Camera and hood for photographing 'phone-call meters, c 1965.

Electricity meter, c 1930.

Edison electrolyte meter, c 1881.

Camera and hood for photographing 'phone-call meters, c 1965.

Jupiter Ace microcomputer, 1983.

First (single or polyphase) AC Commutator, 1887.

Morphy Richards electric toaster, c 1980.

Castration clamps, English, c 1700.

C S Rolls' record-breaking 80 hp Mors motor car, 1903.

C S Rolls with of his record-breaking 80 hp Mors Racer, 1903.

C S Rolls behind the wheel of his 100 hp Mors Racer, 1904.

80 hp Mors Racer on the C S Rolls & Co stand at a trade fair, London, 1903.