1/4" diameter, 5.00 MHz dual element transducer for measuring thickness of steel and more.Potted cable, side in. Dakota Ultrasonics dual element transducers are for use with their ultrasonic thickness gauges. These transducers include a 4' cable as well as either potted, microdot or lemo connectors. A number of features including a high temperature option, high wear armored cable, extra resolution and others are available with certain transducers to better suit the needs of difficult applications. Transducers are available in 3/16, 1/4 and 1/2" diameters.