double-action polarized reed type of tuned-reed course indicator
date: label: date made
content: 1928-05-16
notes: label: Location
content: Currently not on view
setName: label: See more items in
content: Work and Industry: Electricity
creditLine: label: Credit Line
content: U.S. Department of Commerce, National Bureau of Standards
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: EM.313615
label: catalog number
content: 313615
label: accession number
content: 188571
label: collector/donor number
content: X32
objectType: label: Object Name
content: Reed converter
label: Object Name
content: aircraft instrument
physicalDescription: label: Measurements
content: overall: 5 1/2 in x 3 1/2 in x 1 1/8 in; 13.97 cm x 8.89 cm x 2.8575 cm
label: Measurements
content: overall: 5 1/4 in x 3 5/8 in x 1 1/8 in; 13.335 cm x 9.2075 cm x 2.8575 cm