This is a face type A dial indicator that is also included in several of our popular test kits. This particular one is separate, its rack and pinion construction is very durable for a long life. Features: * Range: 1.0 in. * Graduations: .001 in. * Continuous forward and reverse reading with revolution counter * Reading: 0-100 * Diameter: 2-1/4 in. * Rack and pinion construction * Lug back * 3/8-inch diameter shank What"s In The Box: * Central Tools 4345 Face Type A Dial Indicator