This economical and reusable multi-size adjustable finger gauge is ideal for determining the ring size of anyone. It saves time by helping to avoid ordering the wrong ring size. You simply adjust the sizer to fit. The plastic finger gauge measures U.S. sizes 1–17 in half-size increments; the increments are clearly marked.
** Keep in mind that this sizer is a little bit wider than most bands. A thin band will fit a little bit looser