Stopwatch 1736
Englishman George Graham (1673-1751) He first used the term stopwatch for a small portable pendulum. He also invented in 1715 the device "walking with an anchor obstacle", and in 1721 he invented the mercury compensating mechanism. Another English watchmaker John Harrison (1693-1776) made the first sea chronometer which he finally set up in 1761.
Previous | Next |