The analog stone gauge from Presidium is designed for professional goldsmiths, jewellery designers, and workshops who require precise measurement and carat calculation for round stones. With this tool, you can quickly and reliably match stones, which is essential for repairs, production, and quality control of jewellery.

The stone gauge measures from 0.00 to 23.00 mm with an accuracy of 0.10 mm, providing precision and confidence when working with gemstones of various sizes. It comes in a practical case along with an instruction manual and calculation tables, so you always have the reference tools at hand.

• Analog stone gauge from Presidium
• Calculates carat weight for round stones
• Measures from 0.00 to 23.00 mm with 0.10 mm accuracy
• Supplied in a case with instruction manual and calculation tables