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.

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.

Ref. Special Catalogue of the Collective Exhibition of Scientific Instruments Exhibited by the Deutsche Gesellschaft für Mechanik und Optik (Berlin, 1893), pp. 97-98.

German Educational Exhibition, World’s Fair St. Louis 1904, Scientific Instruments (Berlin, 1904), p. 124.

Date Made: 20th century

Maker: Franz Schmidt & Haensch

Location: Currently not on view

Place Made: Germany: Berlin

Subject: Science & Scientific Instruments


See more items in: Medicine and Science: Physical Sciences, Science & Mathematics, Optics


Exhibition Location:

Credit Line: Lafayette College

Data Source: National Museum of American History

Id Number: 1981.0826.02Catalog Number: 1981.0826.02Accession Number: 1981.0826

Object Name: spectrometer

Measurements: overall: 10 1/4 in; 26.035 cmoverall: 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

Guid: http://n2t.net/ark:/65665/ng49ca746ae-2850-704b-e053-15f76fa0b4fa

Record Id: nmah_1464554

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