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General Principles ART PAGE 1 Surveying Defined
Classes of Surveys
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adjacent adjustment alidade axis backsight base line bearing boundary bubble tube calculated celestial celestial sphere center line chain computed contour lines correct Cosine Sine Cosine Cotan Tan Cotan Cotang Tang Cotang cross-hair curve deflection angle Diff difference in elevation Dist distance dumpy level elongation error of closure established evident follows given grade ground Hence horizontal hour angle instrument stations intersection interval latitude length line of sight located LOGARITHMS OF NUMBERS magnetic bearing mark measured metes and bounds method mile mountain standard observer plane table plat plotted position precision Principal Meridian procedure protractor public lands rear chainman rodman scale screws section corners section lines shown in Fig Sine Cosin Sine SINES AND COSINES slope sources of error stadia stake standard star subdivision surveyor Tang Cotang Tang TANGENTS AND COTANGENTS telescope tion township tract transit traverse upper culmination vernier vertical angle