Mitutoyo Digital V-Anvil Micrometer Measures the outside diameter of cutting tools (such as taps, reamers, end mills) with an odd number of flutes. Specifications include... .4 - 1" / 10.16 - 25.4mm Measuring Range 0.00005" / 0.001mm + 0.0002" Accuracy Features include... Ratchet Stop for constant force Supplied with setting standard V-anvils with centerline groove. They are useful for measuring pitch diameters of taps which have a small diameter by using single-wire method. With SPC output Supplied in fitted plastic case