Mitutoyo 368-917 Holtest Complete Unit Set, .5-.8" Range, .0002" Graduation

Item Description Range: .5-.65", .65-8" Graduation: .0002" Accuracy: ±.0001" Setting rings .65" dia. With extension rod These Holtests are versatile, self-centering three-point internal micrometers for the accurate and efficient direct-measurement of internal diameters. Three anvils, evenly spaced at 120° apart, contact the internal wall surfaces and find true alignment with the axis of the bore for accurate ID measurement TiN-coated measuring contact points provide excellent durability and impact resistance and allow the instrument to measure to the bottom of a blind hole With Ratchet Stop for constant force Supplied in fitted plastic case