Non-slip for stable and safe cutting and frosted for clarity on light and dark material. 1 inch grid markings with 1/2 inch, 1/4 inch and 1/8 inch 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 or left-handed use. 6 inch x 12 inch size.