DRITZ-OmniAnge Wedge Ruler. For use with rotary cutters and straight edge blades. Create 9; 10; 18; 22-1/2; 36 and 45 degree wedges using angle cuts. Designed for left and right handed users. Used for sewing; scrapbooking; crafts; weaving and more! This Ruler Measures 24x6 inches.