Baby Calculator', c.1960.
- Made:
- circa 1960 in United States and Illinois
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`Baby Calculator' stylus adding device by Glenview, Illinois, USA, c. 1960. With suede pouch and steel selector
`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.
Details
- Category:
- Mathematics
- Object Number:
- 1992-565
- Materials:
- steel (metal), aluminium (metal), paper (fibre product), plastic (unidentified), metal (unknown), cotton (fibre) and suede leather
- Measurements:
-
overall (handle extended): 10 mm x 85 mm x 175 mm, 0.11 kg
overall (including leather wallet and steel selector tool): 10 mm x 215 mm x 175 mm,
- type:
- adding machines (stylus)
- credit:
- Mrs R. Fallman
