Steel scaling rule 1:500 metres and 1:200 metres.
- Made:
- 1960-1980
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Science Museum Group
© The Board of Trustees of the Science Museum
Steel scaling rule 1:500 metres and 1:200 metres.
Details
- Category:
- Mathematics
- Object Number:
- 1995-76
- Materials:
- steel
- type:
- scale rule
- credit:
- Borough of Bromley
