This is a compound monocular with push-pull focus, square stage, sub-stage mirror, and circular base. The “GUNDLACH MANHATTAN OPTICAL CO.” inscription refers to a firm that was formed in 1902 when the Gundlach Optical Company of Rochester, N.Y., acquired the Manhattan Optical Company of Cresskill, N.J., and that remained in business as such until 1926.
Ernst Gundlach (b. 1834) was a German optician and mechanic who arrived in the United States in 1872, became superintendent of the newly established microscope department of Bausch & Lomb in 1876, established the Gundlach Optical Company in 1878, and returned to Germany in 1900.
Ref: D. J. Warner, “Ernst W. Gundlach. German-American Optician,” Rittenhouse 10 (1995): 1-18.
Currently not on view
Object Name
date made
Gundlach, Ernst
case: 3 5/8 in x 10 5/8 in x 4 5/16 in; 9.2075 cm x 26.9875 cm x 10.95375 cm
microscope: 8 1/4 in x 3 1/4 in x 2 3/4 in; 20.955 cm x 8.255 cm x 6.985 cm
place made
United States: New York, Rochester
ID Number
catalog number
accession 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. C.B. Schmeltzer
Additional Media

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