... to use, high accuracy, hand-held Ultrasonic Thickness Gauge. It uses the most advanced microprocessor and ultrasonic ... both millimeter and inch), ease of operation, wide measuring range, low power consumption(with normal AA batteries). These ... to five values Standard Accessories ItemsQtyUM-1(main gauge unit)1Standard Probe1Coupling paste1Operation Manual1Four Level Calibration BlockOptionalAlkaline ...