing basis, the
carrying value of its intangible assets and makes adjustments, when impairments
are identified. Goodwill and other intangibles, net, at June 30, 1997 and 1996
were as follows:

                                                       June 30,        June 30,
                                                         1997            1996
(Thousands of dollars)                                  -------         -------
Goodwill and other intangibles .......................  $ 8,594         $   795
Accumulated amortization .............................      776             195
                                                        -------         -------
                                                        $ 7,818         $   600
                                                        =======         =======

NOTE 9: BANK LINE OF CREDIT

The Company has a $3,000,000 unsecured bank line of credit with interest at
LIBOR plus 60 basis points (approximately 6.7% at June 30, 1997). The line of
credit is available through November 30, 1997. At June 30, 1997 and 1996, no
amounts were outstanding under the bank line of credit.


NOTE 10: LONG-TERM DEBT

In the quarter ended March 31, 1995, the Company retired its 1977 and 1981
Series Industrial Development Bonds totaling $375,000 and $150,000,
respectively, prior to scheduled maturity. This transaction resulted in no
extraordinary gain or loss. The funds for these retirements were obtained from
internally generated cash flows. 

As part of the acquisition of TIC, the Company assumed outstanding debt totaling
$2,662,000. The Company repaid this debt immediately after the acquisition.

Interest payments were $0, $0, and $39,900 in fiscal 1997, 1996, and 1995,
respectively.

NOTE 11: LEASES

The Company leases certain manufacturing equipment and facilities under
operating leases, some of which include cost escalation clauses, expiring on
various dates through 2001. Total rental expense charged to operations was
$509,000 in 1997, $336,000 in 1996, and $183,000 in 1995. At June 30, 1997, the
minimum future rental commitments under noncancellable leases payable over the
remaining lives of the leases were:

                                                                Minimum      
                                                             Future Rental   
                                                              Commitments    
(Thousands of dollars)                                       -------------   

1998 .....................................................      $  517
1999 .....................................................         473
2000 .....................................................         391
2001 .....................................................         101
                                                                ------
                                                                $1,482
                                                                ======

NOTE 12: PROFIT-SHARING PLAN

The Company maintains a deferred profit-sharing plan under which substantially
all full-time employees of the Company are eligible to participate.
Profit-sharing expense for the years ended June 30, 1997, 1996, and 1995
amounted to $2,007,600, $1,295,600 and $440,000, respectively. Profit-sharing
contributions are determined annually at the discretion of the Board of
Directors.

Effective June 30, 1985, the existing profit-sharing plan was revised
and amended to incorporate a 401(k) tax deferred payroll deduction program and
an Employee Stock Ownership Program. Under the 401(k) program, employees may
contribute a tax deferred amount of up to 15% of their compensation, as defined.
The Company may contribute to the 401(k) program, an amount determined annually
at the discretion of the Board of Directors. The 401(k) contribution expense for
the years ended June 30, 1997, 1996, and 1995 amounted to $468,700, $333,900,
and $255,000, respectively. 

Under the Employee Stock Ownership Program, the Company may, at the discretion
of the Board of Directors, contribute its own stock or cash to purchase its own
stock. The purchased stock's fair market value shall not exceed the maximum
amount of employee stock ownership credit as determined under Section 416 of the
Internal Revenue Code. There were no purchases and no contributions made under
this program for the years ended June 30, 1997, 1996, and 1995.

NOTE 13: STOCKHOLDERS' AGREEMENTS

A registration rights agreement was entered into by Canon Inc., Wesleyan
University, Paul F. Forman, Carl A. Zanoni, Sol F. Laufer, and the Company in
November 1993, granting to each of these stockholders the right, until November
30, 1998, to have his or its shares of Common Stock included in any registered
public offering of the Company's securities.

<PAGE>
22 NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)

NOTE 14: STOCKHOLDERS' EQUITY

On January 23, 1997 the Board of Directors declared a 2-for-1 split effected in
the form of a 100% stock dividend payable on February 27, 1997, to shareholders
of record on February 3, 1997. This transaction resulted in the issuance of
approximately 5,320,000 additional shares of Common Stock. Stockholders' Equity
had been adjusted to recognize the effect of the stock split by reclassifying
from retained earnings to paid-in capital the par value of the additional shares
arising from the split. In addition, all references in the financial statements
to numbers of shares, per share amounts, stock option data, and market prices of
the Company's Common Stock have been restated to give retroactive recognition to
the stock split.

On July 20, 1995, the Board of Directors approved an increase in the authorized
shares of the Company's Common Stock from 10,000,000 to 15,000,000 which was
approved by the Company's stockholders at its annual meeting held on November
16, 1995. On December 13, 1995, the Company commenced a public offering of
1,300,000 shares of Common Stock, of which 845,000 shares were sold by the
Company, and 455,000 shares were sold by certain of the Company's stockholders.
The Company generated approximately $22.7 million in net proceeds, which is
being used for working capital and other general corporate purposes, and for
acquisitions.

NOTE 15: STOCK COMPENSATION PLANS

As of June 30, 1997, Zygo Corporation has two stock based compensation plans,
which are described below. (See note 16). The Company applies APB Opinion No.
25, Accounting for Stock Issued to Employees, and related interpretations in
accounting for its plans. Since all options are granted with an exercise price
equal to the fair-market value on the date of the grant, no compensation cost
has been recognized for its fixed option plans. Pro forma information regarding
net income and earnings per share is required by SFAS No. 123 "Accounting for
Stock-Based Compensation", which requires that the information be determined as
if the Company has accounted for its stock options granted in fiscal years
beginning after December 15, 1994 under the fair value method of the statement.
The fair value of options at date of grant was estimated using the Black-Scholes
model. The Company's pro forma information follows:

                                                       June 30,        June 30, 
                                                         1997            1996   
(In thousands, except per share amounts)               -------         -------  
Pro forma net income ................................   $  423          $6,613  
Pro forma earnings per share ........................   $  .04          $  .61

The fair values of these options at the date of grant was estimated with the
following weighted average assumptions for 1997 and 1996: risk free interest
rate 6.8%, no dividend yield, volatility factor of the expected market price of
the Company's common stock of 69% and an expected life of the option of 6.6
years. The above pro forma information is based on historical activity and may
not represent future trends.

