Gem refractometer FGR-002A

Description

Gemological refractometer

Model:FGR-002A

Specifications:

High hardness Synthetic CZ test prism

Scale range:1.35-1.85                    

Acurracy: ≦±002   

Stainless steel table,corrosion-resistant,easy to clean             

Professional optical design,shadow edge is ultra-straight and clear,easy to read; and Internally installed the monochromatic light (wavelength:589.5nm) 

There are two ways of inputing the voltage:2 xAAA batteries and DC3V 50mA direct current suply(AC100—240V).                                           

2ml refractive index Liquid(1.78±005) with glass bottle

★ with Two levels of light brightness,adjustable by switch, convenient for measuring the refractive index of gemstones with different properties;                   

★Equipped with a polarizer;

★Eyepiece: 32mm in diameter, with magnifying function;

Test conditions: Temperature: room temperature 5-35°C, humidity: ≤75%, no acid, alkali and other corrosive gases in the room;

Size: 140mm×42mm×95mm;

Prism size: 14mm×4mm;

Metal table size: 37mm×68mm;

Weight: 390g;

Minimum scale: 0.01. Scale is marked finer, with not only 1.40,1.50,1.60 but also 1.45,1.55,1.65…

Application

A lightweight measuring instrument used by jewellers and traders of gemstones to measure polished stones over a refractive index range of 1.30 to 1.81 RI.

This instrument can also be used to identify whether a particular stone is Isotropic or Anistropic (uniaxial or biaxial).

Differences of all our 5 Gem refractometer Models