Practical Surveying: A Text-book for Students Preparing for Examinations Or for Survey-work in the Colonies |
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Results 1-5 of 17
Page 20
... rise 6 inches , strictly speaking we could only show them as the plan of a house by a length of 30 feet , whereas if we measure the string of the stair- case it will prove to be 33.54 feet long . Thus I do not think any more need be ...
... rise 6 inches , strictly speaking we could only show them as the plan of a house by a length of 30 feet , whereas if we measure the string of the stair- case it will prove to be 33.54 feet long . Thus I do not think any more need be ...
Page 35
... rise or fall in inches per yard on the disc , which is so compensated that its zero shows a perfectly horizontal plane . The observation may also be taken with the slot in the prism and the wire of the vane 1. The price of this ...
... rise or fall in inches per yard on the disc , which is so compensated that its zero shows a perfectly horizontal plane . The observation may also be taken with the slot in the prism and the wire of the vane 1. The price of this ...
Page 37
... rise or fall in inches per yard corresponding with the observed angle . The disc is balanced so that zero cor- responds with the horizon . When it is desired to use this instru- ment , as in Fig . 64 , by pressing the knob в the disc ...
... rise or fall in inches per yard corresponding with the observed angle . The disc is balanced so that zero cor- responds with the horizon . When it is desired to use this instru- ment , as in Fig . 64 , by pressing the knob в the disc ...
Page 138
... rise from в to G being about 90 feet . Commencing at a at the north - eastern end of the pro- perty for line 1 , it was found impossible to restrict the offsets to fifty links , as the point в was an important station ; consequently we ...
... rise from в to G being about 90 feet . Commencing at a at the north - eastern end of the pro- perty for line 1 , it was found impossible to restrict the offsets to fifty links , as the point в was an important station ; consequently we ...
Page 166
... rising generation , whose inquisitiveness and love of mischief are of the greatest impediment to his pro- gress , and test his patience and temper to the utmost . As to the Chain . For ordinary small scale plans the measure- ments may ...
... rising generation , whose inquisitiveness and love of mischief are of the greatest impediment to his pro- gress , and test his patience and temper to the utmost . As to the Chain . For ordinary small scale plans the measure- ments may ...
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Common terms and phrases
A B C accuracy accurately adjusted arrow axis back and fore back-sight beam compasses bench-mark boundaries centre chain chain-line check-lines chords clamped clinometer column commencement compass consequently Cosec cosine cross-wires curvature curve datum direction distance divided end of line equal feet fence field-book figures fixed fore sights ground hedge horizontal hypotenuse inches instrument intermediate intersection length level-book line A B line of collimation logarithm magnetic north mark means measured necessary observed offsets parallel plates pencil perpendicular plane plotted plumb-bob position post-and-rail fence quadrant radius reading reference right angles scale screw seen sextant side sine sketch slope square staff station straight line streets survey surveyor take the angle taken tangent tangential angle telescope theodolite tion traverse triangle trigonometry vernier vertical whilst Wimbledon Park wires zero
Popular passages
Page 86 - If two triangles have two sides of the one equal to two sides of the...
Page 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...
Page 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.
Page 61 - When you have proved that the three angles of every triangle are equal to two right angles...
Page 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.
Page 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.
Page 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.
Page 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.
Page 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.
Page 85 - A diameter of a circle is a straight line drawn through the centre, and terminated both ways by the circumference.