Very fast, easy and precise! Make four flying geese at a time - the cutting table printed on the rule works for two different methods! Or, oversize your favorite method to make Flying Geese, then use the ultimate Flying Geese tool to cut in perfection. Create eight finished block sizes from 2.5 x 5.1 cm up to 10.2 x 20, 3 cm - The cutting requirements for each size are printed directly on the rule. Or, use your favorite method and create oversized units. Then cut them to perfection. The rule slides easily on the fabric until pressure is applied. Then, our exclusive coating keeps the fabric in place during the cut, eliminating the landslides and the missed cuts! The rule is delivered with English E Step instructions fully illustrated or scan the QR code printed on the rule to see a video demonstration .Tail of the rule: 8-1/2in x 8-1/2in (i.e. 21.59 cm x 21.59 cm).