Selection of four ready reckoners

Made:: 1972-1976 in England

Selection of four ready reckoners, for assisting the conversion from L.s.d. to decimal currency and from imperial to metric measures.

One of four ready reckoners, for assisting the conversion from L.s.d. to decimal currency, sponsored by the Daily Telegraph newspaper. A circular plastic dial with moveable cursor.

One of four ready reckoners

1972-1976

Ready reckoner (weights and measures)

1972-1976

One of four ready reckoners

1972-1976

Ready reckoner (currency)

1972-1976

Details

Category:: Mathematics

Object Number:: 1976-430

Materials:: cardboard, paper (fibre product) and plastic (unidentified)

type:: ready reckoner

credit:: Science Museum (Great Britain)

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