![Case for Otis King pocket calculator](https://coimages.sciencemuseumgroup.org.uk/428/842/large_smg00047644.jpg)
Otis King pocket calculator (a spiral logarithmic slide rule)
- Made:
- London
Otis King pocket calculator (a spiral logarithmic slide rule), Model K, in box with instructions
Details
Parts
![Case for Otis King pocket calculator](https://coimages.sciencemuseumgroup.org.uk/428/842/large_smg00047644.jpg)
Otis King pocket calculator
Otis King pocket calculator (a spiral logarithmic slide rule).
- Materials:
- paper (fibre product) and steel (metal)
- Object Number:
- 1985-271 Pt2
- type:
- spiral slide rule