Other Test InstrumentChina 200A Portable Micro Ohm Meter Loop Resistance Contact Resistance 50A, 100A, 150A, 200A Circuit Breaker Tester for High Voltage Switchgear Touch Screen LCD, Find details about China Contact Resistance Tester 100A, 100A 200A Micro Ohmmeter from 200A Portable Micro Ohm Meter Loop Resistance Contact Resistance 50A, 100A, 150A, 200A Circuit Breaker Tester for High Voltage Switchgear Touch Screen LCD