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Theory of Measurements and Errors
Surveying Field Notes
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accuracy adjustment alidade azimuth backsight bearings bubble circle clamp closure compass computed contours coordinates corners correct cross hair curve datum deflection angle determined difference direction distance dumpy level elevation engineer's engineer's scale example feet field notes flying height formula grade graduated ground Gunter's chain horizontal angles hour angle instrument intersection Keuffel and Esser latitudes and departures level vial line of sight magnetic magnetic bearing magnetic declination mark measured ment meridian method miles minus sights objective lens observer obtained offsets optical parallax parallel photogrammetry plane table plates plotted plumb bob Polaris position precision procedure recorded rod reading scale shown in Fig Similar to problem sketch slope Sources of error stadia stakes standard station surveyor surveys tape length tapeman telescope terrain theodolite tion topographic township transit triangle tripod vernier vertical angle vertical photograph zero