Specification : -Optical System: NIS60 Infinite Plan Semi-Apochromatic Optical System -Viewing Head : Seidentopf Trinocular Head, inclined at 30°, 360° Rotatable, Interpupilary Distance: 47-78mm -Eyepiece: 10×/25mm (2 pieces) - Infinite Strain Free Plan Achromatic Objective (Transmitted) 4×/0.10 W.D=30mm 10×/0.25 W.D=10.2mm 20×/0.65 W.D=12mm 100×/1.25 Oil W.D=0.2mm -Nosepiece: Backward Sextuple Nosepiece with DIC Slot, center adjustable -Condenser : Strain-free swing out condenser N.A.0.9/0.25 -Transmitted Illumination : Koehler Illumination 12V/100W Halogen Lamp (Input voltage: 100V-240V) -Focusing: Coaxial Coarse & Fine Adjustment, Fine Stroke 0.1mm, Coarse Stroke 35mm, Fine Division 0.002mm, Sample Space 50mm -Stage: High-precision Revolving Round Stage, Diameter 190mm, Center Adjustable, 360° Rotatable, Minimum Division 1°, Vernier Division 6’, 45° Click Stop Knob -Analyzer Unit : Rotatable 360°, Minimum Scale Reading: 0.1º(Vernier Scale) -Conoscopic observation: Switch between Orthoscopic and Conoscopic Observation, Bertrand Lens Position Adjustable -Optical Compensator: λ Plate(First Class Red), 1/4λ Plate, Quartz Wedge Plate -Reflected Polarizer: Fixed Polarizer -Filter : Blue -Include mechanical stage for X and Y axis