Question

The sundial is a device for measuring

Answer 1

A sundial is a device that tells the time of day when there is sunlight by the apparent position of the Sun in the sky. In the narrowest sense of the word, it consists of a flat plate (the dial) and a gnomon, which casts a shadow onto the dial.

Answer 2

A sundial is a device that tells the time of day when there is sunlight by the apparent position of the Sun in the sky.