REF601 Gem Refractometer
It is designed for measuring the refractive index of gem and other solid matter. The gemological refractometer is characterized by small volume and less weight. It is easy to carry. It is a popular instrument used in jewelery market.
Measuring range :1.30~1.81         
Minimum scale : 0.01
                 
Gem Digital Refractometer
1.       Measuring Range：R.I.=1.30-3.00;
2.       Error：≦±0.007;
3.       Refractive Index，reflective index 
4.       Oil-free test and no pollution 
5.       All digital display
6.       One operation key
7.       Types of the measured: naked stone and decorated gems
8.       Net weight:410g