The AMES INSTRUMENTS™ 1000A True-RMS AC Clamp Meter is designed for electrical motor maintenance in high voltage industrial environments. Inrush capability allows  motor start-up monitoring. The ?40mm/1.6 in. diameter jaw can easily handle large conductors. This professional T-RMS clamp meter offers a full range of standard multimeter features, including AC/DC current, AC/DC voltage, frequency, True-RMS, non-contact voltage detection, resistance, continuity a built in work light. CAT III 1000v , CAT IV 600v safety rating.