The trig pillars that helped map Great Britain

The trig pillars that helped map Great Britain

Who would have thought that walking, trigonometry and history combined would make such an interesting read?

One for you to read Malcolm Oakley and Keith Foskett

h/t Sutcliffe Accountants Ltd

http://www.bbc.co.uk/news/in-pictures-36036561

http://www.bbc.co.uk/news/in-pictures-36036561