Gem refractometer FGR-003A

Description

Gemological refractometer

Model:FGR-003A 

Specifications:

High hardness Synthetic CZ test prism

Scale range:1.35-1.85                    

Acurracy: ≦±003

Aluminum alloytable,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) new design can put into the product covered, easy to carry.   

★Built-in lithium battery, 700 mAh, full of electricity can work more than 7 days if work 8 hours each day. With a USB charging line, connect phone charger (220 V).             

★Equipped with a polarizer;The side has the bracket of polaroid, easy to store when not in use.  

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

★Portable Size,Single black bag packing

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

Size: 120mm×42mm×80mm;

Prism size: 14mm×4mm;

Metal table size: 37mm×68mm;

Weight: 390g;

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