I met Mr. Kleibacker while studying Fashion Design at Drexel University in Philadelphia where he was a visiting professor in the early 1980's. As an older student sewing nearly 20 years, I was well familiar with sewing techniques but not couture work. What an opportunity to learn from such a talented man. I enrolled seeking tailoring techniques and graduated with a wealth of knowledge that I continue to use today as a couturier.
Barbara

The foot is a ruffler. I still have mine in the original box. While it is called a ruffler, it really is a pleater. The foot is able to pleat a single layer or simultaneously pleat and attach the single layer to a second layer. In other words, it is able to pleat(ruffle) a skirt to a bodice all at once. Stitch length determines the fullness.