Digital Outside Micrometer Range 21 in to 22 in 533 to 559 mm Resolution 0.0001 in/0.001 mm IP Rating Not Rated SPC Output Yes Thimble Type Friction Anvil Material Carbide Includes Case Data Transmission LCD Digital Display Lock Nut Type Lever Maximum Measurement - Inch 22 in Maximum Measurement - mm 559 mm Minimum Measurement - Inch 21 in Minimum Measurement - mm 533 mm Spindle Material Carbide