The oldest water clock in the history

The water watch.

The oldest water clock that dates back to the era of the New Kingdom, the eighteenth Dynasty 1391: 1353 BC from the era of Amenhotep III, where it was used in the Temple of Amun in Karnak" 

 

 is made of alabaster and contains two

 Ten columns or lines carved from the inside, corresponding to hours

  Night and water was flowing through a very small manhole made

  In the middle of the bottom "

  "To find out the time one had to look inside the basin to monitor the water level and read the time according to the nearest hole or line and the outer surface of the water clock is decorated with shapes and texts that show symbols for some planets and constellations and give a list of protective spirits for each of the ten days of the ancient Egyptian week. The middle record is occupied by polar stars and some  Nitro and animals "

         It is now preserved in the Egyptian Museum .