NOTE 16: STOCK OPTION PLANS

1987 STOCK OPTION PLAN AND DATA

The Zygo Corporation 1987 Amended and Restated Stock Option Plan permits the
granting of non-qualified options to purchase a total of 2,850,000 shares
(adjusted for splits) of common stock at prices not less than the fair-market
value on the date of grant. Options generally become exercisable at the rate of
25% of the shares each year commencing one year after the date of grant. The
Plan, as amended will expire on September 3, 2002.

                                                          June 30, 1997
                                                    ---------------------------
                                                                    Weighted
                                                                    Average
                                                     Shares      Exercise Price
                                                    ---------    --------------
Outstanding at beginning of year .................  1,304,674       $ 2.1836
Granted ..........................................    322,500       $17.9720
Exercised ........................................   (232,950)      $ 2.1436
Expired or canceled ..............................       (900)      $ 1.6650
                                                    ---------
Outstanding at end of year .......................  1,393,324       $ 5.6865
                                                    =========

                                                          June 30, 1996
                                                    ---------------------------
                                                                    Weighted
                                                                    Average
                                                     Shares      Exercise Price
                                                    ---------    --------------
Outstanding at beginning of year .................  1,375,574       $ 2.0347
Granted ..........................................     15,500       $14.2426
Exercised ........................................    (86,400)      $ 1.7554
Expired or canceled ..............................          0       $ 0.0000
                                                    ---------
Outstanding at end of year .......................  1,304,674       $ 2.1982
                                                    =========

                                                          June 30, 1995
                                                    ---------------------------
                                                                    Weighted
                                                                    Average
                                                     Shares      Exercise Price
                                                    ---------    --------------
Outstanding at beginning of year .................    911,850       $ 1.8393
Granted ..........................................    540,226       $ 2.2436
Exercised ........................................    (76,502)      $ 1.6339
Expired or canceled ..............................          0       $ 0.0000
                                                    ---------
Outstanding at end of year .......................  1,375,574       $ 2.0347
                                                    =========

<PAGE>
                                           Zygo Corporation and Subsidiaries  23


1994 NON-EMPLOYEE DIRECTOR STOCK OPTION PLAN AND DATA

The Zygo Corporation 1994 Non-Employee Director Stock Option Plan permits the
granting of non-qualified options to purchase a total of 620,000 shares
(adjusted for splits) of common stock at prices not less than the fair-market
value on the date of grant. Options become exercisable at the rate of 20% of the
shares each year commencing one year after the date of grant. The Plan, as
amended, will expire on August 25, 2004.


                                                          June 30, 1997
                                                    ---------------------------
                                                                    Weighted
                                                                    Average
                                                     Shares      Exercise Price
                                                    ---------    --------------
Outstanding at beginning of year .................   450,000        $ 6.2292
Granted ..........................................         0        $ 0.0000
Exercised ........................................         0        $ 0.0000
Expired or canceled ..............................         0        $ 0.0000
                                                     -------
Outstanding at end of year .......................   450,000        $ 6.2292
                                                     =======

                                                          June 30, 1996
                                                    ---------------------------
                                                                    Weighted
                                                                    Average
                                                     Shares      Exercise Price
                                                    ---------    --------------
Outstanding at beginning of year .................   375,000        $ 2.0000
Granted ..........................................    75,000        $24.2594
Exercised ........................................         0        $ 0.0000
Expired or canceled ..............................         0        $ 0.0000
                                                     -------
Outstanding at end of year .......................   450,000        $ 6.2292
                                                     =======

                                                          June 30, 1995
                                                    ---------------------------
                                                                    Weighted
                                                                    Average
                                                     Shares      Exercise Price
                                                    ---------    --------------
Outstanding at beginning of year .................         0        $ 0.0000
Granted ..........................................   375,000        $ 2.0000
Exercised ........................................         0        $ 0.0000
Expired or canceled ..............................         0        $ 0.0000
                                                     -------
Outstanding at end of year .......................   375,000        $ 2.0000
                                                     =======

The following table summarizes information about all fixed stock options
outstanding at June 30, 1997:

                               Options Outstanding
        -------------------------------------------------------------------
                                Number     Weighted Average
            Range of         Outstanding      Remaining        Weighted
            Exercise           as of        Contractual         Average
             Prices         June 30, 1997       Life         Exercise Price
        -----------------   -------------   --------------   --------------
        $ 1.25  -  $ 1.92       293,950         2.68           $ 1.6287
        $ 2.00  -  $ 2.00       896,624         6.77           $ 2.0000
        $ 2.29  -  $14.88       360,750         6.93           $ 6.6211
        $15.57  -  $22.75       208,500         9.11           $19.1843
        $25.75  -  $25.75         8,500         9.67           $25.7500
        $27.38  -  $27.38        75,000         8.92           $27.3750
        -----------------   -------------   --------------   --------------
        $ 1.25  -  $27.38     1,843,324         6.52           $ 5.9308
        =================   =============   ==============   ==============


                               Options Exercisable
        -------------------------------------------------------------------
             Range of                 Number                   Weighted
             Exercise            Exercisable as of              Average
              Prices               June 30, 1997             Exercise Price
        -----------------        -----------------           --------------
        $ 1.25  -  $ 1.92             284,950                   $ 1.6276
        $ 2.00  -  $ 2.00             443,999                   $ 2.0000
        $ 2.29  -  $14.88             119,875                   $ 2.6261
        $15.57  -  $22.75               1,500                   $15.6900
        $25.75  -  $25.75                   0                   $ 0.0000
        $27.38  -  $27.38              15,000                   $27.3700
        -----------------        -----------------           --------------
        $ 1.25  -  $27.38             865,324                   $ 2.4270
        =================        =================           ==============



NOTE 17: INCOME TAXES

The components of income tax expense (benefit) for each year are as follows:

                                                  Fiscal Year Ended June 30,
                                                  --------------------------
                                                    1997     1996     1995
(Thousands of dollars)                             ------   ------   ------
Currently payable:
  Federal .......................................  $5,614   $3,264   $1,036
  State .........................................   1,494      910      421
                                                   ------   ------   ------
                                                   $7,108   $4,174   $1,457
                                                   ======   ======   ======
Deferred:
  Federal .......................................  $   38   $ (319)  $ (188)
  State .........................................      15      (96)     (62)
                                                   ------   ------   ------
                                                   $   53   $ (415)  $ (250)
                                                   ======   ======   ======
Total income tax expense ........................  $7,161   $3,759   $1,207
                                                   ======   ======   ======


Income taxes paid amounted to $6,068,000 (including cash payments of $5,432,500
and $635,500 of prior year overpayments applied to fiscal 1997), $3,403,300 and
$793,100 (including additional taxes owed for fiscal 1991), in fiscal 1997,
1996, and 1995, respectively. 

