I used this ruler to make a zipper pouch. The tiny pinwheels are super cute, probably because they are so tiny. The downside is that their small size did make them a bit fiddly to sew. The ruler is clearly marked, comes with well written instructions, and has gripper dots stuck to its corners, so it is easy to use. I didn't rate it highly on value, but I think $10 for a tiny piece of plastic with a couple of lines marked on it is kind of crazy, but in my opinion, quilt rulers are just overpriced in general.