I, too, don't have a problem with eyeballing my 1/4" seams when I am piecing a quilt--just sew a trial seam, measure it, go back and re-sew watching where the presser foot is as I sew, and I am good to go. I did see one of those "attach it to the bed of your sewing machine" thingys when I went down to Tenn TOGA a few weeks ago, and was amazed, but haven't gone through my junk drawers in my sewing room yet to find one. Maybe later on today, if I ever make myself get up from here and get to work.