It is the miniaturized ultrasonic thickness gauge that can measure wall thickness and velocity. Our 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 low & high frequency probes as well as a high temperature probe. Welcome to visit our official website : http://www.portable-hardness-tester.com