Dial Comparator, Range +/-50 microns, Graduations 1 micron, IP Rating Not Rated, Long Form Calibration Certificate No, Back Type Non-Removable Flat Back, Dial Color Yellow, Dial Reading 50-0-50, Dial Size 0.84375 in, Dimension Type Micron, Included Certification Certificate of Conformance, Maximum Measurement - Micrometers +/-50 micron, Maximum Measurement - Inch 0.05 in, Operation Type Mechanical, Accuracy +/-1 micron, Bearing Type Jeweled, Contact Point Dia. 0.125 in, Contact Point Shape Ball