Sundials - World's Oldest Clocks

North American Sundial Society


Sundial: 62
State/Province:  Ontario Country:  Canada
Dial Type:  Helioscope Condition:  Good
  Latitude:   43° 0.354' N Longitude: 81° 16.517' W
  • University of Western Ontario In Front of the Observatory and Astronomy Building
  • A brass Pilkington-Gibbs heliochronomer aligned to the celestial equator. Rotate the helioscope until the sun shines from the upper hole to the lower plate, then read the time from an accompanying dial. The Pilkington-Gibbs dial includes a patented cam mechanism to adjust for the Equation of Time.
General Information:
  • Owner: University of Western Ontario
  • Designer:
  • Builder: