Zinc spark gap for transmitter
date: label: date made
content: ca 1919
notes: label: Description (Brief)
content: Zinc spark gap for transmitter used in amateur station 3BV. A ceramic base on which are mounted two spark gap assemblies, each having a zinc electrode on an adjustable plunger mechanism with contact ports and a plastic knob. No extant 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 Paul G. Watson
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: EM.325500
label: catalog number
content: 325500
label: accession number
content: 252994
objectType: label: Object Name
content: spark gap
physicalDescription: label: Measurements
content: overall: 2 1/2 in x 5 1/2 in x 2 3/4 in; 6.35 cm x 13.97 cm x 6.985 cm