variable inductance
date: label: date made
content: ca 1916
notes: label: Description (Brief)
content: A square wooden mount with a dual secondary coil rotating in the center, dual fixed primary coils set on a cylinder, 4 brass legs, contacts on top. Secondary coil is on a vertical axis. No obvious maker's marks.
label: Location
content: Currently not on view
setName: label: See more items in
content: Work and Industry: Electricity
creditLine: label: Credit Line
content: from William Dubilier?
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: ZZ.RSN81625U40
objectType: label: Object Name
content: Inductance, Variable
label: Object Name
content: variable inductance
label: Other Terms
content: Inductance, Variable; Components; Radio and Television; Radio and Television
physicalDescription: label: Measurements
content: overall: 4 in x 2 3/4 in x 1 3/4 in; 10.16 cm x 6.985 cm x 4.445 cm