Sundials - World's Oldest Clocks

North American Sundial Society

Mt. Vernon  

Sundial: 167
State/Province:  Virginia Country:  USA
Dial Type:  Horizontal Dial Condition:  Poor
  Latitude and Longitude: 38° 42.500' N  77° 5.200' W
Location:
  • Center of courtyard, west front of house.
 
Description:
  • A bronze octagonal horizontal dial about 12 inches on a side. Original dial is badly worn and virtually illegible; this original is now stored inside the museum. A 6 inch replica of the dial is located on a pedestal in the center of a circular lawn. This replica has an 8-pointed compass rose in the center and Roman numerals from 5 AM to 7 PM. The hour intervals are graduated into two-minute increments, with Arabic numerals 20-40-60 at appropriate places between the hour lines. Pictures of both the replica and the original dial are in the Image Archive.
 
General Information:
  • Owner: Mount Vernon Ladies' Association
  • Designer:
  • Builder:
  • Construction Date: 1765-1785
 
References:
  • Digital image of original dial is courtesy of the Mount Vernon Ladies' Association.

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