A 3½-INCH EQUINOCTIAL RING DIAL
ENGLISH, 18TH CENTURY
chapter ring with hours I-XII-I-XII divided to quarter hour, equinoctial ring with degree scale 90-0-90° and declination scale to reverse, the bridge with sliding pinhole gnomon on calendrical scales.
8in. (21cm.) high on stand
A 3½-INCH EQUINOCTIAL RING DIAL
ENGLISH, 18TH CENTURY
chapter ring with hours I-XII-I-XII divided to quarter hour, equinoctial ring with degree scale 90-0-90° and declination scale to reverse, the bridge with sliding pinhole gnomon on calendrical scales.
8in. (21cm.) high on stand
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