Measure Range: 0 ~ 200,000 Lux ( 0.1 ~ 18,581 Fc) switchable | Accuracy: ±4%(0~10,000 Lux); ±10% ±5% rdg (above 10,000 Lux) | Record Interval: 1~60 sec / 1~60 min / 1~24 hrs | Windows Compatibilty: Windows 10, 8, 7, Vista and XP (Do not run in Mac OS) | CE Certified & RoHS Compliant
It has an AC-powered built-in LED light source that provides long lasting ideal illumination | An instrument specially designed for analyzing and viewing if a gemstone is doubly (anisotropic) or singly (isotropic) refractive | Detecting strain diamonds and other gems and separating synthetic amethyst from genuine | With the conoscope, the user can see the different directions the light is traveling through the stone.