Advanced Surveying: A Text-book for Students |
Common terms and phrases
accuracy adjusted altitude level approximately average azimuth base-line bubble calculated catenary Celestial Pole centre line chainage chronometer circular curve collimation control points correction cosē cosec cross-hairs curvature declination difference of level direction distance e₁ eliminate equal equation of condition EXAMPLE fixed formula Greenwich Greenwich mean grid height hemisphere horizontal angle horizontal circle hour angle inclination instrument intersection interval latitude length log sine longitude mean noon measured meridian method micrometer negative object glass observations parallax parallel perpendicular photographs plane plate position principal point radius rays reading refraction right ascension sextant short lines side sidereal sidereal day sinē spherical triangle spirit level star stations stereoscope straight line survey tangent tangential angle tape telescope temperature theodolite tion transition curve traverse trunnion axis tunnel vernier vertical circle wire Y₁ zero δα