With its auto-range and high sensitivity, the General Technologies 600 Amp AC/DC Current Clamp Meter, No. CM600, allows the measurement of AC/DC currents with a resolution down to 0.1 A, and up to a maximum of 600A, making it ideal for testing all kinds of loads found in electric motors, fuel pumps, charging systems, starter currents, alternators, and more. The CM600 features a small and narrow jaw, which can accept cables up to 1" (25.4mm) in diameter and be used in confined spaces, wire bundles, and small gauge wires. Other features include up to 600V AC/DC voltage and resistance measurement functions, continuity test (with buzzer), and display hold and peak detector functions.