tuning helix for wireless set
date: label: date made
content: ca 1920
notes: label: Description (Brief)
content: No extant markings. A tuning helix consisting of 8 turns of 1/2" metal stripping wound in coil form (12" diameter) across two wooden frame pieces. A binding post is employed on one side with a clip arrangement utilized for tapping anywhere along the coil. May be a homemade unit.
label: Location
content: Currently not on view
setName: label: See more items in
content: Work and Industry: Electricity
creditLine: label: Credit Line
content: from Franklin Wingard
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: EM.321319
label: accession number
content: 241556
label: catalog number
content: 321319
objectType: label: Object Name
content: tuning helix
physicalDescription: label: Measurements
content: overall: 16 1/8 in x 16 1/8 in x 2 in; 40.9575 cm x 40.9575 cm x 5.08 cm