UNI-T UT278D Ground Pile Clamp Earth Resistance Tester also called Loop Resistance Tester, is used for grounding resistance test. Designed with 2.4-inch color screen, it is characterized by aesthetic appearance, easy to carry, wide range, high resolution, stable performance, strong anti-interference ability. It is mainly used to measure ground resistance of power distribution lines, gas stations, grounding grids, lightning rods, telecommunication, electric power, meteorology, oil fields and others.