Combustible Gas Indicator
date: label: date made
content: 1950's-1960's
name: label: maker
content: Mine Safety Appliances Company
notes: label: Description
content: Combustible Gas Indicator made by the Mine Safety Appliance Co. in Pittsburgh. The firm introduced the term Explosimeter in 1937 and filed for a trademark in 1940.
label: Description
content: Ref: Charles D. Jaffe, Dohrman H. Byers, and Andrew D. Hosey, eds., Encyclopedia of Instrumentation for Industrial Hygiene (Ann Arbor, 1956), pp. 161-164.
label: Description
content: American Conference of Governmental Industrial Hygienists. Committee on Air Sampling Instruments, Air Sampling Instruments (1966).
label: Description
content: Robert W. McAllister, “Air Testing Device,” U.S. Patent 2,234,499 (March 11, 1941), assigned to Mine Safety Appliance Co.
label: Location
content: Currently not on view
place: label: place made
content: United States: Pennsylvania, Pittsburgh
setName: label: See more items in
content: Medicine and Science: Medicine
label: See more items in
content: Health & Medicine
creditLine: label: Credit Line
content: Gift of American Conference of Governmental Industrial Hygienists
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: 1986.0837.07
label: catalog number
content: 1986.0837.07
label: accession number
content: 1986.0837
objectType: label: Object Name
content: combustible gas indicator
physicalDescription: label: Measurements
content: overall:;
label: Measurements
content: overall: 9 3/4 in x 7 3/4 in x 5 1/2 in; 24.765 cm x 19.685 cm x 13.97 cm