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
Sidereal day

Sidereal day

Sidereal day is the time it takes for the Earth to complete one rotation with respect to the stars (using a fixed point) instead of the Sun, which is approximately 23 hours, 56 minutes, and 4.0916 seconds.

Some specialized clocks or timepieces have been designed to display sidereal time, which is based on the Earth's rotation relative to distant celestial bodies. These clocks often feature an additional sub-dial or display screen indicating the current sidereal time, allowing professionals in fields such as astronomy and navigation to track astronomical events with precision.