Traces of the theodolite support structure were still to be found many years afterwards at some remote survey points, such as at Soldiers' Lump, the summit of Black Hill in the Peak District of England.
•
The full survey, sometimes called the Principal Triangulation of Great Britain, was begun in 1791 by a team formed under General William Roy (d 1790).
Jesse Ramsden | Theodolite | Sir John William Ramsden, 5th Baronet | Sir James Ramsden | Ramsden, Oxfordshire | Ramsden | John Charles Ramsden |