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INTRODUCTION 1 Engineering Surveys
Use of Surveys
Plane and Geodetic Surveying
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azimuth bearing boundaries bubble tube circle clinometer compass computed contour coordinates corners curvature curve declination determined difference in elevation dumpy level eliminated engineering Ephemeris errors of adjustment example eyepiece field notes foot footscrews formula frequently Geodetic Survey graduations ground horizontal angle horizontal cross-hair horizontal distance inch instrument Keuffel and Esser latitude least count line of sight magnetic magnetic bearing magnetic declination measured ment meridian method miles necessary needle readings objective lens observation obtained ordinary plane plate bubbles plumb bob Polaris position precise procedure pull rear tapeman refraction rod reading sag correction scale screws set-up shown in Fig sketch slope stadia stake station steel tape surveyor tangent taping pin target telescope bubble temperature tion township transit transitman traverse triangulation tripod true length true north two-peg test usually vernier vertical angle vertical axis vertical cross-hair zero