Bolt forming one concealed reference point at a fundamental bench mark

Bolt forming one concealed reference point at a fundamental Bolt forming one concealed reference point at a fundamental

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Bolt forming one concealed reference point at a fundamental
Science Museum Group
© The Board of Trustees of the Science Museum

Bolt forming one concealed reference point at a fundamental
Science Museum Group
© The Board of Trustees of the Science Museum

Bolt forming one concealed reference point at a fundamental bench mark, 1914

Details

Category:
Surveying
Object Number:
1914-151
Materials:
bronze
type:
bench mark
credit:
Ordnance Survey