Refractometer Discounts apply can be switched to white

can be switched to white (’cold’ light) orange (‘warm light)

The Apex tests for the following:

Field of view: nearly 2 newspaper columns X 15 lines of text

this is something that is very easy for you to do yourself with 3Kg of weights

Refractometer Discounts apply can be switched to whiteSummary For the gemmologist the refractometer is the most important gem tester after a loupe. It measures refractive index (to what extent light is bent as it passes through the gemstone). This product is intended for gemmologists (or those about to study gemmology) instructions are not included. Guarantee: 1 year. Detail Approx. 5 X 3 X 2 inches Built in monochromatic LED light Range: 1. 30 to 1. 81 Possible error in readings: + 0. 01 Test plate made