
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

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