unmarked geissler tube with external envelope
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 International Business Machines, Inc., William J. Hammer Collection
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: EM.320442
label: catalog number
content: 320442
label: accession number
content: 241402
objectType: label: Object Name
content: geissler tube
label: Other Terms
content: Discharge Tube; Electron Tubes
physicalDescription: label: Measurements
content: tube: 19 in x 2 1/2 in x 1 3/4 in; 48.26 cm x 6.35 cm x 4.445 cm