Hydrographical surveying : a description of means and methods employed in constructing marine charts (1920)
Wharton, W. J. L. (William James Lloyd), 1843-1905, Field, Arthur Mostyn, 1855- · London : J. Murray · leaf 495
jects that are being used forfixing, divide the distance between them into |, -|, |, etc., asmay be necessary. Then, setting the observed angles on thepointer, plot a position, using the centre object and the twoobjects obtained by division. 30 460 HYDROGRAPHICAL SURVEYING [chap. xx. The true… … AC Fig. 113. The following example (see Fig. 113) will explain thisgraj)hically: True positions of the objects. Assumed positions of A, A B being divided ABC Xo Xg p Po p. 2 3^ Assumed positions of C, A C bemg divided into \,\- True position, using A, B, and C.Position using Xg B y2 (1).Position…
Hydrographic surveying · Nautical charts
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