
A nifty easy-to-use analog gauge for measuring gemstone dimensions with ability to convert to estimated carat weight for round brilliant diamonds (up to 29 carats), without the need to dismount your mounted diamonds! The PDG also has an inner scale display for US ring size measurements.
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
Product Information
| Category | Toys & Collectibles > Collectibles & Hobbies > Rocks, Fossils & Minerals | 
|---|---|
| Brand | FindingKing | 
| Condition | New | 

 
  
  
  
  
  
  
 