The 'Tachylemme' ready reckoner, c 1876.

The 'Tachylemme' ready reckoner, c 1876.
"Tachylemme" of C.L.Chambon, c.1876. This instrument shows the daily interest on sums of money at various rates.
 
Currently on display in:
Mathematics
Year made :
c.1876
Inventory number :
1936-195