Buttonhole Foot with Slide #3B makes it a cinch to sew buttonholes of the same length. With presser foot #3B, the desired length is manually set beforehand with the aid of the marking on the scale. This allows perfectly identical buttonholes to be sewn again, until the size is changed. Buttonhole Foot with Slide #3B is therefore ideal for sewing button plackets on garments and home furnishings.