The 'Tachypoly Plasiasme' ready reckoner, 1880-1884

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