Spectrometer
date: label: date made
content: 20th century
name: label: maker
content: Franz Schmidt & Haensch
notes: label: Description
content: This is a solid and substantial instrument of iron and brass. The horizontal circle, 4.25 inches diameter, is graduated by half degrees and read, by verniers with magnifying lenses, to single minutes of arc. The prism is missing. The "Franz Schmidt & Haensch" "Berlin, S." inscription on the circle refers to an optical instrument firm that began in business in 1864, and that trades today as Schmidt & Haensch.
label: Description
content: Franz Schmidt & Haensch described this as a small spectrometer according to Victor von Lang. Von Lang (1838-1921) was a noted crystallographer in Vienna who described the form in the late 1870s.
label: Description
content: This example was used at Lafayette College in Easton, Pa.
label: Description
content: Ref. <i>Special Catalogue of the Collective Exhibition of Scientific Instruments Exhibited by the Deutsche Gesellschaft für Mechanik und Optik</i> (Berlin, 1893), pp. 97-98.
label: Description
content: German Educational Exhibition, World’s Fair St. Louis 1904, <i>Scientific Instruments</i> (Berlin, 1904), p. 124.
label: Location
content: Currently not on view
place: label: place made
content: Germany: Berlin
topic: label: Subject
content: Science & Scientific Instruments
setName: label: See more items in
content: Medicine and Science: Physical Sciences
label: See more items in
content: Science & Mathematics
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content: Optics
creditLine: label: Credit Line
content: Lafayette College
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: 1981.0826.02
label: catalog number
content: 1981.0826.02
label: accession number
content: 1981.0826
objectType: label: Object Name
content: spectrometer
physicalDescription: label: Measurements
content: overall: 10 1/4 in; 26.035 cm
label: Measurements
content: overall: 10 5/8 in x 9 1/4 in x 16 3/4 in; 26.9875 cm x 23.495 cm x 42.545 cm