This is a scalloped edging for the doublebed by Dorothy Namanny. On this edge she tells you to do a loose tension for the scallop so that it lays flat. I did that but it does not look too much like scallops. I used a tension 4 and maybe if I went down a number it might have pulled the scallops up. You can do any size scallop by the number of needles that you choose.
Alternatives to ribbing on the Passap #7