amateur radio frequency meter
date: label: date made
content: 1939
name: label: maker
content: National Radio Co.
notes: label: Description (Brief)
content: A home-made frequency meter housed on a black metal box with controls on the front panel. The tuning dial is marked "National" and reads from 0 to 100. A holder on top has a calibration curve and operating instructions.
label: Location
content: Currently not on view
setName: label: See more items in
content: Work and Industry: Electricity
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: EM.336528
label: catalog number
content: 336528
label: accession number
content: 1977.0896
objectType: label: Object Name
content: Calibrator, Frequency
label: Object Name
content: frequency calibrator
label: Other Terms
content: Calibrator, Frequency; Radio
physicalDescription: label: Measurements
content: overall: 8 1/8 in x 8 in x 14 in; 20.6375 cm x 20.32 cm x 35.56 cm