Hinks, Arthur R. (Arthur Robert), 1873-1945 · Cambridge, University press · leaf 170
. When a sufficiency of these have been fixed, we beginthe new operation of putting in the important topographicaldetail, the roads, fords, railway bridges, and so on, which areinconspicuous objects in general, as viewed from the rulingpoints, and cannot be determined by intersections. But, onthe… … I. Trough Compass and Case.
Maps · Surveying
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
