Meet Omnigrip, the non-slip, patented Omnigrip patchwork ruler from Prym. Available in various sizes with inch scale. The special green color of the markings on the underside prevents the ruler from slipping on the fabric, which provides greater safety in guiding the rotary cutter along the ruler. As with all Omnigrid rulers, the laser print is scratch resistant on the underside of the ruler and prevents visual distortion. Detailed eighth-inch scale markings and 30-, 45- and 60-degree angle markings make this ruler an essential aid for sewing and quilting when using an inch scale.