Ultrasonic Thickness GaugeExclusive micro-computer LSI circuit and crystal time base offer high accuracyDigital display provides exact readings without guessing or errorsBroad band receiving sensitivity means the meter can read probes of different frequenciesAuto calibrationAutomatic material calibrationSelectable metric or imperialMeasures the thickness of steel, cast iron, aluminum, red copper, zinc, quartz glass, polyethylene, PVC, gray cast iron and nodular cast ironDisplay sound velocity at the touch of a buttonMeasuring range: 1.5 to 200 mm in #45 steelVelocity range: 500 to 9000 m/s