Fauth Heliotrope (telescopic)

This Instrument consists of a refracting telescope surmounted by a round mirror that can reflect a beam of light along the optical axis of the telescope. A screw base allows it to be attached to any tree or post. Fauth advertised a heliostat of this sort in 1877, describing it "As made by us for the United States Coast Survey." This example was made before 1887 when G. N. Saegmuller began putting serial numbers on Fauth instruments. New, it cost $30. The U. S. Geological Survey was established in 1879, and transferred this instrument to the Smithsonian in 1907. The signature reads "FAUTH & CO. WASHN D.C." and "U.S.G.S. No 6."
Ref: Fauth, Catalogue of Astronomical and Surveying Instruments (Washington, D.C., 1877), p. 43.
Currently not on view
Object Name
heliotrope (telescopic)
Fauth & Co.
place made
United States: District of Columbia, Washington
ID Number
catalog number
accession number
Measuring & Mapping
Surveying and Geodesy
See more items in
Medicine and Science: Physical Sciences
Surveying and Geodesy
Data Source
National Museum of American History, Kenneth E. Behring Center
Fauth & Co.. Catalogue of Astronomical and Surveying Instruments, 1877

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