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3500 BCE
OBELISK
The obelisk clock was invented by the Egyptians around 3500 B.C
They were large obelisks that cast a shadow from sun. Buy they did not works at night or no cloudy days, and they were not every accurate -
2000 BCE
Water clock
The water clock was invented in 2000 B.C. This device was basically a bowl with a hole in the bottom. Again they were not very accurate and would not work in freezing weather -
14
Mechanical clock
The mechanical clock was invented in the 13th and 14th centuries and was developed in Europe. -
1088
Mechanical water clock
The mechanical water clock was invented in 1088 in China. The creator of this clock is "Su sung" and had an hour hand only because it was not accurate enough to have a minute hand -
1300
The sandglass clock
The sandglass clock was invented in 1300. This clock was first used in Europe. Sand fell through a small hole in a glass tube. They are still in use today to measure small amounts of time