The Theory and Practice of Surveying: Containing All the Instructions Requisite for the Skilful Practice of this ArtEvert Duyckinck, 1814 - 508 σελίδες |
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Σελίδα 146
... station No. 1 ; and in the same line , under the title of distances , in the third column , let the measure of the line AB in chains and links be inserted . Being now arrived at B , let one chain be laid in a direct line from B towards ...
... station No. 1 ; and in the same line , under the title of distances , in the third column , let the measure of the line AB in chains and links be inserted . Being now arrived at B , let one chain be laid in a direct line from B towards ...
Σελίδα 147
... station ; the strand then is the boundary from thence to the sixth , and from the sixth to the first station , the widow J. G's part of Grange is the boundary . It is absolutely necessary to insert the persons ' names , and town - lands ...
... station ; the strand then is the boundary from thence to the sixth , and from the sixth to the first station , the widow J. G's part of Grange is the boundary . It is absolutely necessary to insert the persons ' names , and town - lands ...
Σελίδα 149
... station . If any line of the field be inaccessible , as sup- pose CD to be , then by way of proof that the distance CD is true , let the measure of the angle CHD be taken by the line oo , with the chain : if this angle corresponds with ...
... station . If any line of the field be inaccessible , as sup- pose CD to be , then by way of proof that the distance CD is true , let the measure of the angle CHD be taken by the line oo , with the chain : if this angle corresponds with ...
Σελίδα 153
... station ; and let a person stand at the next angle B , or cause a staff , with a white sheet , to be set there perpendicularly for an object to take your view to : then having placed your instrument horizontally ( which is easily done ...
... station ; and let a person stand at the next angle B , or cause a staff , with a white sheet , to be set there perpendicularly for an object to take your view to : then having placed your instrument horizontally ( which is easily done ...
Σελίδα 154
... station No. 1 . It is customary , and even necessary , to cause a sod to be dug up at each station , or place where you fix the instrument : to the end , that if any error should arise in the field - book , it may be the more readily ...
... station No. 1 . It is customary , and even necessary , to cause a sod to be dug up at each station , or place where you fix the instrument : to the end , that if any error should arise in the field - book , it may be the more readily ...
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Συχνά εμφανιζόμενοι όροι και φράσεις
acres altitude Answer arch base bearing blank line centre chains and links circle circle of latitude circumferentor Co-sec Co-tang column compasses contained decimal Dep Lat Dep difference Dist divided divisions draw east Ecliptic edge EXAMPLE feet field-book figures fore four-pole chains geometrical series given number half the sum Horizon glass hypothenuse inches instrument Lat Dep Lat latitude length logarithm measure meridian distance multiplied Natural Co-sines natural sine Nonius number of degrees object observed off-sets opposite parallelogram perches perpendicular plane pole pole star PROB proportion protractor Quadrant quotient radius right angles right line scale of equal SCHOLIUM screw Secant sect semicircle Sextant side sights square root station stationary distance subtracted survey taken Tang tangent theo theodolite trapezium triangle ABC trigonometry vane versed sine vulgar fraction