Type 2-D tuned-reed aircraft navigational indicator
notes: label: Location
content: Currently on loan
setName: label: See more items in
content: Work and Industry: Electricity
creditLine: label: Credit Line
content: from the United States Bureau of Standards, Dept. of Commerce
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: EM.313607
label: accession number
content: 188571
label: catalog number
content: 313607
objectType: label: Object Name
content: Course Indicator
label: Object Name
content: aircraft instrument
physicalDescription: label: Measurements
content: overall: 4 in x 1 1/2 in x 2 1/4 in; 10.16 cm x 3.81 cm x 5.715 cm