Gem Refractometer

High hardness CZ test prism Scale range:1.35-1.81              

Error: ±0.002        

Stainless steel table,easy to clean by advanced optic system,shadow edge is straight and sharp,easy to read it                                                                    

There are two ways of inputing the voltage:7batteries and DC3V direct current suply(AC100240V).                                

2ml refractive index Liquid(1.78±0.005) with unique design of the bottle(Proprietary technology ZL200620096730.7)                   

It is much safer ,much ecnomical and more convinent.