Greenlee’s Handheld Ground-Resistance Tester
Greenlee’s handheld ground-resistance tester reads ground resistance down to 0.10 Ohms. The impedance function is capable of testing four separate frequencies: 50 Hz, 60 Hz, 128 Hz and 2,083 Hz. It operates in temperatures between –4 to 131°F. It includes a calibration loop, and it stores measurements in its memory.