Louis Erard Unveils the Limited-Edition Gravée Main

Since 2021, Louis Erard has been redefining the boundaries of Métiers d’Art, from Grand Feu enamel and guilloché to wood marquetry, and soon, gold wire inlay. Now, Gravée Main opens a new chapter, paying tribute to one of the oldest crafts in watchmaking hand engraving.
Gravée Main represents a new milestone in Louis Erard’s Métiers d’Art series. This limited edition of 99 unique timepieces places hand engraving at center stage, with every metal element entirely engraved and finished by hand, a meticulous process that requires more than 50 hours of work.

Glossary

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Glossary
Hertz (Hz)

Hertz (Hz)

Is a unit of measurement for frequency, representing the number of cycles or oscillations per second. This unit is used to describe the frequency of a watch's movement or the vibrations of a balance wheel.

Traditional mechanical watches typically operate at frequencies ranging from 2.5 to 4 Hz, which means the balance wheel completes 2.5 to 4 oscillations per second. This frequency is sometimes referred to as "beats per hour" or "vibrations per hour," indicating the number of oscillations the watch's movement performs in one hour. On the other hand, modern high-frequency watches, such as those equipped with quartz movements or certain mechanical movements, can operate at much higher frequencies. For example, quartz watches typically operate at a frequency of 32,768 Hz, making them more accurate in timekeeping.