General Radio
General Radio (later, GenRad) was a manufacturer of electronic test equipment. Started in Cambridge, Massachusetts in 1915 by Melville Eastham, the company moved to West Concord in the 1950s. There, it became a major player in the automatic test equipment (ATE) business, manufacturing a line of testers for assembled printed circuit boards. It also produced extensive lines of electrical component measuring equipment, sound and vibration measurement and RLC standards.
The company was eventually acquired by Teradyne in 2001. IET Labs, Inc. purchased the GenRad instrumentation product lines.