This 5" x 5" non-slip quilting ruler by Omnigrid is an essential tool for any bag maker’s studio. This size is especially useful for marking boxed corners. It is transparent neon green with easy-to-read black lines, a right and left-hand numbering system, and 1/8" markings for precise measurements. Use this ruler with a fabric marking tool & on a self-healing cutting mat for cutting fabric and leather.