Digital Interchangeable Anvil Micrometer Range 20 in to 24 in 508 to 609 mm Resolution 0.0001 in/0.001 mm IP Rating Not Rated SPC Output Yes Anvil Material Steel Lock Nut Type Ring Maximum Measurement - Inch 24 in Maximum Measurement - mm 609 mm Minimum Measurement - Inch 20 in Minimum Measurement - mm 508 mm Spindle Material Steel