Inventory no. 86833 - Former Display Label
English EQUINOCTIAL RING-DIAL
between 1714 and 1748
Brass. Signed, 'Made by Tho Wright Instrumt. maker to his MAJESTY'; not dated.
There are latitude scales for both Northern and Southern latitudes.
The reverse side of the vertical ring is calibrated in degrees as a quadrant.
[79]
Clay Collection