Chronograph

For historical works with this name, see Chronographia.
An Omega Speedmaster Professional, which is commonly regarded as one of the most iconic chronographs ever produced.
Gallet MultiChron Astronomic (c. 1959)—complex mechanical chronograph with 12-hour recording capabilities, automatic day, date, month, and moon phase display.
Tianjin Sea-Gull ST1901 chronograph movement (based on the Swiss Venus 175)
Escapement Time Quartz Pilot Watch containing a Japanese movement
Miyota caliber 6S21 quartz chronograph movement
Quartz chronograph and its movement
Citizen Atessa Eco-Drive ATV53-3023 analog-digital chronograph with 4 area Radio Controlled reception (North America, Europe, China, Japan)

A chronograph is a specific type of watch that is used as a stopwatch combined with a display watch. A basic chronograph has hour and minute hands on the main dial to tell the time, a small seconds hand to tell that the watch is running, and a seconds hand on the main dial usually equipped with a sweeping movement for precision accompanied by a minutes sub dial for the stopwatch. Another sub dial to measure the hours of the stopwatch may also be included on a chronograph. The stopwatch can be started, stopped, and reset to zero at any time by the user by operating pushers usually placed adjacent to the crown. More complex chronographs often use additional complications and can have multiple sub-dials to measure more aspects of the stopwatch such as fractions of a second as well as other helpful things such as the moon phase and the local 24-hour time. In addition, many modern chronographs include tachymeters on the bezels for rapid calculations of speed or distance. Louis Moinet invented the chronograph in 1816 for use in tracking astronomical objects.[1][2] Chronographs soon found a widespread use in artillery fire in the mid to late 1800s. Over time, the chronograph found its use to be in several different fields, such as aircraft piloting, auto racing, diving and submarine maneuvering.

Since the 1980s, the term chronograph has also been applied to all digital watches that incorporate a stopwatch function.

  1. ^ "Worldtempus, Louis Moinet The chronograph's inventor". Archived from the original on 2017-02-21. Retrieved 2017-02-20.
  2. ^ Elizabeth Doerr, Forbes, History Rebooted: The Chronograph's Inventor is...Louis Moinet!.