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About us
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Watch Makers exhibition
Watchmaking professions
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Glossary
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Library
About the FHH Academy
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They trust us
International dedicated team
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About the FHH Forum
Masterclass
Thematic articles
The Foundation
About us
Partner brands
Cultural council
Events
Calendar
Editions
Watches and Culture
Watch Makers exhibition
Watchmaking professions
Watchmaking scene
Brands
Watches and Novelties
Watchmaking knowledge
History
Encyclopedia
Case studies
Glossary
Cultural activities
Exhibitions
Museums
FHH x GPHG
Library
FHH Academy
About the FHH Academy
Our offers
Diagnostic
Courses
Certifications
Open sessions
They trust us
International dedicated team
Digital learning
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Leaf - An Essential Component in Mechanics
FHH | Leaf - An Essential Component in Mechanics
Leaf
葉／ハ
叶片
Leaf
Aile
Glossary
Thematic
Technic, Transmission
The tooth on a pinion.
