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this is something that is very easy for you to do yourself with 3Kg of weights
can be switched to white (’cold’ light) orange (‘warm light)
fine repair jobs
or a really cheap version made of aluminium shapes
The Apex tests for the following:
Refractometer Discounts apply this is something that isSummary 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
US$ 187.19
US$ 249.50
US$ 30.00