Dial Gauge 20mm Eco. - Large

Dial Gauge 20mm Eco. - Large

Brass Calipers 100mm (IND)

Brass Calipers 100mm (IND)

Presidium Dial Gem Gauge

It is the only Analouge Dial Gauge that combines dual measurements for gemstones in mm with corresponding carat conversion for "round brilliant-cut gemstones".

Availability: In stock

Presidium Dial Gem Gauge is the easiest to use and the only one of its own kind in the industry that can measure Gemstone Dimensions with Direct Conversion to Carat Weight for Perfect Round  Brilliant-cut Diamonds. 

  • PDG also Contains US Ring size reader in its inner circle
  • PDG is manufactured to the Highest Quality
  • PDG features its own Patented Anvil that Does Not wear and tear easily
  • PDG maintains its accuracy for a long time
Write Your Own Review
You're reviewing:Presidium Dial Gem Gauge
Your Rating

Specifications : Presidium Dial Gem Gauge (PDG)

  • 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
  • Portable and lightweight that can be used anywhere
  • Compact protective case included
  • Attachment for high setting jewelry provided
  • Presidium Gemstone Weight Estimation Table provided
Dimension and weight
Length Width Height weight (Grams)
Product 9.7 6.1 1.6 102
Package 16 9 4 350
  • This Product comes with a Warranty

Calibration :

  • Not Required

Precautions :

  • Keep the tester dry. Precipitation and all types of liquids or moisture can contain minerals that will corrode electronic circuits. If your tester gets wet, remove the battery, and allow the tester to dry completely before replacing it.


  • Do not use, store or expose the gauge in dusty and dirty areas. Its moving parts can get damaged.


  • Do not use, store or expose the gauge in hot areas. High temperatures warp or melt certain plastics.


  • Do not use, store or expose the gauge in cold areas. When the gauge returns to its normal temperature, moisture can form inside the gauge.


  • Do not attempt to open the gauge other than as instructed in this handbook.


  • Do not drop, knock, or shake the gauge. Rough handling might break the fine mechanics.


  • Do not use harsh chemicals, cleaning solvents, or strong detergents to clean the gauge.


  • Do not paint the gauge. Paint can clog the moving parts and prevent proper operation.
We found other products you might like!