Hi all,
I think it will be a quick answer on this but I haven’t been able to find an answer elsewhere.
I understand how to use a mandrel to read a ring size on a straight band but I can’t find any guide for a wide band with a tapered back. For example, if I have a ring that’s 20mm at its widest and 10mm at its narrowest, do I read the size from where the narrow or wide side falls on the mandrel?