You won't find another ruler with OLFA's patented compass pivot-point angles. You will, however, find that this OLFA® ruler makes any project easier, whether you're working with fabrics, paper or other materials. Good For: precise measurements and cutting angles for sewing and quilting. Frosted acrylic surface allows black imprinted numbers to be read effortlessly. Frosted surface is non-slip for extra stability and safety when cutting. Designed for accuracy and precision with grid lines marked in a ⅛", ¼", ½" and 1" increments. Features a compass with pivot-point angles for 15, 30, 45, 60 and 90 degree cuts.