Creative Grids multi-purpose House ruler is designed to cut a multitude of shapes. “House” shapes, “barn” shapes are fast, easy and accurate to cut with this one ruler. Use it for half-square triangles, quarter-square triangles, trapezoids, parallelograms, diamonds from squares and rectangles. The ruler slides easily over the fabric until pressure is applied. Then, 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.