Microscope
date: label: date made
content: ca 1887
name: label: maker
content: Bausch & Lomb Optical Company
notes: label: Description
content: 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.”
label: Description
content: 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.
label: Description
content: Ref: Bausch & Lomb, <i>Illustrated Catalogue</i> (Rochester, 1884), pp. 12-13.
label: Description
content: Sharp & Smith, <i>Catalogue of Surgical Instruments</i> (Chicago, 1889), pp. 858-859.
label: Location
content: Currently not on view
place: label: place made
content: United States: New York, Rochester
label: associated place
content: United States: New York, Rochester
topic: label: Subject
content: Science & Scientific Instruments
setName: label: See more items in
content: Medicine and Science: Medicine
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content: Microscopes
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content: Science & Mathematics
creditLine: label: Credit Line
content: Bausch & Lomb Optical Company
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: MG.M-12195
label: accession number
content: 272522
label: catalog number
content: M-12195
label: catalog number
content: 272522.10
objectType: label: Object Name
content: microscope
label: Other Terms
content: microscope; Monocular
physicalDescription: label: Physical Description
content: steel (overall material)
label: Physical Description
content: brass (overall material)
label: Physical Description
content: glass (overall material)
label: Physical Description
content: black (overall color)
label: Measurements
content: 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