Y81GG is a clamp-on DC/AC current probe from F.W.Bell, which can be used with a voltmeter, multimeter, or oscilloscope to read DC, AC, or composite (AC on DC) current measurements. The jaws on the Y81GG are designed to clamp around conductors up to 3/4 inch in diameter. The pistol shape allows safe, easy, one-hand operation when making current measurements.