Sundials - World's Oldest Clocks

North American Sundial Society


Sundial: 112
State/Province:  South Carolina Country:  USA
Dial Type:  Vertical Dial Condition:  Excellent
  Latitude and Longitude: 33° 14.627' N  81° 21.894' W
  • In front of Barnwell County Courthouse, 141 Mainstreet, Barnwell, SC 29812
  • This vertical cast iron dial is a rectangle approximately 30x40 inches mounted on a pole. The Barnwell sundial was a gift to the city in Sept 1858 from state senator J.D. Allen, and has continuously shown civil time - accurate to within two minutes - for over 150 years. The vertical dial has an Equation of Time list of corrections for each week, giving the correction in minutes and seconds. A canon ball from the civil war sits atop the sundial. The dial is surrounded by a low circular wall with bronze statuary of a boy walking on the wall and a girl at some distance, looking at the dial.

    Claimed as "The only free-standing, vertical sundial in the US that was keeping standard time before it was even invented."
General Information:Inscription:
  • Owner: City of Barnwell
  • Equation of Time on Dial
    Plaque: "Obtained from Mr. O.B. Haselton, ironmonger, Charleston ...and gifted to the city by J.D. Allen"
  • Designer: unknown
  • Builder: O.B. Haselton, ironmonger, Charleston
  • Construction Date: dicated Sept 1858
References: Web Links:

Last Revised: 2018-06-17 12:38

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