The zipper will be sewn in straight and the edges topstitched precisely
Zipper foot with guide #14 is suitable for the precise, professional insertion of zippers. It resembles standard Zipper foot #4, but features an added bar across the top of the foot which serves as a guide.
Owing to its wavy shape, this adjustable guide rides right over the coils of the zipper. The result is a neat, evenly inserted zipper.
And with its ability to produce perfectly parallel lines of straight topstitching, Zipper foot with guide #14 is is also a useful aid when edgestitching.