The 720-2 graduated (also called “displacement”) target is useful for estimating deviations from a straight line when you’re beyond the range of your optical micrometer. Put them on the floor, walls, machinery, instrument stands – just about anywhere (be a little careful, they have an industrial strength adhesive!).
It has “peel-off” type adhesive backing, and comes in packages of 10.
Size: 2.5″ x 2.5″ square
Stock: Matte finish, non-glare polyester
Black on matte white background, graduations on each quadrant read from the center, in 0.050″ increments. Graduations are numbered each 0.200″.