Groove Micrometer, Rotating Spindle 50-75mm, 12,7mm Flange 146-124 Mitutoyo

A Mitutoyo non-digital tubular micrometer equipped with concentric, disc-shaped anvils for making measurements inside holes, such as width, depth and location of grooves and projections. Separate graduations for inside and outside measurements avoid need for corrections for anvil thickness. A ratchet stop guarantees repeatable measurement.