Radio spark coil
date: label: date made
content: ca 1915
notes: label: Description (Brief)
content: Unmarked radio spark coil for small transmitter. Gap is connected across binding posts on top of unit. Interrupter circuit on side, terminal units are missing from binding posts. Reference: similar to Manhattan spark coil no. 460, except for interrupter and case construction. See also William B. Duck Catalog, 1916, page 101.
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.321076
label: catalog number
content: 321076
label: accession number
content: 241556
objectType: label: Object Name
content: spark coil
physicalDescription: label: Measurements
content: overall: 3 3/4 in x 5 5/8 in x 3 3/8 in; 9.525 cm x 14.2875 cm x 8.5725 cm