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

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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