Baby Calculator', c.1960.

'Baby Calculator', 1958-1962.
`Baby Calculator' stylus adding device by Glenview, Illinois, USA, c. 1960. Like the Exactus, this is one of a number of simple stylus machines introduced in the mid 20th century. It performs multiplication and division by repeated addition and subtraction respectively.
 
Currently on display in:
Mathematics
Year made :
c.1960
Inventory number :
1992-565