3.5X-45X Trinocular Zoom Stereo Microscope Head WD 165 mm with WF10X Eyepiece 0.5X Barlow Lens 0.5X C-mount Lens Simul-focal or NOT Simul-focal. Head: articulated free trinocular head, 45 degree Inclined, 360 degree Rotatable Eyepiece: a pair WF10X high eye-point eyepiece Objective: 0.7X-4.5X zoom Zoom Range: 6.4:1 Diopter Adjustment: +/-5dp Interpupillary Distance: 55-75 mm (2.17"-2.95") Working Distance: 100 mm (3.94), 165 mm (when 0.5X barlow lens) C-mount Lens: 0.5X Barlow Lens: 0.5X A pair eye cups included Package Included: 1 x microscope head 1 x 0.5X Barlow lens 1 x 0.5XCTV lens 2 x WF10X eyepieces 2 x Rubber eye cups Attention: There are 2 options for this listing, one is simul-focal head (without the swich bar), and the other one isn't simul-focal head (with the swich bar). Only the head included, NOT including the stand and other item! This item is in the category "Business, Office & Industrial\Healthcare, Lab & Dental\Medical/Lab Equipment Attachments & Accessories\Microscope Parts & Accessories\Other Microscope Parts & Accessories". The seller is "zhangwenju66_3" and is located in this country: CN.This item can be shipped worldwide.