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Binocular Eyepiece in Case, by C. D. Ahrens, London, c.1871

preview image for Binocular Eyepiece in Case, by C. D. Ahrens, London, c.1871
Inventory Number: 91539
Object Type: Object
Persons: Carston Diederich Ahrens
Date Created: c.1871
Place Created: London England United Kingdom Europe
Accession Number: 1970-101/part
Brief Description: A double-image prism is made from Iceland spar (calcite) and is located in the copper alloy tube that inserts into a microscope. Above the prism is a double-wedge prism of flint glass to render the light achromatic. Symmetrical tubes take the rays to the eyes, and intraocular distance is varied by rackwork. Two eyepieces are also present.
The case is covered with red leather and inside, lined with purple silk and blue felt.

Primary Inscriptions: .1: "R.M.S. No 54" on main body .2: "R.M.S. No 54" on one binocular tube .3: "R.M.S. No 54" on rim of both eyepieces .4: "BINOCULAR EYEPIECE / FOR HIGH POWERS. / BY C. D. AHRENS, / LONDON." stamped into leather of upper surface
Provenance: Lent by the Royal Microscopical Society with their collection. Presented to the Society by Carston D. Arhrens, 31 October 1877
Collection Group: Royal Microscopical Society Collection

There are no associated narratives.

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