Scientific, nautical, surveying and electrical apparatus and instruments, photographic, cinematographic, optical, weighing, measuring, signalling, checking (supervision), life-saving and teaching apparatus and instruments, but not including any of the aforesaid goods for use in broadcasting or in the production or presentation of radio and television programmes; calculating machines and data processing equip- ment; electronic industrial relays, electric connections, electron tubes, contactors, electric converters, circuit breakers; switch gear; signalling units in this class; radio transmitters of a capacity greater than 10kw and aerials therefor; control gear and units in this class; batteries; battery chargers; transformers; and parts and accessories for all the aforesaid goods included in this class; safety equipment in this class including plugs and sockets.

Motors (except for land vehicles) including printed circuit motors; control mechanisms for motors, engines and machines; condensers; compressed air machines; springs being parts of machines; bearings; turbo chargers; and parts and accessories in this class for all the aforesaid goods including starters other than for land vehicles and converters for steel works.

Installations for lighting, heating, steam generating, cooking, refrigerating, drying ventilating and water supply; furnaces and parts and accessories therefor in this class and heating installations in this class being power generation stations