The Vitesse 803 comes equipped with a chronograph. A basic chronograph has an independent sweep second hand; it can be started, stopped, and returned to zero by successive pressure on the stem. Other chronographs use additional complications and can have multiple independent hands to measure seconds, minutes, hours and even tenths of a second. Louis Moinet invented the chronograph in 1816 for use in tracking astronomical objects.Chronographs were also used heavily in artillery fire in the mid to late 1800s. More modern uses of chronographs involve piloting airplanes, car racing, diving and submarine maneuvering.
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