Allstar 0. 001 inch to 1 inch - 0. 001 Increment Dial Indicator with Magnetic Base comes with a magnetic base. The dial indicator measures from . 001 inch through 1 inch in . 001 inches increments. The magnetic base should be used for mounting when degreeing a camshaft. It can also be used for checking the crankshaft end play, deck heights, dome heights, transmission end play or ring and pinion backlash. The universal magnetic base may be mounted anywhere. The dial indicator also has a shockproof dial. It is backed by a 90-day limited factory and sold individually.