Established in 1969, Clarke-Hess Communications Research Corporation is an electronics testing and measurement company that specializes in direct current and low-frequency applications. The company manufactures precision testing and measurement equipment for computer, power supply, transformer and ultrasonic applications. Its products include volt-ampere-wattmeters, multifunction calibrators, phase meters, phase angle voltmeters, gain analyzers, transconductance amplifiers and angle position indicators. The company s products are available in various models, such as Model 9500, Model 2500A, Model 5500-2, Model 2500, Model 828 and Model 2335. It offers services to laboratories, military agencies, and commercial and industrial firms throughout the world. Clarke-Hess Communications Research Corporation s clients include General Electric, Philips, Underwriters Laboratories, General Motors, Branson Ultrasonics, Boeing, Northrop Grumman, Honeywell and the Canadian Standards Association.