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Camera lucida.

Great Britain?, late 19th century?
Physical Description:
1 camera lucida : brass ; 25 x 7 x 2 cm, in case 26 x 8 x 2 cm
Rare Books and Manuscripts
Cabinet Z1 3a
Yale Center for British Art, Paul Mellon Fund
Accessible by request in the Study Room [Request]
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Copyright Status:
Copyright Information
Three-Dimensional Artifacts
"A camera lucida basically consists of a prism mounted on an adjustable stand and a drawing-board. The prism has to have one right angle, two of 67.5° and one of 135°. When the stand is adjusted so that the prism half covers the pupil of the eye, the draughtsman using it has the illusion of seeing both the object he wishes to draw, which is reflected through the prism by rays of light, and its outlines on the drawing-board. If paper is placed on the drawing-board the outlines can easily be traced off."--Oxford Art Online. See also: Kemp, Martin. The science of art (1990), pp. 200-201.
Restricted fragile material. Use requires permission of the Curator of Rare Books and Manuscripts.
Camera lucida by an unidentified manufacturer, perhaps of British make. The instrument is made of brass components and is enclosed in a maroon morocco case, lined in blue velvet. The device consists of a table clamp and fixing screws, telescoping system with two extending tubes for adjustment and focusing, and a triangular crystal prism. Two circular lenses (22 and 27 mm in diameter) descend from the prism piece.
Subject Terms:
Artists' tools -- Specimens.
Optical instruments.
Image-projecting equipment.
Camera lucidas.

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