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Magnifiers that are intended to be used as reading and vision aids by magnifying images or objects, such as labels on packages of food or medicine, reading materials, maps, color photographs, or pictures. They can be either held in the user\'s hand or used as a tabletop model; the magnified image is viewed by looking through the transparent magnifying lens. Reading-aid magnifiers are electronically or battery-powered and include a light source and/or electronic amplification. Video magnifiers are also available.
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