Properties of movement of clock hands. Hour terminology

Thus, the aging of your bracelet will be accelerated due to various external aggressions. Extreme wearing conditions such as sporting events, immersion in water, significantly reduces service life. Without this rule, we recommend, for aesthetic and functional reasons, and also to anticipate possible breaks in wear, if necessary, to change the leather strap every year.

Is a leather or rubber strap covered by warranty?

We also recommend that you purchase a replacement bracelet from our various authorized retailers.

What is the life of a rubber strap

However, if you take care of your bracelet, it can stay in good condition for several years. We encourage it to change from the slightest cut or crack in the material. Our environment is increasingly subject to disturbances from various magnetic sources. We therefore recommend that you avoid, as far as possible, wearing or removing your watch near electronic devices that may create magnetic fields that are harmful to its proper functioning.

The case of quartz watches: A quartz watch can be disrupted when it enters a strong magnetic field, however it resumes normal operation when it comes out of it. This disturbance therefore lasts when your watch is in the center of a magnetic field.

Mechanical watch case: mechanical watches also sensitive to strong magnetic fields. The induced disturbance can in some cases magnetize steel parts in motion and, in particular, the balance spring. In some cases, however, rare parts can become locked together by magnetization and cause the watch to rapidly advance or even stop.

We only buy diamonds from suppliers who also respect these systems. The diamonds selected here were purchased from legal sources, not involved in the financing of armed conflicts and in accordance with United Nations resolutions.

Homing perpetual motion admires its chronometric characteristics. Enclosed in its waterproof case, perpetual motion is invisible to the wearer. When you have the opportunity to see it, you admire this complex mechanism that its chronometric performance has become famous throughout the world, for what it is: the work of an artist, a magnificent miniature universe, many figures, volumes, colors and surfaces, some polished, others satin, others are still beaded, always with infinite care and in absolute respect to the traditions of watchmaking.

Precision, reliability, reliability

They provide very high performance and strict compliance with requirements in terms of precision, reliability, shock resistance, automatic winding and ease of maintenance. This allows a perfectly balanced and concentric development of the spring balance and contributes to greater chronometric accuracy in all positions.

The rigidity of the bridge significantly improves impact resistance. It ensures continuous winding of the spring and thus provides the watch with a constant and stable source of energy. For example, pinwheels and gears are beaded, bridges are satin-finished, beaded or collimated, black polished screw heads and their angled edges and slot.

These unprecedented tests of chronometric accuracy after installation, sealing, automatic winding and autonomy push the boundaries of performance. In mechanical watches, the oscillator is the keeper of time. By composing the spiral and balance, this regulating organ determines the accuracy of the watch by the regularity of its vibrations.

Made from a paramagnetic alloy, it is insensitive to magnetic fields and up to 10 times more shock resistant than traditional coils. Unique in the history of watchmaking Blue colour hairs have always been a sign of prestige, reserved for the most accurate watches.

• Homologue as a result of impact tests and many laboratory tests.
• The tiny component that makes all the difference.

Historically, watches may be designed to be their manufacturer's chronometer in order to demonstrate their high precision, which obviously poses a risk of fraud. Under the old rules, movements that demonstrated their superiority during testing received a certificate with the quote "particularly satisfactory results." They were three times more accurate than what they were asked to mention. This designation will be added to the description on dials until then, forming the famous "certified chronometer officially certified".

Honors chronometer certificates are disappearing. Clocks measure the flow of time throughout the day, dividing it into units that can be used as a reference for public life. The first clocks used astronomical phenomena such as the rotation of the Earth; later mechanical pendulum devices were invented, and then quartz and atomic clocks.

A clock is a tool that allows you to measure the flow of time throughout the day. The first instruments to measure travel time during the day known from ancient egypt, was a sundial that used the rotation of the Earth, measured by the shadow projected by objects. Sundial consist of an auction - a gnomon - and a dial on which the hours are indicated. The gnomon should be parallel to the Earth's rotation axis and point towards North Pole. Its shadow moves across the dial throughout the day, indicating the hour.

In fact, the length of the shadow depends on the height of the sun: it is minimum at midday when the Sun is at its peak, while it tends to stretch out during the day as the Sun approaches sunset. Portable slides were also implemented in the Middle Ages; these instruments consisted of two dials joined together like the pages of a book, with a thread of flax or hemp running between the dials on the gnomon. To align the portable slides, it was necessary to orient them so that the two disks indicated the same time, which coincided with the correct solar time.

Another ancient time measuring device is the hourglass. In his very ancient form it consists of two water containers connected by a hole; on inner surface The second container was engraved with signs indicating the passage of time.

Another version hourglass, which is more familiar to us, consists of two glass lamps containing sand instead of water. This is actually a later version than the water clock and is especially important for navigation because for a long time it was the only instrument for measuring time at sea, even at night. Its use is known to have spread since the 14th century, and during his voyage around the world, Magellan placed eighteen hourglasses on the ships of his fleet.

Mechanical clocks appeared at the end of the 13th century. These devices were moved by a weight tied to a rope wrapped around a cylindrical stick or drum. The weight, slowly and regularly reduced, turned the drum into itself and drove a series of gears connected to the arm. When the rope was completely unrolled, it was necessary to rewind it onto the drum. The expression used here is "give a rope", which will also be used for subsequent wristwatches. A special mechanism called escape meant that the energy produced by weight did not escape all together, but escaped a little at a time.

The accuracy of time calculation has increased significantly with the help of pendulum clocks. Galileo studied the so-called pendulum isocronism: for a device of a given length, the period of oscillation is always the same, regardless of the mass of the pendulum and the amplitude of the oscillations, provided that it is always small enough. Galileo left several sketches of possible clocks based on this principle, but it was then that Huygens created it.

Operation of pendulum and swing clocks. The heart of a pendulum clock consists of a rod mounted on a support with a mass placed at the other end. The alternative movement of the pendulum must be converted into regular rotation of gears, which in turn turn the arms. This task is performed by shoots consisting of a wheel with special teeth and connected to a mechanism that moves with the pendulum.

Twelve cutouts are drawn on the hour dial over several hours, as it is divided into half a day, another sixty minutes and, in some cases, seconds. Long marks usually indicate minutes, and short marks usually indicate hours. Pendulum clocks are not much used today because there are definitely more accurate instruments available. However, they are still valued as decorative items, also because they are often built into very valuable wooden furniture.

The principle on which they are based is the rocker principle, similar to the pendulum principle. It's a wheel attached to a helix so you can only make half a turn in one direction before turning in the other. The spring, which gradually exhausts its energy, transmits through a gear a smooth thrust to the rocker, maintaining a constant movement, which is transmitted to the hands through a flight mechanism similar to that of a pendulum.

The spring must be periodically recharged, which is done using a small rotating wheel located on the thin side of the watch. Initially considered a feminine accessory, male audiences were only convinced of its benefits during World War I, when armies provided officers with the wristwatches needed to synchronize artillery and infantry during attacks. This encouraged the production of wrist instruments that were precise and at the same time economical because they were made on a commercial scale.

These watches came onto the market after the war and became very common. Since the 1950s, instead of a spring, electricity has been used, equipped with small batteries to move the rocker. In the 1960s, quartz watches appeared on the market, in which the oscillatory movement is obtained by a quartz crystal, which constantly vibrates when exposed to electric current. Crystals used for watches typically have a vibration frequency of 768 vibrations per second. The corresponding device, called the drift factor, is able to count the vibrations and gives a pulse whenever it arrives.