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 Cushing & Jewett, J. Robinson printer, 1822 - 326 páginas |
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Resultados 1-5 de 47
Página 25
... length without breadth , as AB . fig . 1. and 2 . fig . 1 . A- -B 4. The extremities of a line are points , as the extremities of the line AB are the points A and B. 5. A right line is the shortest that can be drawn between any two ...
... length without breadth , as AB . fig . 1. and 2 . fig . 1 . A- -B 4. The extremities of a line are points , as the extremities of the line AB are the points A and B. 5. A right line is the shortest that can be drawn between any two ...
Página 46
... length to the radius . Thus in the circle AEBD , if the arc AEB be an arc of 60 degrees , and the chord AB be drawn ; then D AB - CB - AC . fig . 33 . fig . 33 . E C B In the triangle ABC , the angle ACB is 60 degrees , being measured ...
... length to the radius . Thus in the circle AEBD , if the arc AEB be an arc of 60 degrees , and the chord AB be drawn ; then D AB - CB - AC . fig . 33 . fig . 33 . E C B In the triangle ABC , the angle ACB is 60 degrees , being measured ...
Página 68
... XVII . To measure a given angle ABC fig . 57 . fig.57 . If the lines which include the angle , be not as long as the chord of 60 on your scale , produce them to that or a greater length , and between them so produced 68 PROBLEMS .
... XVII . To measure a given angle ABC fig . 57 . fig.57 . If the lines which include the angle , be not as long as the chord of 60 on your scale , produce them to that or a greater length , and between them so produced 68 PROBLEMS .
Página 73
... lines 1 . Hence it is easy to measure the length of any line knowing the scale by which it was laid down and on the contrary , to set off any given distance from any scale . * P 10 OF LOGARITHMS . IF to a series of numbers in PROBLEMS . 73.
... lines 1 . Hence it is easy to measure the length of any line knowing the scale by which it was laid down and on the contrary , to set off any given distance from any scale . * P 10 OF LOGARITHMS . IF to a series of numbers in PROBLEMS . 73.
Página 93
... lengths of those lines , calcu- lated to a given radius , for every degree , and minute of the quadrant ; by the help of which , and the fol- lowing Theorems any three parts of a triangle , except the three angles , being given , the ...
... lengths of those lines , calcu- lated to a given radius , for every degree , and minute of the quadrant ; by the help of which , and the fol- lowing Theorems any three parts of a triangle , except the three angles , being given , the ...
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A Treatise of Practical Surveying: Which is Demonstrated From Its First ... Robert Gibson Sin vista previa disponible - 2021 |
Términos y frases comunes
20 perches ABCD acres altitude Answer base bearing blank line centre chains and links chord circle circumferentor Co-secant co-sine Co-tang column compass contained cyphers decimal decimal fraction difference Dist 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 measure meridian distance multiplied needle number of degrees object off-sets opposite parallel parallelogram perpendicular piece of ground plane polygon Portmarnock PROB proportion protractor quotient radius right angles right line scale of equal SCHOLIUM secant second station sect semicircle side sights sine square root stationary distance stationary line sun's suppose survey taken tang tangent thence theo theodolite THEOREM thro triangle ABC trigonometry true amplitude true azimuth two-pole chains vane variation whence