Double Siren

Double Siren

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This is a Helmholtz-type double siren driven by a 110 volt D.C. motor. The “Max Kohl A.G. Chemnitz” inscription indicates a date after 1908. A second tag reads “Imported by James G. Biddle / Philadelphia, U.S.A.” From Rutgers University
Ref: Max Kohl A.G., Physical Apparatus (Chemnitz, 1911), vol. 2, pp. 422-423.
Currently not on view
Object Name
double siren
Max Kohl
place made
Germany: Saxony, Chemnitz
overall: 20 1/2 in x 10 1/2 in x 7 in; 52.07 cm x 26.67 cm x 17.78 cm
overall: 20 1/2 in x 6 11/16 in x 8 1/4 in; 52.07 cm x 16.98625 cm x 20.955 cm
ID Number
accession number
catalog number
Credit Line
Gift of the Department of Physics, Rutgers University
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Medicine and Science: Physical Sciences
Data Source
National Museum of American History
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