One of three mechanical hand calculators.
One of three mechanical hand calculators.
- Materials:
- aluminium alloy & steel (chrome) & plast
- Object Number:
- 1993-2075/1
- type:
- calculators
- Image ©
- The Board of Trustees of the Science Museum
Collection of three mechanical hand calculators.
One of three mechanical hand calculators.
One of three mechanical hand calculators.
One of three mechanical hand calculators.