Bolt forming upper reference point on top of granite pillar at fundamental bench mark

Bolt forming upper reference point on top of granite pillar at Bolt forming upper reference point on top of granite pillar at

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Bolt forming upper reference point on top of granite pillar at
Science Museum Group
© The Board of Trustees of the Science Museum

Bolt forming upper reference point on top of granite pillar at
Science Museum Group
© The Board of Trustees of the Science Museum

Bolt forming upper reference point on top of granite pillar at fundamental bench mark, 1914

Details

Category:
Surveying
Object Number:
1914-152
Materials:
bronze
type:
bench mark
credit:
Ordnance Survey