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 182
r. Draw lines at right angles to the front lines, andon them lay off the depths of the houses, with the same scaleas that used for the base-line. To find the length of any line drawn on the paper, as theline 1, drawn through A, for example, place the dividers at Aand extend them to the other… … 180 ELEMENTS OF SURVEYING. [book n. Changing the Paper. 143. When one paper is filled, and there is yet more workto be done, let the paper be removed, and a second paper puton the table; after which, the table may be used as before. ISTow, in order that the two papers may be put together andform…
Surveying
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