Incorporated in 1970, Extech Instruments is based in Waltham, Massachusetts and recognized for the breadth and depth of its Test & Measurement offering and strong distribution network. Extech was acquired by FLIR Systems in November 2007. Extech Instruments is a manufacturer and supplier of portable meters including multimeters, clamp meters, electrical testers and environmental meters for the measurement of light, sound, temperature, humidity, airflow, RPMs and water quality. The company has a strong presence in the electrical, HVACR, construction, manufacturing, plant/MRO, process and automation, environmental, electronics/testing and field service/maintenance sectors worldwide.