SR WATCHES | OCTAGON CHRONOGRAPH

CHRONOGRAPH

The word “chronograph” comes from the Greek “chronos”, meaning time, and the verb “graphéin”, to write. Originally invented by Nicolas Mathieu Rieussec, on 15 October 1821 the French Academy of Sciences registered the device, and on 9 March 1822 it was patented for a duration of five years. The button on this instrument activated a “nib pen” (the chronograph hand) which deposited a dot of ink onto a rotating white dial at the start and end of the measurement. Then as now, the time measurement was started and stopped using buttons invented by Adolphe Nicole in 1844, when he patented the heart-shaped cam, which to this day returns the chronograph hand to zero. The movement features an automatic base which operates at a rate of 28,800 vibrations/hour, with a variable inertia balance wheel and two barrels, arranged in sequence, which guarantee a 50-hour power reserve, falling to 42 when the measurement is activated.

OCTAGON CHRONOGRAPH
DIAMOND LUX LIMITED EDITION

THE SR WATCH CASE