Each ruler has a unique non-slip coating that makes for more accurate cutting! The one-inch lines with two sets of corresponding numbers that are placed around the perimeter of the ruler can be read left to right AND right to left which means you never have to lose your place or count backwards! Easy to read lines for marking and measuring your fabric - 1/8”, ¼”, ½” ¾” and 1” markings as well as multiple angles.