Mechanical Depth Micrometer Range 0 in to 6 in Resolution 0.001 in Accuracy +/-0.00012 in Long Form Calibration Certificate No Base Length 4 in Base Style Full Dimension Type Inch Included Certification No Mechanical Display Type None Number of Measuring Rods 6 Operation Type Mechanical Rod Diameter 0.177 in Anvil Material Steel Anvil Shape Flat Case Included Yes Features Better Rod Accuracy Includes Rods with Flat End Lock Nut Type Screw Maximum Measurement - Inch 6 in