Plane Surveying |
Contents
Introduction ARTICLE 1 Definitions | 1 |
Purposes of Surveys 22 | 2 |
Measurement of Distances 5 Length of a Line | 3 |
Copyright | |
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Common terms and phrases
accuracy alidade azimuth backsight batter boards bench marks bubble tube celestial equator circle clamp closed traverse computed contour correction Cosin Cotang deflection angle determined DIETZGEN Diff dist dumpy level east edge engineer's scale equal error of closure established field notes grade line guide meridian horizontal cross hair horizontal distance illustrated in Fig initial point instrument intersection intervals known points latitudes and departures length and bearing line of sight longitude lost corner magnetic bearing magnetic declination measured miles objective lens observer obtained parallel of latitude photographs plane table plat plate Polaris position principal meridian protractor range line reference line right ascension rod intercept rod reading scale secant line set-up point shown in Fig Sine slope stake stadia distance stadia rod Subdivision survey Tang tangent telescope tion township corners transit is set usually vernier vertical angle vertical curve vertical distance