The clock is a very fundamental tool for people because it permits to measure the time. In the antiquitues the time was measured by the clessidra: this tool was invented by the egyptians.
The first mechanical clocks were invented in the average. Now we have not only mechanical clocks but electronic clocks too but I prefer the mechanical ones. These days I bought one, what do you think about it? The brand isn't very known but it's full of quality.