Incorporated in 1970, Extech Instruments is based in Nashua, New Hampshire USA. Recognized for the breadth and depth of its Test & Measurement offering and strong distribution network. Extech was acquired by FLIR Systems in November 2007. The Extech Instruments Division is a manufacturer and supplier of 15 major product categories of technically advanced, portable meters including multimeters, clamp meters, electrical testers, and environmental meters for the measurement of light, sound, temperature, humidity, airflow, RPMs, and water quality.