State of the art ultrasonic technology allows you to obtain ultra precise thickness measurements and store them to memory. This digital tester is capable of reading wall thickness down to 0.1mm with a super high adjustable resolution of up to 0.001mm. This dynamic sonic gauge is designed to measure the thickness of metallic and non-metallic materials such as steel, aluminium, titanium, plastics, ceramics, glass and any other good ultrasonic wage conductor as long as it has parallel top and bottom surfaces. The UM-3 will accurately display reading in either inch or millimeter after a simple calibration to a known thickness or sound velocity.