This is a compound monocular with push-pull and fine focus, square stage trunnion, sub-stage diaphragm, sub-stage mirror, and wooden box with accessories. The “Franz Schmidt / & / Haensch / BERLIN / No 161” inscription on the V-shaped base is that of a firm that specialized in optical instruments for sugar analysis.
William Irvin Wolfley (b. 1838) was a graduate of Kenyon College and the University of Pennsylvania Medical School who served as a surgeon in the U.S. Army during the Civil War. He went to Europe in 1865, for further medical training in Paris and Berlin, and probably acquired this microscope at that time. He then practiced medicine in Cincinnati and then Columbus, Ohio.
Currently not on view
Object Name
date made
ca 1868
Wolfley, William Irvin
Franz Schmidt & Haensch
Physical Description
brass (overall material)
glass (overall material)
steel (overall material)
overall: 25.5 cm x 10.2 cm x 13 cm; 10 1/16 in x 4 in x 5 1/8 in
place made
Deutschland: Berlin, Berlin
associated place
United States: Ohio
ID Number
accession number
catalog number
Science & Scientific Instruments
See more items in
Medicine and Science: Medicine
Science & Mathematics
Data Source
National Museum of American History, Kenneth E. Behring Center
Credit Line
Mrs. Elizabeth F. Wolfley, et. al.
Additional Media

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