iGaging Bore Gauge 1.4" - 6"/.00005" ABSOLUTE Digital Electronic Indicator Gage Inch/Metric Extreme Accuracy Absolute Encoder Technology digital indicator w/ IP54 protection Measure in Inch or Metric with Auto Conversion - Range 1.4" - 6" or 36mm - 150mm Resolution: 0.00005 / 0.001mm Accuracy: 0.0003 / 0.008mm Repeatability: 0.00005 / 0.001mm Pre-set for master ring and Minimum functions Convenience to indicate measurements whether out of set tolerance or not