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 motto reads: "Soli deo gloria". The dial shows 6am to 5pm in half hours. It is believed to be stone or possibly painted wood with a metal gnomon. Further information requested.