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News Release
September 6, 2000

Zygo Corporation Introduces Breakthrough In-Process Metrology Tool for Precision Automotive Parts and Assemblies

First 3D Optical Interferometer for the Simultaneous Measurement of Flatness, Thickness, and Parallelism of Critical-Tolerance Automotive Parts Will Increase Fuel Efficiency, Reduce Emissions, and Improve Production Costs and Quality.

MIDDLEFIELD, CONNECTICUT September 6, 2000…..Zygo Corporation (NASDAQ:ZIGO), a world leader in interferometric measuring equipment, today introduced a breakthrough in-process metrology tool at the International Manufacturing Technology Show and Manufacturing Conference (IMTS).

The Simetra FTPä is the world's first 3D optical interferometer for in-process verification of geometric dimensions and tolerances (GD&T) of precision-engineered parts. The Simetra FTPä captures thousands of three-dimensional data points to compare measured values to GD&T targets in a few seconds, enabling automotive and truck parts manufacturers to improve the quality of their parts and assemblies while lowering production costs. These improvements will increase fuel efficiency, reduce emissions, and enhance safety and reliability.

Large fuel injector manufacturers in need of leading-edge production technology have placed the first orders for the system. Beta evaluations have demonstrated rapid part sorting with unsurpassed gauge repeatability and reproducibility; leading to significantly reduced scrap and unusually fast payback - in as little time as several months.

The Simetra FTPä is Zygo Corporation's latest offering in a series of products designed for the industrial market, including the NewViewä, MESAä, and GPIä. The Simetra product line is specifically designed for factory-floor installation and automation. Initially targeted for the automotive industry, the Simetra FTPä optical technology also promises enhanced production yield for telecommunication, semiconductor, and data storage industries. Volume shipments of the Simetra FTPä will commence in the first half of 2001.

"Based upon initial tests on customers' parts, we expect the Simetra™ product line to have a tremendous impact on production throughputs," commented Randy Young, product marketing manager. "Assemblies perform better when the critical parts have been measured accurately and with high data density. The beauty of the Simetra™ is that our customers can get simultaneous 3D flatness, thickness, and parallelism results, with several times better gauge performance, in the same amount of time as getting minimal data from prior metrology. This performance is ideal for precision sorting, a critical step on the assembly line. The Simetra™ will play a major role in enabling manufacturers to meet the next generation fuel efficiency and emissions requirements."

Zygo Corporation (NASDAQ; ZIGO), headquartered in Middlefield, Connecticut, is a leading worldwide developer and supplier of high precision optics, optical, and fiber optic assemblies, high performance metrology instruments, and automation for the telecommunications, semiconductor, data storage, and industrial markets. See ZYGO's web site at www.zygo.com for additional information.

This press release may contain forward-looking statements within the meaning of Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Securities Exchange Act of 1934, as amended, which reflect the Company's (ZYGO's) current judgment on certain issues. Because such statements apply to future events, they are subject to risks and uncertainties that could cause the actual results to differ materially. Important factors, which could cause actual results to differ materially are described in the Company's reports on Form 10-K and 10-Q on file with the Securities and Exchange Commission.

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