Presidium Electronic Gemstone Gauge

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This Presidium® electronic gemstone gauge accurately measures loose or set stones—even those with deep girdles or set in deep mountings—and instantly converts millimeters to carats. An easy-to-read digital display indicates ID and OD from 0–25mm with .01mm accuracy, and the gauge includes a jewelry attachment for measuring depths of stones in settings. It features auto shut-off to conserve battery use. A 3-volt battery, protective case, and gemstone weight estimation table are included.

  • Brand : Presidium
  • Accuracy : 0.01mm
  • Range : 0–25mm
  • Dimensions : 3.82"L x 2.4"W x .063"H (97 x 61 x 16mm)
  • Modes : Millimeters
  • Country of origin : Thailand

Catalog page: 2020-2021 Tools and Equipment Catalog p. 250