Dimensions:
Octagonal plate, 520mm across flats, 28mm thick
Gnomon, water-jet cut brass and slate 12mm thick, 400mm long.
Cursor: water-jet cut and stove enamelled etching, on stainless steel pin.
Materials: Plate: Welsh blue-black slate, brass, stainless steel
Location : In private ownership, Lat. approx. 51⁰N