Mechanical Outside Micrometer, Range 0 in to 1 in, Resolution 0.0001 in, Accuracy +/-0.00016 in, Long Form Calibration Certificate No, Dimension Type Inch, Jaw Depth 1.102 in, Mechanical Display Type Vernier, Operation Type Mechanical, Thimble Type Ratchet, Anvil Material Carbide, Anvil Shape Flat, Lock Nut Type Lock Nut, Maximum Measurement - Inch 1 in, Minimum Measurement - Inch 0 in, Rotating Spindle (Yes/No) Yes, Spindle Diameter 0.256 in, Spindle Material Steel, Spindle Shape Flat