Add A Quarter Plus 12" Ruler simplifies foundation piecing. One edge is tapered for folding back foundation paper and the other side has a 1/4" lip so you can quickly trim the seam allowance with your rotary cutter. 2" x 12" ruler.

By far our favorite tool for foundation paper-piecing! The specially designed lip on this ruler automatically allows 1/4 inch seam allowance to any angle for your rotary cutter. Great to use when foundation piecing.