Steel scaling rule 1:500 metres and 1:200 metres.

Made:
1960-1980
Steel scaling rule 1:500 metres and 1:200 metres.

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Steel scaling rule 1:500 metres and 1:200 metres.
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