6" Stainless Steel Digital Display Fractional Caliper High Precision LCD Caliper 150mm/mm/inch Gauge Measuring Tool, How To: The electronic digital gauge provides instant, accurate readings of internal, external, step, and depth measurements with an accuracy of 0.001". The Metric/SAE Transfer Switch automatically converts measurements to inches or millimeters at the touch of a button. Adjustable thumb provides tension for optimal movement and locking of the jaws in place. Feature:Metric/Imperial/Fractional, 3 Displays, Multi-FunctionMetrics/SAE SwitchZero Calibration SwitchAuto On/OffEasy To Read LCD DisplayDurable Stainless Steel ConstructionRange: 0.01mm to 150mm/200mmBattery: LR44 1.5V BatteryPackage Includes:1 Digital Caliper