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 178
... meridian line , or the proper situation of the land . Over the brass circle is a pair of sights , fixed to a ... distance line , from the meridian ; as the circumferentor and quarter- ed compass do . First then , To take the angles of ...
... meridian line , or the proper situation of the land . Over the brass circle is a pair of sights , fixed to a ... distance line , from the meridian ; as the circumferentor and quarter- ed compass do . First then , To take the angles of ...
Σελίδα 181
... meridian ; or to perform the office of the cir- cumferentor , or quartered compass , by the theodolite . Set your ... distance , set up your instrument at the second station ; unscrew it , and set either end of the index to the degree of ...
... meridian ; or to perform the office of the cir- cumferentor , or quartered compass , by the theodolite . Set your ... distance , set up your instrument at the second station ; unscrew it , and set either end of the index to the degree of ...
Σελίδα 186
... distance to the second station , in chains and links : apply your instrument to the second station , taking the ... meridian line as before , to lay the index on the last drawn line , and look backward thro ' the sights ; if you then see ...
... distance to the second station , in chains and links : apply your instrument to the second station , taking the ... meridian line as before , to lay the index on the last drawn line , and look backward thro ' the sights ; if you then see ...
Σελίδα 192
... meridian . fig . 95 . N6 W E 1 S. On your paper , rule lines parallel to each other , at an inch asunder ( being most usual ) or at any other conve- nient distance ; on the left end of the parallels put N. for north , and on the right S ...
... meridian . fig . 95 . N6 W E 1 S. On your paper , rule lines parallel to each other , at an inch asunder ( being most usual ) or at any other conve- nient distance ; on the left end of the parallels put N. for north , and on the right S ...
Σελίδα 228
... meridian passing through either end of it . 3. The difference of latitude , or the northing or south- ing of any stationary line , is the distance that one end of the line is north or south from the other end ; or it is the distance ...
... meridian passing through either end of it . 3. The difference of latitude , or the northing or south- ing of any stationary line , is the distance that one end of the line is north or south from the other end ; or it is the distance ...
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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