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A brass universal equinoctial ring dial, English, early 18th century, image 1
A brass universal equinoctial ring dial, English, early 18th century, image 2
Lot 15

A brass universal equinoctial ring dial, English, early 18th century,

31 October 2017, 13:00 GMT
London, Knightsbridge

Sold for £625 inc. premium

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A brass universal equinoctial ring dial, English, early 18th century,

the meridian ring engraved with latitude scale 90-0-90 degrees, reverse with scale for determining solar altitude and zenith distance, equinoctial ring with obverse engraved with hour scale in Roman numerals, central bridge with pin-hole sliding over calendar and zodiac scales, with suspension ring, 6in (15.2cm) diameter

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