Extech Instruments started in 1971 as a manufacturer dedicated to building superb measurement and test equipment. When engineers, HVAC technicians, maintenance workers, and others need to accurately troubleshoot and repair applications, they trust Extech for its superior testing tools. Extech’s meters, probes, data loggers, and data acquisition (DAQ) solutions offer a host of ways that engineers can prevent and identify problems. Whether a problem is mechanical, electrical, environmental, or dealing with safety and maintenance, Extech has a solution. Browse our selection of Extech meters, thermometers, data loggers, anemometers, sound level meters, clamp meters, and more at ValueTronics – used and refurbished.