Zogroscope
notes: label: Description
content: The zogroscope was designed to magnify prints so they could be seen more easily. It has a convex lens mounted in a square wooden frame that, in turn, is supported on a pedestal. A second frame, hinged at the top, holds a mirror that can be held out at any desired angle. The form came into use in the eighteenth century and remained popular throughout the nineteenth century. It was also known as an optical diagonal machine or cosmorama. This example came from the University of Virginia.
label: Description
content: Ref: J. A. Caldecott, “The Zogroscope or Optical Diagonal Machine,” <i>Annals of Science</i> 9 (1953): 315-322.
label: Location
content: Currently not on view
topic: label: Subject
content: Science & Scientific Instruments
setName: label: See more items in
content: Medicine and Science: Physical Sciences
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content: Science & Mathematics
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content: Optics
creditLine: label: Credit Line
content: University of Virginia
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: PH.323396
label: catalog number
content: 323396
label: accession number
content: 251562
objectType: label: Object Name
content: optical diagonal machine
physicalDescription: label: Physical Description
content: wood (overall material)
label: Physical Description
content: glass (overall material)
label: Measurements
content: overall: 63 cm x 31.3 cm x 22 cm; 24 13/16 in x 12 5/16 in x 8 11/16 in
label: Measurements
content: overall: 25 in x 12 in x 8 in; 63.5 cm x 30.48 cm x 20.32 cm