This compound microscope is an ideal instrument for studies in science-based subjects Achromatic 4x, 10x, and 40xr parfocaled and parcentred objective lenses deliver 40X to 400X magnification Locked-on 10x wide-field eyepiece with pointer Revolving triple nosepiece with positive click stops lets you rotate between lenses Equipped with a monocular 45-degree inclined head with 360-degree rotation Built-in 3.5-inch movable stage and 6-hole rotating disc diaphragm deliver uniform intensity of the lower light for enhanced viewing Coaxial coarse focusing within a built-in slip clutch system to prevent damage to the microscope gears Corded LED illumination with On/Off switch Includes a dust cover and an instruction manual Designed to be rugged and durable for years of use