After converting the gauge and inside diameters into millimeters, simply multiply the gauge mm x2 then add that to the inside diameter to equal the outside diameter.
Note: Before measuring, make sure the opening of the jumpring is as closed as you can get it. This will help ensure an accurate measurement.
- Michelle Wood, Jewelry-Making Expert
Products sold by Fire Mountain Gems and Beads® are intended for experienced jewelry-makers and designer-artists; children 14 years of age or younger should use these products with adult direction.
Fire Mountain Gems and Beads, Inc. - One Fire Mountain Way, Grants Pass, OR USA
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