THE PLANE-TABLE AND ITS USE IN TOPOGRAPHICAL SURVEYING1869 |
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Página 27
... . , should be likewise taken . the station occupied be in an elevated and prominent position , its height should be observed , both as a guide . If for putting in the contours at the point , and TOPOGRAPHICAL SURVEYING . 27.
... . , should be likewise taken . the station occupied be in an elevated and prominent position , its height should be observed , both as a guide . If for putting in the contours at the point , and TOPOGRAPHICAL SURVEYING . 27.
Página 28
for putting in the contours at the point , and to serve as a point of reference in taking heights at other places , the method of doing which will be given hereafter . The ne- cessary sketching is now done , omitting nothing that can be ...
for putting in the contours at the point , and to serve as a point of reference in taking heights at other places , the method of doing which will be given hereafter . The ne- cessary sketching is now done , omitting nothing that can be ...
Página 49
... CONTOURS . - If there be any feature which more pe- culiarly distinguishes one section of a country from another , imparting to it its most striking characteristic , and to which all other accidents of ground are subordinate , it is to ...
... CONTOURS . - If there be any feature which more pe- culiarly distinguishes one section of a country from another , imparting to it its most striking characteristic , and to which all other accidents of ground are subordinate , it is to ...
Página 50
... contour from day to day as the work progresses . By keeping in view the characteristic features of the hills in the section of country under survey , the topogra- pher will be able to give a naturalness to a sheet , which , by a mere ...
... contour from day to day as the work progresses . By keeping in view the characteristic features of the hills in the section of country under survey , the topogra- pher will be able to give a naturalness to a sheet , which , by a mere ...
Página 51
... contours , whatever may be their local complexity and irregularity of outline , follow the same general direction as the main ridges of the sheet . Along the intermediate shores , upon islands , or long arms running far out into the sea ...
... contours , whatever may be their local complexity and irregularity of outline , follow the same general direction as the main ridges of the sheet . Along the intermediate shores , upon islands , or long arms running far out into the sea ...
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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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