SADT SA40EZ is the miniaturized Portable Ultrasonic Thickness Gauge that can measure Wall Thickness and velocity. This compact intelligent gauge is designed to measure the thickness of metallic and non-metallic materials such as steel, aluminum, brass, silver, oil, acrylic resin, glycerin, water glass and etc. It is quite versatile model which can be easily equipped with the optional low & high frequency probes as well as a high temperature probes.