A treatise on surveying, comprising the theory and the practice (1906)
Gillespie, William Mitchell, 1816-1868, Staley, Cady, 1840- · New York D. Appleton · leaf 393
Fig. 546). At A set off an angle, as CAD (ADbeing a prolongation of A B); then walk along the line A 0 with 382 MARITIME OR HTDROGRAPEIC SURVEYING. the index set to half that angle, looking at A directly, and B byreflection, till you come to some point, C, at which they coincide.Then is C A = A 13.… … .-• c \ the line B C prolonged till at some point, D, A and B are seen tocoincide, as in the last problem; thus making A C = C D. Do theBame on A C produced to some point, E. Then is D E = A B. All the methods for overcoming obstacles to measurement, de-termining inaccessible distances, etc. (Part…
Surveying
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![An illustration from Catalogue des monuments et inscriptions de l'Égypte antique / publié sous les auspices de S.A. Abbas II Helmi par la direction générale du Service des antiquités [de l'Égypte] ; par J. de Morgan, U. Bouriant, G. Legrain, G. Jéquier, A. Barsanti (1894)](https://img.insideoutlibrary.com/img/200/ia-cataloguedesmonu22egyp-50-87.webp)
