Universal equinoctial dial for latitudes 0°-90° North. Hinged to the North side of the dial-plate is a silvered hour-circle whose inner rim is enamelled in black and numbered [VI]-XII, I-[VI]. A brass strut attached along the VI-VI line supports a rectangular brass rod gnomon. The latitude arc is silvered and hinged to the East side of the dial-plate, engraved on the outside only, and divided from the tip [0°]-[90°]. The compass is silvered and set into the base-plate. Its degree scale is divided [0°]-[90°]-[0°]-[90°]-[0°], and it features a highly decorated four-point rose with the cardinal and quadrantal points named by English initials. It has a thick needle and an arm to lift the needle and lock it in position against the glass. Two brass bubble levels are also set into the compass and a glass plate covers all.

The dial has a purple leather heart-shaped case with purple velvet lining (padded in lid) and three brass hook-fasteners. 'PRITCHARD 162.FLEET.ST. LONDON' is stamped in gold on the lid. This is very similar in style to AST0165 except that it can be used only in northern latitudes.

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