The total income tax expense differs from the amount computed by applying the
applicable U.S. federal income tax rate of 35% in 1997 and 34% in 1996 and 1995
to earnings before income taxes for the following reasons:

                                                  Fiscal Year Ended June 30,
                                                  --------------------------
                                                    1997     1996     1995
(Thousands of dollars)                             ------   ------   ------
Computed "expected" tax expense .................  $3,516   $3,994   $1,345
Increases (reductions) in
  taxes resulting from:
    Nondeductible acquisition-
      related charges ...........................   3,634      --       --
    State taxes, net of federal
      income tax benefit ........................     989      537      237
    Tax exempt interest income ..................    (170)    (245)    (108)
    FSC benefit .................................    (724)    (543)    (194)
    Other, net ..................................     (84)      16      (73)
                                                   ------   ------   ------
                                                   $7,161   $3,759   $1,207
                                                   ======   ======   ======

<PAGE>
24  NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)


The tax effects of temporary differences that give rise to significant portions
of the deferred tax assets and deferred tax liabilities as of June 30, 1997 and
1996, are presented below:

                                                       June 30,        June 30,
                                                         1997            1996
(Thousands of dollars)                                  -------         -------
Deferred tax assets:
  Accounts receivable, principally due to
    the allowance for doubtful accounts .............    $  295         $  110
  Warranty costs ....................................       347            246
  Vacation costs ....................................       104             30
  Medical insurance costs ...........................       123            123
  Inventory valuation ...............................     1,386            969
  Unrealized loss on marketable securities ..........        --             24
  Other .............................................        28             64
                                                         ------         ------
                                                          2,283          1,566
  Less valuation allowance ..........................        --             --
                                                         ------         ------
  Deferred tax asset ................................     2,283          1,566
Deferred tax liabilities:
  Prepaid expenses ..................................       (67)           (60)
  Plant and equipment, principally due
    to differences in depreciation expense ..........      (555)          (662)
  Intangibles .......................................    (2,429)            --
  Unrealized gain on marketable securities ..........       (11)            --
  Other .............................................       (30)           (30)
                                                         ------         ------
  Deferred tax liability ............................    (3,092)          (752)
                                                         ------         ------
Net deferred tax asset (liability) ..................    $ (809)        $  814
                                                         ======         ======

The net current deferred tax assets and net non-current deferred tax liabilities
as recorded on the balance sheet as of June 30, 1997 and 1996, are as follows:


                                                        June 30,        June 30,
                                                          1997            1996
(Thousands of dollars)                                  -------         -------
Net current deferred tax asset ......................    $2,205         $1,506
Net noncurrent deferred tax liability ...............    (3,014)          (692)
                                                         ------         ------
Net deferred tax asset (liability) ..................    $ (809)        $  814
                                                         ======         ======

A valuation allowance has not been recorded because the Company believes that
the deferred tax assets will, more likely than not, be realized. This
determination is based largely upon the Company's historical earnings trend as
well as its ability to carryback reversing items and recover taxes paid in the
carryback period. In addition, the Company has the ability to offset deferred
tax assets against deferred tax liabilities associated with such items as
depreciation and amortization.

NOTE 18:  PRODUCTS, PRINCIPAL CUSTOMERS, AND OPERATIONS BY GEOGRAPHIC AREA

The Company designs, develops, manufactures, and markets precision measurement
and automation systems and components used to enhance production in high
technology industries. The Company is headquartered in Middlefield, Connecticut,
and also has operations in Longmont, Colorado, and in Newbury Park, Simi Valley,
and Sunnyvale, California.

Sales to Canon Inc. and to Canon Sales Co., Inc., accounted for more than 20% of
total Company sales for each of the years ended June 30, 1997, 1996 and 1995.
(See note 19.) For the years ended June 30, 1996 and 1995, sales to a major
manufacturer of computer disk drives and related hardware and software,
accounted for 16% and 17%, respectively, of total Company sales. No other
individual customer accounted for more than 10% of total Company sales for any
year presented in the accompanying consolidated financial statements.

Export sales by geographic area were as follows:

                                                  Fiscal Year Ended June 30,
                                                  --------------------------
                                                    1997     1996      1995
(Thousands of dollars)                             ------   ------    ------
Far east:
  Japan ......................................    $21,730   $19,763  $ 9,630
  Pacific Rim ................................     12,650     4,765    3,279
                                                  -------   -------  -------
Total Far East ...............................    $34,380   $24,528  $12,909
Europe and other .............................      5,145     2,667    2,072
                                                  -------   -------  -------
Total ........................................    $39,525   $27,195  $14,981
                                                  =======   =======  =======


NOTE 19: RELATED PARTY TRANSACTIONS

Sales to Canon Inc., a stockholder, and to Canon Sales Co., Inc., a distributor
for certain of the Company's products in Japan and a subsidiary of Canon Inc.,
amounted to approximately $17,564,000 (20% of net sales), $19,761,000 (34% of
net sales), and $9,553,000 (30% of net sales), for the years ended June 30,
1997, 1996, and 1995, respectively.

Selling prices of products sold to Canon Inc. and Canon Sales Co., Inc. are
based, generally, on the normal terms given to distributors. At June 30, 1997,
1996, and 1995, there was approximately, in the aggregate, $2,345,500,
$3,198,100, and $1,104,700, respectively, of trade accounts receivable from
Canon Inc. and Canon Sales Co., Inc.

On January 4, 1996, the Company purchased approximately 22 acres of land
adjacent to the Company's facility in Middlefield, Connecticut, for a purchase
price of $440,000. The land, which was jointly owned by Paul F. Forman, Sol F.
Laufer, and Carl A. Zanoni, founders of the Company, is intended to be used to
facilitate the expansion of the Company's buildings and/or parking facilities in
the future.

NOTE 20:  MATERIAL CONTRACTS

On May 9, 1997, the Company announced it had entered into a contract with the
University of California's Lawrence Livermore National Laboratory ("LLNL"),
whereby the Company will be a primary supplier of large plano optical components
for the National Ignition Facility ("NIF"), a $1.2 billion Department of Energy
project at LLNL to produce the world's largest laser for nuclear fusion
research. The contract provides for the Company to design, manufacture, and
equip a world-class optical fabrication facility at its Middlefield,
Connecticut, operations for a fixed price of nearly $10 million over an 18-month
time period. The contract is presently funded to slightly in excess of $5.5
million and,

<PAGE>
                                           Zygo Corporation and Subsidiaries  25


consistent with similar government contracts, requires additional appropriations
from the U.S. Congress prior to the Company's receiving additional funding.
Revenues recognized on this contract in fiscal 1997 were immaterial. To
accommodate the space required for the NIF facility and provide additional
office facilities, the Company has commenced work at its Middlefield,
Connecticut, site to expand its facilities by 35,500 square feet. It is expected
that the addition will be completed in December 1997.

