This is a compound monocular with coarse and fine focus, inclination joint, triple nose piece, two (of three) objectives, square stage, large sub-stage condenser, sub-stage mirror, horse-shoe base, and wooden case. The “BETZ SPECIAL / CHICAGO, ILL” inscription refers to Frank S. Betz, a medical supply dealer who, by 1907, had moved to Hammond, Indiana. The “New Betz Microscope” that he offered in 1909 was said to be “a result of several years of close observation as to the best and cheapest instrument for the general wants of the physician which would at the same time combine many of the desirable features of higher priced instruments.”
This example was owned by John Grant Evans, a physician in New Hartford, Iowa.
Ref: Frank S. Betz Co., Catalogue of Surgical Instruments, Hospital Furniture, and Supplies (1909), p. 87.
Currently not on view
Object Name
date made
ca 1900
Betz, Frank S.
Physical Description
wood (case material)
brass (microscope material)
glass (microscope material)
microscope: 34.7 cm x 8.6 cm x 14.2 cm; 13 11/16 in x 3 3/8 in x 5 9/16 in
case: 31.3 cm x 19.3 cm x 10.4 cm; 12 5/16 in x 7 5/8 in x 4 1/8 in
place made
United States: Illinois, Chicago
ID Number
catalog number
accession 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
From Mr. William P. Evans
Additional Media

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