A BRASS EQUINOCTIAL RING DIAL
ENGLISH, LATE 18TH CENTURY
Engraved chapter ring with hours I-XII-I-XII divided to 5 minutes, equinoctial ring with degree scale 90-0-80° and declination scale to reverse, the bridge with sliding pinhole gnomon on calendrical and zodiac scales
8 in. (20 cm.) diameter
A BRASS EQUINOCTIAL RING DIAL
ENGLISH, LATE 18TH CENTURY
Engraved chapter ring with hours I-XII-I-XII divided to 5 minutes, equinoctial ring with degree scale 90-0-80° and declination scale to reverse, the bridge with sliding pinhole gnomon on calendrical and zodiac scales
8 in. (20 cm.) diameter
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