OLFA, Non-Slip, Frosted Advantage Acrylic Rulers are not your ordinary rulers! OLFA’s acrylic rulers are non-slip for stable and safe cutting and frosted with black grid lines for clarity on light- and dark-material. "The Essential's 6" x 24" and is the ideal ruler for all of your cutting needs. Cut and measure accurate borders and patchwork, as well as perfect bindings with our easy to read numbers and grid lines - 1" grid with 1/2", 1/4" and 1/8" increments for precise measurements. Unique patented Pivot Point angle markings to easily make 15°, 30°, 45°, 60° and 90° cuts. For right-and left-handed use. Available in 10 sizes to accommodate all your crafting needs; no matter the project, we’ve got you covered.