Lot 73

■ƒ HORIZONTAL
SOLAR DIALER IN BRASS BY MICHAEL BUTTERFIELD, TO 1700
signed Butterfield In Paris scales of three hours
IIII-XII-VIII each divided into 30 minutes with
three other scales for each divided into
5 minutes, for 47°20 ', 44°30', 48°51 ', large
gnomon of folding bird for latitudes 40°-60 °,
the interior engraved with latitudes for 30 cities. 16.3 x 16.3cm.
US$2,300-3,300
£1,800-2,600
HORIZONTAL BRASS DIAL, BY MICHAEL
BUTTERFIELD, CIRCA 1700

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