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 v
... Surveyor - Field Book CHAPTER II . ORDINARY SURVEYING . Reconnoitre - Sketch Map - Stations- Main Stations - Subsidiary Sta- tions - Testing the Chain - Test Gauge - Chain and Arrows : throwing out and doing up - Chain - men - Leader's ...
... Surveyor - Field Book CHAPTER II . ORDINARY SURVEYING . Reconnoitre - Sketch Map - Stations- Main Stations - Subsidiary Sta- tions - Testing the Chain - Test Gauge - Chain and Arrows : throwing out and doing up - Chain - men - Leader's ...
Seite viii
... Surveyor's Institution Examination - First a Chain Survey - What to avoid- Surveying a River - Don't spare the Use of the Theodolite- Corroboration of Observation - Hints on the Use of the Theo- dolite PAGE 146-154 CHAPTER VII ...
... Surveyor's Institution Examination - First a Chain Survey - What to avoid- Surveying a River - Don't spare the Use of the Theodolite- Corroboration of Observation - Hints on the Use of the Theo- dolite PAGE 146-154 CHAPTER VII ...
Seite 1
... surveyor ought to possess , and to notice the instruments which he is to employ in his operations . As a surveyor has perpetual occasion for calculation , it is necessary that he be familiar with the first four rules of Arithmetic , and ...
... surveyor ought to possess , and to notice the instruments which he is to employ in his operations . As a surveyor has perpetual occasion for calculation , it is necessary that he be familiar with the first four rules of Arithmetic , and ...
Seite 3
... surveyor should be pro- vided with a small staff or rod ( called an offset staff ) , 6 ft . 7.20 in . long , divided into 10 parts or links . This staff should be made of well - seasoned wood , painted white , with black rings to ...
... surveyor should be pro- vided with a small staff or rod ( called an offset staff ) , 6 ft . 7.20 in . long , divided into 10 parts or links . This staff should be made of well - seasoned wood , painted white , with black rings to ...
Seite 4
... surveyor. should. carry in his pocket a small tape , say 33 ft . long , to be used only under circumstances when abso- lutely necessary . These tapes are divided into 50 links , similar to the chain . Figs . 1 and 2.— Offset Staff . Poles ...
... surveyor. should. carry in his pocket a small tape , say 33 ft . long , to be used only under circumstances when abso- lutely necessary . These tapes are divided into 50 links , similar to the chain . Figs . 1 and 2.— Offset Staff . Poles ...
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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
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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.