vacuum tube voltmeter
date: label: date made
content: ca 1935
notes: label: Description (Brief)
content: Unlabeled voltmeter unit with a Readrite meter installed. Indicating meter is stamped: "Readrite Meter Works / Bluffton, Ohio, U.S.A." Unit is a vacuum tube voltmeter employing a 0-8 volt DC movement and a type 30 triode. Battery terminals are on rear of instrument. Unlabeled binding posts are on the front panel together with a toggle switch and filament rheostat. Hinged top.
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.321212
label: catalog number
content: 321212
label: accession number
content: 241556
objectType: label: Object Name
content: voltmeter
physicalDescription: label: Measurements
content: overall: 7 5/8 in x 4 1/4 in x 6 3/4 in; 19.3675 cm x 10.795 cm x 17.145 cm