Nonslip for stable and safe cutting and frosted for clarity on light anddark material. 1" grid markings with 12", 14" and 18" 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 rightand lefthanded use. 6"x12" size is perfect traveling with use for cutting and measuring accurate borders, patchwork, strips and binding.