NOTE 21: SUBSEQUENT EVENTS

On June 30, 1997, Technical Instrument Company ("TIC"), a wholly owned
subsidiary of the Company, and Syncotec Neue Technologien und Instrumente GmbH
("Syncotec"), a German-based company, completed all necessary legal requirements
allowing for the appropriate transfer and registration of a 50 percent ownership
interest in Syncotec. The conclusion of this transaction completed commitments
made by the former owners of TIC and enabled the Company to release $440,000 of
contingent proceeds recorded as a liability at the time of the TIC acquisition
by the Company. The Company, through TIC, is negotiating the purchase of the
remaining 50 percent of Syncotec for approximately $2.0 million in a combination
of cash and the Company's common stock. Syncotec designs, develops,
manufactures, and markets certain products which incorporate TIC's confocal
technology for European customers. Syncotec's sales in the year ended December
31, 1996 amounted to $2.9 million (DM4.9 million).

The Company announced on July 28, 1997 the signing of a letter of intent
providing for the Company's acquisition of Digital Instruments, Inc.
("Digital"), a privately held California-based entity that designs, develops,
and manufactures high precision measurement products and systems which use
scanning probe microscopy imaging and metrology technology. These systems are
used in product research and development applications as well as to improve the
production efficiency and manufacturing yields within the data storage,
semiconductor, and other high technology industries. It is expected that the
Company will acquire all the outstanding stock of Digital and an affiliated
corporation in exchange for 7,000,000 shares of the Company's common stock.
Closing the transaction is subject to various conditions and is expected to be
accounted for as a pooling-of-interests. The transaction is subject, among other
things, to approval by the stockholders of the Company, and is expected to be
completed prior to the end of the calendar year 1997. Digital's revenues for the
year ended December 31, 1996 were approximately $50 million.

Additionally, the Company is in the process of acquiring Sight Systems, Inc.
("SSI"), a privately held California-based business that designs, develops,
and manufactures application-specific vision metrology systems for 287,400
shares of the Company's common stock. The transaction will be accounted for as a
pooling-of-interests. SSI's revenues for the year ended December 31, 1996 were
approximately $3.5 million.

<PAGE>


26  REPORTS OF MANAGEMENT AND INDEPENDENT AUDITORS

                                               Zygo Corporation and Subsidiaries
REPORT OF MANAGEMENT

Management is responsible for preparing the Company's financial statements and
related information that appears in this annual report. Management believes that
the financial statements fairly reflect the form and substance of transactions
and reasonably present the Company's financial condition and results of
operations in conformity with generally accepted accounting principles.
Management has included in the Company's financial statements amounts that are
based on estimates and judgments which it believes are reasonable under the
circumstances.

The Company maintains a system of internal accounting policies, procedures, and
controls intended to provide reasonable assurance, at appropriate cost, that
transactions are executed in accordance with Company authorization and are
properly recorded and reported in the financial statements, and that assets are
adequately safeguarded. 

KPMG Peat Marwick LLP audits the Company's financial statements in accordance
with generally accepted auditing standards and provides an objective,
independent review of the fairness of reported financial condition and results
of operations.

The Board of Directors of the Company has an Audit Committee composed of
nonmanagement directors. The Committee meets with financial management and the
independent auditors to review internal accounting controls and accounting,
auditing, and financial reporting matters. 


/s/ MARK J. BONNEY
- -----------------------------------------
Mark J. Bonney
Vice President, Finance & Administration,
Treasurer, and Chief Financial Officer


REPORT OF INDEPENDENT AUDITORS

THE BOARD OF DIRECTORS AND STOCKHOLDERS OF ZYGO CORPORATION:

We have audited the accompanying consolidated balance sheets of Zygo Corporation
and subsidiaries as of June 30, 1997 and 1996, and the related consolidated
statements of earnings, stockholders' equity and cash flows for each of the
years in the three-year period ended June 30, 1997. 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 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 Zygo Corporation and
subsidiaries as of June 30, 1997 and 1996, and the results of their operations
and their cash flows for each of the years in the three-year period ended June
30, 1997, in conformity with generally accepted accounting principles. 


[LOGO] KPMG PEAT MARWICK LLP 
- -----------------------------
KPMG PEAT MARWICK LLP 
Hartford, Connecticut
August 8, 1997

<PAGE>


SELECTED CONSOLIDATED QUARTERLY FINANCIAL DATA
(Thousands, except per share amounts)

                                           Zygo Corporation and Subsidiaries  27
<TABLE>
<CAPTION>
                                                                         For the Fiscal Year Ended June 30, 1997
                                                                   ---------------------------------------------------
                                                                   September 30   December 31     March 31     June 30
                                                                   ------------   -----------     --------     -------
<S>                                                                   <C>           <C>           <C>          <C>    
Net sales ..........................................................  $18,443       $20,810       $22,476      $25,491
Earnings before taxes and acquisition-                                                                        
   related charges (2) .............................................  $ 4,345       $ 4,873       $ 5,771      $ 6,132
Income taxes .......................................................    1,206         1,774         2,078        2,103
                                                                      -------       -------       -------      -------
Earnings before acquisition-related charges (2) ....................  $ 3,139       $ 3,099       $ 3,693      $ 4,029
                                                                      =======       =======       =======      =======
Net earnings per common and common equivalent
   share before acquisition-related charges (2)(3)(4) ..............  $  0.26       $  0.26       $  0.31      $  0.33
                                                                      =======       =======       =======      =======

Net earnings (3) ...................................................  $(7,944)      $ 3,099       $ 3,693      $ 4,029
                                                                      =======       =======       =======      =======
Net earnings per common and common                                                                            
   equivalent share (3)(4) .........................................  $ (0.77)      $  0.26       $  0.31      $  0.33
                                                                      =======       =======       =======      =======
<CAPTION>
                                                                        For the Fiscal Year Ended June 30, 1996 (1)
                                                                   ---------------------------------------------------
                                                                   September 30   December 31     March 31     June 30
                                                                   ------------   -----------     --------     -------
<S>                                                                   <C>           <C>           <C>          <C>    
Net sales ..........................................................  $11,831       $13,479       $15,231      $16,833
Earnings before income taxes .......................................  $ 1,549       $ 2,415       $ 3,585      $ 4,009
Income taxes .......................................................      588           876         1,038        1,257
                                                                      -------       -------       -------      -------
Net earnings .......................................................  $   961       $ 1,539       $ 2,547      $ 2,752
                                                                      =======       =======       =======      =======
Earnings per common and common
   equivalent share (3)(4) .........................................  $  0.10       $  0.15       $  0.22      $  0.23
                                                                      =======       =======       =======      =======
<FN>
- ----------

(1)  Restated to reflect the acquisition of NexStar Automation, Inc. as a pooling-of-interests. Periods prior to fiscal
     1996 have not been restated due to immateriality.

