Postal Telegraph and Cable Co. polar relay
name: label: Maker
content: Western Union Corporation
notes: label: Location
content: Currently not on view
setName: label: See more items in
content: Work and Industry: Electricity
creditLine: label: Credit Line
content: from Western Union Corporation
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: EM.331424
label: accession number
content: 294351
label: accession number
content: 294351
label: catalog number
content: 331424
objectType: label: Object Name
content: Relay, Polar
label: Object Name
content: polar relay
physicalDescription: label: Physical Description
content: metal (part: material)
label: Physical Description
content: plastic (part: material)
label: Measurements
content: overall: 6 3/4 in x 3 3/4 in x 3 3/4 in; 17.145 cm x 9.525 cm x 9.525 cm