The Frey Scientific compact student inclined head microscope is a compound microscope in a smaller size for elementary and middle school students, has a monocular viewing head that rotates 360 degrees, a 10X widefield eyepiece, coarse- and fine-focus options, 4X, 10X, and 40XR achromatic objectives, LED, incandescent, or mirror illumination options, and a durable cast aluminum body with enamel finish. Microscopes are widely used in education, lab research, biology, metallurgy, engineering, chemistry, manufacturing, and in the medical, forensic science, and veterinary industries. This microscope features a durable cast aluminum body with enamel finish and a safety rack stop to prevent objective lens damage. An 88 x 82mm plain stage moves up and down. Locked-on clips hold a specimen in place, and one or more high-position focus control knobs make visual adjustments. Coarse focus moves the objective lenses toward or away from the specimen. Fine focus precisely tunes the focus on all or part of the specimen. Illumination shines light up from below the stage through the specimen. Models with LED and incandescent illumination use 110V AC and come with a US/North American plug. LED illumination is energy-efficient and provides cool illumination equal to a 20-watt tungsten bulb. Tungsten incandescent illumination is bright but also produces heat, and is not recommended for viewing live cultures or specimens. Mirror illumination directs ambient light up through the hole in the stage and requires no external power. A disc diaphragm varies the amount of light passing through the stage opening to properly illuminate the specimen and increase contrast and resolution. The microscope comes completely assembled with a clear vinyl dust cover and instructions. Specifications Eyepieces 10X widefield Objective lenses 4X, 10X, and 40XR Viewing configuration Monocular 45-degree inclined head Body type Cast aluminum with enamel finish Power supply 110V AC (LED and incandescent), ambient light (mirror) Overall dimensions 30 x 11 x 16.25cm (H x W x D) Stage type Plain Stage dimensions 88 x 82mm (W x D) Weight 3.7lb. Warranty Five-year H is height, the vertical distance from the lowest to highest point; W is width, the horizontal distance from left to right; D is depth, the horizontal distance from front to back. Microscopes are instruments used to enhance the resolution of an object or image. Types include compound, stereo, or digital. Compound microscopes use a compound optical system with an objective lens and an eyepiece. Stereo microscopes show object depth in a three-dimensional image. Digital microscopes are used to display an image on a monitor, rather than looking through a lens. Microscopes can have monocular (one), binocular (two), or trinocular (three) eyepieces, with varying viewing abilities. A trinocular eyepiece is used to output digital images or video to an internal or external device such as a camera or monitor. Magnification ability refers to the size of an image. Resolution, also known as resolvant power, refers to the clarity of the image. The interaction between field of view (FOV), numerical aperture (NA), and working distance (WD) determines resolution. Microscopes can control magnification through a fixed focus, or through a range of adjustments. They can also use LED, fluorescent, and mirror light sources to help control viewing capabilities. Microscopes are widely used in education, lab research, biology, metallurgy, engineering, chemistry, manufacturing, and in the medical, forensic science, and veterinary industries. School Specialty provides instructional materials and supplies under dozens of brands, among them Think Math, Delta Education, Frey Scientific, Childcraft, and School Smart. The company, founded in 1959, is headquartered in Greenville, WI. What’s in the Box? Compact student inclined head microscope. Vinyl dust cover. Instructions.