The Janome Sliding Buttonhole Foot 200123006 is used to create perfectly aligned buttonholes with a four-step buttonhole machine. Sliding plate under foot has conveniently spaced markings to start and stop your buttonhole at precisely the correct point.
 
How to use the Sliding Buttonhole foot
Carefully mark the buttonhole length on your fabric.
Place the fabric under the foot and follow the buttonhole instructions in your owner's manual.
Move the slider forward so that the top mark on the slider meets the start mark.
Line up the markings on the foot with the top of the mark on the fabric.
 
For Janome Front Loaders Category A.