Ordnance Survey:
Surveyors and trig pillar
Ordnance Survey:
Surveyor team at work
Ordnance Survey:
Surveyor capturing detail
Ordnance Survey:
Surveyors at work
Ordnance Survey:
Surveyor at work
Ordnance Survey:
Surveying and capturing detail by hand
Ordnance Survey:
Surveyors on a building site
Ordnance Survey:
Surveyors at work
Ordnance Survey:
Cartography
Ordnance Survey:
Cartography
Ordnance Survey:
Cartography
Ordnance Survey:
Cartography
Ordnance Survey:
Cartography
Ordnance Survey:
Cartography
Ordnance Survey:
Cartography