This is a standard, metric dial indicator. It offers you the following benefits: Bezel clamp and lifting lever (optional) can be attached to either right or left side. They can be easily installed and removed without tools. No through screw holes on the frame and secure adhesion between the bezel and the crystal as well as the use of an O-ring prevents water or oil penetration. Features No. with Lugback plate: 2052S-19 Range: 30mm Rangeper rev.: 1 mm Graduation: 0,01 mm Scale: 0-100 (100-0) Stem: 8 mm Mass: 143g Contact point: Carbide tipped, thread: M 2.5 x 0.45 mm Delivered: with certificate of inspection, limit indicators Continuous dial: Yes Shockproof: Yes Jeweled bearing: Yes Cushioned end point: Yes Digital/Analog: Analog Any 1/10revolution: 7µm Any 1revolution: 12µm Any 1/2revolution: 11µm Range: 25µm Repeatability: 3µm Hysteresis error: 5µm Inch-Metric: Metric