The Klein Tools 12:1 Dual Laser Infrared Thermometer measures transformers, motors, compressors, ducts, electrical circuits, valves, vents, etc., in hard to reach areas quickly and easily. It offers safe temperature measurements -- without contact -- while systems are operating. The rugged thermometer provides drop protection of up to 6.6 ft. or 2 meters making it more durable and able to handle the rigors of a job site.