100 or 2mm in one revolution. Sharp, black graduations on the satin chrome finished bar every. Fine adjustment thumb roll for precision measurements.Vertical bar is back from the edge of the nose for better stability. Hardened, ground, and lapped base with finger grooves for control and ease of movement. Lock screw for dial and block to hold the slide in position. The item "Starrett 250-6 Dial Height Gage LAST ONE IN STOCK" is in sale since Wednesday, November 4, 2020. This item is in the category "Business & Industrial\CNC, Metalworking & Manufacturing\Workholding & Toolholding\Workholding\Other Workholding". The seller is "discount_tool" and is located in Chicago, Illinois. This item can be shipped worldwide.