Adjustable spark gap from amateur station 3BV
date: label: date made
content: ca 1913
notes: label: Description (Brief)
content: Adjustable spark gap from amateur station 3BV. A hard rubber base holding two brass posts, each of which has a connecting port, and an adjustable horizontal arm. Each arm has a brass contact on one end and a plastic knob on the opposite end. The distance between the arms' contacts can be set by the operator. 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.325328
label: catalog number
content: 325328
label: accession number
content: 252994
objectType: label: Object Name
content: Spark Gap, Adjustable
label: Object Name
content: spark gap
label: Other Terms
content: Spark Gap, Adjustable; Components; Radio and Television; Radio and Television
physicalDescription: label: Measurements
content: overall: 3 1/2 in x 6 in x 2 5/8 in; 8.89 cm x 15.24 cm x 6.6675 cm