BRIDOL is the British Sundial Society's Register of Fixed and Mass Dials, which gives detail and photographs of about 8000 fixed sundials and 3000 mass dials in the UK.
Some of these are in private gardens, but the majority are publicly available.
The dial is on the west side of the south front, at ground floor window level.
The gnomon is fitted upside down and its support has rusted away. The wall declines approx 10 deg E of S, but the gnomon appears vertical.