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 top of a ‘standing stone’ near the churchyard entrance. At the centre is an 8-point compass rose, labelled just to the four cardinal points, and around that is engraved ‘DIAL FOR LLANDISSILIOGOGO NOT TO BE STOLEN’. The hours are IIII - XII - IIII - VIII, read from inside, with a noon gap and divided to 30, 15 and 7.5 minutes. The dial appears to have been split along the meridian line and then rejoined, possibly with a plate underneath. The date of 1790 is believed to be authentic.
