Elements of surveying and navigation : with a description of the instruments and the necessary tables (1847)
Davies, Charles, 1798-1876 · New York : A.S. Barnes & Co. · leaf 141
t the table be then levelled, after which,place the ruler again on the base line, and bring the table toits proper position by the tangent-screw, and continue the ad-justment until the extremity of the base line on the paper isdirectly over the station, and in the same vertical plane withthe base… … sections of the corresponding lines 1,1, 2,2, 3,3, 4,4, &c*,determine, on the paper, the positions of the several objects;and a reference of these lines to the scale of equal parts,determines the true distances. 163. Let it be required, for ex-ample, to determine, by meansof the plain-table,…
Surveying · Navigation
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