I think it so frustrating to have to buy the specially sized rulers. I had been looking at pattern for fall table topper and finally bought it without reading the fine print. Turned out that I had to have a 60 degree ruler. I wouldn't have bought it if I had seen that. So now my little table topper cost me probably $30 with fabric and ruler. Plus, I really didn't like using it. I would rather just have the measurements. I'm glad some of you can figure out the math and make templates, I tried but I'm not so good with math.