"Technical Specification: Optical system : infinity-corrected optical system Viewing head : 30 inclined Infinity hinge three-way viewing head the interpupillary distance is adjustable between 54mm - 75mm diopter adjustment : 5 diopters two-level split ratio R : T 100:0 or 50 : 50 Eyepiece : High eye-point wide field plan field eyepiece PL10X/22mm Objectives: LMPL 5X /0.15 WD10.8mm LMPL 10X/0.30 WD12.2mm LMPL 20X/0.45 WD4.00mm LMPL 50X/0.55 WD7.9mm Nosepiece: Five-position nosepiece Focusing adjustment : Reflected frame, coaxial focus system with tension adjustment and up-limited device, coarse range: 28mm, fine precision: 0.002mm. Stage can be adjusted up and down, 78mm high sample is available.Transmitted DAN Reflected frame, coaxial focus system with tension adjustment and up limited device, coarse range: 28mm, fine precision: 0.002mm. Stage can be adjusted up AND down, 28mm high sample is available.(optional) Stage : Double layer mechanical stage with X/Y coaxial adjustment, size : 175mmX145mm, moving range: 76mmX42mm. Plate for reflected frame Reflected illumination : Wide-range voltage 100V-240V_AC50/60Hz, reflected lamp-house with single 5W LED, warm color. Koehler illuminator with oblique light device, center adjustable field and aperture diaphragm. Transmitted illumination : Wide-range voltage 100V-240V_AC50/60Hz, transmitted lamp-house with single 5W LED, warm color. optional Metallographic Analysis Software : FMIA2020 Metallographic analysis software Sony chip 5 million camera device, 0.5X adapter lens interface, high-precision micrometer (100x0.01mm, 100x0.01Cm, calibration d 0.15mm, d 0.07mm)"