Sundials - World's Oldest Clocks

North American Sundial Society

Tucson  

Sundial 14
State/Province:  Arizona Country:  USA
Dial Type:  Horizontal Condition:  Excellent
Latitude:   33° 20.358' N Longitude:   110° 58.902' W
Location:
  • Tohono Chul Park
 
Description:
  • A 25 inch circular engraved horizontal dial in a large irregular stone. Surrounding the dial on the stone are zodiacal signs and a beautiful engraved drawing of the surrounding mountains. The designer, John Carmichael, calls these dials "horizontal string heliochronometers" since the gnomon is a brass cable held very straight under tension from a heavy counterweight which is suspended from a brass hinged lever.
 
General Information:
  • Owner:
  • Designer: John Carmichael, Jr.
  • Builder:
  • Construction Date: 1998