T-582 Mark - A - Size
This Mark-A-Size ring gauge makes it easy to accurately reduce or enlarge ring sizes up to three full sizes.
The set includes 12 hardened steel blades with precision-machined points in quarter-size increments.
To reduce a ring size, mark the width of the shank to be removed; to enlarge a ring, mark the amount of stock needed to add to the shank.
Hardened steel with sharp edges.
Fan folds when not in use to protect edges.