Butterfield dial for latitudes 35°-60° North. Standard three-scale dial (see related terms) except for the following details:-

The first hour scale is octagonal, the second oval and the third octagonal again. The spaces between the hour scales are filled with black enamel and there is a central circular acanthus motif. The compass is offset 8° West of North to allow for magnetic variation and its cardinal points are marked by Latin initials. The latitude scale on the gnomon is adjustable for latitudes 35°-60°, and the base of the compass is engraved with an acanthus flower. The remainder of the reverse side of the dial-plate is filled with a table of latitudes in two columns, such as 'Paris 49', 'Londres 51' and 'Madrid 41'. It is signed 'CHAPOTOT APARIS'.
The dial has a black fishskin octagonal case with red velvet lining and a push-button silver clasp. Comparatively unusual in its use of black enamel between the hour scales as well as on the hour numerals, this dial is simpler in design than others by Chapotot. Like AST0489, it can be used across a wider range of latitudes than normal, though again this is not reflected in the choice of towns on the reverse.

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