Non-slip for stable and safe cutting and frosted for clarity on light- and-dark material. 1" grid markings with 1/2", 1/4" and 1/8" increments for accuracy. Unique patented Pivot Point angle markings to easily make 15°, 30°, 45°, 60° and 90° cuts. Use for precise measurements and cutting angles during sewing and quilting applications. For right-and left-handed use. 6"x24" size is perfect for cutting and measuring accurate borders, patchwork, strips and binding.