Advanced Surveying, Volume 2 |
From inside the book
Page 23
... similar to that for common leveling except that three cross - hair readings are recorded for each backsight and foresight . A line is then drawn under each set of readings and the mean of the three readings is recorded below this line ...
... similar to that for common leveling except that three cross - hair readings are recorded for each backsight and foresight . A line is then drawn under each set of readings and the mean of the three readings is recorded below this line ...
Page 144
... similar to those obtained by shading , and hence they render a map legible to the inexperienced reader . They are frequently used in connection with contours to show cliffs or steep earthwork slopes . The contour line has come to be ...
... similar to those obtained by shading , and hence they render a map legible to the inexperienced reader . They are frequently used in connection with contours to show cliffs or steep earthwork slopes . The contour line has come to be ...
Page 224
... similar procedure ; i.e. , the line is drawn from the point B ( plan view ) to I , and where it cuts the trace of the picture plane , g , this point is Picture Plane -Horizon Line 102 C2 Az Elevation Plan Picture Plane In Horizon Line ...
... similar procedure ; i.e. , the line is drawn from the point B ( plan view ) to I , and where it cuts the trace of the picture plane , g , this point is Picture Plane -Horizon Line 102 C2 Az Elevation Plan Picture Plane In Horizon Line ...
Contents
Urbana Illinois | 1 |
The Probable Error | 3 |
Calculation of the Probable Error | 4 |
Copyright | |
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Common terms and phrases
accuracy accurate adjusted alidade altitude azimuth Azimuth of Polaris benchmark bubble camera celestial equator celestial sphere chorobates circle circuit civil closing error computed contour contour line correction cross-hair determined difference in elevation direction distance drawn elongation Ephemeris equator field fixed float formula gage Geodetic Survey given Greenwich grid hence hour angle instrument interval latitude line of sight located longitude mark means measured method object observed perspective view photograph picture plane plane coordinates plate plotted Polaris pole position probable error procedure projection rating curve respect right ascension scale sextant shown in Fig sidereal stadia star station stream stream bed sun's surface tangent tape telescope templets tion transit Transverse Mercator Projection traverse triangle U. S. Coast U. S. Geological Survey upper culmination velocity vernal equinox vernier vertical angle weir