Geodaesia : or, The art of surveying and measuring land made easy (1768)
Love, John, fl. 1688, Clark, Samuel · London : Printed for J. Rivington · leaf 41
han before, and fetting one foot in thepoint D, with the other defcribe the arch FFjthen, without altering your compafles, fet one footin the point E> and with the other defcribe the archGG. C Laffly, 18 Geometrical Problems^ Laftly, lay your ruler to the point C, and the in-terfe&ion H of… … p R o B. n. To raife a perpendicular upon the end of a line. ^> ..0 B Geometrical Problems. 19 A B is the line given, and at B it is required toereft a perpendicular, as B C. Open your compares to an ordinary extent, andfetting one foot in the point B, let the other fallat adventure, no matter…
Surveying
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