Gem refractometer with 2ml refractive index liquid for test the refractive index of gemstone

[Product Description]

Gem Refractometer is the most important and precision tool of gem identification.It can measure refractive index fast without damage.

[Product Specs]

1,Testing Range:1.35-1.85

2,Testing Accuracy:±0.003

3,Special optical design with very easy to read the refractive index clearly

4,Working table is made of full stainless steel,corrosion resistance,easy to clean and beautiful surface

without screw

5,There are two ways of inputing the voltage:2x AAA batteries and DC3V direct current suply(AC100-240V)

6,With one polariscope plate and one bottle of 2ml refractive index oil for bottle of unique design

(1.785±0.005) which get international patent No.:2006200967307

7,It is much safer ,much ecnomical and more convinent.