Clapp-Eastham receiving variometer
date: label: date made
content: ca 1908
name: label: maker
content: Clapp-Eastham Co.
notes: label: Description (Brief)
content: Variable inductance for receiving radio signals; manufactured by Clapp-Eastham Company. 1904 patent date on label. A wooden case with two 10-position sweep switches on the side, Ground and Antenna connectors. A cylindrical coil with a single 10-position sweep switch slides along two rails and adjusts the tuning.
label: Location
content: Currently not on view
setName: label: See more items in
content: Work and Industry: Electricity
creditLine: label: Credit Line
content: from the United States Bureau of Standards, Dept. of Commerce
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: EM.313536
label: catalog number
content: 313536
label: accession number
content: 188571
label: collector/donor number
content: 12
objectType: label: Object Name
content: variable inductance
label: Object Name
content: inductance
label: Object Name
content: variometer
physicalDescription: label: Measurements
content: overall: 5 1/4 in x 8 1/4 in x 6 1/2 in; 13.335 cm x 20.955 cm x 16.51 cm