A £250,000 restoration of the Nelson Monument on Calton Hill is set to start next week. The work will also see the famous time-ball mechanism, formerly used by mariners in the Firth of Forth for navigation, returned to working order.
The renovation project, starting Monday 9th March and due to be completed by August, is part of the on-going Twelve Monuments Restoration Project, a partnership between the City of Edinburgh Council, Edinburgh World Heritage, charitable trusts and business donations.
"By taking this action now to restore the Nelson Monument, we are preserving an important part of Edinburgh's maritime heritage for future generations," said City Culture Leader Deidre Brocks.
"This major project will return the monument to its former glory and when complete, residents of Edinburgh and visitors alike will be able to look to the monument at one o' clock once again to see the impressive time-ball mechanism in action."
Ball and gear mechanism
The biggest challenge will be the restoration of the time-ball itself, which weighs an estimated 762kgs, about the same as a small car. The ball will be removed with a crane and its internal wooden structure carefully restored. The 150-year old gearing mechanism will also be repaired. Once complete, the time-ball will again operate at one o'clock on a daily basis.
Work will also include stonework repairs and re-pointing with lime mortar. Most important will be the stonework around an internal corroding iron band, which has already caused some stone to flake off at parapet level. The top parapet will be partially taken down and rebuilt in the course of the works.
David McDonald, Project Manager with Edinburgh World Heritage said the restoration is being paid for by the Heritage Lottery Fund and "a large number of very generous donors."
"The Nelson Monument is one of the most prominent buildings in the city, and the one' o clock time-ball is a great Edinburgh institution. It is fantastic to be able to keep these city traditions going, which all go to make Edinburgh such a unique place to live and visit."