De Forest type SW wave meter
date: label: date made
content: ca 1919
name: label: maker
content: De Forest Radio Telephone & Telegraph Co.
notes: label: Description (Brief)
content: De Forest type SW wave meter. Markings: front panel reads: Wave Meter / Type S.W. / Wave Lengths 100-3000 Meters / Manufactured by / De Forest Radio Tel. & Tel. Co. / New York. Unit consists of a variable capacitor with a 0-100 dial scale, to be used in conjunction with a plug-in inductance. A buzzer and lamp are included. Resonance is indicated by maximum lamp brilliance. Reference: Similar to SW-100. Wavemeter illustrated on pages 11-12. De Forest Radio Receiving Apparatus Catalog C, 1919.
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.320691
label: accession number
content: 241556
label: catalog number
content: 320691
objectType: label: Object Name
content: wave meter
label: Object Name
content: wavemeter
physicalDescription: label: Measurements
content: overall: 8 in x 10 1/2 in x 8 in; 20.32 cm x 26.67 cm x 20.32 cm