(2)  Excludes nonrecurring acquisition-related charges of $11,083,000 incurred in the first quarter of fiscal 1997.

(3)  Restated to reflect a 2-for-1 stock split effected in the form of a 100% stock dividend declared on January 23,
     1997, and paid on February 27, 1997 to stockholders of record on February 3, 1997.

(4)  Quarterly per share earnings do not necessarily equal the total per share earnings reported for the year as a
     result of the dilutive effect of common stock equivalents on the calculation of per share earnings.
</FN>
</TABLE>


STOCK DATA

NASDAQ Symbol: ZIGO

The number of stockholders of record at June 30, 1997, was 514.

The Company's common shares are traded over-the-counter and are quoted on the
NASDAQ/National Market.

Market price data for 1997 and 1996, adjusted for the effect of the 2-for-1
stock split which was effective on February 27, 1997, was as follows: 

                Fiscal Year Ended June 30, 1997  Fiscal Year Ended June 30, 1996
                -------------------------------  -------------------------------
                     High         Low                High         Low
                    -------     -------             -------     ---------
First quarter ....  $21 1/2     $14                 $14 5/8     $10 1/3  
Second quarter ...  $26         $12 1/4             $17 3/4     $12
Third quarter ....  $29 7/8     $21                 $20 1/8     $10 1/4
Fourth quarter ...  $31 1/2     $21 1/2             $31 1/16    $17 11/16
- ----------
Source: National Association of Securities Dealers, Inc.

<PAGE>

28  STOCKHOLDER INFORMATION                    Zygo Corporation and Subsidiaries

FORM 10-K405 AVAILABLE

Stockholders may obtain from the Company, without charge, a copy of the Annual
Report on Form 10-K405 filed with the Securities and Exchange Commission for
fiscal 1997.

Written requests should be directed to:

Sheree F. Denny
Director, Corporate Financial
  Planning and Reporting
Zygo Corporation
Laurel Brook Road
Middlefield, Connecticut 06455

E-mail requests should be
directed to:

[email protected]

ANNUAL MEETING

November 13, 1997, at 10 a.m.
Hotel Inter / Continental
111 East 48th Street
(Lexington and Park)
New York, New York 10017

CORPORATE HEADQUARTERS

Laurel Brook Road
Middlefield, Connecticut 06455
Web Site: www.zygo.com
E-mail: [email protected]

NEXSTAR AUTOMATION, INC.

2505-A Trade Centre Avenue
Longmont, Colorado 80501
Web Site: www.zygo.com
E-mail: [email protected]

SIGHT SYSTEMS, INC.

3541 Old Conejo Road #119
Newbury Park, California 91320
Web Site: www.zygo.com,
E-mail: [email protected]

TECHNICAL INSTRUMENT COMPANY

650 North Mary Avenue
Sunnyvale, California 94086
Web Sites: www.technical.com
           www.zygo.com
E-mail: [email protected]

AUDITORS

KPMG Peat Marwick LLP
City Place II 
Hartford, Connecticut 06103 

LEGAL COUNSEL 

Fulbright & Jaworski L.L.P. 
666 Fifth Avenue 
New York, New York 10103 

TRANSFER AGENT AND REGISTRAR

Continental Stock Transfer 
and Trust Company 
2 Broadway 
New York, New York 10004

DIVIDENDS 

The Company has not declared
or paid cash dividends since
becoming a public company.

Zygo, the Zygo logo, NexStar, and Sight Systems are registered trademarks of
Zygo Corporation.

<PAGE>

DIRECTORS AND OFFICERS

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


        [Photo]


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

Clockwise from upper left: John R. Rockwell, Paul W. Murrill, Michael R. Corboy,
Robert G. McKelvey, Seymour E. Liebman, Paul F. Forman, Robert B. Taylor.

DIRECTORS

MICHAEL R. CORBOY
Chairman and President,
Corboy Investment Company

PAUL F. FORMAN
Chairman of the Board
Zygo Corporation

SEYMOUR E. LIEBMAN
Executive Vice President and General Counsel
Canon U.S.A., Inc.

ROBERT G. MCKELVEY
Chairman and President
George McKelvey Co., Inc.

PAUL W. MURRILL
Professional Engineer

JOHN R. ROCKWELL
Retired Senior Executive

ROBERT B. TAYLOR
Vice President and Treasurer
Wesleyan University

GARY K. WILLIS
Zygo Corporation

CARL A. ZANONI
Zygo Corporation


OFFICERS

GARY K. WILLIS
President and
Chief Executive Officer

AHMAD AKRAMI
Vice President,
President NexStar Automation

WILLIAM H. BACON
Vice President,
Director of Corporate Quality

MARK J. BONNEY
Vice President, Finance and Administration,
Treasurer, and Chief Financial Officer

FRANCIS E. LUNDY
Vice President,
President Technical Instrument Company

ROBERT A. SMYTHE
Vice President,
Director of Sales and Marketing

CARL A. ZANONI
Vice President,
Research, Development
and Engineering

PAUL JACOBS
Secretary

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


        [Photo]


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

From left to right: Carl A. Zanoni, Paul Jacobs (Partner, Fulbright and Jaworski
L.L.P.), Gary K. Willis, Michael Fedoras (Partner, KPMG Peat Marwick LLP), Mark
J. Bonney.


