Creative Grids 4.5" Left-Handed Quilting Square Ruler features easy to read black and white markings, now reversed from the original to make numbers easier to read for left-handed quilters. Just like the original, it has a 1" grid with 0.125" and 0.25" increments. Use numerical white dots and 0.25" grip sides to cut whole inches. Turn around to use the 0.5" grip side numerical black dots to add the seam allowance. Gripper holds fabric while cutting.