The theory and practice of surveying. Designed for the use of surveyors and engineers generally, but especially for the use of students in engineering (1886)
Johnson, J. B. (John Butler), 1850-1902 · New York, J. Wiley & sons · leaf 302
ell tohave a series of paper templets made, with the various curvesfor their outer and inner edges. Of course, these are cut withradii laid off to the scale of the drawing. It is still more con-venient to have these curves, laid off to scale, on a piece ofisinglass, horn, or tracing-paper (not… … Fig. 66. In this way the line is laid out over the map. The ques-tions of greater or less curvature have been balanced against aless or greater first cost, and greater or less operating expense.The question of shifting it laterally has also been examined,and finally a definite location fixed upon…
Surveying
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