Omnigrid Quilter s Ruler. This ruler was made from a durable premium quality acrylic plastic and laser cut for a smooth edge that allows for easier deeper cutting of fabric layers. The patented double line effect is printed in black and yellow which allows the used to see the grid on both dark and light fabrics. Designed for left and right handed users. Used for sewing, scrapbooking, crafts, weaving and more! Has 30, 45 and 60 degree angle lines marked for easy alignment of fabric. This Ruler Measures 9-1/2" x 9-1/2".