It was an old fashion water clock.
As a method of telling time, the Sun could be considered the oldest clock in the world. Just by looking at its position relative to the ground, early humans could tell if it was morning, midday, evening, and nighttime. The sundial was developed as a more accurate way to tell this time, and eventually the water clock, mechanical clock and digital clock came along as steadily more accurate versions.
It is the sundial.
Jacobi
Clocks and timing are arbitrary and based on human concepts. There is no 'world clock', so it could never have stopped (or started).
Egypt
the world's first flight over a large body of water in a heavier-than-air craft.
The first alarm clock was powered by water where if the water was at a certain height, it would go off with a beeping sound.
The first mention that I know of a water clock is a reference by Cicero to a Roman land owner who timed the performance of this slaves by the turns of a water wheel.
The first robot in 270 BC was an organ and water clock made by Ctesibus who was a Greek Engineer. The water clock had figures that moved.
in ancient china many many years ago why was the water clock invented?
The first water clock was used in Egypt in 1500 BC. They found one in the tomb of Amenhotep I.
The history of the first alarm clock dates back the Greek philosopher Plato, around 428-348 BC. It was a water clock with an alarm signal similar to a water organ.
Egyptians and Babylonians
Chinese water clock
The first clock in the New World was made by Benjamin Banneker. He was an African American. His clock struck on the hour, made astronomical observations, and kept time for 40 years.
Peter Heinlein from Germany in 1510 invented the first wall clock in the world.
no
sundial, sand-clock, candle-clock,water-clock and simple pendulum