Presidium Dial Gem Gauge is the easiest to use and the only one of its own kind in the industry that can measure Gemstone Dimensions with Direct Conversion to Carat Weight for Perfect Round Brilliant-cut Diamonds.
- PDG also Contains US Ring size reader in its inner circle
- PDG is manufactured to the Highest Quality
- PDG features its own Patented Anvil that Does Not wear and tear easily
- PDG maintains its accuracy for a long time