The Extech TKG150 is a digital ultrasonic thickness gauge with data logger. The compact, robust gauge enables non-destructive thickness measurements. It offers thickness measurements in a compact, handy and robust housing that is ideal for use on site. Ultrasonic technology enables non-destructive thickness measurements of steel components in particular. Complete with protective holster, 2 oz bottle of coolant, 2 AA batteries, 5 MHz transducer, hard case, USB cable and exporter software.