Frosted Advantage Exact Measurements The OLFA QR-1x12, 1.25" x 12" Frosted Acrylic Ruler is the craft ruler you've been looking for. Frosted Advantage acrylic rulers feature everything you need in a textile or quilting ruler, with non-slip backing and precise measurements for the perfect cut every time. Designed for accuracy and precision with grid lines marked in 1/8?, 1/4?, 1/2? and 1? increments. Frosted acrylic surface allows black imprinted numbers to be read effortlessly.