Leeds & Northrup crystal signal detector with mirror galvanometer
name: label: Maker
content: Western Union Corporation
notes: label: Location
content: Currently not on view
setName: label: See more items in
content: Work and Industry: Electricity
creditLine: label: Credit Line
content: from Western Union Corporation
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: EM.333154
label: accession number
content: 294351
label: collector/donor number
content: 100-314
label: accession number
content: 294351
label: catalog number
content: 333154
objectType: label: Object Name
content: Detector, Signal
label: Object Name
content: radio receiver
label: Object Name
content: crystal radio