All about movements: Calibre FBN916.01 by Laurent Ferrier

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The hand-wound calibre “Tourbillon double balance spring” is an exclusive Laurent Ferrier movement which features a concept of two inversed balance springs. This mechanism allows the movement to average out the earth gravity by keeping the balance centre of gravity on its axis.

This timeless style movement is inspired by great chronometers of the 19th century. Some elements recall “Chronometer Competition Watches” which showed the know-how of the greatest watchmakers craftsmen.

We will find a winding system with a very soft design, without the modern check-spring for the pull-out piece.It also has been chose to use a long “blade” type click ratchet, polished and with a curved shape.

It is a very accurate movement but also sturdy, thought in the least details to go through time and generations and thus to testify of a know-how dating back 200 years.

It features also a lot of handcraft which can only be done by the expert hand of skilled and passionate watchmaker craftsmen.

Numerous engaging angles and different curved finishing are here to testify.

TOURBILLON DOUBLE BALANCE SPRING
Diameter: 14’’ (Ø 31.60 mm)
Thickness: 5.57 mm
Frequency: 3Hz (21600 vibrations/hour)
Power reserve: 80 hours (Theoretical: 86.7 hours)
Manual winding
182 mechanical parts / 23 jewels
Hours and minutes in the centre
Small seconds at 6 o’clock on tourbillon frame pivot
Tourbillon rotating cage visible through sapphire case back

TOURBILLON FEATURES
Tourbillon, opposite double balance spring
Double balance springs “Geneva”
“Swiss” pallet escapement
Balance at variable geometry, with screw
Tourbillon frame carrier in periphery

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