Stackpole & Brother Geodetic Transit

Description
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.
Location
Currently not on view
date made
ca 1873
maker
Stackpole and Brother
place made
United States: New York, New York
Measurements
telescope aperture: 2 1/4 in; 5.715 cm
focal length: 30 in; 76.2 cm
ID Number
PH.327719
maker number
1504
accession number
283654
catalog number
327719
Credit Line
U.S. Department of Defense, U.S. Naval Observatory
See more items in
Medicine and Science: Physical Sciences
Measuring & Mapping
Surveying and Geodesy
Data Source
National Museum of American History, Kenneth E. Behring Center

Comments

Add a comment about this object