Portable horizontal dial for latitude 49° North. This dial is formed out of a circular brass box lid. On the outside, there is foliate decoration. On the inside is an hour-circle numbered clockwise with an extra '3' punched near the centre. The compass is marked with a North-South line; North being indicated by a cross. The needle is blued, has a bar for North and is surmounted by a brass pyramidal pivot. There is a glass plate over all. The gnomon (which is presently detached) is hinged, shaped, folds flat when not in use and is secured by a pivoted catch set between the 4 pm and 5 pm hour-lines.

This is an unremarkable, inexpensive dial from the early years of the 20th century. There is a slight oddity in the presence of an extra '3' punched near the centre of the dial: this was the mark used by Jacob Karner when signing his dials and it is possible that some connection was intended.

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