Clapp-Eastham "Ferron" radio signal detector
date: label: date made
content: ca 1912
label: date made
content: c 1912
name: label: maker
content: Clapp-Eastham Co.
notes: label: Description (Brief)
content: Marked: "Ferron Detector, Clapp-Eastham Co. / Cambridge - Mass. / Licensed only for Private Use / Patented: 1-21, 11-17, 1908; 6-15, 9-7, 1909." A metallic crystal called "Ferron" is mounted in a nickel plated cup. Pressure on the crystal element is varied by means of a triple spring operated by a hard rubber knob. The base is polished Italian dove marble. Manufacturer claims detection of stations up to 1056 miles distant. Original price: $5.00 REF: Clapp-Eastham Co., Catalog M, page 15.
label: Location
content: Currently not on view
place: label: place made
content: United States: Massachusetts, Cambridge
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.320839
label: catalog number
content: 320839
label: accession number
content: 241556
objectType: label: Object Name
content: Detector
label: Object Name
content: receiver, radio
label: Object Name
content: radio receiver
label: Other Terms
content: Detector; Radio
physicalDescription: label: Measurements
content: overall: 3 1/4 in x 3 in x 5 1/2 in; 8.255 cm x 7.62 cm x 13.97 cm