Bausch & Lomb introduced their Large Student’s Microscope in 1877, selling it for $90. Ernst Gundlach, a Prussian immigrant who had become superintendent of the firm’s newly established microscope department in 1876, was largely responsible for the form. This example is of that sort. It is a compound monocular with coarse and fine focus, rectangular stage, trunnion, sub-stage aperture ring with three diaphragms, sub-stage mirror, and curvaceous base. The body and tube are nickel-plated brass; the stage is heavy glass; the base is black iron. The inscription on the tube reads “BAUSCH & LOMB OPTICAL CO. ROCHESTER, N.Y.” That on the arm reads “Pat. Oct. 3. 1876.”
Ref: Bausch & Lomb, Price List of Microscopes (Rochester, 1877), p. 7.
Ernst Gundlach, “Improvement in Microscopes,” U.S. Patent 182,919 (Oct. 3, 1876).
John Phin, Practical Hints on the Selection and Use of the Microscope (New York, 1877), plate II.
Currently not on view
date made
ca 1876
Bausch & Lomb
place made
United States: New York, Rochester
Physical Description
glass (overall material)
metal (overall material)
overall: 43.2 cm x 15.7 cm x 17 cm; 17 in x 6 3/16 in x 6 11/16 in
ID Number
accession number
catalog number
Credit Line
Bausch & Lomb Optical Company
Science & Scientific Instruments
See more items in
Medicine and Science: Medicine
Science & Mathematics
Data Source
National Museum of American History


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