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29 individual ring finger gauges
Each chain features round rolo links approximately 2
Top work surface features sharp corners for precise metalworking
a thinner mixture allows for greater control and smoother coverage
Positive-lock mechanism engages post groove
Refractometer Prop 65 - Lead 29 individual ring finger gaugesThe GemPro refractometer is a primary gemological instrument used to measure the refractive index of gemstones for accurate identification. Clear optics and an easy viewing lens make readings straightforward, helping you quickly determine one of a stones most critical optical properties. Features Measures refractive index for gemstone identification Easy viewing lens for clear scale observation Designed for professional gemological use Compact
