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.
Mounted very high on the former church tower, below the clock.
The dial has a pierced plate gnomon.
Ref Guernsey Sundials, David & Dorothy Le Conte, pp27-28, La Société Guernesiaise, Guernsey 2004.
