Elementary text book for young surveyors and levellersSimpkin, Marshall & Company, 1856 - 185 sider |
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Resultat 1-5 av 30
Side ix
... obtained 9 To draw a Line parallel to a given line To divide a given line into any number of equal parts Having three sides given , to construct a Triangle To describe a Square upon a given line . To construct a Trapezoid To construct a ...
... obtained 9 To draw a Line parallel to a given line To divide a given line into any number of equal parts Having three sides given , to construct a Triangle To describe a Square upon a given line . To construct a Trapezoid To construct a ...
Side xiii
... obtain the Latitude and Departure geometrically , when the length and bearing of a line are given To find the bearing of a line by the Circumferentor CHAP . II . — To find the true bearing of a line , the magnetic bearing and the ...
... obtain the Latitude and Departure geometrically , when the length and bearing of a line are given To find the bearing of a line by the Circumferentor CHAP . II . — To find the true bearing of a line , the magnetic bearing and the ...
Side 9
... obtained , and not the vertex of the angle , included between them . Let A and B be the two sides such , that they cannot be produced . Take any points , A and B , and draw g the equal perpendiculars AD and BC ; through D and C draw DF ...
... obtained , and not the vertex of the angle , included between them . Let A and B be the two sides such , that they cannot be produced . Take any points , A and B , and draw g the equal perpendiculars AD and BC ; through D and C draw DF ...
Side 20
... bring square chains into acres , roods and perches . As almost all areas are obtained in square chains , by the multiplication of one side in chains , by another side in chains , this is perhaps the most practical case that can be.
... bring square chains into acres , roods and perches . As almost all areas are obtained in square chains , by the multiplication of one side in chains , by another side in chains , this is perhaps the most practical case that can be.
Side 31
... obtaining the proper measurement of the chain , by carefully complying with the directions above , and has put his first arrow down , he must return the cry of " down " to the driver , and , taking the chain up in his right hand , must ...
... obtaining the proper measurement of the chain , by carefully complying with the directions above , and has put his first arrow down , he must return the cry of " down " to the driver , and , taking the chain up in his right hand , must ...
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Elementary Text Book for Young Surveyors and Levellers with Copious Field ... Henry James Castle Ingen forhåndsvisning tilgjengelig - 2019 |
Elementary Text Book for Young Surveyors and Levellers With Copious Field ... Henry James Castle Ingen forhåndsvisning tilgjengelig - 2019 |
Vanlige uttrykk og setninger
2nd gate A. R. P. Answer angle of bearing angle of elevation base line bisect broad arrow centre chain surveying chains 50 links CHAP CHECK ANGLES check line circle circumferentor clamp corner correct cross customary determined diagonal DIAGRAM distance ditch divided draw equal Euclid EXAMPLE fence field book field notes flag gate post given angle given line given point half degrees hedge height horizontal inch interior angles intersection join Lancashire length line AC long scale mark meridian line motion needle number of degrees object observation offsets perpendicular placed plot pond protractor Required the true right angles right-angled triangle river road roods round screws similar triangles spirit level square chains square feet statute acres statute measure taken telescope theodolite top of bank trapezium triangle ABC true bearing true north vertical whole instrument width Wiltshire Wood
Populære avsnitt
Side 111 - All the interior angles of any rectilineal figure, together with four right angles, are equal to twice as many right angles as the figure has sides.
Side 160 - LEVELLING is the art of representing the inequalities of the earth's surface, and of determining the relative heights of any number of points above or below a line, equidistant, at every point, from the centre of the earth.
Side 17 - The square of the hypothenuse is equal to the sum of the squares of the other two sides ; as, 5033 402+302.
Side 8 - To describe a square upon a given straight line. Let AB be the given straight line : it is required to describe a square upon AB.
Side 102 - The existence of parallax is determined by moving the eye about, when looking through the telescope, observing whether the cross wires change their position, and are flittering and undefined. To correct this error, first adjust the eye-piece, by means of the moveable eye-piece tube, till you can perceive the cross wire clearly defined, and sharply marked against any white object.
Side 23 - C will be found 9, the square root on D. For the square root of 144 : Set 1 on C to 10 on D ; then against 144 on C will be found the square root 12 on D. 42. To find the area of a board or plank : The rule is, to multiply the length by the breadth, the product will be the area ; therefore, by the sliding rule, Set 12 on B against the breadth in inches on A ; then...
Side 16 - E, the adjacent angles CEA, AED; these angles are together equal to two right angles. (i. 13.) Again, because the straight line DE makes with AB...
Side 28 - To find the area of a circle. Rule — Multiply the square of the diameter by .7854; or the square of the radius by 3.1416; or the square of the circumference by .07958. Find the area of a piston 20 in. in diam. Answer— 20!
Side 8 - To draw a straight line at right angles to a given straight line, from a given point in the same. Let AB be the given straight line, and C the given point in it : it is required to draw from the point C a straight line at right angles to AB.
Side 23 - To find the Area of a Triangle when the Three Sides are given. Rule. — From half the sum of the three sides subtract each side separately. Multiply the half sum and the three remainders together, and extract the square root of the product.