Adopting Greenough optical system, SZN71 with compact structure is sleek and sporty. New designed optical path and click stop function, make it more precision and practical for inspection of electronic components and PC board in industrial field, also available for scientific research, education and antiques identification etc.
 

Viewing Head		45° inclined binocular head with fixed eyepiece tube, inter-pupillary range: 52mm - 76mm, with click stop and  interlock mechanism
		45° inclined trinocular head with fixed eyepiece tube, inter-pupillary range: 52mm - 76mm, with click stop and  interlock mechanism
Eyepiece		High eye-point wide field plan eyepiece PL10X/22mm, with adjustable diopter
		High eye-point wide field plan eyepiece PL15X/16mm, with adjustable diopter
		High eye-point wide field plan eyepiece PL20X/12.5mm, with adjustable diopte
Main Objective		Zoom objective 0.67X - 4.5X, working distance: 110mm
Auxiliary Objective		0.5X/177mm, 0.7X/120mm, 1.5X/47mm
Stand		Arm stand with fixed focus holder
		Pillar stand, can be equipped with different focus holders
Base		Plan base
		Base with illumination
Camera adapter		0.35X/0.5X/0.65X/1X C-mount adapte
Others		Precision measuring stage, gem clip

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Click stop function
Zoom hand wheel with click stop as a key improvement ensures accurate amplification, is very useful for sample dimension confirm. 
 

DOF and flatness
Greenough optical system with convergence angle of 10 degree, and working with wide field plan eyepieces, ensures the excellent flatness and depth of field.
 

Diverse auxiliary objectives
Three auxiliary objectives 0.5X/0.7X/1.5X for option, to expand SZN71 magnification from 3.3X to 135X. The Max. working distance is 177mm while the Min. is 47mm, to meet all the requirements from different applications.
 

Abundant illumination systems
LED/halogen/fluorescence for option, either built-in illuminator or external type is available, provide the best image by choosing a suitable light.