The 382357 is a clamp-on ground resistance tester that allows for non-contact measurements of ground conductors. True RMS AC leakage current ranges from 0.2mA to 30A, with a resolution of 1.000mA. Datalogging is programmable, with 116 data points. Performs without the need for additional spikes. Comes with a 9V battery, resistance check plate, and a sturdy metal storage container.