Rolex 3035

1977-1988 free Breguet hairspring balance with regulating screws Kif shock protections for balance and escapement wheel strange: train and hand gear separately driven by the barrel The train is driven by the pinion under the off-center 2nd wheel A (Fig.5) up to the escape wheel B (3rd and 4th wheel removed), the hand gear by the center pinion C. This design allows low profile and gives space for a big balance, but it requires high precision and shake-free gears, because so many wheels are involved in the coupling between second- and minute hand.