I don't know. That is why when ever Joann's or Hancock Fabrick has their 50% off sale that is the area that I head; the notions section. Most of the material I can handle but to get good measuring items it's expensive. Now I hear that you should also stick to the same line because the measurements aren't always the same with different brands of rulers. So if you start measuring a project with a certain ruler keep the same line thru out the whole project. I think it's just another way to get our money and drive us crazy.