What are the common timing tools?

Sundial, clepsydra, stopwatch, hourglass, pocket watch, etc. A sundial is a device that displays time according to the position of the sun. It is a great invention of human beings in the field of astronomical timing, which has been used for thousands of years. A sundial usually consists of a dial and a dial, and the time is measured and divided by the projection direction of the sun.

Common timing tools are sundial, clepsydra, stopwatch, hourglass, pocket watch, etc.

Sundial:

A sundial is a device that displays time according to the position of the sun. It is a great invention of human beings in the field of astronomical timing, which has been used for thousands of years. A sundial usually consists of a dial and a dial, and the time is measured and divided by the projection direction of the sun.

Humans have used sundials for a long time. The ancient Babylonians began to use it 6,000 years ago, and China in the Zhou Dynasty 3,000 years ago. The sundial can display not only the time of day, but also the solar terms and months. Of course, its shortcomings are also obvious. It is huge and cannot be used when there is no sunshine, such as cloudy days and cloudy nights.