Sundials - World's Oldest Clocks

North American Sundial Society

Twin Falls  

Sundial 839
State/Province:  Idaho Country:  USA
Dial Type:  Analemmic Equatorial Condition:  Excellent
Latitude:   42° 35.052' N Longitude:   114° 28.224' W
Location:
  • Herrett Center for Arts and Science at the College of Southern Idaho. Sundial is located on the grounds of the Faulkner Planetarium
 
Description:
  • This beautiful stainless steel equatorial is approximately 1m in diameter with brass inlay for the equatorial time, divided down to the minute. This is also an analemmic sundial where the brass gnomon is cut out in the shape of an analemma allowing the user to directly correct for the equation of time. The analemma is marked with 365 individual date marks.

 
General Information:Inscription:
  • Owner: Herrett Center for Arts and Science
  • Instructions for rotating the analemmic gnomon to read precise time
  • Designer: Pete Swanstrom
  • Builder: JST Custom Fabrication, Inc, Boise, Idaho
  • Construction Date: 2006
 
References: Web Links:
  • Designer Peter Swantrom on his website notes "I was very proud of this design and applied for a patent in 1997. Later I learned from Mr. Fred Sawyer, President of NASS, that a similar sundial had been patented by Mr. Lloyd Mifflin of Germantown, PA in 1867. After finding this out I then received a Notice of Allowance from the U.S. Patent Office stating that my application had been approved and that for a mere $4,000 more they would be happy to issue me a patent

Last Revised: 2016-09-20 00:54