The Universal microscope that Bausch & Lomb introduced in 1884 was similar to the popular Investigator but larger and heavier and equipped with several new features. The basic stand with case cost $55; with two objectives and camera lucida it cost $80. This example of that sort. It is a compound monocular with coarse and fine focus, bullseye condenser attached to the body, large circular mechanical stage, inclination joint, sub-stage condenser and iris diaphragm, sub-stage two-sided mirror, and tri-leg base. The inscription on the stage reads “BAUSCH & LOMB OPTICAL CO.” That on the arm reads “PAT. OCT. 3 1876.”
Ref: Bausch & Lomb, Microscopes, Objectives and Accessories (Rochester, N.Y., 1884), pp. 20-22.
Ernst Gundlach, “Microscopes,” U.S. Patent 182,919 (Oct. 3, 1876).
Julius Wilhelm Behrens, The Microscope in Botany (Boston, 1885), pp. 21-22 and pl. xi.
Currently not on view
Object Name
date made
ca 1876-1884
Bausch & Lomb
Physical Description
glass (overall material)
brass (overall material)
overall: 33.8 cm x 18.7 cm x 22.9 cm; 13 5/16 in x 7 3/8 in x 9 in
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
Additional Media

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