A Manual of Surveying for India, Detailing the Mode of Operations on the Revenue Surveys in Bengal and the North-western ProvincesW. Thacker, 1851 - 718 páginas |
Dentro del libro
Resultados 1-5 de 37
Página 70
... close ( as it is termed ) with proper exactness . PROB . XI . To change a triangle into another of equal extent , but different height . A D D A Let ABC be the given triangle , D a point at the given height . CASE 1. Where the point D ...
... close ( as it is termed ) with proper exactness . PROB . XI . To change a triangle into another of equal extent , but different height . A D D A Let ABC be the given triangle , D a point at the given height . CASE 1. Where the point D ...
Página 100
... close by the boundary and weigh it in grains and decimals of a grain , as before . Then say , as the first weight , is to the first area , so is the second weight to the second area , which gives the area of the map in squares , and ...
... close by the boundary and weigh it in grains and decimals of a grain , as before . Then say , as the first weight , is to the first area , so is the second weight to the second area , which gives the area of the map in squares , and ...
Página 115
... close thereto ; the frame is therefore so contrived , that it may be taken off and put on at pleasure , either side upwards . Each side of the frame is graduated ; one side is usually divided into scales of equal parts , for drawing ...
... close thereto ; the frame is therefore so contrived , that it may be taken off and put on at pleasure , either side upwards . Each side of the frame is graduated ; one side is usually divided into scales of equal parts , for drawing ...
Página 166
... close down upon the horizontal bar , b , b , the spirit level , 1 , 7 , is permanently fixed to the top of the telescope , and does not , therefore , admit of ad- justment , and the compass box , C , is supported over the level by four ...
... close down upon the horizontal bar , b , b , the spirit level , 1 , 7 , is permanently fixed to the top of the telescope , and does not , therefore , admit of ad- justment , and the compass box , C , is supported over the level by four ...
Página 192
... close up to the joint , is held at the other end by a screw . A groove is formed in the shank , which receives the spring when screwed up tight ; and , by turning the screw backwards , the steel point may be gradually allow- ed to be ...
... close up to the joint , is held at the other end by a screw . A groove is formed in the shank , which receives the spring when screwed up tight ; and , by turning the screw backwards , the steel point may be gradually allow- ed to be ...
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Otras ediciones - Ver todas
A Manual of Surveying for India: Detailing the Mode of Operations on the ... R. Smyth Sin vista previa disponible - 2018 |
A Manual of Surveying for India: Detailing the Mode of Operations on the ... R. Smyth Sin vista previa disponible - 2017 |
A Manual of Surveying for India, Detailing the Mode of Operations on the ... Ralph Smyth Sin vista previa disponible - 2015 |
Términos y frases comunes
accuracy adjustment altitude angular axis azimuth base Beam Compass bisect boundary centre chord circle collimation compasses computation construction correct deducted degrees describe difference distance divided Draw the line drawn edge error feet Field-book figure fixed given line ground half height horizontal inches instrument intersection latitude length limb Logarithm longitude main circuit mark measure meridian method natural number object observed angle obtain offsets opposite parallax parallel parallelogram perpendicular plane plate polygon position PROB produced protractor radius Ray Trace reading rhombus right angles right line scale of equal screw segment sextant side Sine square station line straight line subtract Survey Surveyor taken talc tangent telescope Theo Theodolite triangle ABC Trigono Trigonometrical Trigonometrical Survey tube vernier vernier scale vertical village wires zero وو
Pasajes populares
Página 7 - Things which are equal to the same thing are equal to one another. 2. If equals be added to equals the wholes are equal. 3. If equals be taken from equals the remainders are equal. 4. If equals be added to unequals the wholes are unequal. 5. If equals be taken from unequals the remainders are unequal. 6. Things which are double of the same are equal to one another.
Página 2 - But when a straight line standing upon another straight line makes the adjacent angles equal to one another, each of the angles is a right angle : (Ю.
Página 14 - The angle in a semicircle is a right angle ; the angle in a segment greater than a semicircle is less than a right angle ; and the angle in a segment less than a semicircle is greater than a right angle.
Página 12 - F, which is the common vertex of the triangles: that is », together with four right angles. Therefore all the angles of the figure, together with four right angles are equal to twice as many right angles as the figure has sides.
Página 240 - Upon the same base, and on the same side of it, there cannot be two triangles that have their sides which are terminated in one extremity of the base equal to one another, and likewise those which are terminated in the other extremity.
Página 2 - When several angles are at one point B, any one of them is expressed by three letters, of which the letter that is at the vertex of the angle, that is, at the point in which the straight lines that contain the angle meet one another, is put between the other two letters, and one of these two...
Página 4 - A diameter of a circle is a straight line drawn through the centre, and terminated both ways by the circumference.
Página 273 - 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.
Página 149 - ... to make the objects appear on the other wire ; if the contact still remains perfect, the axis of the telescope is in proper adjustment ; if not, it must be altered by moving the two screws which fasten, to the up-and-down piece, the collar into which the telescope screws. This adjustment is not very liable to be deranged.
Página 5 - The circumference of every circle is supposed to be divided into 360 equal parts, called degrees...