CLOCKS & WATCHES -- BERTHOUD, F. Essai sur l'horlogerie; dans lequel on traite de cet art relativement a l'usage civil, a l'astronomie et a la navigation. Par., J.C. Jombert, Musier & C.J. Pancoucke, 1763. 2 vols. (4), lv, (11); (4), viii, 452 pp. W. 38 fold. engr. plates. 4°. Cont. mottled cf. w. raised bands, dec. gilt back & red edges. (Binds. rather dam./chafed, plates of 1st vol. a bit stained, slightly browned/foxed in places).The Swiss chronometer-maker Berthoud, who trained with his brother, settled in Paris in 1745. His chronometers were among the best and most accurate of his time. He was a member of the Institute and a fellow of the Royal Society of London, clockmaker to the Navy and clockmaker to the king. Essai sur l'horlogerie is his most important publication on time-keeping devices. - Houzeau/Lancaster 10199; Poggendorf 1, 168; Honeyman 302.
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