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Details
A rare 18th-Century English brass Universal Equinoctial ring dial,
signed on the equinoctial ring C. Lincoln, London -- 23cm. (9in.) diameter
See Colour Illustrations and Detail
The outer, meridian, ring has a brass wire running around the circumference, with an attachment for the sliding suspension unit, now missing. The ring bears engraved graduations for four quadrants of 0-90° on one side, and a declination scale of 0-90° on the other. The equinoctial ring is arranged to pivot within the meridian ring and is graduated in hours I-XII twice, and in minutes, with both sets of numerals repeated on the inner edge of the ring. The bridge has engraved scroll-decorated ends and shows the months with two-day subdivisions on one side. The other side has two scales, one for the houses of the Zodiac represented by their sigils, with two-day subdivisions, and the other for northern or southern declination, with a scale 20-10-Æ-10-20 with engraved fleur-de-lys in between each point and ½° subdivisions. Along the centre runs the sliding pin-hole sight.
signed on the equinoctial ring C. Lincoln, London -- 23cm. (9in.) diameter
See Colour Illustrations and Detail
The outer, meridian, ring has a brass wire running around the circumference, with an attachment for the sliding suspension unit, now missing. The ring bears engraved graduations for four quadrants of 0-90° on one side, and a declination scale of 0-90° on the other. The equinoctial ring is arranged to pivot within the meridian ring and is graduated in hours I-XII twice, and in minutes, with both sets of numerals repeated on the inner edge of the ring. The bridge has engraved scroll-decorated ends and shows the months with two-day subdivisions on one side. The other side has two scales, one for the houses of the Zodiac represented by their sigils, with two-day subdivisions, and the other for northern or southern declination, with a scale 20-10-Æ-10-20 with engraved fleur-de-lys in between each point and ½° subdivisions. Along the centre runs the sliding pin-hole sight.
Special notice
No VAT will be charged on the hammer price, but VAT at 17.5% will be added to the buyer's premium which is invoiced on a VAT inclusive basis