A treatise on levelling, topography, and higher surveying (1876)
Gillespie, W. M. (William Mitchell), 1816-1868, Staley, Cady, b. 1840, ed · New York, D. Appleton and company · leaf 74
This last arrangement of a cord or wire, Fig. 71, is usedin mine surveying. A light surveyors chain may be similarlyused, with the advantage of giving, at the same time, differ-ence of heights and distance. 56 LEVELLING, TOPOGRAPHY, AND HIGHER SURVEYING. Diff. of lits. — length of chain x sin.…
Surveying
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
![An illustration from Vnderweysung der Messung : mit dem Zirkel vn[d] Richtscheyt in Linien, Ebnen vnnd gantzen Corporen (1525)](https://img.insideoutlibrary.com/img/200/ia-vnderweysungderm00drer-108-208.webp)