OPERATING LOCATIONS

NexStar Automation

AHMAD AKRAMI
President

Sight Systems

DAVID GRANT
President

Technical Instrument Company

FRANCIS E. LUNDY
President

<PAGE>


ZYGO  [LOGO]
- ------------


Zygo Corporation
Laurel Brook Road
Middlefield, Connecticut 06455
Telephone: 860.347.8506
Facsimile: 860.347.8372
E-mail: [email protected]
Web Site: www.zygo.com








                                                                      EXHIBIT 21

                   SUBSIDIARIES OF ZYGO CORPORATION (DELAWARE)

         Zygo Credit Corporation (Delaware)
         100% owned by Registrant

         Zygo International Sales Corporation (U.S. Virgin Islands)
         100% owned by Registrant

         Technical Instrument Company (California)
         100% owned by Registrant (effective as of August 8, 1996)

         Syncotec Neue Technologien und Instrumente GmbH
         100% owned by Technical Instrument Company (effective as of
         September 1, 1997)

         NexStar Corporation (Colorado)
         100% owned by Registrant (effective as of September 12, 1996)

         TechniStar Corporation (Delaware)
         25% owned by NexStar Corporation

         Sight Systems, Inc. (California)
         100% owned by Registrant (effective as of August 19, 1997)






                                                                   EXHIBIT 23

                              ACCOUNTANTS' CONSENT


The Board of Directors
Zygo Corporation:


We consent to incorporation by reference in Registration Statements No.
33-62087, No. 33-57060, No. 33-20880, and No. 33-34619 on Forms S-8 of Zygo
Corporation of our reports dated August 8, 1997, with respect to the
consolidated balance sheets of Zygo Corporation and subsidiaries as of June 30,
1997, and 1996 and the related consolidated statements of earnings,
stockholders' equity, and cash flows and related schedule for each of the years
in the three-year period ended June 30, 1997, which reports appear in or are
incorporated by reference into the June 30, 1997 Annual Report on Form 10-K405
of Zygo Corporation.


KPMG PEAT MARWICK LLP





Hartford, Connecticut
September 16, 1997




                                POWER OF ATTORNEY

         KNOW ALL MEN BY THESE PRESENTS, which are intended to Constitute a
General Power of Attorney pursuant to Article V, Title 15 of the New York
General Obligations Law, that I, Michael R. Corboy, 8111 Preston Road, Suite
712, Dallas, Texas 75225, do hereby appoint Mark J. Bonney, vice president,
finance and administration, Zygo Corporation, Laurel Brook Road, Middlefield,
Connecticut 06455, my attorney-in-fact to act in my name, place, and stead in
any way which I myself could do, if I were personally present, with respect
to the following matter to the extent that I am permitted by law to act
through an agent: the signing of an Annual Report on Form 10-K for the fiscal
year ended June 30, 1997, and any amendments thereto, to be filed by Zygo
Corporation under Section 13 of the Securities Exchange Act of 1934, as
amended, with the Securities and Exchange Commission and grant full and
unqualified authority to my attorney-in-fact to delegate the foregoing power
to any person or persons whom my attorney-in-fact shall select.

     This power of attorney shall not be affected by the subsequent disability
or incompetence of the principal.

     To induce any third party to act hereunder, I hereby agree that any third
party receiving a duly executed copy or facsimile of the instrument may act
hereunder, and that revocation or termination hereof shall be ineffective as to
such third party unless and until actual notice or knowledge of such revocation
or termination shall have been received by such third party, and I, for myself
and for my heirs, executors, legal representatives, and assigns, hereby agree to
indemnify and hold harmless any such third party from and against any and all
claims that may arise against such third party by reason of such third party
having relied on the provisions of this instrument.

     IN WITNESS WHEREOF, I have hereunto signed my name this 30th day of June
1997.

                                                 /s/ MICHAEL R. CORBOY
                                            ------------------------------------
                                                     Michael R. Corboy

STATE OF TEXAS   )
                 ) ss.:
COUNTY OF DALLAS )

     On the 30th day of June 1997, before me personally came Michael R. Corboy
to me known, and to me to be the individual described in, and who executed the
foregoing instrument, and he acknowledged to me that he executed the same.


                                                     /s/ EDITH JONES
                                            ------------------------------------
                                                         Edith Jones
                                                         Notary Public

            EDITH JONES
[SEAL]  MY COMMISSION EXPIRES
          November 30, 2000



<PAGE>


                                POWER OF ATTORNEY

     KNOW ALL MEN BY THESE PRESENTS, which are intended to Constitute a General
Power of Attorney pursuant to Article V, Title 15 of the New York General
Obligations Law, that I, Paul F. Forman, 15 Flying Point Road, Stony Creek,
Connecticut 06405, do hereby appoint Mark J. Bonney, vice president, finance and
administration, Zygo Corporation, Laurel Brook Road, Middlefield, Connecticut
06455, my attorney-in-fact to act in my name, place, and stead in any way which
I myself could do, if I were personally present, with respect to the following
matter to the extent that I am permitted by law to act through an agent: the
signing of an Annual Report on Form 10-K for the fiscal year ended June 30,
1997, and any amendments thereto, to be filed by Zygo Corporation under Section
13 of the Securities Exchange Act of 1934, as amended, with the Securities and
Exchange Commission and grant full and unqualified authority to my
attorney-in-fact to delegate the foregoing power to any person or persons whom
my attorney-in-fact shall select.

     This power of attorney shall not be affected by the subsequent disability
or incompetence of the principal.

     To induce any third party to act hereunder, I hereby agree that any third
party receiving a duly executed copy or facsimile of the instrument may act
hereunder, and that revocation or termination hereof shall be ineffective as to
such third party unless and until annual notice or knowledge of such revocation
or termination shall have been received by such third party, and I, for myself
and for my heirs, executors, legal representatives, and assigns, hereby agree to
indemnify and hold harmless any such third party from and against any and all
claims that may arise against such third party by reason of such third party
having relied on the provisions of this instrument.

     IN WITNESS WHEREOF, I have hereunto signed my name this 23rd day of July
1997.

                                                    /s/ PAUL F. FORMAN
                                            ------------------------------------
                                                        Paul F. Forman
STATE OF CONNECTICUT )
                     ) ss.:
COUNTY OF NEW HAVEN  )

     On the 23rd day of July 1997, before me personally came Paul F. Forman to
me known, and known to me to be the individual described in, and who executed
the foregoing instrument, and he acknowledged to me that he executed the same.

