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Surveying ; a manual of practical instruction in the art of plane surveying, including plotting, leveling, triangulation, line running, cross-sectioning, traversing, and other details of field work (1910)

American School of Correspondence, Phillips, Alfred Edward, 1863- [from old catalog] · Chicago, American school of correspondence · leaf 55

An illustration from Surveying ; a manual of practical instruction in the art of plane surveying, including plotting, leveling, triangulation, line running, cross-sectioning, traversing, and other details of field work, 1910, leaf 55
ed for the most part on construction work. Theseflags are for the purpose of estal)lishing points or retaining a givenline indeflnitely; it is an important tool of the surveyors outrit.To use this flag, it is placed approximately at some reasonabledistance from the instrument and then by the… … FiK. as. TLA^E SrUVEYIXCI 43 position. It is also a conv^enieut device for measuring, approx-imately, distances not exceeding six feet, but where any greatamoiint of accuracy is desired, the method should not be reliediipon. It is an advantage, however, to use the flag as a check, Fig. 39.vhen it…

Surveying

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