Clamp on Earth Resistance tester, based on loop resistance principle that provides earth resistance measurements without any auxiliary spike electrodes or unhooking ground earth wire. The Equipment simply has to be clamped onto the ground wire or strip to obtain earth resistance value with high accuracy. The unit also measures leakage Clamp on earth/ ground resistance measurement upto 0.010~1000 ohms. Accuracy 0.1 ~ 0.99ohm: 1%; 1 ~ 49.9 ohm: 1.5%. Also measure current leakage upto 20 A. No spines required for measurement.