Spectroscope
notes: label: Description
content: Small direct vision spectroscope with a “WILLIAM J. HAMMER, CONSULTING ELECTRICAL ENGINEER, 26 CORTLANDT, NEW YORK” inscription in the case. William J. Hammer (1858-1934) worked with Thomas Edison at Menlo Park and had wide interests in electrical science and technology. By 1890 Hammer was an established consulting engineer in New York City. It is unknown how and when the spectroscope ended up in Hammer’s collection. He may have purchased it for use or it may have been given to him for evaluation.
label: Description
content: Ref: Robert S. Harding, “Register of the William J. Hammer Collection, c. 1874-1935, 1955-1957,” 1986.
label: Description
content: United Press Syndicate, “William J. Hammer: Consulting Electrical Engineer,” no. 1038, ca 1910.
label: Location
content: Currently not on view
topic: label: Subject
content: Science & Scientific Instruments
setName: label: See more items in
content: Medicine and Science: Physical Sciences
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content: Science & Mathematics
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content: Optics
creditLine: label: Credit Line
content: International Business Machines Corporation
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: PH.320566
label: catalog number
content: 320566
label: accession number
content: 241402
objectType: label: Object Name
content: spectroscope
physicalDescription: label: Measurements
content: case: 4 in; 10.16 cm
label: Measurements
content: overall in case: 3 5/8 in x 1 in; 9.2075 cm x 2.54 cm