Bausch & Lomb introduced their Small Continental in 1891. This example is a New Continental BB of the sort introduced three years later. It is a compound monocular with coarse and fine focus, double nosepiece (one is missing), inclination joint, large rectangular stage with vulcanite top, sub-stage iris diaphragm, sub-stage two-sided mirror, and large horseshoe base. The inscription on the base reads “Bausch & Lomb Optical Co. / ROCHESTER, N.Y. & NEW YORK CITY.” The 16666 serial number, on a circular tag on the back of the base, indicates a date of 1894.
Ref: Henry Bausch, “New American Microscopes, made by Bausch & Lomb Optical Co., Rochester, N.Y.,” Proceedings of the American Society of Microscopists 13 (1891): 116-119.
“A New Continental Microscope,” Proceedings of the American Society of Microscopists 15 (Oct. 1894): 12-14.
Bausch & Lomb, Microscopes and Accessories (Rochester and New York, 1895), pp. 4-5.
Currently not on view
Object Name
date made
Bausch & Lomb Optical Company
Physical Description
brass (overall material)
rubber (overall material)
lead (overall material)
glass (overall material)
overall: 32.9 cm x 10.2 cm x 16 cm; 12 15/16 in x 4 1/32 in x 6 5/16 in
place made
United States: New York, Rochester
associated place
United States: New York, Rochester
ID Number
accession number
catalog 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
Bausch & Lomb Optical Company

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