Horizontal sundial in brass, Butterfield type, signed N. BIO - Lot 150

Lot 150
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Estimation :
600 - 900 EUR
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Result : 600EUR
Horizontal sundial in brass, Butterfield type, signed N. BIO - Lot 150
Horizontal sundial in brass, Butterfield type, signed N. BION IN PARIS. Rectangular turntable with cut sides featuring a compass with four main directions, engraved with four hour scales for 40,45, 50 and 55 degrees. Folding style-axis with latitude adjustment by the beak of a bird. On the back, engraved names of European cities with their latitude. 7 x 6 cm. In a chagrin case lined with velvet (deformations) Nicolas BION (1655-1733), French engineer and cosmographer, builder of mathematical instruments.
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