Lot 71

■ƒ PORTATIVE SOLAR DIAL OF TYPE
"BUTTERFIELD" IN BRASS
BY NICHOLAS BION, TO 1700
Signed N Bion In Paris with scales of four
hours for 55°, 50°, 45°, 40°, the outer part
divided 8-12-4, gnomon folding with
bird-shaped pointer, compass rose 8 points, the reverse
with latitudes for 24 cities, 7.3 x 6.5cm.
US$1,200-1,700
£880-1,300
PORTABLE BUTTERFIELD SUN DIAL IN BRASS,
BY NICHOLAS BION, CIRCA 1700

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