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THE OBSERVATION OF ANGLES
CORRECTIONS TO MEASURED DISTANCES
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a'JK accuracy additive constant angular misclosure angular observations applied calibration Chapter co-ordinate list coefficient column computed using Equation condition equations connecting traverse correction for slope cyclic error datum points distance measurements dN terms dNAB Eastings and Northings EDM instrument error ellipse face-left field book final co-ordinates forward bearing forward station given index error inverted matrix known point least squares linear misclosure loop traverse mean sea level measured distances method of adjustment millimetres multiplied nil correction normal equations Northings misclosures Notes on Table Numerical example observed bearings obtained orientation correction orienting bearings orienting rays preliminary computation psychrometric radians rear station refraction scale factor seconds of arc Section Sh/Be shown slant length standard error Substitution in Equation subtracted surveyors Take reading terminal points theodolite total stations traverse legs traverse stations values variance-covariance matrix variation of co-ordinates vertical angle vertical circle