crystal radio signal detector
date: label: date made
content: ca 1918
notes: label: Description (Brief)
content: No extant maker's marks. A glass enclosed crystal detector with galena element; spring cat's whisker with adjustable knob. Two binding posts on wooden base.
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.321915
label: catalog number
content: 321915
label: accession number
content: 241556
objectType: label: Object Name
content: radio receiver
label: Object Name
content: crystal radio
physicalDescription: label: Measurements
content: overall: 1 1/2 in x 3 1/2 in x 1 3/4 in; 3.81 cm x 8.89 cm x 4.445 cm