The Creative Grids Circle Savvy 11-3/4 inch x 18-1/2 inch Quilt Ruler, designed by Karla Alexander, cuts circles, semi-circles, and quarter-circles from 3 to 15-1/2 inches and every 1/2 inch in between. It can be used in a number of techniques: fusible applique, piecing and turned-edge applique. Circle Savvy comes with fully illustrated step by step instructions or scan the QR Code printed on the ruler to view a video demonstration. 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!