Sundials - World's Oldest Clocks

North American Sundial Society

Franklin Center  

Sundial: 139
State/Province:  Pennsylvania Country:  USA
Dial Type:  Equatorial Condition:  Excellent
  Latitude:   39° 54.000' N Longitude: 75° 27.000' W
  • Franklin Mint Museum
    1398 W. Baltimore Pike (US 1)
    Media, PA
    Opposite Valley Rd., in backyard
  • A modernistic equatorial dial about 6 feet in diameter. The analemma shaped gnomon casts Eastern standard time onto a wide metal semicircle band. The hours with 10-minute marks are inscribed on the center of the equatorial band. This unique sundial tells the time, indicates the approximate day of the month and projects the zodiacal constellation signs as they are aligned with the sun and the earth in this era. It is accurate to within two minutes.
General Information:
  • Owner: Franklin Mint
  • Designer: Gilroy Roberts
  • Builder: