Ward Leonard type P-28 "Vitrohm" theatre dimmer plate
date: label: date made
content: ca 1925
name: label: maker
content: Ward Leonard Electric Co.
notes: label: Description (Brief)
content: Vitrohm Theatre Dimmer. 2000 watts Max, 1680 watts Min., 115 volts, P-28 Type SN D54032. Built by Ward Leonard Electric Co., Mount Vernon, NY USA. Part of lighting system at the high school. Installed in 1923. Black metal construction with the electrical elements embedded in white porcelain on the back side. Has a single wiper arm with two sets of contacts, one on each end of the arm.
label: Location
content: Currently not on view
setName: label: See more items in
content: Work and Industry: Electricity
creditLine: label: Credit Line
content: from John Hanley High School, thru George Craig
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: EM.336955
label: catalog number
content: 336955
label: accession number
content: 1979.0875
objectType: label: Object Name
content: Light Dimmer
label: Object Name
content: switch
label: Object Name
content: dimmer switch
label: Other Terms
content: Light Dimmer; Components; Power and Lighting; Power and Lighting
physicalDescription: label: Measurements
content: overall: 11 cm x 39 cm; 4 5/16 in x 15 3/8 in