water clock

The ancient Egyptians invented the first water clocks and sundials more than 3,500 years ago.

Rocky comes to know his land through the “water clock” he keeps, knowing what time of the year it is by water’s presence or absence.

That tells you that it was a water clock because they’re going there to fill up buckets to put the fire out.

They did not have mechanical clocks, but they had sundials and water clocks.

On the left side the Dutch physicist Christian Huyghens is depicted demonstrating the first pendulum clock, which he invented in 1656, and on the right side there is a Roman senator holding a water clock.