Omnigrip by Omnigrid Non-Slip Ruler, 4" x 14" Omnigrip Non-Slip Quilter's Ruler is made especially for quilting sewing and crafting projects Can be used with rotary cutters or straight edge blades Made with a unique numbering and angle system that is sure to help with your projects For right or left handed Ruler measures: 4-inch by 14-inch