Microscope
date: label: date made
content: 1880-1900
name: label: maker
content: James W. Queen & Co.
notes: label: Description
content: Microscope used by Charles Valentine Riley (1845-1895), a British-born entomologist who settled in the United States, worked for the Smithsonian Institution, and convinced Congress to create the United States Entomological Commission. It is a compound monocular with coarse and fine focus, triple nosepiece, inclination joint, circular stage, and sub-stage iris diaphragm; the sub-stage mirror is missing. The inscription on the tri-leg base reads “Queen & Co. Philada” and “1392.”
label: Description
content: This appears to be an Acme No. 3. Sidle & Poalk began making Acme microscopes in 1879. By 1880, the firm had moved from Philadelphia to Lancaster, and was trading as John W. Sidle & Co. and/or the Acme Optical Works. Queen & Co. took over production soon thereafter.
label: Description
content: Describing the Queen business in April 1888, a reporter for <i>Scientific American</i> noted that “The microscopes of the various ‘Acme’ patterns are made here, these being finished up in lots of from 25 to 50 of a kind; many of the parts are made up by hundreds at a time. As the best drawn steel pinions to be found in the market have proved to be of insufficient exactness to make a perfect rack and pinion movement, all the pinions and racks used here in the manufacture of microscopes are cut by fine machinery specially adapted to this work. To secure smoothness in motion, each rack and pinion is ‘ground in.’ The making and adjustment of the rack and pinion is one of the most vital points of a microscope; indeed, it is an art of itself.”
label: Description
content: Ref: James W. Queen & Co., <i>Priced and Illustrated Catalogue of Microscopes and Accessories</i> (Philadelphia, 1890), pp. 46-48.
label: Location
content: Currently not on view
place: label: place made
content: United States: Pennsylvania, Philadelphia
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: Division of Insects, National Museum of Natural History, Smithsonian Institution
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: MG.124271
label: catalog number
content: M-9780
label: accession number
content: 124271
objectType: label: Object Name
content: microscope
physicalDescription: label: Physical Description
content: metal (overall material)
label: Physical Description
content: glass (overall material)
label: Physical Description
content: brass (overall material)
label: Measurements
content: overall: 36.2 cm x 14.8 cm x 20.8 cm; 14 1/4 in x 5 13/16 in x 8 3/16 in