It is generally agreed that the first stopwatch was invented by a British horologist named Samuel Watson, who, in 1695, and at the request of a surgeon named John Flory, created a pocket watch for measuring a patient's pulse that was accurate to one-fifth of a second. Early in the 18th century, clockmaker and fellow Brit, George Graham, set the accuracy bar to one-sixteenth of a second, and by 1816, a French watchmaker named Louis Moinet had...Continue Reading