Fondation de la Haute Horlogerie

Glossary

Barrel arbor

Supports the barrel and its spring. It comprises a cylinder, known as the core, and a hook to which the inner end of the mainspring is attached. The upper pivot is cut into a square for the ratchet-wheel. The arbor moves in holes, one in the plate and the other in the barrel bridge.

• french: Arbre de barillet
• japanese: 香箱真／コウバコシン
• chinese: 发条匣轴