Tachymeter is a common feature on some watch bezel. It is primarily used to measure the speed at which the wearer is moving over a fixed period of time. Tachymeters are often found on chronograph watch So they have a stopwatch function in addition to the time reading function. It is often used by athletes, race car drivers and aviation professionals to calculate speed, distance or time taken.

what is a tachymeter

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 Tachymeter bezel

   A bezel is a ring of material that holds the watch crystal in place and is part of the case. Different bezels have different functions. For example,Aviation watches have a GMT complication that can be adjusted by rotating the bezel so that they can read the time in different time zones. Tachymeter bezels, however, are fixed and generally have the word Tachymeter,UNITES PER HOUR printed on the bezel as well as a scale from 60 to 500 or higher. This design maintains the practicality of the tachymeter function while bringing a sleek, seamless aesthetic.

How does tachymeter work

  1. Select a kilometer distance.
  2. Press button A at the starting point.
  3. Press button A again at the end point.
  4.    4、Read the 60 – 400 mph value on the outer ring of the dial indicated by the 60-second timer; that is the speed value.
  1. Press button B to reset the timer to zero.

   The number on the bezel is the one used to visually check the hourly speed. It is to measure the speed in one kilometer when moving above 60km/h. Starting from the second hand at 12 o’clock and observing the corresponding position of the stopwatch when a kilometer has been traveled, you can know the hourly speed at that time. For example, if the stopwatch stops at 100, it means that the speed at that time was 100km/h.

   When the speed is lower than 60km/h, the tachymeter can not be used directly, unless the low speed scale value is increased.

What is the benefits of tachymeter

      One of the main benefits of tachymeters is their ability to provide accurate speed measurements. This feature is especially useful for athletes and motorsports enthusiasts who need to track their speed during a race or training session. In addition, tachymeter watches have a variety of timing functions. Utilizing the chronograph function and tachymeter scale allows the user to accurately calculate time, speed, or distance, making it a valuable tool for a variety of outdoor activities and professional work.

 What are the 3 dials on a tachymeter watch?

   A typical tachymeter watch consists of three sub dials that measure seconds, minutes, and hours. Typically the third dial has a chronograph function that allows the user to start, stop, and reset the stopwatch function of the watch. By understanding the purpose and function of each dial, the user can fully utilize the tachymeter function on the watch.

Tachymeter vs chronograph

     A tachymeter can be used to measure how fast the wearer of a watch is moving in a specific amount of time. Most tachymeters can measure from 7 to 60 seconds. A chronograph is a stopwatch used to measure a period of time. A chronograph typically has two or three small second dials and push buttons that start and stop the chronograph without interfering with the normal timekeeping of the watch.

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