Ajax "All Vernier" rheostat
notes: label: Description (Brief)
content: Ajax "All Vernier" rheostat. Exterior side sweep. "Ajax All Vernier Rheostat / Pat. Apl'd. For / Cambridge, Mass." An asbestos insulator is between the wire and the aluminum drum.
label: Location
content: Currently not on view
setName: label: See more items in
content: Work and Industry: Electricity
creditLine: label: Credit Line
content: from Franklin Wingard
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: EM.241556.524
label: accession number
content: 241556
label: catalog number
content: 241556.524
objectType: label: Object Name
content: variable resistance
physicalDescription: label: Measurements
content: overall: 3 in x 2 3/8 in; 7.62 cm x 6.0325 cm