Presidium Dial Gauge 

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.

PDG DIAL GAUGE PRESIDIUM

Features

• Instantly converts millimeter readings to carats for round brilliant-cut gemstones
• Measures from 0.00 to 23.00mm
• 0.02mm instrumental error, with simple zero realignment
• 0.1mm increments
• 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

Dimensions and Weight

• Length: 97mm (3.82 inches)
• Width: 61mm (2.4 inches)
• Height: 16mm (0.63 inches)
• Weight: 100g

Benefits

• Measures gemstone dimensions with accuracy to 0.01mm
• Clear and easy-to-read analog display with readings in mm/ct/ring size
• Clear and visible digital display for ease of reading measurements
• Simple and easy to use
• Light and portable instrument that can be used anywhere

Measurement Range

• Gemstone (mm): 0.00mm to 23.00mm (0.1mm increment) – 1 revolution equals 10mm
• Gemstone (carat): 0.01ct to 3.65ct (0.04ct increment)
• Ring size (US size): Size 2 to Size 13

Package contents

• Presidium Dial Gauge
• High setting jewellery attachment
• Presidium Gemstone Weight Estimation Table
• User handbook
• Warranty card

Plastic carrying case