IP65 Rated Protection Electronic Micrometer Features include... 1-2" / 25-50mm Measuring Range 0.00005" / 0.001mm Resolution 0.0002" / 0.004mm Accuracy 2mm feeding of spindle for every thimble revolution Auto on / off Absolute & Incremental measuring modes Ratchet thimble Includes Certificate of Calibration Furnished in fitted case