"Essay On Watchmaking Volume First And Volume Second 1763 First Edition By F. Berthoud"
IN GOOD CONDITION, USED WEAR, VERY LITTLE CONSULTED, SEE PHOTOS DIMENSIONS 26 CM FROM 20 TO 38 FERDINAND BERTHOUD (1727-1807) APPRENTICESHIP WITH HIS BROTHER JEAN HENRI, MANUFACTURER OF CLOCKS, SET UP A WATCHMAKING BUSINESS IN PARIS IN 1745 AND ACQUIRED A GREAT REPUTATION FOR THE PRECISION OF HIS MARINE CHRONOMETERS, APPOINTED WATCHMAKER OF THE MARINE IN 1762 AND WATCHMAKER TO THE KING IN 1773. 
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