plug-in wavemeter coil unit
date: label: date made
content: ca 1925
notes: label: Description (Brief)
content: No extant makers marks. A plug-in coil for a wavemeter. Two phone-type tip plugs are affixed to a square type bakelite form upon which is wound a layer of green covered wore of about 22 gauge. Two binding posts are mounted on the form, together with a rotary 5-tap switch for varying the inductance of a coil. The taps are labeled 0, 3, 5, 8, and Open.
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.322020
label: catalog number
content: 322020
label: accession number
content: 241556
objectType: label: Object Name
content: radio coil
physicalDescription: label: Measurements
content: overall: 3 in x 3 5/8 in x 3 in; 7.62 cm x 9.2075 cm x 7.62 cm