THE PLANE-TABLE AND ITS USE IN TOPOGRAPHICAL SURVEYING1869 |
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Página 35
... point " prob- lem is available . Except in this instance , however , the lines will form a small triangle , called the triangle of er- ror , or two of them will be parallel ... point sought falls without the TOPOGRAPHICAL SURVEYING . 35.
... point " prob- lem is available . Except in this instance , however , the lines will form a small triangle , called the triangle of er- ror , or two of them will be parallel ... point sought falls without the TOPOGRAPHICAL SURVEYING . 35.
Página 36
... points . ( Case 4. ) In case the point sought falls on the range of any two of the points , and the table is deflected from true position , the lines from the two points will be parallel , intersected by the line from the third point ...
... points . ( Case 4. ) In case the point sought falls on the range of any two of the points , and the table is deflected from true position , the lines from the two points will be parallel , intersected by the line from the third point ...
Página 37
... point sought is without the great triangle and within the great circle , the true point is without the triangle of error , and the line drawn from the middle point lies between the true point and the intersection of the other two lines ...
... point sought is without the great triangle and within the great circle , the true point is without the triangle of error , and the line drawn from the middle point lies between the true point and the intersection of the other two lines ...
Página 38
... point sought is on the range of either two points , and the table de- flected from true position , the lines drawn from these points will not intersect , but will be parallel , intersected by the line drawn from the third point ; the ...
... point sought is on the range of either two points , and the table de- flected from true position , the lines drawn from these points will not intersect , but will be parallel , intersected by the line drawn from the third point ; the ...
Página 39
... point sought ) . Set the alidade on db and revolve the table so that the line of sight passes the signal B. Resect again on a b and c and we have the triangle of error g g'g ' . Join e and g , and through both points draw parallel lines ...
... point sought ) . Set the alidade on db and revolve the table so that the line of sight passes the signal B. Resect again on a b and c and we have the triangle of error g g'g ' . Join e and g , and through both points draw parallel lines ...
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Términos y frases comunes
25 cents 50 cents accuracy adjustment alidade axis brass BRIDGES centre chain circle clamp Cloth Coast Survey construction contours correct cross-hairs curves declinatoire depression determined diagram direction distance Edition Engineers engravings Feet fiducial edge field forward line forward signal GEOLOGY OF PENNSYLVANIA Graphical Statics ground HAND-BOOK height hills horizontal Hypsometry instrument intersection line of sight lines drawn lithographic plates marked means measured meridian metal method metres middle point minutes of arc Morocco necessary objects observed Paper covers parallel pencils perpendicular placed plane plane-table plotted points point occupied point sought falls PRACTICAL TREATISE Prof projection QUALITATIVE CHEMICAL ANALYSIS resection right angles rule scale sheet shore line side sketching Slide Valve slope station Steam Steel straight edge surveyor taken tangent screw telemeter telescope tion topographer triangle of error triangulation points true point U. S. Navy vertical arc wood-cuts Yale College ZERAH COLburn
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