Suitable for the measuring of Insulation Resistance of wires and cables, transformer, motors, chocks, switches,and components. Measure the Insulation resistance from 10 Meg ohms 1000 Million Meg ohms. Provided with its own stabilized DC Test Volts of fixed or variable from 100 volts to 1000 Volts. Capable of one minute Insulation resistance of Wires / Cables, components under test for production / Test Departments / Research Laboratory. High Insulation Low Noise Terminals with RF Shielded test Leads.