Chronographs were developed to measure elapsed time, adding a practical timing function to the wristwatch. Early examples were used in aviation, motorsport, science, and industry, where precise short-interval timing mattered.
Dial layouts, pushers, and movements evolved quickly through the 20th century, resulting in a wide range of designs and mechanical approaches. Chronographs reflect both technical problem-solving and the changing demands placed on watches beyond simple timekeeping.
