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a User's Guide in a foam-lined hard case
The custom-designed microprocessor delivers a nearly instantaneous readout of glycerin concentration or freeze point
The user interface consists of two buttons
We give these units a 2 year warranty
* Scale Range: 10%-30% Water
Gem Refractometer Gemology Gemologist RGM-100 w/ 789nm Flashlight RI 1.800 Ade Advanced Optics a User's Guide in aItem Description: RGM 100 Portable Gemological Refractometer with a flashlight COMES WITH 10 Gram Vial (1. 8ml) of 1. 800 Index Fluid Comes with instructions! Written by our staff, not converted from another language! Comes with a Gemstone Refractive Index Chart! Comes in a black zipper case! Product Specs: Measuring Range : 1. 30 1. 81 RI Minimum Graduation : (RI) 0. 01 RI Dimension : 125mm x 70mm x 40mmScale Division : 0. 01 nD Weight : 0. 4 kg
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