Digital Groove Micrometer Range 0 in to 0.001 in (Outside) 0.055 in to 1.05 in (Inside) Resolution 0.001 in Accuracy +/-0.0004 in SPC Output No Long Form Calibration Certificate No Anvil Shape Flat Dimension Type Inch Operation Type Mechanical Thimble Type Ratchet Maximum Measurement - Inch 0.001 in 1.05 in Minimum Measurement - Inch 0 in 0.055 in Rotating Spindle (Yes/No) No Spindle Flange Spindle Diameter 18 mm