This SUPER EZQuilting “Is It Square? Tool” by Marti Michell measures 10.5″ x 10.5″ and features helpful angle markings for 22.5°, 45°, 60°, and 90° angles. It is designed to assist in precise quilting measurements and angles, making it a great addition to any quilting toolkit. The tool is made of clear durable plastic with blue printed measurement guides and is in very good condition with minimal signs of use.