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.
This is a ground-level horizontal dial commissioned by Plymouth City Council and made by Carole Vincent and F.White in 1988 to commemorate the 400th anniversary of the defeat of the Spanish Armada. It occupies a considerable area with circular steps rising to surround a pond from which the tall (8 metres) stainless steel gnomon projects, supported by two eccentrically placed dials, one above the other, and measuring 3200mm and 2200mm diameter respectively. Water flows over these into the pond. Granite blocks are set round the rim of the pool and show alternately our national flags and the Equation of Time.