The first mechanical movement manufactured in Montblanc's own workshops in Le Locle took its inspiration from Nicolas Rieussec's 1821 invention of the world’s first chronograph. The hand-wound Montblanc calibre MB R100 is the driving force in the Montblanc Nicolas Rieussec Monopusher Chronograph, featuring a classic column-wheel mechanism and a vertical disc clutch, which ensures virtually friction-free power transmission to the wheels of the chronograph.
