Fourteen specimens of coiled steel bands and cords mounted on a board. Fourteen specimens of coiled steel bands and cords mounted on a board 1881
Telescoped sample of three-core, polymer-insulated, screened, armoured and polymer-sheathed cable rated at 11kV, as used in the Science Museum, Victoria and Albert Museum, and Natural History Museum in 1985-6 when a high voltage (6.6kV) distribution system was installed to replace the previous 415/240 supplies. Telescoped sample of three-core
