Portable horizontal dial for latitude 48° North. The dial-plate is oval shaped and on its obverse side is an hour scale with a central circular floral design. The hinged gnomon is shaped and engraved with acanthus leaves and folds flat when not in use. The compass has eight points marked, with a fleur-de-lys for North and smaller ones for the quadrantal points. It is offset 3° East of North to allow for magnetic variation. The needle is shaped as an arrow, blued for North and surmounted by a brass pyramidal pivot. There is a raised glass plate over all. The dial-plate is supported by the compass bowl, which has a rose engraved on it, and one turned silver leg. The reverse is signed 'C Bonneuie AParis'.
Bonnevie is an otherwise unknown Parisian maker. His work closely resembles - and is certainly as competent as - that of other French makers of the late 17th century.

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