Otto Schuette, an engineer in Paris, designed this small brass photometer for determining the photometric value of a gas and the optimum length of photographic exposures. The “S / BREVETÉ / S.G.D.G.” inscription on the side indicates that there was a French patent, and that the French government did not guarantee the proper functioning of the device. There was an American patent as well. This example might have been acquired for the Smithsonian by Joseph Henry, the physicist who served as founding Secretary of the Institution.

Ref: Otto Schuette, “Photometre de Poche,” French Patent 108136 (1875).

Otto Schuette, “Improvement in Photometers,” U.S. Patent 165,764A (July 20, 1875).

“A New Pocket Photometer,” Boston Journal of Chemistry 11 (1876): 99.

Location: Currently not on view

See more items in: Medicine and Science: Physical Sciences


Exhibition Location:

Data Source: National Museum of American History

Id Number: PH.311770Catalog Number: 311770Accession Number: 152769

Object Name: photometer

Measurements: overall in case: 4 1/8 in x 2 1/2 in; 10.4775 cm x 6.35 cm


Record Id: nmah_1167273

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