a simple, yet accurate, instrument, which tells time by the movement of the shadow a pointer casts upon a dial, which marks the hours of the day
a timepiece that has the fewest moving parts
a tool for estimating time of day during sunlit hours
A device for telling time of day by the shadow which sunlight produces on the instrument. See gnomon.
A device that uses a rod's shadow on the ground to indicate the solar time of day.
instrument of many different forms for finding the time from the position of the sun, usually by measuring the position of a shadow, see article on the sundial.
A sundial is an ancient clock that measures time by the position of the sun. The most commonly seen designs, such as the 'ordinary' or standard garden sundial, cast a shadow on a flat surface marked with the hours of the day. As the position of the sun changes, the time indicated by the shadow changes.