Body Piercing Calipers - The one true way to get an accurate measurement of body jewelry is with piercing calipers. In addition to standard jewelry calipers, we offer digital calipers to make it even easier for you to measure the gauge, length, inner diameter, and other dimensions of body jewelry. Keep a pair of body piercing calipers in your piercing shop so that you can accurately measure clients for jewelry before piercing them, and so you can properly measure clients\' body jewelry when they ask for size specs before purchasing new jewelry.