Creative Grids 15 Degree Triangle RulerCreative Grids 15 Degree Triangle Ruler:Sew together 24 of these 15 degree triangles to create a complete circle; 12 to create a half-circle; or 6 to create a quarter-circle. Create Fans, Dresden Plates, etc. up to a finished size of 18 inches.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! Want a larger size? This 15 degree triangle also come in a 24-1/2 inch size (Item CGREU1).Total Size – 3in x 9-1/2in