Gemmological Refractometers

RGM-181 nbgGemmological Refractometers are used to measure the Refractive Index of gemstones, as well as the index double Refraction. Through the parameter you can judge whether a gem is uniaxial or biaxial photo-positive or photo-negative.

 

RGM-181 : Gemmological Refractometer  1.30 to 1.81 RI ± 0.01

Scale division 0.01  (LED illumination built in 589nm)

CZ hard glass prism reduces scratching

Polariser and R.I. oil included

Good quality metal case and swing top

Brochure for RGM-181:RGM 181 sios.pdf

RGM-RIoil: Index oil RI 1.79 3ml(10g) bottle

 

 

 

 

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