duplex air gauge
date: label: date made
content: ca. 1920
notes: label: Location
content: Currently on loan
setName: label: See more items in
content: Work and Industry: Transportation, Railroad
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: TR.315961
label: accession number
content: 222402
objectType: label: Object Name
content: Duplex Air Gauge