The Adjustable Seam Guide attaches around the presser foot shank and works with just about any presser foot. There are two adjustment screws so that you can slide the guide 1 1/2" to the right of the needle along the ruled bar for stitching along an edge or a previous row of stitching. What makes the Janome Adjustable Seam Guide unique is that you can also center the guide in front of the needle for perfect stitching in the ditch or bridging two fabric edges together. Think of all of the possibilities such as:
Stitch in the Ditch quilting
Pintucks
Hems
Sewing laces together
Bridging
Channel quilting
More accurate seam allowances for beginners