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Gem Microscope SST-M29GEM
visual distance: 55-75mm adjusting the diopter: ±5 / / 
Zoom ratio: 1:7 Working distance: 99mm
The range for adjusting the visual distance: 55-75mm
The range for adjusting the diopter: ±5
The range for adjusting the focus: 135mm
Wide-angle eyepieces with high point
Optic head and stand tilt to a more natural 40° viewing angle
Three kinds of illumination fields
Tungsten-halogen dark field/bridge field illumination with sliding baffle
Rheostat to vary dark field/bright field intensity
Adjustable iris diaphragm to control width of light beam
Fluorescent illumination simulates north daylight, ideal for diamond color grading
Working normally in 90-230V voltage range and the luminance is steady
Built-in optical-fiber illumination
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