TRUE SIZE ALLUMINUM RING MANDREL 1/4 SIZES 1-16 w/3 Three optical glass lenses are

Three optical glass lenses are bonded together to form a compound lens which provides sharp very distinct magnified images

Digital display eliminates eye fatigue when measuring stones over prolonged periods

Blocks are 3-1/2" x 2-3/8"

．Speed (Speed): 3000rpm

TRUE SIZE ALLUMINUM RING MANDREL 1/4 SIZES 1-16 w/3 Three optical glass lenses areThe True Size ring mandrels are precision made and individually calibrated to match with the True Size Precision ring sizing system. When used with the True Size ring sizing system, you can be assured of correct sizing from the front counter to the jewelers bench, eliminating costly ring sizing errors. The True Size Ring Mandrels are made from hardened steel and then laser etched in 1 4 sizes from 1 16.