0 a device used outside, especially in the past, that consists of a thin piece of metal attached to a flat surface printed with numbers. It shows the time by the metal making a shadow on the surface as the sun moves across the sky. --
1 a device that uses the light of the sun to show the time of day --
He also wrote on mechanical devices like the astrolabe and sundial.
Over the doorway in the porch is a sundial, and the date 1775 is engraved in the apex of its gable.
The location features sculptures, a sundial, interpretive signage, a naked eye observatory and a ceremonial fire pit.
Reference has been made to sundials.
He spoke of a sundial.
About 4,000 years ago sundials were developed to show, more accurately than just the guesswork of looking at the heavens, the divisions of the day as the sun moved round.
I remember as a boy looking at a sundial and finding that, having set it correctly, after about a week or a month it moved.
They are trying to judge it with a sundial set the wrong way round.
