1966 Column-Wheel Chronograph

Girard-Perregaux is presenting a new manufacture movement to join its 3000 family: the caliber GP03800-001, a hand-wound column-wheel chronograph. For its first appearance, this new development is housed in the elegant case of the Girard-Perregaux 1966 collection. A great classic in terms of mechanical engineering and style which is sure to appeal to watch lovers.

The fruit of five years of research, this latest member of the 3000 family launched in 1994, the caliber GP 03800, comes in the form of a classic column-wheel chronograph movement. It numbers 312 components. Its dimensions are 25.60 mm (or 11½’’’) in diameter and a remarkable 5.40 mm in thickness. It has 31 jewels. Its microvar variable inertia balance wheel beats at 28,800 Vib/h. The small second is at 9 o’clock.

The display of the chronograph includes a central direct-drive second hand and a jumping minutes counter; that is to say that the small hand jumps from one minute to the next in a fraction of a second, making it much easier to read than the usual continuous mechanism. The core of this integrated chronograph is of course the column wheel with its lateral clutch. In addition, a hammer lever allows one arm of the hammer to be wound up more or less strongly thanks to an eccentric in order to position the hammer face precisely on the minute heart cam.

Special care has been applied to the finishing: the bridges are beveled and decorated with côtes de Genève, the steels parts, also beveled, are finished with hand-drawn strokes and wheels are circular-grained. Only the eccentrics are deliberately blued, so as not to overload the movement’s design and allow the watchmaker to spot possible adjustments easily.