Practical Surveying: A Text-book for Students Preparing for Examinations Or for Survey-work in the ColoniesC. Lockwood and Son, 1889 - 272 Seiten |
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Seite vi
... Screws - Ball and Socket Arrangement - The Limb or Lower Plate - The Upper or Vernier Plate - Clamps - Troughton's Clamp and Tangent Arrangement- Levelling Plates - Vertical Arc - Compass - Telescope - The Dia- phragm - The Vernier ...
... Screws - Ball and Socket Arrangement - The Limb or Lower Plate - The Upper or Vernier Plate - Clamps - Troughton's Clamp and Tangent Arrangement- Levelling Plates - Vertical Arc - Compass - Telescope - The Dia- phragm - The Vernier ...
Seite xiv
... SCREWS PERPENDICULAR PLANE TABLE PLUS AND MINUS SIGNS POST AND RAIL FENCE PRICKER PRISMATIC COMPASS PROPORTIONAL COMPASS PROTRACTORS Sketch 88 295 236 86 , 87 88 45 46 Sketch 85 114 , 115 , 116 63 , 64 159 , 160 , 161 , 162 , 163 101 ...
... SCREWS PERPENDICULAR PLANE TABLE PLUS AND MINUS SIGNS POST AND RAIL FENCE PRICKER PRISMATIC COMPASS PROPORTIONAL COMPASS PROTRACTORS Sketch 88 295 236 86 , 87 88 45 46 Sketch 85 114 , 115 , 116 63 , 64 159 , 160 , 161 , 162 , 163 101 ...
Seite xv
... . TAKING AN ANGLE TANGENT SCREWS TELEMETER . 198 91 , 92 117 TELEMETER , HOW TO USE Iт 118 , 119 , 120 , 121 , 122 TESTING A CHAIN Sketch 154 48 , 49 65 65 , 66 , 68 9 Description of Illustration . TELESCOPE TEMPLATE THEODOLITE , " EVEREST.
... . TAKING AN ANGLE TANGENT SCREWS TELEMETER . 198 91 , 92 117 TELEMETER , HOW TO USE Iт 118 , 119 , 120 , 121 , 122 TESTING A CHAIN Sketch 154 48 , 49 65 65 , 66 , 68 9 Description of Illustration . TELESCOPE TEMPLATE THEODOLITE , " EVEREST.
Seite 30
... screw a . A ring on the lower member is divided into degrees and subdivisions , and , with a vernier attached to the upper cylinder , it is possible - with the greatest care - to obtain the angle of one or more points , but this can ...
... screw a . A ring on the lower member is divided into degrees and subdivisions , and , with a vernier attached to the upper cylinder , it is possible - with the greatest care - to obtain the angle of one or more points , but this can ...
Seite 35
... screw may be arranged for observation either as com- pass or clinometer . In the latter case the box must be fixed perfectly vertical , so as to allow the clinometer end , which is weighted , to swing freely . The tele- scope B is now ...
... screw may be arranged for observation either as com- pass or clinometer . In the latter case the box must be fixed perfectly vertical , so as to allow the clinometer end , which is weighted , to swing freely . The tele- scope B is now ...
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accuracy accurately adjusted arrow axis back and fore back-sight beam compasses bench-mark boundaries centre chain chain-line chords clamped clinometer colour commencement compass consequently Cosec cosine cross-staff cross-wires curve direction distance ditch divided DUMPY LEVEL end of line equal feet fence field-book figures fixed fore sight ground hedge hypotenuse illustration inch instrument intermediate intersection length line A B line of collimation logarithm mark means measured necessary observed offsets parallel plate pencil perpendicular plane plot plumb-bob position post-and-rail fence quadrant radius ratio reading reference represent right angles scale screw secant seen sextant shown side sine sketch square staff station straight line survey surveyor take the angle tangent tangential angle telescope theodolite tion traverse triangle trigonometry upper vernier whilst Wimbledon Park wires zero دو دو
Beliebte Passagen
Seite 86 - If two triangles have two sides of the one equal to two sides of the...
Seite 89 - IF a straight line fall upon two parallel straight lines, it makes the alternate angles equal to one another; and the exterior angle equal to the interior and opposite upon...
Seite 85 - When a straight line standing on another straight line makes the adjacent angles equal to one another, each of the angles is called a right angle ; and the straight line which stands on the other is called a perpendicular to it.
Seite 61 - When you have proved that the three angles of every triangle are equal to two right angles...
Seite 85 - A circle is a plane figure contained by one line, which is called the circumference, and is such, that all straight lines drawn from a certain point within the figure to the circumference are equal to one another : 16.
Seite 92 - In any right-angled triangle, the square which is described on the side subtending the right angle is equal to the sum of the squares described on the sides which contain the right angle.
Seite 116 - In any plane triangle, as the sum of the sides about the vertical angle is to their difference, so is the tangent of half the sum of the angles at the base to the tangent of half their difference.
Seite 85 - A plane rectilineal angle is the inclination of two straight lines to one another, which meet together, but are not in the same straight line.
Seite 127 - As the sum of the two given sides Is to their difference, So is the tangent of half the sum of their opposite angles To the tangent of half the difference of the same angles.
Seite 85 - A diameter of a circle is a straight line drawn through the centre, and terminated both ways by the circumference.