GemLED Refractometer With M7 Docking StationInnovative 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
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product description
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Innovative 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 the shadow lines on the refractometer scale
Eyepiece with a wide field of view for comfortable reading of the scale.The optically corrected precision eyepiece is screwed in or out to focus the scale
The polarization filter is placed on the eyepiece and rotated when reading.It is the most important accessory of the refractometer for determining the single/double refraction of gemstones
External battery pack for AA size included
Refraction element:
The large support surface of 5 x 11 mm.
Made from SCHOTT / ZEISS La SF colourless high-end glass.
Very resistant to scratches and chemicals.
Plug-in transformer, switchable for:
240-220V / 50-60Hz
120-100V / 50-60Hz
GEMMODUL M7 docking station
Power supply and stand for GemLED refractometers
Dimmer for regulating the LED light intensity
Fixed position of the refractometer by means of a magnetic plate or holding plug