The Prym Omnigrid rulers in a triangle shape are an essential tool for patchwork and quilting, quickly and consistently allowing you to cut your fabric to size. Each ruler is transparent with both black and yellow grid markings, making it possible to work on all kinds and colours of fabric! Made from hard-wearing plastic, these rulers are scratch-resistant, ensuring your gridlines last well into the future. The Prym Omnigrid rulers are available in ¼ square and ½ square sizes.