UV COLORSCOPE Elma Watch winders Does not roll around on

Does not roll around on the bench

Bergeon 6988-090

Ø45mm overall

Bergeon 6744

the circuit apply setting discharge current to the power under test

UV COLORSCOPE Elma Watch winders Does not roll around onUV lamp for testing the fluorescence of gemstones with long wave 366nm UV lamps This fluorescence test with the UV COLORSCOPE is more sensitive than the traditional incident light method. The high intensity of the bright UV lamps also shows weak fluorescence, as the test stone is placed on the UV filter. Due to the viewing angle and the black surface of the "black light" UV filter, there is no misinterpretation by the viewer due to the bluish residual