3 3/4in x 11 1/2in. The Gypsy Gripper's suction cups willwork with smooth surface rulers that are at least 4in wide,including most rectangle, square or triangle shapes. Useit with just one end attached on square or trianglerulers and it still grips perfectly.
Mary's Quilt Market
325 Main Street Cleverly Hidden in the Arthur Mall Arthur, ND 58006