Sundials - World's Oldest Clocks

North American Sundial Society

NASS_2010_GottesmanThe 2010 Sawyer Dialing Prize goes to William L. Gottesman of Burlington, Vermont, "In recognition of his committment to innovation and high precision design in sundials which combine tradition with 21st century advances."  Bill is designer of the Renaissance Sundial, a spiral sundial that uses curved mirrors to show the time to within 30 seconds.  His dial is available at

Bill collaborated with Kate Pond to design the Equatorial Band Sundial, dedicated during the 2010 NASS conference at Champlain College with the title "Come Light, Visit Me."  On a smaller scale, but with no less precision, Bill worked with Fred Sawyer to realize the Sawyer Equant Sundial that will show both solar and clock time.  To "advertise" the 2010 NASS conference, Bill even designed the back end of his car as a sundial, using the radio antenna as a gnomon.

As in past years, Bill was presented with $200 to fund a sundial project of his choice and a custom made Spectra Sundial by Jim Tallman of Artisan Industrials: