Whitehurst & Son sundial (1812)
The dial is stoutly made and has one thick style (gnomon, a stick which casts shadow on the plate). The dial plate is not one complete circle but two semicircles separated by the thickness of the style. In this design of sundial, the angle of the style to the dial plate is exactly the same as latitude, which is 53° 1′ 49″ (the latitude of the Bridge Hill House).