The Extech TKG250 is a digital ultrasonic thickness gauge with data logger with color waveform function. This thickness measuring system in a compact, handy and robust housing is ideal for use on site. Ultrasonic technology enables non-destructive thickness measurement of steel components in particular. Up to 100,000 readings can be stored and exported to Excel® for further analysis. Complete with protective holster, 2 oz bottle of coolant, 2 AA batteries, 5 MHz transducer, hard case, USB cable and exporter software.