This low power binocular is a Spencer Model 55 with rack and pinion focus on the body and fine focus in the eyepieces, rotating triple nosepiece, large rectangular stage with adjustable diaphragm, large sub-stage mirror, and wooden case. The inscription reads “SPENCER / BUFFALO / U.S.A.” The 129614 serial number indicates a date of 1934.
Ref: Spencer Lens Co., Low Power Binocular Microscopes (Buffalo, 1935), p. 6.
Currently not on view
Object Name
date made
Spencer Lens Company
Physical Description
metal (overall material)
steel (overall material)
glass (overall material)
plastic (overall material)
black (overall color)
wood (case material)
metal (case material)
steel (case material)
cloth (case material)
overall: 32.5 cm x 20.2 cm; 12 25/32 in x 7 15/16 in
case: 41 cm x 21 cm x 24.2 cm; 16 5/32 in x 8 9/32 in x 9 17/32 in
place made
United States: New York, Buffalo
ID Number
MG*M-11418 [dup1]
accession number
catalog number
Science & Scientific Instruments
Science & Mathematics
See more items in
Medicine and Science: Medicine
Data Source
National Museum of American History, Kenneth E. Behring Center
Credit Line
Division of Marine Invertebrates, National Museum of Natural History, Smithsonian Institution
Additional Media

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