The Theory and Practice of Surveying: Containing All the Instructions Requisite for the Skilful Practice of this ArtJ.J. Harper, 1828 - 435 σελίδες |
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Σελίδα 4
... east or west point of the survey , with the method of dis- covering these points from the Field Notes , and the method of cor- recting the errors by the pen , when the survey does not close : also another new method for calculating the ...
... east or west point of the survey , with the method of dis- covering these points from the Field Notes , and the method of cor- recting the errors by the pen , when the survey does not close : also another new method for calculating the ...
Σελίδα 119
... east into 90 , from the north to the west into 90 , from the south to the east into 90 , and from the south to the west into 90 degrees ; so the degrees are numbered from the north to the east or west , and from the south to the east ...
... east into 90 , from the north to the west into 90 , from the south to the east into 90 , and from the south to the west into 90 degrees ; so the degrees are numbered from the north to the east or west , and from the south to the east ...
Σελίδα 120
... east , north and west , south and east , or south and west points in the bottom of the box , then put down NE , NW , SE , or SW , annexing thereto the number of degrees cut by the needle on the side of the ring , counting from the north ...
... east , north and west , south and east , or south and west points in the bottom of the box , then put down NE , NW , SE , or SW , annexing thereto the number of degrees cut by the needle on the side of the ring , counting from the north ...
Σελίδα 122
... east and west , or the situation of the land , is obtained . To take the bearing of each respective line from the meridian ; or to perform the office of the circumferentor , or quartered compass by the theodolite . Set your instrument ...
... east and west , or the situation of the land , is obtained . To take the bearing of each respective line from the meridian ; or to perform the office of the circumferentor , or quartered compass by the theodolite . Set your instrument ...
Σελίδα 128
... east , and W at the bottom of your for west . paper Then let the following field - book be that which is to be pro- tracted , the bearings being taken from the meridian , whether by a circumferentor , theodolite , or semicircle , and ...
... east , and W at the bottom of your for west . paper Then let the following field - book be that which is to be pro- tracted , the bearings being taken from the meridian , whether by a circumferentor , theodolite , or semicircle , and ...
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Συχνά εμφανιζόμενοι όροι και φράσεις
ABCD acres altitude Answer arch base bearing centre chains and links circle circumferentor Co-sec Co-tang column compasses contained cube root decimal difference of latitude Dist divided divisions divisor draw east Ecliptic edge EXAMPLE feet field-book figure four-pole chains given angle given number half the sum height Hence Horizon glass hypothenuse inches instrument length logarithm measure Meridian Altitude meridian distance method multiplied natural co-sine natural number natural sine Nonius number of degrees object observed off-sets opposite parallel parallelogram perches perpendicular plane prob PROBLEM proportional protractor Quadrant quotient radius rhombus right angles right line Secant sect semicircle Sextant side square root station subtract Sun's survey taken Tang tangent theo theodolite THEOREM trapezium triangle ABC trigonometry two-pole chains vane versed sine vulgar fraction whence