GemLED Refractometer With M7 Docking Station Desktop Jewellery & Watch Multi-Functional Repair Tool with LED Lights Bergeon 5901-P27

Bergeon 5901-P27

Length: 23

When set upper and lower limit value

A highly prized Conch Pearl

PRESIDIUM Gem Indicator is the industry's only multi-gemstone tester which utilizes the properties of electro-thermal conductivity and Presidium's signature

GemLED Refractometer With M7 Docking Station Desktop Jewellery & Watch Multi-Functional Repair Tool with LED Lights Bergeon 5901-P27Innovative gemstone refractometer with built in LEDs for mains and battery operation. Refractometer contact liquid ND 1. 79 and polarization filter included. Refractive index: nD 1. 30 1. 81, scale graduation 0. 01 for an easy, direct and accurate reading Monochromatic illumination with powerful LEDs 589nm of the sodium D wavelength, arranged directly on the refraction element within the refractometer housing, for a sharp and high contrast image of