Answer:
It was Peter Henlein, a locksmith from Nuremburg, Germany, who is credited with the invention of modern-day clock and the originator of entire clock making industry that we have today. The one who Invented the first clock in history was Christiaan Huygens, however, is usually credited as the inventor. He determined the mathematical formula that related pendulum length to time (about 99.4 cm or 39.1 inches for the one second movement) and had the first pendulum-driven clock made. It was started around the start of 14th century, The pendulum clock was first created in 1656.
