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 σελίδες |
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Σελίδα xii
... VERNIER . ...... ...... ...... 118 Construction of the Vernier - Its use- -Of the Theodo- lite - Its adjustments Lt. Colonel Everest's Pattern Theodolite - Description of the new Tripod Stand- Method of Observing with the Theodolite ...
... VERNIER . ...... ...... ...... 118 Construction of the Vernier - Its use- -Of the Theodo- lite - Its adjustments Lt. Colonel Everest's Pattern Theodolite - Description of the new Tripod Stand- Method of Observing with the Theodolite ...
Σελίδα xiii
... Vernier Scales -- On the Pro- tracting Scales - Construction - Marquois ' Scales- Plotting Scales - Remarks on Scales . IX . INSTRUMENTS FOR PLOTTING ... Of the Protractor - The Semicircular ditto - The Rec- tangular ditto - Application ...
... Vernier Scales -- On the Pro- tracting Scales - Construction - Marquois ' Scales- Plotting Scales - Remarks on Scales . IX . INSTRUMENTS FOR PLOTTING ... Of the Protractor - The Semicircular ditto - The Rec- tangular ditto - Application ...
Σελίδα 74
... vernier indicates zero , or whatever number of degrees it was first adjusted to , and the mark at C has then only to be placed in the line AD , and bisected by the intersection of the cross wires of the telescope . If it is impossible ...
... vernier indicates zero , or whatever number of degrees it was first adjusted to , and the mark at C has then only to be placed in the line AD , and bisected by the intersection of the cross wires of the telescope . If it is impossible ...
Σελίδα 113
... instrument is constructed on the same principle as the Surveying Compass , as to its needle and divided circle , but it possesses the advantages of a graduated limb and vernier Q scale , whereby the unsteadiness of the needle and the 113.
... instrument is constructed on the same principle as the Surveying Compass , as to its needle and divided circle , but it possesses the advantages of a graduated limb and vernier Q scale , whereby the unsteadiness of the needle and the 113.
Σελίδα 117
... operations till your work is finished , measuring such lines as are necessary , and determining as many as you can by inter- secting lines of direction , drawn from different stations . CHAPTER III . OF THE VERNIER . THE Vernier scale 117.
... operations till your work is finished , measuring such lines as are necessary , and determining as many as you can by inter- secting lines of direction , drawn from different stations . CHAPTER III . OF THE VERNIER . THE Vernier scale 117.
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A Manual of Surveying for India: Detailing the Mode of Operations on the ... R. Smyth Δεν υπάρχει διαθέσιμη προεπισκόπηση - 2018 |
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Συχνά εμφανιζόμενοι όροι και φράσεις
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
Δημοφιλή αποσπάσματα
Σελίδα 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.
Σελίδα 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.
Σελίδα 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.
Σελίδα 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.
Σελίδα 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.
Σελίδα 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...
Σελίδα 4 - A diameter of a circle is a straight line drawn through the centre, and terminated both ways by the circumference.
Σελίδα 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.
Σελίδα 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.
Σελίδα 5 - The circumference of every circle is supposed to be divided into 360 equal parts, called degrees...