Bore Gauge Digital Indicator Series Series 543 Resolution 0.001 mm 0.00005 in 0.0001 in 0.01 mm 0.0005 in Accuracy +/-0.0001 in +/-0.003 mm Range 0 in to 0.5 in Bezel Non Rotating Long Form Calibration Certificate No Features Key Lock Parameter Lock PC-USB Input Analog Bar Fast Measurement Frequency Preset (Up to 3 Values) Tolerance Judgment Peak Detection (Min Only) Inch/mm Conversion Data Output