01 / Hairspring Geometry

Breguet Overcoil and Hairspring Geometry

How the Breguet overcoil shapes the hairspring so that it expands and contracts evenly.

02 / Materials

Silicon Escapements and Hairsprings

Why silicon components are lighter, non-magnetic and less dependent on lubrication.

03 / Finishing

Hand Finishing and Anglage

How hand-bevelled edges, stripes and polished surfaces are made, and why they take so long.