Gauges

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the industry's most reliable digital gauge that measures gemstone dimensions with direct conversion to carat weight for round brilliant-cut diamonds.

the industry’s most reliable digital gauge that measures gemstone dimensions with direct conversion to carat weight for round brilliant-cut diamonds. Presidium electronic gemstone gauge is the industry’s first digital gemstone gauge and remains the only reliable one able to convert gemstone dimensions to estimated carat weight for round brilliant-cuts. Utilizing solid-state electronics to accurately measure up to 1/100mm, this gauge also features a clear and visible high-tech digital display for ease of reading measurements. Its touch button zeroing allows the convenience of resetting to zero at any measurement point. A high-setting jewelry attachment also allows easy measurement of mounted gemstones and its subsequent conversion to carat weight. The presidium electronic gemstone gauge also includes the presidium gemstone weight estimation table, which corresponds millimeter conversion to carat weight estimation.