Practical Military Surveying And Sketching PDF Download

This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1865 edition. Excerpt: ...of any country may be made. The first proceeding in making a sketch, should be to select such i position, that the principal important objects may be seen.. When representing these on paper, some liberty may be permitted, so that we may represent upon the sketch objects which may not be actually visible from our position, in consequence of trees, a slight hill, or some other obstacle intervening. Perhaps if we moved forty or fifty paces one way or the other, a battery or some other important object would become visible. To conceal the battery by a tree would not be judicious, although actually on the ground from our position the battery might not be visible. When making a sketch, the most prominent objects should be first selected, and their relative positions marked by a dot on the paper. Then, these objects being sketched, the details may be proceeded with, care being taken that too much attention is not devoted to the mere outline of some trees, or form of ground, which would vary in appearance from every point from which it was viewed. Thus, one or two outline landscape sketches, will aid considerably, to convey to the imagination of any person, an idea of the ground of which a reconnaissance has been made. The report may be sent in, written upon common writing paper or foolscap, and if voluminous, attached to the plan of the ground, or separate. "When a line of road has been sketched, and reconnoitred, the plan of the road, and the report, may be prepared in somewhat the following form: --CHAPTER IX. THE CORRECT MEASUREMENTS OF BASE LINES. The correctness of all surveys, must mainly depend upon the accuracy with" which the distance between two observing stations is measured. The first operation to be undertaken in a...