Uni-T UT256 MultimeterUni T UT256 clamp meter The Uni T UT256 is a compact True RMS clamp meter designed for convenient measurement of AC and DC currents up to 60 A without the need to disconnect the circuit. Its slim design and 10 mm jaw opening make it easy to work in tight switchgear and hard to reach areas, making the device ideal for service and diagnostic work. An additional advantage is the built in NCV sensor at the tip of the jaw, which enables non contact voltage