Ruler &ndash; Adhesive Backed Decal on a Roll &ndash; Fractional/Metric &ndash; 4 Inch (10 Centimeter) Long &ndash; Left to Right &ndash; 200 per Roll &ndash; Gray Each ruler decal measures 4 inches on one side and 10 centimeters on the other. Decals are approximately 1 inch wide by 4 3/8 inches long. Every roll contains x200 peel-and-stick rulers. Writing space on each unit makes them useful for labeling, identifying, and referencing. Non-Glare surface. Adhesive is both high-tack and decals are removable without residue.