THE PLANE-TABLE AND ITS USE IN TOPOGRAPHICAL SURVEYING1869 |
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Página 20
... close at hand ready for reference . It has been suggested that it would be an advantage to have it engraved upon the rule of the alidade , and it has also been proposed to have the scale drawn upon the sheet , and thus afford a ...
... close at hand ready for reference . It has been suggested that it would be an advantage to have it engraved upon the rule of the alidade , and it has also been proposed to have the scale drawn upon the sheet , and thus afford a ...
Página 23
... close to the edge of the rule with a finely sharp- ened hard pencil , and that in sketching one somewhat softer is used . If the table and alidade be in proper con- dition , the contact of the fiducial edge with the paper will be ...
... close to the edge of the rule with a finely sharp- ened hard pencil , and that in sketching one somewhat softer is used . If the table and alidade be in proper con- dition , the contact of the fiducial edge with the paper will be ...
Página 34
... close examination of the projection , plotting , and data of triangulation , ought to be made before any point or set of points is condemned . THREE - POINT PROBLEM . - It is often expedient to place the table in position at an ...
... close examination of the projection , plotting , and data of triangulation , ought to be made before any point or set of points is condemned . THREE - POINT PROBLEM . - It is often expedient to place the table in position at an ...
Página 36
... close proximity thereto . The following cases are believed to include all possible conditions of the relation of the position of an undeter- mined point to three fixed points . The surveyor is sup- posed to face his signals and the ...
... close proximity thereto . The following cases are believed to include all possible conditions of the relation of the position of an undeter- mined point to three fixed points . The surveyor is sup- posed to face his signals and the ...
Página 51
... close attention has been given to the contours of the dunes , are of great value for comparison if every detail is carefully given . Even in places where the winds are uncertain , proper contouring discovers dunes which travel along the ...
... close attention has been given to the contours of the dunes , are of great value for comparison if every detail is carefully given . Even in places where the winds are uncertain , proper contouring discovers dunes which travel along the ...
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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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