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PRESIDIUM Dial Gauge - Diamonds & Gems Weight Estimator

PRESIDIUM Dial Gauge - Diamonds & Gems Weight Estimator
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Price: $134.50
Availability: In Stock
Item #: 29.655
Manufacturer: Presidium Instruments Ltd.
Average Rating: Not Rated

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Presidium Dial Gauge (PDG)

An easy-to-use analog gauge for measuring gemstones dimensions

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.


·         Measures gemstones dimensions with accuracy to 0.01mm

·         Clear and easy-to-read analog display with readings in mm/ct/ring size

·         Designed to be simple and easy-to-use

·         Light and portable instrument that can be used anywhere


·         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 (3.83 inches)

·         Width: 61mm (3.15 inches)

·         Height: 16mm (0.63 inches)

·         Weight: 100g

Power and battery

·         1 x 3V battery

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

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