A chronograph is a watch that also records time intervals like a stopwatch. The earliest chronograph wristwatches appeared at the beginning of the 20th century. In 1902, Patek Philippe was awarded a patent for a “split-seconds chronograph” and in 1916 the watchmaker introduced its first complicated ladies’ wristwatch—it had a five-minute repeater. By 1923, Patek Philippe had created the first split-seconds chronograph wristwatch—its...Continue Reading