National Optical 420-430PHF-10 Binocular Stereo Zoom Microscope, WF10x Eyepieces, 10x-40x Magnification, 1x-4x Zoom Objective, Upper Halogen and Lower Fluorescent Illumination, Fixed Stage, 110V

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About National Optical 420-430PHF-10 Binocular Stereo

The National Optical 420-430PHF-10 Binocular Stereo Zoom Microscope has a pair of 10x widefield eyepieces, a 1x to 4x zoom objective for 10x to 40x continuous magnification, upper halogen and lower fluorescent illumination, coaxial focus, and a fixed stage with clips. The binocular head has a pair of eyepieces with interpupillary adjustment, fixed inclination to reduce eye and neck strain, and rotation capability to provide a more comprehensive view and enable sharing. Dioptric adjustment accommodates individual eye-strength differences. The zoom objective provides low magnification and a longer focal length for inspecting large-scale specimens, or specimens that require hands-on manipulation or repair, including rocks, minerals, watches, or circuit boards. A stereo zoom microscope is used for inspection and dissection of specimens when three-dimensional images are desired, and provides zoom, sometimes called pancratic, magnification that allows the user to zoom in on the specimen within a continuous magnification range.The microscope has upper (episcopic) illumination that reflects light off the specimen for enhanced visibility of opaque specimens and lower (diascopic) illumination that transmits light up through the specimen for enhanced visibility of translucent and transparent objects. The upper halogen light source provides bright light in a concentrated path, and a rheostat controls the amount of light emanating from the lamp. The lower fluorescent light source provides cool, white light for observing specimens as they would appear in their natural environment. Lighting can be configured for upper, lower, or simultaneous upper and lower illumination. The reversible black and white stage plate is used with top-mounted lighting to provide contrast with light- and dark-colored specimens. The frosted glass stage plate provides evenly diffused illumination. A blue filter helps naturalize the light. The fixed stage has stage clips to sec