Feature

●Measures an important refractive index for jewelry identification
●Built-in LED light allows you to measure independently without relying on an external light source
●Portable size
●English and Japanese instruction manual included


Description

A machine that measures the refractive index needed to identify gemstones. This type can measure up to RI1.81. The size is easy to carry. English and Japanese instruction manual included. (Does not include the characteristics chart with refractive index.) 3 LR-44 button batteries activate the built-in LED light for independent measurement. (Batteries not included)