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 114
F,g. 72. between the standards: but for city work, triaiigulatioii, etc., thecompass is dispensed witli. PLANE SL^RVEYIXG lo:> For iiRasuring vertical angles, the transit is fitted with avertii-al arc or circle divided usually to one-half degrees, and … Fig. 73.reading to single minutes by the vernier. A level tube may also beattached to the under side of the telescope; and when this is 104 PLANE SUEVETmG Ijrovided the transit mfiy hn nsed as a leveling instniment.A striding level resting iiix)n the standards uuij also be ijrovided,by means of…
Surveying
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