Elementary SurveyingThree men trek to the remote African interior in search of a lost friend, and reach an unknown land cut off from the world, where terrible dangers threaten anyone who ventures near the spectacular diamond mines of King Solomon. |
From inside the book
Results 1-3 of 22
Page 136
... minus sight followed by a plus sight . Turning points should be solid objects with a definite high point . In differential leveling , horizontal lengths for the plus and minus sights should be made approximately equal . This can be done ...
... minus sight followed by a plus sight . Turning points should be solid objects with a definite high point . In differential leveling , horizontal lengths for the plus and minus sights should be made approximately equal . This can be done ...
Page 137
Paul R. Wolf, Russell Charles Brinker. Level line Line of sight Minus sight Plus sight e2 D1 D2 Figure 7-5 Balancing ... sights , but usually it can be done by following a zigzag path . A bench mark is described in a field book the first ...
Paul R. Wolf, Russell Charles Brinker. Level line Line of sight Minus sight Plus sight e2 D1 D2 Figure 7-5 Balancing ... sights , but usually it can be done by following a zigzag path . A bench mark is described in a field book the first ...
Page 147
... minus sights are kept equal . The error may be serious in going up or down a steep hill where all plus sights are longer or shorter than all minus sights , unless care is taken to run a zigzag line . The size of the collimation error ...
... minus sights are kept equal . The error may be serious in going up or down a steep hill where all plus sights are longer or shorter than all minus sights , unless care is taken to run a zigzag line . The size of the collimation error ...
Other editions - View all
Common terms and phrases
accuracy adjustment angle measurements approximately Asterisks indicate problems axis azimuth backsight bench mark bubble calculated Chapter clamp clockwise clockwise and counterclockwise compass computed contours coordinates correction deflection angles departures and latitudes determined differential leveling direction distance measurements dumpy level EDM instrument electronic elevation difference equipment errors example field notes graduated Gunter's chain horizontal angles horizontal distance level vial line of sight locations magnetic bearing magnetic declination measured angles ments meridian method minus sights misclosure mistakes National Geodetic Survey normal distribution observations obtained plane plate plumb bob position precise procedure Rancho Cordova recorded rod readings satellite Section setup shown in Figure significant figures Similar to Problem slope distance stadia standard deviation Surveying and Mapping surveyors tangent screw tape length tapeperson telescope temperature theodolite topographic total station instruments transit tripod types vernier vertical angles weights zenith angle