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Jewelers Ring Sizing Mandrel photo
Jeweler's Ring sizing Mandrel

Standard ring sizes 1 to 16 in 1/4 increments calibrated hardened tool steel mandrel.

Marked "RIO USA" Rio Grande Item Number: 112366
Also in flat and grooved, square and rectangular.

Like swage blocks many tools cross over from one craft to another with the significant difference being size. Jewelers mandrels are used the same as blacksmiths cones for truing and sizing metal rings. Those like the one above are graduated in standard ring sizes.

William Dixon Catalog Ring Mandrel Catalog Pages:
1926 Dixon jewelers tool catalog pages. more

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