Binocular Telescope
date: label: date made
content: ca 1880
notes: label: Description
content: This is a brass instrument with center focus, and center adjustment for inter-ocular distance. The objective lenses are 40 mm diameter. The length is 29 cm (closed). Each eye tube is marked “LEVY, DREYFUS & CO / NEW YORK.” These came to the Smithsonian in 1907. A note in the file reads: “Prussian Army Field Glass used in 1885 by the [U.S.] Geological Survey but now discarded because of the small field of view.
label: Description
content: Levy, Dreyfus & Co. was in business in New York City in the 1890s, advertising as opticians and wholesale importers.
label: Location
content: Currently not on view
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: U.S. Geological Survey
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: PH.247931
label: catalog number
content: 247931
label: accession number
content: 47736
objectType: label: Object Name
content: Field Glasses
physicalDescription: label: Measurements
content: overall: 2 3/8 in x 11 1/2 in x 4 13/16 in; 6.0325 cm x 29.21 cm x 12.22375 cm