Sundial 1149
- Dial City: Vernon
- Dial State/Province: British Columbia
- Dial Country: Canada
- Lat: 50° 17.400' N
- Dial Nr: 1149
- Dial Type: Heliochronometer
- Dial Access: Private
- Lon: 119° 12.012' W
- Dial Owner: Marc-André Nadeau
- Dial Designer: Pilkington & Gibbs/Marc-André Nadeau
- Dial Maker: Marc-André Nadeau
- Dial Date: January 5, 2026
- Location:
- Although this dial has at least one physical location, it is universally available for free on the internet. Questions can be addressed to: marc.aka@shaw.ca 5587 Hartnell Road, Vernon, BC
- Description:
- 3D-Printed replica of an early 20th-century Pilkington & Gibbs Heliochronometer. In 1906, G. Gibbs applied for a patent for a novel sundial design—the Universal Equinoctial Mean Time Heliochronometer. This sundial represented a technical pinnacle of early modern sundials, combining mechanical ingenuity with practical timekeeping capabilities. Its integration of latitude, longitude, and Equation of Time corrections via a mechanical cam assembly allowed users to determine mean time with remarkable accuracy for its era. Notice on the time mark is a straight line, not an analemma curve. The Equation of Time transfer from solar time to civil time was, as noted, uses a patented mechanical cam.
Last Update:
2026-03-11 22:54:57