The Add-A-Quarter 6-inch Pink Ruler from CM Designs combines the speed of rotary cutting quilt pieces with the accuracy of using templates. Once your templates are made, the Add-A-Quarter, with its specially designed lip, will automatically add the customary 1/4" seam allowance to any straight angle and provide a straight edge for your rotary cutter. Reduces time and effort and is invaluable for both hand and machine piecing. Also good for trimming off the excess fabric for your 1/4" seam allowance. Cuts multiple layers, prevents template shaving and cuts at any straight angle. Perfect for Paper Piecing