Roller-Smith DC milliammeter
name: label: Maker
content: Western Union Corporation
label: maker
content: Roller-Smith Co.
notes: label: Location
content: Currently not on view
place: label: place made
content: United States: Pennsylvania, Bethlehem
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.331774
label: accession number
content: 294351
label: accession number
content: 100-077
label: accession number
content: 294351
label: accession number
content: 294351
label: catalog number
content: 331774
objectType: label: Object Name
content: Ammeter
label: Object Name
content: milliammeter
physicalDescription: label: Physical Description
content: wood (part: material)
label: Physical Description
content: metal (part: material)
label: Physical Description
content: glass (part: material)
label: Physical Description
content: paper (part: material)
label: Measurements
content: overall: 6 3/4 in x 6 5/8 in x 4 5/8 in; 17.145 cm x 16.8275 cm x 11.7475 cm