One of four ready reckoners
1972-1976
Selection of four ready reckoners, for assisting the conversion from L.s.d. to decimal currency and from imperial to metric measures.
Details
- Category:
- Mathematics
- Object Number:
- 1976-430
- Materials:
- cardboard, paper (fibre product) and plastic (unidentified)
- type:
- ready reckoner
- credit:
- Science Museum (Great Britain)