                                                   /s/ ALICE H. GIRARDI
                                            ------------------------------------
                                                       Notary Public

                                                   My commission expires
                                                        11/30/2001



<PAGE>


                                POWER OF ATTORNEY

     KNOW ALL MEN BY THESE PRESENTS, which are intended to constitute a General
Power of Attorney pursuant to Article V, Title 15 of the New York General
Obligations Law, that I, Seymour E. Liebman, Canon U.S.A., One Canon Plaza, Lake
Success, New York 11042, do hereby appoint Mark J. Bonney, vice president,
finance and administration, Zygo Corporation, Laurel Brook Road, Middlefield,
Connecticut 06455, my attorney-in-fact to act in my name, place, and stead in
any way which I myself could do, if I were personally present, with respect to
the following matter to the extent that I am permitted by law to act through an
agent: the signing of an Annual Report on Form 10-K for the fiscal year ended
June 30, 1997, and any amendments thereto, to be filed by Zygo Corporation under
Section 13 of the Securities Exchange Act of 1934, as amended, with the
Securities and Exchange Commission and grant full and unqualified authority to
my attorney-in-fact to delegate the foregoing power to any person or persons
whom my attorney-in-fact shall select.

     This power of attorney shall not be affected by the subsequent disability
or incompetence of the principal.

     To induce any third party to act hereunder, I hereby agree that any third
party receiving a duly executed copy or facsimile of the instrument may act
hereunder, and that revocation or termination hereof shall be ineffective as to
such third party unless and until annual notice or knowledge of such revocation
or termination shall have been received by such third party, and I, for myself
and for my heirs, executors, legal representatives, and assigns, hereby agree to
indemnify and hold harmless any such third party from and against any and all
claims that may arise against such third party by reason of such third party
having relied on the provisions of this instrument.

     IN WITNESS WHEREOF, I have hereunto signed my name this 4th day of August
1997.

                                                 /s/ SEYMOUR E. LIEBMAN
                                            ------------------------------------
                                                     Seymour E. Liebman
 
STATE OF NEW YORK )
                  ) ss.:
COUNTY OF NASSAU  )

     On the 4th day of August 1997, before me personally came Seymour E. Liebman
to me known, and known to me to be the individual described in, and who executed
the foregoing instrument, and he acknowledged to me that he executed the same.


                                                   /s/ RUTH WEINSTEIN
                                            ------------------------------------
                                                       Ruth Weinstein
                                                       Notary Public

         RUTH WEINSTEIN
Notary Public, State of New York
        No. 01WE 4734936
   Qualified in Nassau County
Commission Expires Jan. 31, 1998

<PAGE>

                                POWER OF ATTORNEY

     KNOW ALL MEN BY THESE PRESENTS, which are intended to constitute a General
Power of Attorney pursuant to Article V, Title 15 of the New York General
Obligations Law, that I, Robert G. McKelvey, George McKelvey Co., Inc., 529
Washington Boulevard, Sea Girt, New Jersey 08759, do hereby appoint Mark J.
Bonney, vice president, finance and administration, Zygo Corporation, Laurel
Brook Road, Middlefield, Connecticut 06455, my attorney-in-fact to act in my
name, place, and stead in any way which I myself could do, if I were personally
present, with respect to the following matter to the extent that I am permitted
by law to act through an agent: the signing of an Annual Report on Form 10-K for
the fiscal year ended June 30, 1997, and any amendments thereto, to be filed by
Zygo Corporation under Section 13 of the Securities Exchange Act of 1934, as
amended, with the Securities and Exchange Commission and grant full and
unqualified authority to my attorney-in-fact to delegate the foregoing power to
any person or persons whom my attorney-in-fact shall select.

     This power of attorney shall not be affected by the subsequent disability
or incompetence of the principal.

     To induce any third party to act hereunder, I hereby agree that any third
party receiving a duly executed copy or facsimile of the instrument may act
hereunder, and that revocation or termination hereof shall be ineffective as to
such third party unless and until actual notice or knowledge of such revocation
or termination shall have been received by such third party, and I, for myself
and for my heirs, executors, legal representatives, and assigns, hereby agree to
indemnify and hold harmless any such third party from and against any and all
claims that may arise against such third party by reason of such third party
having relied on the provisions of this instrument.

     IN WITNESS WHEREOF, I have hereunto signed my name this 3rd day of July
1997.

                                           /s/ ROBERT G. McKELVEY
                                           -------------------------
                                               Robert G. McKelvey

STATE OF NEW JERSEY, COUNTY OF MONMOUTH ss.:

     On the 3rd day of July 1997, before me personally came Robert G. McKelvey
to me known, and known to me to be the individual described in, and who executed
the foregoing instrument, and he acknowledged to me that he executed the same.



                                           /s/  MARGARET CAMPBELL
                                           --------------------------
                                                 Notary Public
                                                Margaret Campbell
                                            Notary Public of New Jersey
                                         My Commission Expires: March 19, 2001

<PAGE>


                                POWER OF ATTORNEY

     KNOW ALL MEN BY THESE PRESENTS, which are intended to constitute a General
Power of Attorney pursuant to Article V, Title 15 of the New York General
Obligations Law, that I, Paul W. Murrill, 206 Sunset Boulevard, Baton Rouge,
Louisiana 70808, do hereby appoint Mark J. Bonney, vice president, finance and
administration, Zygo Corporation, Laurel Brook Road, Middlefield, Connecticut
06455, my attorney-in-fact to act in my name, place, and stead in any way which
I myself could do, if I were personally present, with respect to the following
matter to the extent that I am permitted by law to act through an agent: the
signing of an Annual Report on Form 10-K for the fiscal year ended June 30,
1997, and any amendments thereto, to be filed by Zygo Corporation under Section
13 of the Securities Exchange Act of 1934, as amended, with the Securities and
Exchange Commission and grant full and unqualified authority to my attorney-in
fact to delegate the foregoing power to any person or persons whom my
attorney-in-fact shall select.

     This power of attorney shall not be affected by the subsequent disability
or incompetence of the principal.

     To induce any third party to act hereunder, I hereby agree that any third
party receiving a duly executed copy or facsimile of the instrument may act
hereunder, and that revocation or termination hereof shall be ineffective as to
such third party unless and until actual notice or knowledge of such revocation
or termination shall have been received by such third party, and I, for myself
and for my heirs, executors, legal representatives, and assigns, hereby agree to
indemnify and hold harmless any such third party from and against any and all
claims that may arise against such third party by reason of such third party
having relied on the provisions of this instrument.

     IN WITNESS WHEREOF, I have hereunto signed my name this 1st day of JULY
1997.


                                                 /s/  PAUL W. MURRILL
                                                 --------------------------
                                                      Paul W. Murrill

              
STATE OF LOUISIANA, PARISH OF E. BATON ROUGE

     On the 1st day of July 1997, before me personally came Paul W. Murrill to
me known, and known to me to be the individual described in, and who executed
the foregoing instrument, and he acknowledged to me that he executed the same.


