Sundials - World's Oldest Clocks

North American Sundial Society

St. Mary's City  

Sundial 374
State/Province:  Maryland Country:  USA
Dial Type:  Cylinder Condition:  Excellent
Latitude:   38° 11' N Longitude:   76° 26' W
Location:
  • St. Mary's College
    Turner Sailing Center, on the shore just off Route 5 before entering Trinity Church Rd which leads to St. Mary's College.
 
Description:
  • Cement cylinder dial with an inside radius of about 18 inches and a concrete gnomon 5 inches thick. The hour is read on the top 9summer) face in Roman numerals from VII to XVII; the scale is offset for longitude correction. The cylindrical inner face is stainless steel with an engraved grid of quarter hours and months, with an equation of time curve on every hour.
 
General Information:
  • Owner: St. Mary's College
  • Designer: Everett Merritt
  • Builder:
  • Construction Date: 1979
 
References:
  • NASS Compendium, Vol. 5 No. 3, p.9, Sept 1998