Make your sewing and crafting experience more enjoyable with the Omnigrid Square Quilting Ruler. The yellow and black marking on this ruler's patented double-line effect lets you spot the gird irrespective of whether you are working on a light or dark fabric. Made with high-quality acrylic plastic and laser cut for accuracy, this durable quilting square allows deeper cutting of fabric. To enable the easy arrangement of fabric, the 9.5 x 9.5-inch quilting ruler comes with 30-degree, 45-degree and 60-degree angle lines.