The DC-2000C / DC-2020C Ultrasonic Thickness Gauge is Time's basic readout unit with automatic probe recognition, automatic zeroing and a larger, more easily read LCD. This instrument can measure with very high resolution (0.01 mm or 0.001 inches) the thickness of metallic and non-metallic materials such as steel, aluminum, titanium, plastics, ceramics, glass and any other good ultrasonic wave conductor. The DC-2000C / DC-2020C accurately displays readings in either inches or millimeters.