Leonardo da Vinci did not invent the pendulum clock. The first mechanical clocks were invented around the start of the 14th century. Da Vinci did improve on the design of the pendulum clock making it more accurate. The Da Vinci design was different because it included separate mechanisms, one for minutes, and another for hours. The clock operated by using a small metal ball, connected to a string, which wraps around a brass post, then unwinds repeating on to another brass post. By lengthening or shortening this string it would adjust the speed of the time. A counterweight acts as the clocks power source.Read the Review
If you have comments or questions please post them here.