This 4-1/2 inch square is the perfect companion for anyone who loves to work with the 5 inch pre-cuts on the market. The diagonal line makes trimming half-square triangles created with these 5 inch squares a piece of cake. It features easy-to-read black and white markings printed in 1 inch grids marked in 1/8 inch and ¼ inch increments. Use the easy-to-read, black numbers (printed on white dots) and the 1/4 inch grip sides to cut whole inches. The 1/4 inch dashed lines printed on two adjoining sides aid in trimming seam allowances. Use the patented 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. The ruler slides easily over the fabric until pressure is applied. Then, our exclusive gripper holds the fabric in place while cutting, eliminating slipping and miss-cuts!