THE PLANE-TABLE AND ITS USE IN TOPOGRAPHICAL SURVEYING1869 |
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Página 9
... marked points , and again draw the line . If the two lines coincide , no adjustment is neces- sary ; if not , the edge must be made true . There is one deviation from a straight line , which , by a very rare possibility , the edge of ...
... marked points , and again draw the line . If the two lines coincide , no adjustment is neces- sary ; if not , the edge must be made true . There is one deviation from a straight line , which , by a very rare possibility , the edge of ...
Página 13
... marked degree ; " but well - seasoned wood and fidelity in construction must be the main reliance of the surveyor . PAPER . In addition to faulty adjustment of his instru- ment the topographer has an additional source of error to guard ...
... marked degree ; " but well - seasoned wood and fidelity in construction must be the main reliance of the surveyor . PAPER . In addition to faulty adjustment of his instru- ment the topographer has an additional source of error to guard ...
Página 17
... points with the beam- compass , these distances being also given . The degrees and minutes are then plainly marked , usually on the north 2 ; and east sides of the sheet , at one extremity TOPOGRAPHICAL SURVEYING . 17.
... points with the beam- compass , these distances being also given . The degrees and minutes are then plainly marked , usually on the north 2 ; and east sides of the sheet , at one extremity TOPOGRAPHICAL SURVEYING . 17.
Página 22
... marked , also , that in the course of the prosecution of the regular work , no favorable opportunity must be allowed to escape for locating a signal or determining a point which may at some future time be of service . Advantage should ...
... marked , also , that in the course of the prosecution of the regular work , no favorable opportunity must be allowed to escape for locating a signal or determining a point which may at some future time be of service . Advantage should ...
Página 23
... marked objects come within this cate- gory . In fact , it may be set down as a rule , that well- determined signals located at convenient distances over the sheet are more likely to be too few than too fre- quent . Signal poles should ...
... marked objects come within this cate- gory . In fact , it may be set down as a rule , that well- determined signals located at convenient distances over the sheet are more likely to be too few than too fre- quent . Signal poles should ...
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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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