You can easily work with it on a longarm or sit-down quilting machine. The 4-N-1 Machine Quilting Ruler Mini is great for machine quilting curves, small curves, or straight lines. Designed by professional machine quilter Natalia Bonner. The ruler measures 7" total length by 4.75" total width. The straight-line edge measures 6". The small curves on the sides are fabulous for multiple curved line designs. The ruler is made from high-quality acrylic and measures .25" thick.