Cut 24 of these 15 degrees together to create a complete circle together; 12 to create a semicircle; Or 6 to create a quarter of a circle. Create fans, dresde plates (Dresden Plate), etc. Up to a finite size of 18in (45 cm). The rule easily slides on the fabric until pressure is applied. Then, our exclusive coating keeps the fabric in place during the cut, eliminating the shifts and the missed cuts! Delivered with English instructions completely illustrated or scan the QR code printed on the rule to see a video demonstration. - 3in x 9-1/2in (or 7.62 cm x 24.13 cm).