![](https://coimages.sciencemuseumgroup.org.uk/54/235/large_thumbnail_1898_0030__0004_.jpg)
The "Small" Pocket Calculator
- Made:
- Boston
The "Small" Pocket Calculator, a circular slide rule patented 1918, made by G. Small, Boston, in leather pouch
The "Small" Pocket Calculator, a circular slide rule patented 1918, made by G. Small, Boston, in leather pouch