Model of the N.S. "Savannah" (1959)
1958-1965
Lawrence Scott ampmeter and voltmeter
Crompton dead beat voltmeter no.12861 180-270v.
Mercury ion engine, one of five
1978
Electrostatic voltmeter, disassembled to show parts
Whole rigged model of H.M.S. 'Himalaya'
1850-1854
Telescoped sample of three-core
Wire wound potentiometer
1910-1940