Regional Maps

18x35 cm

STEREO-PHOTOGRAPHIC SURVEYING
THOMPSON.
THE GEOGRAPHICAL JOURNAL. 1908. 

MAP OF COUNTRY S. OF KESWICK.
Triangulation executed by Officers under instruction under direction of Maj.E.P.Brooker.R.E.
(Average length of sides 2 miles.)
Topography filled in Photographically by one camera party, using Stereoscopic method and Stereo-plotter.
No. of view pairs 30. Area 50 sqr. miles.
(Rate of field work 10 Sqr. miles per diem)

Published by the Royal Geographical Society.

Folds. Repairs to left edge and top centre fold split to Keswick.