Prism Binoculars

Description
This is a brass instrument with dark brown leather on the barrels. The left eye plate is marked “Carl Zeiss, Jena / D.R.P.” The right one is marked “Feldstech. . . / Vergr + 8. . .” The end of the central post is marked “O. Junck, Jena.” The objective lenses are 20 mm diameter. The eyepieces are separately adjustable as is the inter-ocular distance.
This an early example of the instrument that Ernst Abbe patented in 1893. The barrel on the right has been bisected to show the internal structure.
Location
Currently not on view
Object Name
binoculars
date made
1894-1908
maker
Zeiss
Measurements
overall: 1 7/8 in x 5 in x 4 1/8 in; 4.7625 cm x 12.7 cm x 10.4775 cm
place made
Deutschland: Thüringen, Jena
ID Number
PH*323151
catalog number
323151
accession number
250105
See more items in
Medicine and Science: Physical Sciences
Science & Mathematics
Optics
Data Source
National Museum of American History, Kenneth E. Behring Center

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