Field Glasses

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This is a brass instrument with a worn black japan finish. The objective lenses are 5 cm (2 inch) diameter, and the optics are very good. The “H. SANDERS MONTREAL” signature on both eye cups refers to Henry Sanders, a late 19th century dealer of optical and scientific instruments.
The “U.S. NAVY / R 11462” mark on one barrel means that this instrument was used during World War I. So too does the accompanying certificate signed by F.D. Roosevelt, Assistant Secretary of the Navy, acknowledging John W. Cooper’s loan of these glasses to the Navy at that time.
Currently not on view
overall: 2 9/16 in x 5 in x 7 7/16 in; 6.50875 cm x 12.7 cm x 18.89125 cm
ID Number
catalog number
accession number
Credit Line
Jeannette L. Marshall, Rosabell Cooper Leistra, and Dorothy M. Hennessy
World War I
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Medicine and Science: Physical Sciences
Science & Mathematics
Data Source
National Museum of American History