 The tower is high and stands an average of above sea level.It was built of local sandstone topped by a lantern that was originally destined for Gibraltar  It was provided with a large (first-order) catadioptric optic, supplied by Chance Brothers & Co., with a single lamp, supplied by Messrs. W. Wilkins & Co. of Long Acre.The optic included a 'dioptric mirror' (i.e.