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GM-171B
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GM-171T
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Optical system
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Greenough
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Observation angle
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45°/ 60°
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45°
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Magnification range (standard)
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0.75X--5X
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Zoom ratio
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1:6.7
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Eyepiece
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N-WF, high eye-point 10X(Ø23), Diopter adjustable interchangeable with biological eyepieces
N-WF 12.5X(Ø18), 15X(Ø16), 20X(Ø13) optional
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Interpupilary adjustment
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48mm-75mm
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Working distance (standard)
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110mm
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C-Mount adapter
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/
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0.5X, 0.65X, 1X adapters available
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Photo adapter
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/
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SY10 photo adapter
2.5X, 4X photo eyepiece available
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Auxiliary ESD objectives
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1.5X [WD = 56.3mm ], 2.0X [WD = 38.6mm]
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Stand option
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Incident illumination
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7W fluorescent light, colour temperature of 6000K to reduce any yellowing effects on the gem, angle adjustable
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Transmitted illumination
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6V/30W Halogen
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Focusing adjustment
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125mm
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Stage
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Mounting hole for gem holder on both sides. Users can choose the position freely
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Tilting base
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With a tilting range of 0°(upright) to 45°, accessible to users of various heights
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