Westinghouse direct current ammeter
date: label: date made
content: 1900
name: label: maker
content: Westinghouse Electric and Manufacturing Company
notes: label: Description (Brief)
content: This ammeter consists of an instrument mounted on a marble base with a glass top. Marked: "Westinghouse Elec. & M'f'g. Co./Pittsburgh, PA. / Ammeter No. 2910 / Capacity 2500 Amp. Type DC". It is a gravity controlled, plunger type ammeter, in which a soft iron plunger is drawn into a solenoid carrying the current. In this specimen the plunger and its mechanical connections to the movable system are missing. The entire current to be measured was necessarily brought to the switchboard and to the instrument.
label: Location
content: Currently not on view
setName: label: See more items in
content: Work and Industry: Electricity
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.313281
label: catalog number
content: 313281
label: accession number
content: 181342
objectType: label: Object Name
content: Ammeter
label: Other Terms
content: Ammeter; Measuring Devices
physicalDescription: label: Measurements
content: overall: 5 1/2 in x 17 in x 12 in; 13.97 cm x 43.18 cm x 30.48 cm