Quick Points Ruler websiteI already had one of these rulers. It comes in several sizes but not knowing anything about it when I bought it, I'd chosen the "middle" size. At market, Janet Platt (the inventor) had a booth and of course LOTS of projects on which she'd used the prairie points in several different ways. I could hardly wait to get home to try it! Here's the ruler and a pic of a quick pillowcase I made to try out the ric-rac part.