                                                  /s/ SHARON M. TAYLOR
                                                  --------------------------
                                                         Notary Public,
                                                       Sharon  M. Taylor


<PAGE>

                                POWER OF ATTORNEY

     KNOW ALL MEN BY THESE PRESENTS, which are intended to constitute a General
Power of Attorney pursuant to Article V, Title 15 of the New York General
Obligations Law, that I, John R. Rockwell, Harbour Ridge, 12790 Mariner Court,
Palm City, Florida 34990, do hereby appoint Mark J. Bonney, vice president,
finance and administration, Zygo Corporation, Laurel Brook Road, Middlefield,
Connecticut 06455, my attorney-in-fact to act in my name, place, and stead in
any way which I myself could do, if I were personally present, with respect to
the following matter to the extent that I am permitted by law to act through an
agent: the signing of an Annual Report on Form 10-K for the fiscal year ended
June 30, 1997, and any amendments thereto, to be filed by Zygo Corporation under
Section 13 of the Securities Exchange Act of 1934, as amended, with the
Securities and Exchange Commission and grant full and unqualified authority to
my attorney-in-fact to delegate the foregoing power to any person or persons
whom my attorney-in-fact shall select.

     This power of attorney shall not be affected by the subsequent disability
or incompetence of the principal.

     To induce any third party to act hereunder, I hereby agree that any third
party receiving a duly executed copy or facsimile of the instrument may act
hereunder, and that revocation or termination hereof shall be ineffective as to
such third party unless and until actual notice or knowledge of such revocation
or termination shall have been received by such third party, and I, for myself
and for my heirs, executors, legal representatives, and assigns, hereby agree to
indemnify and hold harmless any such third party from and against any and all
claims that may arise against such third party by reason of such third party
having relied on the provisions of this instrument.

     IN WITNESS WHEREOF, I have hereunto signed my name this 3rd day of July
1997.


                                               /s/  JOHN R. ROCKWELL
                                               ---------------------------
                                                    John R. Rockwell


STATE OF MAINE, COUNTY OF YORK ss.:

     On the 3rd day of July 1997, before me personally came John R. RockwelI to
me known, and known to me to be the individual described in, and who executed
the foregoing instrument, and he acknowledged to me that he executed the same.

                                               /s/  MICHELLE A. DOW             
                                               --------------------------       
                                                     Notary Public              

                                                    Michelle A. Dow            
                                                Notary Public of Maine    
                                             My Commission Expires Feb. 11, 2004
                                                                                



<PAGE>

                                POWER OF ATTORNEY

     KNOW ALL MEN BY THESE PRESENTS, which are intended to constitute a General
Power of Attorney pursuant to Article V, Title 15 of the New York General
Obligations Law, that I, Robert B. Taylor, North College, Wesleyan University,
Middletown, Connecticut 06459, do hereby appoint Mark J. Bonney, vice president,
finance and administration, Zygo Corporation, Laurel Brook Road, Middlefield,
Connecticut 06455, my attorney-in-fact to act in my name, place, and stead in
any way which I myself could do, if I were personally present, with respect to
the following matter to the extent that I am permitted by law to act through an
agent: the signing of an Annual Report on Form 10-K for the fiscal year ended
June 30, 1997, and any amendments thereto, to be filed by Zygo Corporation under
Section 13 of the Securities Exchange Act of 1934, as amended, with the
Securities and Exchange Commission and grant full and unqualified authority to
my attorney-in-fact to delegate the foregoing power to any person or persons
whom my attorney-in-fact shall select.

     This power of attorney shall not be affected by the subsequent disability
or incompetence of the principal.

     To induce any third party to act hereunder, I hereby agree that any third
party receiving a duly executed copy or facsimile of the instrument may act
hereunder, and that revocation or termination hereof shall be ineffective as to
such third party unless and until actual notice or knowledge of such revocation
or termination shall have been received by such third party, and I, for myself
and for my heirs, executors, legal representatives, and assigns, hereby agree to
indemnify and hold harmless any such third party from and against any and all
claims that may arise against such third party by reason of such third party
having relied on the provisions of this instrument.

     IN WITNESS WHEREOF, I have hereunto signed my name this 2nd day of July
1997.


                                               /s/  ROBERT B. TAYLOR
                                               ---------------------------
                                                    Robert B. Taylor



STATE OF CONNECTICUT, COUNTY OF MIDDLESEX ss.:

     On the 2nd day of July 1997, before me personally came Robert B. Taylor to
me known, and known to me to be the individual described in, and who executed
the foregoing instrument, and he acknowledged to me that he executed the same.

                                               /s/   ROBIN D. OSTRUM            
                                               --------------------------       
                                                      Notary Public             

                                                     Robin D. Ostrum           
                                                      Notary Public        
                                             My Commission Expires Aug. 31, 2001


<TABLE> <S> <C>


<ARTICLE>                     5
<LEGEND>
        This schedule contains summary financial information extracted from the
consolidated balance sheet and the consolidated statement of earnings and is
qualified in its entirety by reference to such financial statements.
</LEGEND>
       
<S>                             <C>
<PERIOD-TYPE>                   YEAR
<FISCAL-YEAR-END>                          JUN-30-1997
<PERIOD-END>                               JUN-30-1997
<CASH>                                          10,981
<SECURITIES>                                    12,766
<RECEIVABLES>                                   21,047
<ALLOWANCES>                                       728
<INVENTORY>                                     11,656
<CURRENT-ASSETS>                                61,010
<PP&E>                                          21,865
<DEPRECIATION>                                  12,691
<TOTAL-ASSETS>                                  78,799
<CURRENT-LIABILITIES>                           13,377
<BONDS>                                              0
                                0
                                          0
<COMMON>                                         1,077
<OTHER-SE>                                      61,331
<TOTAL-LIABILITY-AND-EQUITY>                    78,799
<SALES>                                         87,220
<TOTAL-REVENUES>                                87,220
<CGS>                                           45,395
<TOTAL-COSTS>                                   78,017
<OTHER-EXPENSES>                                   302
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                                   0
<INCOME-PRETAX>                                 10,038
<INCOME-TAX>                                     7,161
<INCOME-CONTINUING>                              2,877
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                     2,877
<EPS-PRIMARY>                                      .24
<EPS-DILUTED>                                      .24
        

</TABLE>


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