- 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.
- Ref: J. A. Caldecott, “The Zogroscope or Optical Diagonal Machine,” Annals of Science 9 (1953): 315-322.
- Currently not on view
- Object Name
- optical diagonal machine
- Physical Description
- wood (overall material)
- glass (overall material)
- overall: 63 cm x 31.3 cm x 22 cm; 24 13/16 in x 12 5/16 in x 8 11/16 in
- overall: 25 in x 12 in x 8 in; 63.5 cm x 30.48 cm x 20.32 cm
- ID Number
- catalog number
- accession number
- Credit Line
- University of Virginia
- Science & Scientific Instruments
- Data Source
- National Museum of American History
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