Prism Binoculars
date: label: date made
content: around 1900
name: label: maker
content: Carl Zeiss, Inc.
notes: label: Description
content: Brass instrument covered, in large part, with dark leather. The exposed parts have a black japan finish. The objective lenses are 18 mm diameter. The eye end of the left prism housing is marked “Carl Zeiss, Jena / D.R.P.” in cursive script. That on the right is marked “Feldstecher / Vergr=6” (field glass with 6 power magnification), again in cursive. The right frame at the prism housing is marked “3903.” The eye cups are of some sort of vulcanite, and are separately adjustable. The inter-ocular distance is not adjustable. The “CALLAGHAN * LONDON” inscription on the eye end of the center post refers to the optical firm that served as Zeiss’s agent in England.
label: Description
content: Carl Zeiss, Jena, began making prism binoculars in 1894, based on the design developed by Ernst Abbe. This example dates from around 1900.
label: Location
content: Currently not on view
place: label: place made
content: Germany: Thuringia, Jena
setName: label: See more items in
content: Medicine and Science: Physical Sciences
label: See more items in
content: Science & Mathematics
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content: Optics
creditLine: label: Credit Line
content: Nicholas Grossman
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: 1983.0056.01
label: catalog number
content: 1983.0056.01
label: accession number
content: 1983.0056
objectType: label: Object Name
content: binoculars
physicalDescription: label: Measurements
content: overall: 1 3/4 in x 5 9/16 in x 3 1/2 in; 4.445 cm x 14.12875 cm x 8.89 cm
label: Measurements
content: overall: 1 3/4 in x 5 3/4 in x 3 1/2 in; 4.445 cm x 14.605 cm x 8.89 cm