1.Sound Speed Range up to 9999m/s 2.Display resolution 0.1 mm 3.Handheld and robust DYNAMETERS Ultrasonic Thickness gauge is used for measuring the thickness of materials where access to only one side of the test piece is available for many different materials including steel, cast iron, aluminum, red copper, brass, zinc, quartz glass, polyethylene PVC, gray cast iron, nodular cast iron and other ...