Scrapbookers and quilters alike will love this ruler. The OLFA ruler has patented compass pivot-point angle markings. And its frosted surface is more than just attractive; it’s non-slip to eliminate frustration and promote safe cutting. 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 “, “, ” and 1″ increments. Features a compass with pivot-point angles for 15, 30, 45, 60 and 90 degree cuts.