Smithsonian - National Museum of American History, Behring Center

 
Physical Sciences Collection - Surveying and Geodesy

Browse Makers | Browse Instruments | Index

Back
 

Geodetic Transit - click to enlarge

Geodetic Transit - click to enlarge

Click photos to enlarge.

Geodetic Transit

Catalogue number:
PH*327719

Inscriptions:
"Stackpole & Bro. New York 1504"

Dimensions:
telescope 2.25 inches aperture, about 30 inches focal length

Discussion:

This is one of eight identical instruments that Stackpole & Brother made for the United States expeditions to observe the transit of Venus across the face of the sun in 1874. 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.

Further Information:

Geodetic Transit
Stackpole

Back