Mechanical Depth Micrometer Range 0 in to 4 in Resolution 0.001 in Accuracy +/-0.00015 in +/-0.003 mm Long Form Calibration Certificate No Base Length 4 in Base Style Full Dimension Type Inch Mechanical Display Type None Number of Measuring Rods 4 Operation Type Mechanical Rod Diameter 4 mm Anvil Material Steel Anvil Shape Flat Case Included Yes Case Type Plastic