Westinghouse standard voltmeter
date: label: date made
content: 1909
label: date made
content: ca 1893
name: label: maker
content: Westinghouse Electric & Manufacturing Co.
notes: label: Description (Brief)
content: This voltmeter consists of a vertical plunger-type (solenoid) potential indicator having a scale with a single index mark to which the instrument pointer may be set by means of an adjustable vertical rheostat, calibrated in volts. Numbered every 5 downward from 90 to 120. It is mounted in a wooden case with a glass top. Marked, "Westinghouse Electric & Mfg. Co., Lang & Shallenberger [serial number] 1909". Brass plate in back reads: " Westinghouse Elec. & Mfg Co. Pittsburgh Pa. / Patented Lauge Jul. 12 '87, Jul. 31 '88 Aug. 12 '90/ Lauge & Shallenberger / July 12 '87" Stamped in frame: " No.1909". One of these instruments was provided for use in a station as a standard. Not regularly used in the circuit, but could be connected in the circuit at any time to check the accuracy of the regular service meter used to maintain permanent accuracy and uniform service. Cover not in place, pointer bent & broken off.
setName: label: See more items in
content: Work and Industry: Electricity
label: Exhibition
content: Lighting a Revolution
label: Exhibition Location
content: National Museum of American History
creditLine: label: Credit Line
content: from Weston Electrical Instrument Corp., thru John H. Miller
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: EM.313277
label: catalog number
content: 313277
label: accession number
content: 181342
objectType: label: Object Name
content: Standard Voltmeter
label: Object Name
content: voltmeter
physicalDescription: label: Measurements
content: overall: 5 1/2 in x 10 in x 17 in; 13.97 cm x 25.4 cm x 43.18 cm