Projector

Description
Instruments of this sort, which projected the image of objects placed on them, came into use in the second half of the nineteenth century. The “J. Duboscq / à Paris / No. 54” inscription on this example refers to Jules Duboscq, an important optical instrument maker in Paris.
This form came to be known, in the twentieth century, as a viewgraph or an overhead projector.
J. Duboscq, “Appareil pour la projection des corps placés horizontalement,” Journal de Physique Theorique et Appliquee 5 (1876): 216-218.
Debbie Griggs, “Projection Apparatus for Science in Late Nineteenth Century America,” Rittenhouse 7 (1992): 9-15.
Location
Currently not on view
date made
after 1876
1834-1844
1870s
maker
Duboscq, Jules
Place Made
France: Île-de-France, Paris
Physical Description
brass (overall material)
Measurements
overall: 28 in x 13 5/8 in x 13 5/8 in; 71.12 cm x 34.544 cm x 34.544 cm
ID Number
PH.315416
catalog number
315416
accession number
217544
Credit Line
U.S. Military Academy
See more items in
Medicine and Science: Physical Sciences
Science & Mathematics
Sputnik
Data Source
National Museum of American History, Kenneth E. Behring Center

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