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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Longitude

Longitude

Longitude is the angular distance of a specific location on Earth, measured east or west from the Prime Meridian. The Prime Meridian, located at 0 degrees longitude, serves as a reference point from which longitude lines are measured. Longitude lines extend from 180 degrees west to 180 degrees east, forming a complete circle around the Earth.

Longitude plays a crucial role in determining the location between east and west and is used in conjunction with latitude to create accurate geographic coordinates. Measuring longitude is essential for navigation, timekeeping, and precise location determination on maps and Global Positioning Systems (GPS).

Longitude lines also play a significant role in certain watch features that rely on geographic data, such as world time complications or sunrise/sunset indicators.