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illuminated moving scale indicator with transformer and operating switch

Model of the N.S. "Savannah" (1959)

1958-1965

Lawrence Scott ampmeter and voltmeter

Electrostatic voltmeter, disassembled to show parts

Crompton dead beat voltmeter no.12861 180-270v.

Whole rigged model of H.M.S. 'Himalaya'

1850-1854

Mercury ion engine, one of five

1978
wire wound potentiometer mounted on boards with later additions.

Wire wound potentiometer

1910-1940
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