An 18th-Century brass universal equinoctial ring dial,

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An 18th-Century brass universal equinoctial ring dial,
signed Made by Tho. Wright instrumt maker to HIS MAJESTY, on the equinoctial ring, also divided I-XII (x), the meridian ring with quadrant scales for north and south, the other side with declination scale, with suspension mounting and ring -- 4in. (12cm.) dia.

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