Merriman, Mansfield, 1848-1925 · New York Wiley · leaf 41
ng 90, that ofnorth 180°, and that of east 270°. This system is also em-ployed for the linear coordinates of plane surveys based ongeodetic triangulations, and it will be used throughout thisvolume. For a city survey the origin may be taken throughthe tower of the city hall, or, if it is desired to… … 38 PRECISE PLANE TRIANGULATION. II. usually taken as i ooo feet or meters, or loooo feet ormeters. In thinking of the azimuth of a line the student shouldimagine himself to be standing at the end which is firstmentioned in its name and to be looking toward the otherend; then he should imagine a…
Geodesy · Surveying
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