Sundials - World's Oldest Clocks

North American Sundial Society

San Diego  

Sundial: 19
State/Province:  California Country:  USA
Dial Type:  Vertical Dial Condition:  No Longer Exists
  Latitude and Longitude:   
Location:
  • San Diego State University campus. Wall of Chemistry- Geology Bldg
 
Description:
  • Above the southwest entrance of the Chemistry-Geology Building is a vertical declining dial built by Richard L. Threet in 1979. The dial uses thin aluminum tubing as a gnomon to cast shadows on a ring of hour and half hour lines approximately 9 feet in diameter. The lines were originally painted black on the white concrete wall with only the 9 am, 12 noon, 3 pm and 6 pm lines boldly numbered. Since then the dial has lost all but the 12.

    DIAL DESTROYED BY BUILDING REMODELING
    Per Richard Threet 12/2/2006
 
General Information:
  • Owner: San Diego State University
  • Designer: Richard L. Threet
  • Builder:
  • Construction Date: 1979
 

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