Slide tunder and crystal detector
date: label: date made
content: c 1915
label: date made
content: ca 1915
notes: label: Description (Brief)
content: No extant maker's marks. Specimen is an early example of a slide tuner and associated crystal detector. Three spring slides vary coil inductance. Knob from one slider is missing. Associated binding posts on wooden base. Crystal detector is enclosed in glass.
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.321148
label: catalog number
content: 321148
label: accession number
content: 241556
objectType: label: Object Name
content: radio receiver
label: Object Name
content: crystal radio
physicalDescription: label: Measurements
content: overall: 4 1/2 in x 18 1/4 in x 5 1/4 in; 11.43 cm x 46.355 cm x 13.335 cm