Fancy asked for this chart on the FAQ board. Since I was not authorized to update there, I created a new thread instead. Got this from Stuller's Findings Catalog. Hope this helps (sorry that I had circled 13x8, they were the measurements closet to my pear).
cflutist, what a great resource! Thanks for sharing it. I wonder if Leonid would be open to pinning it up so it's always at the top for others to see. I seem to recall seeing questions posted about this before.