Sundials are one of the oldest tools for measuring time. The Egyptians used a shadow stick or shadow clock as early as 1500 BC. The vertical stick or "gnomon" marked the time of day by the length and position of the stick's shadow. Gnomon in Greek means "the one that knows."
ON HOLD Until 4/17 for Jessica Z.
To learn more about the history of sundials, please visit our blog.