Fowler 0-0.5" Economy Electronic Indicator with Bluetooth Features include... 0-0.5" / 12.5mm Measuring Range 0.00005" / 0.001mm Resolution 0.00030" / 0.007mm Accuracy Direct Inch/Metric Conversion Bluetooth Communications Auto Off feature Lug Back and Flat Back Ceramic Ball Contact Point Includes certificate of Calibration Traceable to NIST
