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March 12, 2003

Excellon Automation Co. Provides Service and Support for ESI Legacy ("Dynamotion") Drilling Machines

Excellon Automation Company, a subsidiary of Esterline Technologies (NYSE: ESL), provides service, spare parts and support for Dynamotion drilling machines. Electro Scientific Industries, Inc. (Nasdaq: ESIO) and Excellon announced an agreement in January 2003 after ESI decided to exit the mechanical drilling business.

Excellon has factory authorized spare parts on inventory, field service knowledge, schematics and parts lists necessary to support the installed base of ESI's mechanical drilling systems, including the "Dynamotion" brand.

"ESI wanted to make sure that customers are further provided with world-class service," said Jack Kurdock, vice president of operations for ESI. "The agreement with Excellon emphasizes our commitment for long-term support of our customers."

"Excellon has the most comprehensive service and support organization in North America to support our large installed base of drilling and routing equipment," said Bob Bell, general manager of Excellon. "The agreement with ESI gives us the opportunity to offer ESI's customers the level of support they can expect from an industry leader."

About ESI

ESI, headquartered in Portland, Oregon, supplies high-value, high-technology manufacturing equipment to the global electronics market. Using its expertise in laser/material interaction, small parts handling, machine vision and real-time control systems, the company enables the production of leading-edge products for customers in the semiconductor, passive component and electronic interconnect markets.

About Excellon

Excellon Automation Company is a subsidiary of Esterline Technologies (NYSE:ESL). Excellon is the leader in via formation solutions, featuring a complete product spectrum from mechanical drilling and routing to laser via formation systems.