polarizing microscope

45mm strain free achromatic objective 4X, 10X,40X, 63X( or infinity strain free plane-scope achromatic objective 5X,10X,40X); Wide field plane-scope eyepiece WF10X/18 with scale of Crosshair and 0.1mm and eyepiece WF10X/18;Total magnification: 40-630X(or 50-400X); Articulated free binocular or trinocular head, interpupillary distance: 55-75mm, 30º inclined, 360 º rotatable, the adjustable height range of the vertical tube: 30mm; Revolving round stage: Φ160mm, 360ºrotatable and graduated 1ºincrements, minimum resolution 6' when using venire scale,center adjustable; Φ2-Φ30mm iris diaphragm and Φ32 filter; Abbe condenser : N.A.1.25; Coaxial coarse and fine focusing adjustable mechanism: 35mm, fine focusing adjustable precision: 0.002mm; Rotatable analyzer with graduation 0º-90º, sliding out of optical Path; Bertrand lens, sliding out of optical path; Optical compensator: r slip(first class red), 1/4r slip, quartz wedge polarize: under the stage, 0º adjustable, 360º rotatable. Built-in adjustable brightness halogen lamp 6V/20W(or 3.5V/1W LED lampand Kohlar illumination system