The Presidium Analog Dial Gauge delivers precision gemstone measurement without electronic components. This professional-grade instrument simultaneously displays millimeter dimensions, carat weight estimates for round brilliant diamonds, and US ring sizes on a single easy-to-read dial. Its patented anvil design and friction-free rack-and-pinion mechanism ensure consistent accuracy across measurements from 0.0 to 23.0mm. The gauge accommodates ring sizes 2-13 and carat weights up to 3.65, making it indispensable for jewelers and gemologists. Includes a high-setting attachment, protective carrying case, and comprehensive gemstone weight reference guide. Built to exacting standards with no batteries required and backed by a one-year manufacturer's warranty.
