Jewellery Tools > Stone & Mounting Diamond Gauge [Model-4188]
This hand-held gauge is easy to use and convenient. The holes in the gauge are used to measure stones while the extensions are used to measure mountings. Makes comparing 2 similar sizes easy. One side shows, millimeters, the other side shows the corresponding carat measurements. Measures 2 – 11 mm in 0.5 mm increments. Measure and compare round gemstones and mountings. Measures 2 – 11 mm in 0.5 mm increments. 19 sizes total. Measures in carats and millimeters.