Tourbillon (watchmaking)

In horology , a tourbillon , also called “rotating cage,” is a complication watch, added to the mechanism of exhaust , designed to improve the accuracy of mechanical watches by offsetting the disruption of the isochronism of the balance due to gravity earth. This mechanism was invented by the French watchmaker Abraham-Louis Breguet in 1801.

This device is very complex to realize, which is why it equips very few mechanical watches.


Animation of a carousel, variant of the tourbillon
Animation showing the different positions of the vortex and the delaying or accelerating effect of gravity

Abraham-Louis Breguet (1747-1823), a watchmaker for French royalty, worked alongside (more…)

Movement (watchmaking)

A movement , in watchmaking , is the set of parts making it possible to operate a watch . Each type of movement finds its nomenclature under the name of ” caliber” , for example the ” Valjoux 7750 “.

The dimensions of a movement are measured in millimeters, but the watchmakers also use ” the Line “, former measurement equivalent to 2.255 millimeters and designated by the symbol “”.

On average, a simple mechanical movement has 130 pieces [ ref.  Desired] .

Hand-wound mechanical movement

A movement consists of the mechanical elements giving the unit of time. The exhaust regulates the energy stored in (more…)