Mark your sewing machine for Perfect Piecing every time! Align your sewing machines' needle simply & easily by placing the guide under the machine's foot with ruler side edge along right edge of foot. Adjust needle so when it is lowered, it goes through the hole for the seam size you want. The mitered end is handy for piecing binding strips. Seam Sizes on ruler range from 1/4", 3/8", 1/2", 5/8" and 3/4".
Measures 3-1/2" x 1". Made of Plastic