By designer Deb Heatherly, this Cat's Cradle tool will leave you with perfect triangles in every block. A must have tool when creating the Cat's Cradle block. Cutting requirements, for six different sized blocks, are printed directly on the ruler. Finished block sizes range from 1 1/2 to 4 inches. Equipped with Creative Grid's exclusive grip, this 7" x 7" ruler slides easily on fabric yet stays in place when pressure is applied. Use the included instructions or scan the QR code to view a video demonstration. Made in the USA.