90 degree 1.5” Slotted Ruler – There are 5 slots 1.5 inches apart allowing you to stitch double lined Piano Keys down a border accurately and quickly. There are etched lines for easily sliding the template and adding stitch lines at 3/4 inch intervals. This template has a Large slot width. This template is sized for the Gammill Long Arm Hopping Foot. Watch videos at www.terylloy.com for instructions on how to use this template.