-Ring MandrelOverall length is 12” (30 cm). -Ungrooved and it will provide you with precise measurements. -Made of steel. -Includes gradual taper for sizes 1 to 15.
-Finger ring size gaugesis made from solid metal. -Used by jewelers to determine finger size for ring fitting. -Features 29 inside half-round rings with 6 mm widths. -Marked with U.S. Standard sizes 1-15.
