Presidium Dial Gauge

Presidium Dial Gauge

Presidium Gem Computer Gauge

Presidium Gem Computer Gauge

Presidium Electronic Gauge

One of the most reliable digital gauges that measures gemstone dimensions with direct conversion to carat weight for round brilliant-cut diamonds
Availability: In stock

Presidium Electronic Gemstone Gauge is a reliable choice with an ability 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 to millimeter conversion to carat weight estimation.


  • Measures from 0.0 to 25.0mm
  • Accuracy: 0.01mm / Tolerance: 0.02mm
  • Direct digital millimeter/carat readout
  • Touch button zeroing that allows the convenience of resetting to zero at any measurement point
  • Smooth slider mechanism
  • Low battery consumption
  • Portable and lightweight
  • Attachment for high-setting jewelry provided as an accessory
  • Presidium Gemstone Weight Estimation Table provided
  • Compact protective case included with auto-magnetic power off when placed in carrying case


  • Instantly converts millimeter readings to carats for round brilliant-cut gemstones
  • Measures gemstone dimensions with accuracy to 0.01mm
  • Clear and visible digital display with readings in mm or ct
  • Light and portable instrument that can be used anywhere

Power & Battery

  • 1 x 3V battery (provided with the product, approximately 5000 hours of battery life)
  • This product comes with a protective carrying case box that has an auto-magnetic power off when the gauge is placed back in the carrying case.
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