Forged universal equinoctial ring dial for all latitudes. This dial consists of two concentric rings and a bridge, which folds flat when not in use, with a suspension ring and a bracket that is soldered to the ring, which slides in the grooved rim of the meridian ring. The meridian ring has a latitude scale on its obverse and reverse sides. On the obverse side of the equinoctial ring, it is inscribed 'NUNQUAM ERRAT COELESTI LUMINE DUCTUS' (He who is guided by the heavenly light never strays), and there is also an engraving of a marine animal. Its reverse side and inner rim has an hour scale. The bridge carries a very elaborate design comprising date and zodiac scales. It is also inscribed 'ME LUMEN VOS UMBRA REGIT' (The light rules me, the shadow you). The equinoxes are marked at 20 March and 20 September on one side, but on the other side the date scale does not fit the zodiac scale.

This is almost certainly a 20th century forgery, though purporting to be an 18th century French dial. The quality of engraving is poor and the dates for the equinoxes are marked incorrectly on one side of the bridge. The use of 'anno domini' is not common on authentic pieces. Stamps have been used for marking the numbers rather than engraving. The mottoes are ones regularly found in lists of dialling mottoes.

For more information regarding this dial please refer to the OUP & NMM catalogue, 'Sundials at Greenwich'.