Barometer
date: label: date made
content: after 1927
name: label: maker
content: Central Scientific Company
notes: label: Description
content: The Central Scientific Company, a major purveyor of apparatus for educational, industrial and scientific use, introduced a new mercury barometer in the early 1920s. Recognizing the flaws inherent in instruments in which the tube and scales were mounted on a wooden back, Central Scientific boasted that their Cenco-Improved barometer featured a tube “completely enclosed in hexagonal brass tubing, to which are attached the metric and British scales.” And, instead of the leather bag cistern found in most Fortin style barometers, Cenco’s new cistern was made of a plastic material that would not leak, and was designed so as to allow fine adjustment of the mercury level.
label: Description
content: This example represents a further refinement of the form introduced in the late 1920s. The inscriptions read “Central Scientific Co.” and “1,353,482” and “1,632,084.” New, it cost $35.
label: Description
content: Ref: Central Scientific Company, <i>Catalog F. Physical Apparatus and Instruments</i> (Chicago, 1923), p. 43.
label: Description
content: Central Scientific Company, <i>Scientific Instruments, Laboratory Apparatus, and Supplies</i> (Chicago, 1941), pp. 1152-1153.
label: Description
content: Arndt M. Krause, "Mercurial Barometer," U.S. Patent 1,353,482 (1920).
label: Description
content: Paul Klopsteg and Herman Paul Sachse, "Mercurial Barometer," U.S. Patent 1,632,084 (1927).
label: Location
content: Currently not on view
place: label: place made
content: United States: Illinois, Chicago
setName: label: See more items in
content: Medicine and Science: Physical Sciences
label: See more items in
content: Barometers
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content: Measuring & Mapping
creditLine: label: Credit Line
content: U.S. Military Academy
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: PH.316421
label: accession number
content: 223721
label: catalog number
content: 316421
objectType: label: Object Name
content: mercury barometer
physicalDescription: label: Measurements
content: overall: 35 1/4 in x 1 3/4 in; 89.535 cm x 4.445 cm