Optical System Viewing Head Eyepiece Objective Nosepiece Stage Condense Focusing System Illumination Fluorescent Attachment Infinite Optical System Seidentopf Binocular/ Trinocular Head,Inclined at 30°,Interpupillary 55-75mm WF10×20mm Infinite plan Achromatic Objective:4×,10×,40×,100× *Flour semi-apo objective: 4x, 10x, 20x, 40x, 100x *Infinite Plan Phase Objective: Ph10x ,20x,40x,100x Quadruple Nosepiece Double Layers Mechanical Stage 140X135mm/ 75X50mm Abbe Condenser N.A. 1.25 with Iris Diaphragm & Filter Coaxial Coarse and Fine Adjustment, Fine Division 0.002mm, Coarse Stroke 37.7mm per Rotation, Fine Stroke 0.2mm per Rotation, Moving Range 22mm LED Illumination,Brightness Adjustable 5W Fluorescent LED illumination, with adjustable brightness DF-I fluorescent vertical illuminator.Equipped with a set of fluorescent channels. DF-II fluorescent vertical illuminator equipped with two sets of fluorescence channels DF-VI fluorescent vertical illuminator can be configured with three to six groups of fluorescent channels