A complete treatise on practical land-surveying, in seven parts; (1839)
Nesbit, A[nthony], 1778-1859. [from old catalog] · London, Longman, Orme, Browne, Green, and Longmans; [etc., etc.] · leaf 247
m that found by equidistant ordinates. Note.—When a curve-line offset is to be reduced to a triangle by the parallelruler, a competent number of points must be assumed in the curve, to denoteangles. These points must be taken at such distances from each other, thata right line drawn between any two… … Erect a perpendicular at one end of the base, for a temporaryline; and assume a competent number of points in tbe curveto denote angles. Lay the ruler from 1 to 3 ; move it parallel to 2; and markthe temporary line at 1. Lay the ruler from 1 to 4 ; move it parallel to 3; and markthe temporary line…
Surveying
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
