Bausch & Lomb introduced their Large Continental in 1891, noting that “no efforts have been spared to make the stand the most complete and fitted with all modern improvements and appliances.” This example is a compound monocular with coarse and fine focus, triple nosepiece (but only one objective), inclination joint with clamp (the handle of which is made of celluloid), large circular stage, sub-stage Abbe condenser and iris diaphragm, and support for sub-stage mirror (the mirror is missing). The instrument is brass, the draw tube is nickel plated, and the stage is covered with vulcanized rubber. The inscription on the horseshoe base reads “Bausch & Lomb Optical Co. / ROCHESTER, N.Y. & NEW YORK CITY / 14317.” The serial number indicates a date around 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.
Bausch & Lomb, Microscopes and Accessories (Rochester and New York, 1895), pp. 8-10.
Henri Van Heurck, The Microscope (London, 1893), pp. 141-142.
Currently not on view
Object Name
date made
Bausch & Lomb Optical Company
Physical Description
brass (overall material)
lead (overall material)
rubber (overall material)
plastic (overall material)
overall: 34 cm x 11.4 cm x 18.2 cm; 13 3/8 in x 4 1/2 in x 7 5/32 in
place made
United States: New York, Rochester
associated place
United States: New York, Rochester
ID Number
accession number
catalog number
Science & Mathematics
Science & Scientific Instruments
See more items in
Medicine and Science: Medicine
Data Source
National Museum of American History, Kenneth E. Behring Center
Credit Line
Bausch & Lomb Optical Company

Visitor Comments

Add a comment about this object

**Please read before submitting the form**

Have a comment or question about this object to share with the community? Please use the form below. Selected comments will appear on this page and may receive a museum response (but we can't promise). Please note that we generally cannot answer questions about the history, rarity, or value of your personal artifacts.

Have a question about anything else, or would you prefer a personal response? Please visit our FAQ or contact page.

Personal information will not be shared or result in unsolicited e-mail. See our privacy policy.

Enter the characters shown in the image.