This multi-purpose House ruler is designed to cut a multitude of shapes. Half-square triangles; quarter-square triangles; trapezoids; parallelograms; diamonds from squares and rectangles; “house” shapes; “barn” shapes are fast, easy and accurate to cut with this one ruler. 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! It comes with fully illustrated step by step instructions or scan the QR Code printed on the ruler to view a video demonstration. Creative Grids Rulers have a MAP (Minimum Advertised Pricing) Policy. Please do not advertise them for less than the suggested retail.