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Importance at surveying
Rounding oft numbers
55 other sections not shown
accuracy adjustment Asterisks indicate problems automatic axis azimuth backsight bench mark bubble calculated clamp clockwise clockwise and counterclockwise compass computed contours corners correction cross hairs curve data collector deﬁned deﬁnition deﬂection angles departures and latitudes determined differential leveling direction dumpy level EDM instrument elevation differences ellipsoid error example ﬁeld notes ﬁgure ﬁnal ﬁrst ﬁxed geoid graduated horizontal angles horizontal distance level vial line of sight magnetic bearing magnetic declination measuring angles meridian method minus sights misclosure National Geodetic Survey objective lens observations obtained ofﬁce plane coordinate systems plate plumb plumb bob position precision procedure proﬁle pseudoranging reﬂector rod readings satellite Section setup shown in Figure signiﬁcant Similar to Problem slope distance speciﬁc stadia stake standard Surveying and Mapping surveyors tangent screw telescope theodolite topographic total station instruments transit tripod vernier vertical angles zenith angle