Check the listing for details. Creative Grids 11 1/2" Square Ruler Sewing and Quilting Ruler. Condition: New. Listed at 29.99 USD. This 11-1/2 inch square is the perfect companion for anyone who loves to work with the 11-1/2 inch pre-cuts on the market. It features easy-to-read black and white markings printed in 1 inch grids marked in 1/8 inch and 1/4 inch increments. Use the black numbers (printed on white dots) and the 1/4 inch grip sides to cut whole inches. Use the Turn-A-Round feature – designated by the easy to read, numerical white numbers (printed on black dots) and the 1/2 inch grip sides – to add the 1/2 inch seam allowance. A 45 degree angle is printed in black and is used to trim half-square triangles to size. White horizontal and vertical lines are printed on the square so the center of the ruler is easily distinguishable. Use these lines to square up blocks based on four-patches or embroidered and appliqued blocks. The ruler slides easily over the fabric until pressure is applied. Then, the exclusive gripper holds the fabric in place while cutting, eliminating slipping and miss-cuts! Designed by Rachel Cross. Creative Grids products are made in the USA and sold in independent quilt shops only.