Westalee Design’s Ruler Foot was one of the first feet explicitly designed to be used on almost all domestic sewing machines, regardless of age or make. Quilt intricate designs using this foot when combined with Westalee’s template rulers. Choose from three shank types, low, medium, or high. If you need help determining the difference between low shank and high shank, lower your foot and then measure the height of the center of the hole for the screw to the needle plate. If it measures 1/2″ it is low shank and if it measures 1″ it is high shank.