Butterfield dial for latitudes 40°-49° North. Standard three-scale dial (see related terms) except for the following details:-

The first scale is octagonal and marked for 49°, the second scale is oval and numbered 4-12, 1-8, the third is octagonal and numbered 4-12, 1-8, and the spaces between are filled by hatching. There is leaf decoration in the centre. The compass, which is incorrectly oriented, has a four-point rose with the cardinal points named in French and the quadrantal points indicated by single lines. The needle is blued, with a cross indicating North and is surmounted by a brass pyramidal pivot. The main part of the gnomon is missing; only the bird index remains.

The reverse side of the dial-plate is filled with a table of latitudes for towns and cities in Europe, such as Dublin (53), Paris (49) and Turin (44). The dial has an unusually simple decoration on the front. The substitution of a 49° scale for the more normal 50° scale suggests that the dial was intended for use mainly in Paris. It is signed 'Macquart AParis' on its obverse side.

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