OLFA, Non-Slip, Frosted Advantage Acrylic Rulers are not your ordinary rulers! OLFA's rulers are non-slip for stable and safe cutting and frosted with black grid lines for clarity on light- and dark-material. Ideal sized to travel with. Cut and measure accurate borders, patchwork, strips, and binding. Easy to read number and grid lines with 1" grids and 1/8" increments ensure precise measurements. Unique patented Pivot Point angle markings to easily make 15, 30, 45, 60 and 90 degree cuts. For right-and left-handed use.