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 99
... ; 3. the angles formed by the planes , in which these lines are drawn , or are supposed to be traced . On the comparison of these three objects , 394978 depends the solution of all questions , that can be TRIGONOMETRY . 9.9.
... ; 3. the angles formed by the planes , in which these lines are drawn , or are supposed to be traced . On the comparison of these three objects , 394978 depends the solution of all questions , that can be TRIGONOMETRY . 9.9.
Σελίδα 100
... object of what is called Plane Trigonometry , because the six parts , con- sidered here , are in the same plane : it is also de- nominated Rectilineal Trigonometry . The second question belongs to Spherical Trigonometry , wherein the ...
... object of what is called Plane Trigonometry , because the six parts , con- sidered here , are in the same plane : it is also de- nominated Rectilineal Trigonometry . The second question belongs to Spherical Trigonometry , wherein the ...
Σελίδα 135
... object fixed in the extreme point of the line to be measured ; this is a direction for the hinder chain- man to govern the foremost one by , in order that the distance may be measured in a right line ; for if the hinder chainman causes ...
... object fixed in the extreme point of the line to be measured ; this is a direction for the hinder chain- man to govern the foremost one by , in order that the distance may be measured in a right line ; for if the hinder chainman causes ...
Σελίδα 136
... object at the termination of the line , as before : so that , the number of pegs taken up by the hinder chainman , expresses the number of chains ; to which , if the odd links be annexed , the distance line required in chains and links ...
... object at the termination of the line , as before : so that , the number of pegs taken up by the hinder chainman , expresses the number of chains ; to which , if the odd links be annexed , the distance line required in chains and links ...
Σελίδα 151
... object be set at B , draw yourself backward to any convenient distance C , so that B may cover A : from B , lay off any other distance by the river's side to E , and complete the parallelogram EBCD : stand at D , and cause a mark to be ...
... object be set at B , draw yourself backward to any convenient distance C , so that B may cover A : from B , lay off any other distance by the river's side to E , and complete the parallelogram EBCD : stand at D , and cause a mark to be ...
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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