Sierra 18-9908 AC/DC 600A Clamp MeterAllows the measurement of AC/DC currents w/ a resolution down to 0.1A & up to a maximum of 600A.Current measurement up to 600 AVoltage measurement up to 600 VFeatures: Clamp opens up to 1" (25.4mm); One rotary switch operation; Large 4 digit LCD display; Relative measurement; One-touch auto zero; Peak hold function; Data hold function; Includes soft shell carrying case;