BEDOS de CELLES (Dom F.): La Gnomonique pratique... - Lot 20 - Osenat

Lot 20
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150 - 200 EUR
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Result : 252EUR
BEDOS de CELLES (Dom F.): La Gnomonique pratique... - Lot 20 - Osenat
BEDOS de CELLES (Dom F.): La Gnomonique pratique ou l'art de tracer les cadrans solaires. Briasson, Despilly, Hardy, 1760. In-8 contemporary marbled calf, ornate ribbed spine (binding worn, title-piece missing, some freckling). Frontispiece, one large folding map and 35 plates in-fine. First edition. One of the best treatises on gnomonics, under the patronage of Jean-Paul Grandjean de Fouchy, perpetual secretary of the Académie des Sciences, creator of the equation calculating the difference between true time and mean time, enabling the creation of sundials giving true time. A renowned organ builder, the Benedictine François de Bedos de Celles (1709 - 1779) is also the author of a monumental work on the French classical organ.
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