Thicken Carbide Head: made of tungsten steel, hard carbide
Wear Resistant :Surface Powder coated baked finish, for long time use
Easy reading: Engraved graduations on the micrometer barrel clear
Ratchet-stop Thimble Design:prevent screwing too tight, make sure precise measurement.
Package Include:Accuracy of 0.0001" micrometer set: 0 to 1", 1" to 2", 2" to 3", 3" to 4",3 pcs calibration standards, 1 pc spanner wrench, and a fitted case.