N. BION in Paris - Lot 401

Lot n° 401
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Estimation :
200 - 300 EUR
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Result : 550EUR
N. BION in Paris - Lot 401
N. BION in Paris Late 17th century Portable diptych sundial with compass, on the back are the latitudes of 24 different cities (Paris, Brest, Angers, St Malo, Avignon, Rouen, Nancy, Rome, Dijon, Lion, Amiens, Nantes, Dieppe, Toulon, Liège, Pau, Marseille, Montpellier, Tours, Bordeaux, Bayonne, La Rochelle, Clermont, Orléans), all in polygonal engraved brass, mounted in a folding leather sheathed case. The dial features several hour scales engraved with Roman numerals, as well as a triangular openwork style adjustable for different latitudes. The lower part is equipped with a compass under glass, allowing correct orientation of the instrument. Cardinal indications are engraved around the rose, with fleurdelisée decoration marking the north. A scientific instrument designed to determine solar time when traveling, typical of the so-called "diptych" dials used in the 17th? XVIII? centuries. This one is signed Nicolas BION (1656-1733). Dim. 6.6 x 7.7 cm Condition: wear and tear, old patina, compass operation to be checked, fine chasing, especially on the gnomon.
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