Gauges

Dial Gauge (PDG)


The industry’s only easy-to-use analog gauge for measuring gemstone dimensions with direct conversion to carat weight for round brilliant-cut diamonds.

Presidium Dial Gauge measures from 0.0 to 23.0mm in 0.1mm divisions. The PDG features an easy-to-read millimeter and carat scale, and is only dial gauge in the industry that combines dual measurements for gemstones in millimeters with corresponding carat conversion for round brilliant-cut gemstones. PDG also contains an inner scale display for US ring size measurements.

The PDG is manufactured to the highest quality and features a patented anvil with a non-metallic lubrication-free rack and pinion technology that resist wear and tear and maintain its accuracy.



Features

  • Measures from 0.0 to 23.0mm
  • Accuracy: 0.1mm / Tolerance: 0.02mm with simple zero realignment
  • Analog gauge with mm/ct/ring size display
  • Patented anvil
  • Smooth slider mechanism
  • Portable and lightweight
  • Compact protective case included
  • Attachment for high setting jewelry provided
  • Presidium Gemstone Weight Estimation Table provided

Benefits

  • Instantly converts millimeter readings to carats for round brilliant-cut gemstones
  • Measures gemstone dimensions with accuracy to 0.01mm
  • Clear and easy-to-read analog display with readings in mm/ct/ring size
  • Light and portable instrument that can be used anywhere



Specifications

Power & Battery

No batteries needed.

This product comes with a protective carrying case box.

Dimensions & Weight

Length: 97mm (3.82 inches)

Width: 61mm (2.40 inches)

Height:16mm (0.63 inches)

Weight (without batteries): 100grams (3.52oz)


How It Works Video