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					▾ SMZ-171 Binocular 
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					▾ SMZ-171 Trinocular 
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					Optical system
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					Greenough
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					Trinocular light split
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					/
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					Fixed 50:50
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					Observation angle
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					45°/ 60°
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					45°
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					Objective system
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					Zoom; ratio 1:6.7
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					Objectives magnification
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					0.75X~5X
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					Auxiliary ESD objectives
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						0.3X (WD = 301mm), 
0.5X (WD = 191.8mm), 
0.63X (WD = 142.7mm) 
0.75X (WD = 128.6mm),
1.5X (WD = 56.3mm ), 
2.0X (WD = 38.6mm)
					 
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					Interpupillary distance
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					52-75mm
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					Height of eye point
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					405mm
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					Eyepiece(s)
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					N-WF, high eye-point 10X(Ø23), Diopter adjustable interchangeable with biological eyepieces 
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					N-WF 12.5X(Ø18), 15X(Ø16), 20X(Ø13) optional
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					Working distance (standard)
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					110mm
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					Working distance (max.)
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					301mm
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					Stand option
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					Pole type stand without illumination
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					Arm base stand and plain stand available 3W LED incident and transmitted light with reflector design Improved design for various boom stands for industrial use
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					Focusing stroke
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					49mm
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					Focus mechanism
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					Coarse focusing system with tension adjustment
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					Head holder
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					for Ø 32mm column and Ø 76mm head
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					C-Mount adapter
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					Trinocular head only
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					0.5X, 0.65X, 1X adapters available
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					Photo adapter
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					SY10 photo adapter 2.5X, 4X photo eyepiece available
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					Base
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					303 x 239mm
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