Ring Size Gages
Just did a quick fix of DrBlackAdder's Ring size thing to fix a problem with the K size band not being on the same Z datum as the rest, thickened them up to model an 8mm wide ring, and I moved some rings around to allow this to fit in my 190mmX190mm build area.
Sizes shown are UK ring sizes. Look online for conversion charts, etc.
I also uploaded individual ring sizes for easy downloading.
Original: http://www.thingiverse.com/thing:25684