Specification : -Optical System: Infinite Optical System -Viewing Head : Seidentopf Trinocular Head, inclined at 30°, 360° Rotatable, Interpupilary Distance: 48-76mm, Light distribution (both) 100: 0 (100% for eyepiece), 80:20 (80% for trinocular head and 20% for eyepiece) -Eyepiece: WF10×/22mm and WF10×/22 mm (Reticule 0.1mm) -Polarizing Objective Lens : 4×/0.10 W.D=12.1mm 10×/0.25 W.D=4.64mm 20×/0.40(S) W.D=2.41mm 40×/0.66(S) W.D=0.65mm -Nosepiece: Backward Quintuple nosepiece, center adjustable -Analyzer Unit: Rotatable 360°, module type, can be locked -Bertrand Lens: Built In, Center Adjustable -Optical Compensator: λ Slip(First Class Red), 1/4λ Slip, Quartz Wedge (Ⅰ- ⅣClass) -Revolving Round Stage: Diameter Φ156mm, Rotatable 360°, Center Adjustable, Division 1°, Vernier Division 6’ -Focusing: Coaxial Coarse & Fine Adjustment, Range 25mm, Fine Stroke 0.2mm, Fine Division 0.002mm -Swing-out Condenser: N.A.0.9/0.13 swing out condenser -Polarizing Unit: with Scale, Rotatable 360°, Can Be Locked -Transmitted Illumination: 6V/30W Halogen Lamp (Input voltage:100V～240V) Free : -Cleaner Microscope 1set