A treatise on surveying, comprising the theory and the practice (1906)
Gillespie, William Mitchell, 1816-1868, Staley, Cady, 1840- · New York D. Appleton · leaf 400
d C B, and producing them to meet B 0 and B 0,produced, in D and E. The line D E should pass through S; for,the angles BSD and BSE being right angles, the lines D S andS E form one straight line. The figure shows these three checks by its dotted lines. 819. Instrumental Solution. The stations can… … with each other any angles desired. This is effected by means ofgraduated arcs carried on their ends, or by taking off with theirpoints (as with a pair of dividers) the proper distance from a scaleof chords constructed to a radius of their length. Being thus set soas to make the two observed…
Surveying
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