Dial Comparator Range +/-0.0020 in Graduations 0.0005 in IP Rating Not Rated Long Form Calibration Certificate No Back Type Non-Removable Flat Back Dial Color White Dial Reading 20-0-20 Dial Size 0.84375 in Dimension Type Inch Included Certification Certificate of Conformance Maximum Measurement - Inch 0.02 in Minimum Measurement - Inch 0.0005 in Operation Type Mechanical Accuracy +/-0.00005 in Bearing Type Jeweled Contact Point Dia 0.125 in Contact Point Shape Ball