Stone Gauge-Baker Style

The Baker-Style Stone Gauge is a dual-purpose measuring tool designed for professional jewelers who need to quickly and accurately size both loose stones and mountings at the bench. One face of the gauge displays millimeter measurements, while the opposite face shows the corresponding carat weight equivalents—eliminating the need to cross-reference separate charts during stone setting or evaluation.

The gauge features precisely sized holes used to measure stones by diameter, and extended tabs or prongs used to measure the inside dimensions of mountings. This two-in-one functionality makes it an efficient everyday bench reference tool for stone setters, bench jewelers, and gemologists alike.

Features

• Dual-function design measures both loose stones and mountings
• Drilled holes sized for measuring stones by diameter
• Extended tabs for measuring mounting dimensions
• One side graduated in millimeters
• Opposite side displays corresponding carat weight measurements
• Compact, bench-friendly form factor for everyday use

Specifications