I saw these rulers in action at a quilt show in SLC---they were pretty cool. If I would have driven instead of flown, I would have purchased as they wouldn't fit into my carry on and I was afraid what might happen to them if I just carried them onto the plane. I was thinking I would be interested in the 10" and the 2 1/2", but the more I think about it, I can see me using the 2 1/2" 3 1/2" 4 1/2" as well as the 10". If you look at the website,(which I agree is not very good), you will find the shows he will be at. I hope to purchase these sometime in the near future.