【Two Calibration Modes】Basic Calibration and Sound Speed Calibration,The ultrasonic thickness gauge calibration block is close to operation key,with thickness of 4.0 mm,The sound speed in calibration is automatically set as 5900m/s 【High/Low Measurement Limit Alarm 】Set the high and low limit value from 0.039 inch to 8.858 inch(1mm to 225mm),Turn on/off the Audible & Red color alarm that exceeds the limit value of this Digital Ultrasonic Thickness Meter 【Data Storage & 5 Colourful Backlight LCD Display】Digital Ultrasonic Thickness Tester store up to 500 readings and recall function.View the number of data, maximum, minimum, average, etc, Easy to read measurements at all angles with High contrast LCD and backlit brightness with 5 selectable display Color 【Sound Speed Adjustment】User can sel.
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