In 1902 a new clockwork mechanism was installed to turn the lenses;Audio transcription by P. Halil of the station's Order Book (1858-1992). by this time the optic had been modified to float in an annular mercury bath, which enabled it to turn much more freely. Two years later incandescent oil burners replaced the old multi-wick burners; they were upgraded with the installation of 'Hood' incandescent burners in 1922. These remained in service until 1945, when they were replaced with electric lamps (powered by Stuart Turner diesel engined generating sets). A separate small Petter-engined generator provided electricity for the keepers' domestic use from 1955; it replaced a petrol-driven machine which had been installed during the war to power a radiotelephone (enabling direct verbal communication with ships, the shore and other nearby lighthouses). The electric installation was upgraded (with the provision of Lister diesel generator sets) in 1973.
