| Model | FGR-003 |
|---|---|
| Brand | Unbranded |
| Weights | 800g |
| Country of Origin | China |
Check the listing for details. Jewelry Refractometer Gemstone Refractive Index Tester Appraisal Instrument. Condition: New, Made in China. Listed at 661.98 USD. 135-1.85 High contrast scale on black background for clearer interface. Light source. Built-in quasi-monochromatic LED light source, wavelength 589±3nm.