loose coupler for radio circuit
date: label: date made
content: ca 1915
label: associated date
content: 1912
name: label: associated user
content: unknown
notes: label: Description (Brief)
content: Unmarked variable inductance. Primary coil (7" dia.) has two sliders which lead to binding posts on top of wooden frame. Secondary coil (6" dia.) slides on two frame rods which terminate in binding post connectors. A 10 point multi-tap switch is affixed to one end of secondary coil and may be changed to vary inductance of secondary coil. Both coils appear to be coated with shellac.
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.321019
label: catalog number
content: 321019
label: accession number
content: 241556
objectType: label: Object Name
content: variable inductance
label: Other Terms
content: variable inductance; Radio
physicalDescription: label: Measurements
content: overall: 10 in x 32 in x 9 1/2 in; 25.4 cm x 81.28 cm x 24.13 cm