CM4375-50 AC/DC Clamp MeterHioki clamp on meters are best in class measuring devices incorporating Hiokis expertise in current sensing technology. The CM4375 50 is a 1000A AC DC True RMS clamp meter that features a uniquely designed slim jaw that lets you easily get into the narrow gaps between cables in crowded electrical distribution boxes without fear of damaging the cables or the clamp meter. The broad IP54 dustproof and waterproof enclosure enables professionals to work