The Theory and Practice of Surveying: Containing All the Instructions Requisite for the Skilful Practice of this ArtJ.J. Harper, 1828 - 435 σελίδες |
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Σελίδα 4
... drawing instruments , used by sur- veyors . The fifth section contains Plane Trigonometry , right - angled and oblique , with a variety of rules and practical examples . The first section ( Part the Second ) gives an account of the ...
... drawing instruments , used by sur- veyors . The fifth section contains Plane Trigonometry , right - angled and oblique , with a variety of rules and practical examples . The first section ( Part the Second ) gives an account of the ...
Σελίδα 38
... drawn between any two points , as the line AB . fig . 1. but if it be not the shortest , it is then called a curve line , as AB . fig . 2 . 6. A superficies or surface is considered only as having length and breadth , without thickness ...
... drawn between any two points , as the line AB . fig . 1. but if it be not the shortest , it is then called a curve line , as AB . fig . 2 . 6. A superficies or surface is considered only as having length and breadth , without thickness ...
Σελίδα 39
... drawn from one end of an arc or arch ( that is , any part of the circumference of a circle ) to the other ; and is the measure of the arc . Thus the right line HG , is the measure of the arc HBG . fig . 8 . 18. The segment of a circle ...
... drawn from one end of an arc or arch ( that is , any part of the circumference of a circle ) to the other ; and is the measure of the arc . Thus the right line HG , is the measure of the arc HBG . fig . 8 . 18. The segment of a circle ...
Σελίδα 40
... drawn from the centre through the other end : thus BK is the tangent of the arc HB , fig . 8 . 23. And the line ... drawing them according to def . 30 , there results the self - same line ; thus HL is the sine of the arc HB , or of its ...
... drawn from the centre through the other end : thus BK is the tangent of the arc HB , fig . 8 . 23. And the line ... drawing them according to def . 30 , there results the self - same line ; thus HL is the sine of the arc HB , or of its ...
Σελίδα 41
... drawn from the vertex to the base perpendicularly : thus if the triangle ABC , be proposed , and BC be made its base , then if from the vertex A the perpendicular AD be drawn to BC , the line AD will be the height of the triangle ABC ...
... drawn from the vertex to the base perpendicularly : thus if the triangle ABC , be proposed , and BC be made its base , then if from the vertex A the perpendicular AD be drawn to BC , the line AD will be the height of the triangle ABC ...
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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