Helen G (heleng at dreamscape.com) says: "this is for seam allowance. It screws to the bed of the machine. Measure from the needle to the right and screw it down where you want it. It works great."
P Thompsen (PThomp9719 at aol.com) adds: Slide fabric along edge of attachment for easy, even seams without watching those little marks on the throat plate. One of my most often used attachments.
-- Anonymous 2006-12-01 02:48 UTC