A tachymeter is a scale inscribed around the bezel of an analog watch, or sometimes printed on the dial, used to compute speed based on travel time or measure distance based on speed. It is particularly useful for measuring the speed of a moving object over a known distance or the distance covered at a constant speed.

How to Use a Tachymeter to Measure Speed:
1. Know the Distance: First, you need to know a fixed distance, typically one kilometer or one mile.
2. Start the Chronograph: As the moving object (e.g., a car) passes the starting point of your measured distance, start the chronograph function of your Jowissa watch. This is usually done by pressing the top pusher next to the crown.
3. Stop the Chronograph: Once the moving object reaches the end of the measured distance, stop the chronograph by pressing the same top pusher.
4. Read the Speed: Observe the position of the chronograph's central seconds hand on the tachymeter scale. The number on the tachymeter scale corresponding to the seconds hand's position indicates the speed in units per hour (kilometers per hour or miles per hour), based on the one-unit distance you measured.
- For example, if it took 30 seconds to travel one kilometer, the seconds hand would point to "120" on the tachymeter scale, indicating a speed of 120 kilometres per hour.

How to Use a Tachymeter to Measure Distance:
1. Know the Speed: You need to be traveling at a constant speed.
2. Start the Chronograph: As you begin timing, start the chronograph function of your Jowissa watch.
3. Time a Duration: Let the chronograph run for a specific amount of time, for example, 60 seconds.
4. Read the Distance: Note the number on the tachymeter scale corresponding to the position of the chronograph's central seconds hand. This number represents the distance traveled in the unit of speed you are using (kilometers or miles) during that specific time interval (e.g., per minute if you timed for 60 seconds).
- For example, if you are traveling at a constant speed and after 60 seconds the seconds hand points to "80" on the tachymeter scale, you have traveled 0.8 units of distance (kilometers or miles) in that minute.

The tachymeter function on your Jowissa chronograph is a testament to the precision and functionality inherent in our timepieces, blending traditional horological features with practical applications for everyday life.

Yes, quartz watches are known for "high accuracy." Because the quartz crystal vibrates at such a stable and high frequency, they are typically much more accurate than mechanical watches, often varying by only a few seconds per month.

Yes, these terms are often confused but mean different things. A Chronograph is a watch with a built-in stopwatch function (buttons to start, stop, and reset). A Chronometer is a specific certification given to a high-precision watch movement (usually mechanical) that has passed rigorous accuracy tests by COSC (Official Swiss Chronometer Testing Institute). A watch can be both, but "Chronograph" refers to the function, while "Chronometer" refers to the accuracy rating.

While possible, it is generally not recommended for battery-powered quartz watches. Leaving the chronograph function running continuously drains the battery significantly faster than standard timekeeping. To preserve battery life, we suggest stopping and resetting the chronograph hands to zero when you are not actively timing an event.

In modern parlance, the word 'chronograph' is used to refer to a timepiece which, along with telling the time, serves to measure short times using at least one additional hand. The latter can be started, stopped and reset to zero without disturbing the smooth running of the movement, by means of a control system, generally composed of pushbuttons. If the chronograph function is not associated with a watch as such, the instrument is simply referred to as a timer (or sometimes a stopwatch).

Technically speaking, the chronograph mechanism can be either built into the watch movement, or mounted on the latter in the form of an add-on module. A significant step was taken in 1816, when Parisian horologist Louis Moinet developed what he called a compteur de tierces.

The name Jowissa is a combination of the surname and lastname of the company founder Josef Wyss. He founded Jowissa in the village of Bettlach, Switzerland in 1951. Jowissa has been active and in business without interruption since then.

A watch can only be labeled "Swiss Made" if it meets strict legal standards set by the Swiss government. It requires that the movement is Swiss, the movement is cased up in Switzerland, and at least 60% of the production costs of a watch taken as a whole must from Switzerland. At Jowissa, we proudly assemble our watches by hand in Bettlach, Switzerland, ensuring every timepiece meets these high standards of quality and precision.