Stackpole & Brother Geodetic Transit

This transit marked "Stackpole & Bro. New York 1504" is one of eight identical instruments that the firm made for the United States expeditions to observe the 1874 transit of Venus across the face of the sun. It has a "broken" telescope that is viewed through one end of the horizontal axis, a graduated vertical circle, a cast-iron base, and a mechanism used to lift and reverse the telescope.
Currently not on view
Object Name
geodetic transit
date made
ca 1873
Stackpole and Brother
telescope aperture: 2 1/4 in; 5.715 cm
focal length: 30 in; 76.2 cm
place made
United States: New York, New York
ID Number
maker number
accession number
catalog 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
Additional Media

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