The column wheel, a pillar of traditional chronographs

Designed in the early 1970’s as a low-cost chronograph, the Valjoux 7750 has been adapted all fashionable ways. It was even converted into a high-range mechanism thanks to the transplant of a traditionnal column-wheel. Contributor R. Jay Nudds examins le function of a column-wheel and its cheaper counterpart to outline the practical and emotional reasons that could lead the collector to choose one over the other:

The column wheel, a pillar of traditional chronographs – Dissecting the pros and cons of retrofitting a column wheel to a 7750 Chronograph