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 in the Museum archives with restricted access. There is a fully qualified 32 point compass rose at the base of the 90mm high by 2.5mm thick corroded iron gnomon. This is surrounded by two degree rings. The outer engraved at 5 and 10 degree intervals, the 10s being enumerated from the south 0-10-20...90-80...20-10-0 to the north. The inner ring is calibrated in single degrees. The chapter ring shows 4am to 8pm in Roman numerals, read from the inside, with IV for four. There is no XII but there is a noon gap, marked with a fleur-de-lis, to compensate for the gnomon thickness, and the half hours are marked. There are two fractional time rings outside the chapter ring showing 15 and 5 minute divisions. The hour lines extend beyond the time rings and are marked in Arabic numerals (with no 12). There is a six petal floral design set in a circle at each of the four corners of the plate. In the south of the chapter ring is the inscription ’By James Porter Anno 1774 / For Latitude 54° 58’. At the south edge of the plate is ’ For Andrew Stilley’.
Ref: Michael Harley, www.sundials-ireland.com
