- 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
- 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