For those who might be interested buying the Proportional Scale tool, I went to Office Max/Depot, a sewing store as well as a crafts store today. Office Max/Depot knew what I was describing because of their printing section but didn't sell them, the sewing store (not JAF) and the crafts store didn't know what they were, so I turned to good 'ol Amazon. What I found is the Golden Threads Proportional Scale Quilters Assist. I ordered one from one of the vendors listed for $4.59 plus $4.99 shipping. While it may not help with Quilters Cache scaling, I wanted one because I have seen quilt blocks I would like to do, but I wanted to change the size.