V-Anvil Micrometer For measure the diameter of 5 Fluted Tools Such as Taps, Reamers and End Mills. Features Include... 0.09" - 1.00" Measuring Range 0.0001" Graduations + 0.0002" Accuracy 5 Flutes Forged steel frame with enamel finish Ratchet thimble Spindle Lock Furnished in fitted case