Time out. Here's a quiz to test your brain.
What were early clocks powered by?
What are the most accurate clocks ever made?
How did prehistoric people tell time?
How old are sundials?
How did hour glasses and water clocks tell time?
Did the first clocks have hands?
In what century were hands added to clocks?
What clocks were introduced in the mid-1800's?
When did digital clocks become popular?
In the 1980's the was added into clock mechanisms.
Once Upon a Time