Western Electric type 121-A vacuum tube
name: label: maker
content: Western Electric
notes: label: Location
content: Currently not on view
setName: label: See more items in
content: Work and Industry: Electricity
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: ZZ.RSN80550U05
objectType: label: Object Name
content: Ballast
label: Object Type
content: ballast
label: Other Terms
content: Ballast; Resistance
physicalDescription: label: Physical Description
content: composition (overall material)
label: Physical Description
content: glass (overall material)
label: Physical Description
content: metal (overall material)
label: Measurements
content: ballast: 10 cm x 3.5 cm; 3 15/16 in x 1 3/8 in