The FLIR CM4X Clamp Meter Family includes three professional and affordable True RMS meters designed to meet the needs of commercial and residential electricians: the CM42 AC clamp meter, the CM44 AC clamp meter with Type K thermocouple, and the CM46 AC/DC clamp meter with Type K thermocouple. Featuring Accu-Tip™ technology, taking amperage measurements on smaller-gauged wires can be done more accurately than ever – to a tenth of a digit!