Designed to accurately measure current, current leaks (parasitic draws down to 1 mA) and electrical loads from 1 mA to 100 amp AC/DC and voltages from 0 to 600 AC/DC. Current measurement: 1 mA to 100 AVoltage measurement up to 600 VClamp opens up to 1/2" (12.5mm)Operates with one rotary switchIncludes soft shell carrying case