The Theory and Practice of Surveying: Containing All the Instructions Requisite for the Skilful Practice of this ArtJ.J. Harper, 1828 - 435 páginas |
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Página 9
... bearings of their most remarkable places from each other , it is usually denominated Maritime Surveying . This branch of Sur- veying , however , demands no other qualifications than those , which should be thoroughly acquired by every ...
... bearings of their most remarkable places from each other , it is usually denominated Maritime Surveying . This branch of Sur- veying , however , demands no other qualifications than those , which should be thoroughly acquired by every ...
Página 117
... the south end is generally bearded towards its extremity , and sometimes not , but its arm is a naked right line from the cap at the centre . Having taken the degrees or bearing of the first stationary THE CIRCUMFERENTOR . 117.
... the south end is generally bearded towards its extremity , and sometimes not , but its arm is a naked right line from the cap at the centre . Having taken the degrees or bearing of the first stationary THE CIRCUMFERENTOR . 117.
Página 118
... bearing of the first stationary line AB , let the line be measured , and the length thereof in chains and links be ... bearings and stationary distances . Having done with your first station , set the instrument over the hole or spot ...
... bearing of the first stationary line AB , let the line be measured , and the length thereof in chains and links be ... bearings and stationary distances . Having done with your first station , set the instrument over the hole or spot ...
Página 119
... bearings of the lines AB and BC ; you may then set up your instrument at D , from whence take a back - sight to C , and a fore - sight to E : thus the bearings may be taken quite round , and the stationary distances being an- nexed to ...
... bearings of the lines AB and BC ; you may then set up your instrument at D , from whence take a back - sight to C , and a fore - sight to E : thus the bearings may be taken quite round , and the stationary distances being an- nexed to ...
Página 120
... bearings , as before ; the difference of these bearings , if less than 180 , will be the quantity of degrees contained in the given angle ; but if more , take it from 360 , and the remainder will be the degrees contained in the given ...
... bearings , as before ; the difference of these bearings , if less than 180 , will be the quantity of degrees contained in the given angle ; but if more , take it from 360 , and the remainder will be the degrees contained in the given ...
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Términos y frases comunes
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