About the product
- Holes in this gauge are used to measure the sizes of stones in both carats and millimeters.
- Extensions are used to measure the sizes of mountings, also in both carats and millimeters.
- The carat gauge can measure 19 sizes from 1/32 to 4 carat stones in quarter intervals.
- The millimeter gauge can measure 19 sizes from 2 to 11 millimeters in half-millimeter intervals.
- Gauge measures 4x4
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