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The Universal microscope that Bausch & Lomb introduced 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 is of that sort. It is a compound monocular with coarse and fine focus, large circular stage, inclination joint, sub-stage condenser and iris diaphragm, sub-stage mirror, and tri-leg base. The inscription on the arm reads “PAT. OCT. 3 1876 / PAT. Oct. 13, 1885.” The inscriptions on the stage read “Bausch & Lomb Optical Co.” and “HENRY KAHN SAN FRANCISCO” (this refers to the dealer). There is an bracket at the bottom that we do not understand.
Ref: Bausch & Lomb, Price List of Microscopes, Objectives and Accessories (Rochester, N.Y., 1884), pp. 20-21.
Ernst Gundlach, “Microscopes,” U.S. Patent 182,919 (Oct. 3, 1876).
Edward Bausch, “Microscope,” U.S. Patent 328,277 (Oct. 13, 1885).
Currently not on view
date made
ca 1885
place made
United States: New York, Rochester
Physical Description
glass (overall material)
brass (overall material)
overall: 37.7 cm x 18.3 cm x 22.7 cm; 14 13/16 in x 7 3/16 in x 8 15/16 in
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


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