THE PLANE-TABLE AND ITS USE IN TOPOGRAPHICAL SURVEYING1869 |
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Página 6
... to some well - defined object , and by after reference to it any movement which may have taken place , out of position , in the table during its use , can be detected and adjusted . This , however , is 6 THE PLANE - TABLE AND ITS USE IN.
... to some well - defined object , and by after reference to it any movement which may have taken place , out of position , in the table during its use , can be detected and adjusted . This , however , is 6 THE PLANE - TABLE AND ITS USE IN.
Página 20
... 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 correction of error of shrinkage ...
... 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 correction of error of shrinkage ...
Página 28
... 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 completed from this point ; the alidade removed , the table raised ...
... 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 completed from this point ; the alidade removed , the table raised ...
Página 39
... reference to the three lines from A B and C accordingly . Netto's method . ( Figures 8 , 9 , and 10 , Plate No. 4 . ) — This method of determining the true position from the false intersections is ingenious and of much practical value ...
... reference to the three lines from A B and C accordingly . Netto's method . ( Figures 8 , 9 , and 10 , Plate No. 4 . ) — This method of determining the true position from the false intersections is ingenious and of much practical value ...
Página 50
... reference either in direction or charac- ter to the other elevations of the vicinity ; and so also when the ground presents the appearance of a confused mass of broken bluffs , rocky faces and cleft surfaces 50 THE PLANE - TABLE AND ITS ...
... reference either in direction or charac- ter to the other elevations of the vicinity ; and so also when the ground presents the appearance of a confused mass of broken bluffs , rocky faces and cleft surfaces 50 THE PLANE - TABLE AND ITS ...
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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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