Elements of surveying and levelling; with descriptions of the instruments and the necessary tables (1870)
Davies, Charles, 1798-1876 · New York and Chicago, A. S. Barnes & Company · leaf 269
haft; the theodolite being at the 2GG ELEMENTS OF SURVEYING. [book in. second station, K, and the telescope turned in the direction ofthe first station, D, the straight-edge is moved by an assistantuntil both are seen in line from K; their plane then passesthrough the first course; and if the line… … SECON-D METHOD. Let the theodolite, provided with a diagonal eye-piece, beplanted over the station JD, at the foot of the shaft, and afterbeing levelled, let it be directed on the station K. Then, with-out changing the plane of vision, let the theodolite be directedto the top of the shaft, and let…
Surveying
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