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Chevalier's Achromatic MicroscopeDesigned by Vincent Chevalier during the mid-nineteenth century, this microscope was the first to employ a system of chromatically corrected lenses in the objective. The microscope body tube is supported on a vertical bar by means of a short arm, with the entire assembly being secured onto a wooden base with a threaded mechanism. The circular stage is composed of a flat plate with a central hole through which light from a series of apertures may enter the objective. These apertures are placed in a rotating disc that is positioned underneath the stage, which has spring clips to secure the specimen. The plano-concave substage mirror is supported on the vertical bar by means of an adjustable collar, and incident illumination is enhanced through a bi-convex lens mounted to and positioned above the stage. A drawer in the wooden base is used to store accessories such as additional objectives and eyepieces. BACK TO NINETEENTH CENTURY MICROSCOPES Questions or comments? Send us an email.© 1998-2022 by Michael W. Davidson and The Florida State University. All Rights Reserved. No images, graphics, scripts, or applets may be reproduced or used in any manner without permission from the copyright holders. Use of this website means you agree to all of the Legal Terms and Conditions set forth by the owners.
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