Mechanical Watches

  • The source of energy is a MAINSPRING
  • The time is measured out by a BALANCE WHEEL and HAIRSPRING
  • The transmission is carried out by a GEAR TRAIN to the hands
  • The display to give the time is the DIAL & HANDS

Manual watches are physical wound through the crown (winder) to power the mainspring of the watch movement.

An automatic watch is the same as any manual watch with an added rotating disc attached to the movement which allows the mainspring to be powered through a person’s wrist movement and can also be physically wound via the crown just like any manual watch.

Most modern mechanical (both manual & automatic) watches have a daily timing tolerance of between -5 and +25 seconds per day (on average +/- 2 minutes per week), for Chronometers the timing tolerance is +/- 6 seconds per day (on average +/- 1 minute per week). They also have a power reserve of approximately 36 – 42 hours. As the mainspring looses power the timing may exceed these tolerances, which for automatics can indicate it is not getting enough daily power, for this reason we would advise to occasionally manually wind the watch (approx once every 48hr / twice a week - ONLY IF NECESSARY) in order to maintain the minimum time loss.

As a mechanical watch can gain or loose time in various positions, it is therefore regulated in 5 different positions, for example:

Dial Up = +10sec
Dial Down = - 5sec Therefore for this example this watch
Crown Down = + 8sec has an average timing
Crown Up = - 2sec of + 5 seconds per day.
Crown Right = - 6sec

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