My #37 Patchwork or Quarter-inch Foot Makes Beautiful Understitching

Description

I am not a quilter; I am a seamstress. I just purchased the #37 Patchwork or Quarter-inch Foot a couple weeks ago. It has immediately become a valuable tool to make perfectly beautiful understitching. I can also use it to make the original seam that is understitched by using the seam allowance guidelines on the throat plate. But, the foot itself guides a straight, unwavering line of understitching.