20mm dial gauge



This Hi-Tech Diamond 20mm dial gauge (also known as a “pearl gauge”) is accurate to +/-.1mm, features zero adjustment and has a broad pin that prevents damage. Dial gauges are handy, compact and precision engineered for accurate measurements of pearls, beads and other small stones.

Hi-Tech Diamond 20mm dial gauges are professional quality, providing you with precise and accurate measurements of pearls, beads and small stones. The aluminum discs fold together securely when not in use to prevent damage. This dial gauge is compact and conveniently fits into a pocket or purse.


  • 20mm maximum opening
  • +/-.1mm accuracy
  • Zero adjustment
  • Locking screw to hold measurement
  • Carrying case included
  • 30-day warranty

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