Adjustable-Collar Mechanical Outside Micrometer Range 40 in to 48 in Resolution 0.0005 in Accuracy +/-0.00087 in Long Form Calibration Certificate No Dimension Type Inch Jaw Depth 25.394 in Mechanical Display Type Vernier Operation Type Mechanical Thimble Type Ratchet Anvil Material Carbide Anvil Shape Flat Includes Adjustable Collar Lock Nut Type Lock Nut Maximum Measurement - Inch 48 in Minimum Measurement - Inch 40 in Rotating Spindle (Yes/No) Yes Spindle Diameter 0.315 in