Used for holding rings while pounding, shaping, sizing and straightening them. Also for gauging and holding rings while setting stones. Made of hardened solid aluminum metal. Mandrels are engraved with ring sizes from 1 to 15, graduated in 1/2 sizes with markings on 1/4 sizes.
Devardi Glass Lampwork Stainless Steel Mandrels, THIMBLE MAKER
Deluxe Ring Gauge Kit with Mandrel
Premium Steel Ring Mandrel Graduated 1-15 Marked Sizes
Deluxe Ring Gauge Kit with Mandrel
Devardi Glass Lampwork Stainless Steel Mandrels, THIMBLE MAKER
Ring Sizing Chart
Ring Mandrel Sizing Tool USA and European Ring Sizes Aluminum
Professional Steel Ring Mandrel (Grooved & Graduated)
Esslinger and Company
Expanding Ring Mandrel with Hex Allen Key – Large
Ring Sizer Measuring Tool Finger Ring Mandrel, EEEkit Ring Gauge
Stainless Steel Ring Enlarger Stick Mandrel Sizer Tool for Jewelry
Ring Mandrel Sizer Finger Sizing Measuring Stick