Sundials - World's Oldest Clocks

North American Sundial Society

Did you know that Thomas Jefferson designed sundials and thought that a book of trigonometric tables was one of his most valuable books?  And that Benjamin Franklin made a "modest" proposal for an extension of the noon-day sundial canon?  Join  Fred Sawyer, eminent sundialist and president of the North American Sundial Society as he explores sundial history with the United States founding fathers George Washington, Benjamin Franklin and Thomas Jefferson in three video presentations.  The videos are taken from a presentation he made two years ago at the annual meeting of  the NASS in Indianapolis.  See these videos at:

Learn more about sundials, their construction and their history by joining the North American Sundial Society.  Go to and join now.

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