Mechanical Depth Micrometer Range 0 in to 9 in Resolution 0.001 in Accuracy +/-0.0001 in Long Form Calibration Certificate No Base Length 2 1/2 in Base Style Full Dimension Type Inch Included Certification No Mechanical Display Type None Number of Measuring Rods 9 Operation Type Mechanical Rod Diameter 1/8 in Anvil Material Steel Anvil Shape Round Case Included Yes Case Type Padded Case Features Combination Ratchet and Speeder for Uniform Pressure and Quicker Adjustment