The 'Tachypoly Plasiasme' ready reckoner, 1880-1884
'Tachypoly Plasiasme' ready reckoner, 1880-1884. Invented by C L Chambon in 1880, the 'Tachypoly plasiasme' ready reckoner showed multiplication tables up to 100 times 100.
- Currently on display in:
- Mathematics
- Year made :
- 1880-1884
- Inventory number :
- 1884-4
