[Size]: Accuracy:0.001", 0.100" per One Revolution, Micro graduations, wide spacing

[Material]: Made of Stainless steel. Hardened steel beam and jaws with lapped measuring faces. The surface is chromed.

[Advantage]: Shockproof.

[Features]: Adjustable bezel with locking device. The rack keeps gear teeth clean.

[Measurement Method]: 4-way measurements: inside, outside, depth, and step length.