The Starrett 655-441J Dial Indicator features a hardened steel gear train and jewel bearings. Supplied with a lug-on-center back, anti-magnetic mechanism and its balanced, tapered hands are easy to follow. The unbreakable crystal face is non-reflecting and 2-3-4". This model has a Range of 1.000", .001" Graduations and a 0-100 Dial Reading with .100" Range one Revolution and .375" Stem diameter.