There are many excellent maps issued, but it is best to go to the fountainhead, to the publications of the ordnance survey.
He quitted Edinburgh in 1824, and was given a post in the ordnance survey.
The ordnance survey, too, no longer depends on the war office but upon the board of agriculture and fisheries.
It is, according to the ordnance survey, 637 feet high, and its position gives it an appearance of even greater eminence.
The ordnance survey maps in England are somewhat of an approach thereto, but they are in no way as interesting to study.
It was moved by the ordnance survey from the higher ground, heedless of the warning engraved on it.
(it is not, I believe, marked on the ordnance survey;) and would it be possible to traverse it at the present time?
On leaving college in 1824 he received a post in the ordnance survey, but gradually drifted into engineering work.
Be able to measure a gradient, contours, conventional signs of ordnance survey and scales.
Many of the signs used by the ordnance survey are ready to hand, and these can often be used to designate plant associations.