Company Overview

Electrical Instrument Service, Inc. was founded in 1963 as a repair and calibration laboratory for electrical test equipment. It was set up by former employees of Sensitive Research Instrument Corporation after that company was purchased by the Singer Company.

After years of providing service and then manufacturing under license from the Singer Company, we purchased the Sensitive Research Instrument line in 1975. Later that year, we also purchased Greibach Instruments. In 1985, we added the Weston Instruments portable analog meter line of instruments.

Currently, we are manufacturing all three product lines as well as providing special shunt assemblies to the aerospace industry. Product support is provided in terms of repair service, provision of spare parts as well as certification to NIST in accordance with ANSI / NCSL-540Z, and / or MIL-STD-45662A.

A listing of the various models available can be found under Product Info. Our instrumentation is in use throughout the world and is used by independent testing and calibration laboratories, cable and electrical appliance manufacturers, electrical utilities, various government facilities as well as manufacturers of such items as CRT's, transformers, computers and motors. Our lines of Sensitive Research electrostatic voltmeters, voltage dividers and high current, low resistance shunts are used in standards laboratories and our normal line of secondary standards are used in production, engineering labs and by quality assurance departments.