Waltham Eight-Day Clock

Lindbergh brought this clock with him on his transatlantic flight in the Spirit of St. Louis. His simple dead reckoning approach to navigation did not require an accurate clock. “Eight-day” refers to how long the clock would run on a full winding. 

Caption:
The clock from the Spirit of St. Louis.
Type: Artifact
Image Date: January 4, 2013
Credit: National Air and Space Museum, Smithsonian Institution.
Origin: National Air and Space Museum, Smithsonian Institution.
Creator: Eric Long
NASM2013-00135
Navigators & Inventors
Innovations
Navigation Methods
 
The clock from the Spirit of St. Louis.