The Multi-Size 2 Peaks in 1 Triangle features the unique keyhole cut-out concept that sets this two-in-one ruler apart and by simply rotating it you can create many blocks with minimum fuss and wastage. Cut tall and side triangles for triangle within a square blocks and half-rectangles from 1″ up to 6″ finished and all the half measurements in between. Markings show finished size and indicates strip widths and features the unique non-slip grip for easy accurate cutting. Ruler comes with fully illustrated step by step instructions. Click the video button below to see Nicky Lintott demonstrate how easy it is to use. Features in Pam and Nicky Lintott book Quick Quilts with Rulers.