Inclining dial and universal equinoctial dial for 0°-60° North. A compass is set in the base-plate, on which is a hinged hour-plate and latitude arc. On the hour-plate are scales for the equinoctial and the inclining dial. There is an empty oval surrounded by leaves at the South end of the plate for an inscription or coat of arms. The gnomon is triangular and folds flat when not in use. Its vertical edge is used with the equinoctial dial and the inclined edge with the inclining dial. The latitude arc, with scales for both dials, is hinged to the West side of the base-plate. The silvered compass has an eight-point rose with the points named in English. The magnetic variation is indicated by a sliding plate that moves in a slit in the wall of the compass and can be adjusted from the outside. The dial has a maroon leather octagonal case lined with red velvet and padded red silk, with two brass hook-fasteners.

This is an unusual instrument in that it combines both inclining and universal equinoctial dials. The latitude scale for the inclining dial extends to 14° below zero, thus allowing the use of the dial in the Southern Hemisphere as far south as Peru, Madagascar and Northern Australia. The instrument resembles AST0176 and for that reason may possibly be attributed to Edmund Culpeper.

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