Happy Hour - Silver Ring Sizer Gauge Sizes 2 to15 in 1/4 Size Increments Metal Finger Gauge Measuring Stick Finger Sizing Measuring Stick Metal Ring Mandrel, Exact Ring Size Helper + 31 pcs Ring Sizer There are 4 kinds of measurement on the stick , 1-15 is American type Great for Jewellers, Ring Makers, Hobbyists, Craftsman etc Grooved on one side to prevent chipped stones There are 4 kinds of measurement on the stick , 1-15 is American type. Great for use on glass showcases