EM-31, LED Binocular Entry-Level Dual 2x, 4x Incident and Transmitted Turret Stereo MicroscopeIncludes:Dust Cover for EM-30 SeriesRubber Eyeguards for the EM-30 Series (paired) includedEM-30 Series Meiji Techno Instruction Manual includedMeiji Techno America's EM-31 Series meets the demand for a complete Advanced-level Binocular Dual turret style stereo microscopes with a built in 2x, 4x objectives giving the user 20X, 40X magnification with the standard 10X eyepiece. Equipped with LED illumination in a stable large footprint design and a comfortable carrying grip for ease of portability. Binocular head is inclined at 45° tubes, One ± 5 diopter adjustment, Interpupillary distance adjustable between 55 mm and 75 mm. The EM-31 Binocular Turret Stereo Microscopes have crisp, erect images over a wide field of view. The stand is made out of metal cast alloy and has a rack and pinion design with coarse adjustment and tension control.Equipped with a Revolving nosepiece with Dual 2x/4x (EM-31) magnification objective with large field of view. Field of views 20 mm/6.6 mm, Working distance 100 mm. Featuring incident and transmitted LED illumination, these student microscopes are built to last, year after year. Just perfect for grade schools and high schools! This series is a larger frame than the EM-20 models, great for observing any biological or physical science specimens, plants, insects etc., virtually any object because the stand allows the optics to be raised high enough to fit virtually any educational specimen.Features:Complete Configured system with Microscope Body, Stand , EyepieceTurret Style Objective Changer with Triple Magnifications 20X, 40XRobust Alloy metal stand with smooth rack & pinion designNew design, Ergonomically placed focus knobsLight weight, compact body, easy to carry with top hand grip for ease of transportLED Transmitted and Incident illuminators feature a long life with low power consumptionTransmitted and incident LED illumination equipped with variable intensityAll optical parts are anti-fungus treatedDust Cover for EM-31 includedRubber Eyeguards for EM-31 includedMeiji Techno Instruction Manual included for EM-31.