Cut angles of 30 and 60 degrees up to a finished height of 12 inch. This 60 -degree equilateral triangle has easy -to -read black and white marks. A 1/4 inch dotted line is printed on each side of the central vertical line so that you can cut 30 degrees triangles that include the seam margin. The rule slides easily on the fabric until a pressure be 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 instructions in English completely illustrated step or scan the QR code printed on the rule to see a video demonstration of these features. This 60-degree equilateral triangle is also available in a size of 8-1/2 inches (CGRT60, see at the bottom of the page). Total stall-12-1/2in x 14-3/4in (i.e. 31.75 cm x 37.46 cm).