iGaging IP65 1" Electronic Micrometer Hybrid + ABSOLUTE Origin IP54 6" Digital Electronic Caliper Resolution Caliper: 0.0005 "/0.01mm Micrometer: 0.00005"/0.001mm Range Caliper: 6"/150mm Micrometer: 1"/25mm Caliper: IP54 Micrometer IP65 Protection rating (Humidity and dust resistance )