A treatise on surveying, comprising the theory and the practice (1906)
Gillespie, William Mitchell, 1816-1868, Staley, Cady, 1840- · New York D. Appleton · leaf 327
elevation for a distance of 1,000 is100, and the point will fall at B. Radial lines are drawn from E * The values of R cos. e are given within the same Umits, the values e vary-ing by intervals of from 1° to 20.57 aio TOrOGRAPIIY. through the points of division on A B, and are marked with the… … lei to A E. To determine the difference in elevation correspondingto any given distance and vertical angle, follow the line parallel toA B, through the point on A E corresponding to the distance, toits intersection with the radial line corresponding to the verticalangle. Transfer this point to A B…
Surveying
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