The mould from which the figure is cast is sufficiently adaptable to allow the sundial to be correctly oriented at most sites in England. The sundial can be described as a mean time equinoctial dial, with the dial plate being part of a polar-aligned cylinder and allowing times from approximately 9 am to 3 pm to be indicated. The delineation is made to allow for the Equation of Time and the local longitude. Two photo-engraved brass dial plates are provided, one calibrated in Greenwich Mean Time and the other in British Summer Time. The days of each month are indicated on the 12 o'clock line.
Separate lines show the time of local noon and the equinoxes.