Bausch & Lomb designed the Model microscope (No. 520) “in compliance with a generally expressed demand for a simple, low-priced and well-made instrument, which is adapted to every grade of work.” The basic stand with wooden case cost $25; with two objectives and camera lucida it cost $45. This example is of that sort. It is a compound monocular with coarse and fine focus, trunnion, circular stage, sub-stage mirror, and Y-shaped base. The tube and stage are brass; the stand is black iron. An inscription on the arm reads “PAT. OCT. 3, 1876 / PAT. OCT. 13, 1885.” An inscription on the objective reads “Bausch & Lomb Optical Co. Rochester, N.Y.”

This instrument has been customized for petrographic work. To that end, there is a double chambered box in the tube for holding an analyzer. An opening in the nosepiece, just above the objective, is designed to hold a Bertrand lens. The polarizer, which should be below the stage, is missing.

Ref: Bausch & Lomb, Illustrated Catalogue (Rochester, 1884), pp. 12-13.

Sharp & Smith, Catalogue of Surgical Instruments (Chicago, 1889), pp. 858-859.

Date Made: ca 1887

Maker: Bausch & Lomb Optical Company

Location: Currently not on view

Place Made: United States: New York, RochesterAssociated Place: United States: New York, Rochester

Subject: Science & Scientific Instruments


See more items in: Medicine and Science: Medicine, Microscopes, Science & Mathematics


Exhibition Location:

Credit Line: Bausch & Lomb Optical Company

Data Source: National Museum of American History

Id Number: MG.M-12195Accession Number: 272522Catalog Number: M-12195272522.10

Object Name: microscopeOther Terms: microscope; Monocular

Physical Description: steel (overall material)brass (overall material)glass (overall material)black (overall color)Measurements: overall: 34.4 cm x 14.4 cm x 18.8 cm; 13 17/32 in x 5 21/32 in x 7 13/32 in

Guid: http://n2t.net/ark:/65665/ng49ca746a9-258e-704b-e053-15f76fa0b4fa

Record Id: nmah_1060240

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