This professional infinity-corrected metallurgical microscope offers a wide magnification range and advanced features. It comes with four plan-achromatic objectives and a 30 degree inclined 360 degree swiveling trinocular head. This microscope is perfect for metallurgical labs, foundries for silicon wafer inspection, and quality control applications. Change magnifications quickly using the objective turret without significant refocusing thanks to the parfocal design. Using the included 10X eyepieces, the magnification range spans from 40X to 400X with three unique settings. The infinity-corrected lenses are achromatically corrected for improved resolution, and flat-field corrected to ensure edge-to-edge sharpness. Features: An infinity plan metallurgical and metallographic microscope with 3MP camera! Epi-illumination reflected light microscopy system Fully coated optical system with high resolution 30 degree inclined 360 degree rotatable trinocular Siedentopf head Four infinity-corrected plan-achromatic objectives included Variable-intensity halogen epi-illumination Two filter frames and one blue filter included Large mechanical stage with stain resistant finish Low position stage traveling controls Full optical glass elements Precise ground glass lenses All metal mechanical parts Coaxial coarse and fine focusing Dual side focusing controls Focusing tension control mechanism Adjustable interpupillary distance Adjustable diopter on both eye tubes Solid metal frame construction with stain resistant enamel finish Specifications : Nosepiece: quadruple Focusing Range: 1-9/16" (40mm) Interpupillary Adjustment Range: 2-3/16" - 3-0" (55 - 75mm) Mechanical Tube Length: 6-5/16" (160mm) Head: 30 degree inclined trinocular Camera/Video Trinocular Port: 23mm universal/standard photo tube Eyepiece: 10X Objective: infinity Plan Achromatic 4X (0.1 NA, WD25.4mm), 10X (0.25 NA, WD11.0mm), 20X (0.4 NA, WD6.0mm), 40X (Spring, 0.60 NA WD3.7mm) Stage Dimensions: 5.9"x 5.5" (150x140mm) Stage Traveling Range: 3.0"x2.0" (75x50mm) Venire Division: 0.000079" (0.002mm) Illumination: halogen lamp, 6V/20W Power Supply: 110VAC 60Hz Packing List:One Trinocular Compensation-Free Compound Microscope Head One Microscope Body with Frame, EPI Illumination System and Base One pair 10X eyepieces Four Plan Achromatic Metallurgical Objectives, 4X, 10X, 20X & 40X Two Filter Frames and One Blue Filter One Power Cord Dust Cover