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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Αποτελέσματα 1 - 5 από τα 79.
Σελίδα 50
... laid on the triangle DEF , so as to make the points A and B coincide with D and E , which they will do , because AB DE ( by the hypothesis ) ; and since the angle A = D , the line AC will fall along DF , and inasmuch as they are ...
... laid on the triangle DEF , so as to make the points A and B coincide with D and E , which they will do , because AB DE ( by the hypothesis ) ; and since the angle A = D , the line AC will fall along DF , and inasmuch as they are ...
Σελίδα 64
... Lay BL from B to L ; from B with the line BO , describe an arc , and from L with LO describe another arc ; from O , the intersecting point ... laid on the other , the sides 1 will mutually agree with each other , and therefore 64 GEOMETRICAL.
... Lay BL from B to L ; from B with the line BO , describe an arc , and from L with LO describe another arc ; from O , the intersecting point ... laid on the other , the sides 1 will mutually agree with each other , and therefore 64 GEOMETRICAL.
Σελίδα 66
... lay off on each side , the equal distances , AC , AD ; and from C and D , as cen- tres , with any interval greater than AC or AD , describe two arcs intersecting each other in B ; from A to B draw the line AB , and it will be the ...
... lay off on each side , the equal distances , AC , AD ; and from C and D , as cen- tres , with any interval greater than AC or AD , describe two arcs intersecting each other in B ; from A to B draw the line AB , and it will be the ...
Σελίδα 69
... lay again the line A , from Cto H , and through H , draw HI parallel to FG ( by prob . 8. ) so is ĈI the third ... lay the line A , from E to G ; the line B , from E to I ; and draw the line IG ; lay the line C , from E to H , and ( by ...
... lay again the line A , from Cto H , and through H , draw HI parallel to FG ( by prob . 8. ) so is ĈI the third ... lay the line A , from E to G ; the line B , from E to I ; and draw the line IG ; lay the line C , from E to H , and ( by ...
Σελίδα 70
... lay the line A , from A to B , and the line B , from B to C , on the point B , which is the joining point of the lines A and B ; erect a perpendicular BD ( by prob . 5. ) bisect AC in E ( by prob . 4. ) and de- scribe the semicircle ADC ...
... lay the line A , from A to B , and the line B , from B to C , on the point B , which is the joining point of the lines A and B ; erect a perpendicular BD ( by prob . 5. ) bisect AC in E ( by prob . 4. ) and de- scribe the semicircle ADC ...
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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