Circular slide rule for radio use
date: label: date made
content: ca 1912
notes: label: Location
content: Currently not on view
setName: label: See more items in
content: Work and Industry: Electricity
creditLine: label: Credit Line
content: from Charles C. Harris
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: 1977.0521.06
label: catalog number
content: 1977.0521.06
label: accession number
content: 1977.0521
objectType: label: Object Name
content: slide rule
physicalDescription: label: Measurements
content: overall: 1/2 in x 7 in; 1.27 cm x 17.78 cm