This 36mm pocket watch movement is only 3mm thick. At their thickest, its bridges are 1.3mm thick and only 0.3mm at their thinnest. The wheel themselves are not particularly thin, but they have very short staffs and are positioned very close to one another vertically. The balance wheel also has a very short staff. The mainspring barrel is 2.4mm thick.
Full movement
Crown wheel on the underside of the barrel bridge
Barrel bridge removed
Gear train bridges removed
All wheels have small staffs
The centre wheel almost touches the balance wheel
Mainspring barrel
Centre wheel
Third wheel
Fourth wheel
Escape wheel
Swiss lever
Balance wheel and its swan neck regulator
Focus on the jewel
Focus on the regulator
Focus on the impulse pin
It is a bi-metallic balance with cuts allowing for expansion
