A Treatise on Practical Surveying: Which is Demonstrated from Its First Principles, Wherein Every Thing that is Useful and Curious in that Art, is Fully Considered and ExplainedF. Lucas, Jun. and Joseph Cushing, 1816 - 472 σελίδες |
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Σελίδα 176
... 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 degress ; so the degrees are numbered from the north to the east or west , and from the south to the east or ...
... 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 degress ; so the degrees are numbered from the north to the east or west , and from the south to the east or ...
Σελίδα 177
... 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 181
... east and west , or the situation of the land is obtained . Secondly , To take the bearing of each respective line from the meridian ; or to perform the office of the cir- cumferentor , or quartered compass , by the theodolite . Set your ...
... east and west , or the situation of the land is obtained . Secondly , To take the bearing of each respective line from the meridian ; or to perform the office of the cir- cumferentor , or quartered compass , by the theodolite . Set your ...
Σελίδα 192
... east , and W. at the bottom of your paper for west . Then let the following field book ' be that which is to be protracted , the bearings being taken from the meridian , whether by a circumferentor , theodolite , or semicircle , and ...
... east , and W. at the bottom of your paper for west . Then let the following field book ' be that which is to be protracted , the bearings being taken from the meridian , whether by a circumferentor , theodolite , or semicircle , and ...
Σελίδα 193
... east . Or if the right hand he made the north , and the left the south , the west will be then up , and the east down . In this case , if the degrees be less than 180 , turn the arc of your protractor upwards , or towards the west ; and ...
... east . Or if the right hand he made the north , and the left the south , the west will be then up , and the east down . In this case , if the degrees be less than 180 , turn the arc of your protractor upwards , or towards the west ; and ...
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A Treatise of Practical Surveying: Which is Demonstrated From Its First ... Robert Gibson Δεν υπάρχει διαθέσιμη προεπισκόπηση - 2021 |
Συχνά εμφανιζόμενοι όροι και φράσεις
20 perches 50 Dist ABCD acres altitude annexed Answer base bearing bisect blank line centre chains and links chord circle circumferentor Co-secant Secant Co-sine Co-tang column contained cyphers decimal decimal fraction Dep Lat difference divided divisor draw east edge EXAMPLE feet field-book figures four-pole chains given angle half the sum height Hence hypothenuse inches instrument latitude length logarithm magnetical measure meridian distance multiplied needle number of degrees object off-sets parallel parallelogram perpendicular piece of ground plane Portmarnock PROB proportion protractor quotient radius right angles right line scale of equal SCHOLIUM sect semicircle side sights sine square root stationary distance sun's suppose survey taken tance Tang tangent thence theo theodolite THEOREM thro trapezium triangle ABC trigonometry true amplitude true azimuth two-pole chains vane variation whence