Many ring mandrels measure ring sizes differently than the ring
sizers used to measure the customers’ finger, resulting in an
improperly sized ring. One method to avoid this problem is to
purchase several sets of plastic ring sizers. Take apart the sets
of sizers and organize them by finger size in a plastic compartment
box with a snap close lid. Then measure the customers’ finger with
these sizers and place the correct sizer in the job envelope with
the ring to be sized. Then the bench jeweler will have no questions
as to the size to make the ring. When finished, return the ring
sizer to the tray for future use. Brad Simon CMBJ