Creative Grids 6-1/2" x 12-1/2" Left-Handed Quilting Ruler features the same markings as the original ruler, but as a mirror image to make numbers easier to read for left-handed quilters! Black and white markings are printed in 1” grids and marked in ¼” and ?” increments. Horizontal and vertical lines clearly show the center of the ruler, and 45-degree diagonal lines make trimming half-square triangles easy and accurate. The ruler slides over fabric until pressure is applied. Then, its grip feature holds the fabric in place while cutting, eliminating slipping and miscuts.