What is the error of the Observatory certification

The manufacturer will give a backup of the test data to the consumer, but the brand will not pay special attention to the environment and status of the test. As a result, consumers often misunderstand that chronometers require the same data within the -4 to +6 second range, regardless of whether they are worn or not.

What is the error standard of a Tissot Chronometer mechanical watch Tissot Chronometer mechanical watches are watches certified by the Swiss Chronometer Observatory. According to the Swiss Chronometer Observatory certification standards, the permissible daily average error ranges from -4 seconds to +6 seconds. And this error is calculated according to a 24-hour cycle, that is, 86,400 seconds per day.

What is the difference between a chronometer-certified mechanical watch In addition to the above-mentioned chronometer-certified mechanical watches, the daily allowable error of -4 to +6 seconds, the movements of these certified chronometer watches are generally professionally repolished, relatively speaking, .

What is the error standard of a Tissot Chronometer mechanical watch Tissot Chronometer mechanical watches are watches certified by the Swiss Chronometer Observatory. According to the Swiss Chronometer Observatory certification standards, the permissible daily average error ranges from -4 seconds to +6 seconds. And this error is calculated according to a 24-hour cycle, that is, 86,400 seconds per day.

What is the difference between a chronometer-certified mechanical watch In addition to the above-mentioned chronometer-certified mechanical watches, the daily allowable error of -4 to +6 seconds, the movements of these certified chronometer watches are generally professionally repolished, relatively speaking, .

The permissible range of daily average error is -4 seconds to +6 seconds.

The Astronomical Observatory is an institution specializing in astronomical observation and astronomical research, and most of the world's astronomical observatories are located on mountains. Each observatory has some instruments and equipment for observing celestial phenomena, mainly astronomical telescopes. It's a great place to see the stars.

Ancient Egypt, 2600 BC.

For the observation of Sirius.

the establishment of the world's earliest known observatory to date; 2000 BC, Babylon.

An observatory was also established. About 2,500 years ago, China also began to have astronomical observatories, which are called Qingtai, Lingtai, and Observatory. In ancient times, the astronomical observatories of many countries were often not only places for astronomical observations, but also used astrology.

and therefore the observatory was generally controlled by the ruler.

In the 15th and 16th centuries, some European astronomers began to build their own observatories, the most famous of which is Denmark.

Astronomer Tycho in Copenhagen in 1576.

The established observatory, which was equipped with the most advanced astronomical instruments of the time. After the invention of the astronomical telescope, the observatory was developed. In 1667, France established the Paris Observatory; In 1675, the Greenwich Observatory was established in England.

In the 20th century, the development of astrophysics further facilitated the development of observatories, many of which were equipped with large-aperture reflecting telescopes. As of 2009, there are about 400 major observatories in the world.

Chronometer-certified watches with miskey imitation areMechanical watchesThe error is between -4 seconds and +6 seconds per day.

During the 16-day test, after three temperature environments and five azimuth accuracy and azimuth differences, movements larger than 20 mm must have an average daily range of -4 to +6 seconds, and those less than 20 mm must be controlled within -4 to +8 seconds.

Related introductions. Chronometer certification is an indicator and standard, which is an accurate appraisal of the watch by the Swiss official chronometer testing organization (which is often referred to as COSC), and the watch that passes the test will be engraved with the word "chronometer" on the surface, after all, this is also where the brand can boast.

The error standards of the chronometer's mechanical watch are as follows:

The error standard of a chronometer's mechanical watch refers to the accuracy standard of a mechanical watch, which is usually used for the detection and calibration of a mechanical watch. According to the international standard ISO3159, the error standard of a mechanical watch is that the average daily error of a mechanical watch should be between -4 seconds and +6 seconds, the maximum error of a mechanical watch should not exceed 30 seconds, the swing of a mechanical watch should be between 180 degrees and 360 degrees, the impact of temperature changes on the error of a mechanical watch should be between seconds and +seconds, and the impact of the position change of a mechanical watch on the error should be between seconds and +seconds. These standards are specific to the day-to-day use of mechanical watches, which need to be customized and calibrated to specific needs if higher precision mechanical watches are required.

Features of the Chronometer Chronometer Mechanical Watch:

1. The precision of the chronometer's mechanical watch is very high, usually within a few seconds per day, and can even reach the level of less than 1 second per day.

2. The chronometer mechanical watch adopts high-quality mechanical parts and precise manufacturing technology, which has high reliability and durability.

3. The mechanical structure of a chronometer mechanical watch is very complex, usually including multiple gears, balances, springs and other components, which require precise processing and debugging to achieve high precision.

4. Because the manufacturing process and accuracy requirements of the chronometer mechanical watch are very high, it is also very expensive, usually tens of thousands of yuan or even hundreds of thousands of yuan.

5. Chronometer mechanical watches are usually made of exquisite design and high-quality materials, and the appearance is very beautiful, which is a high-end watch. <>