## The Theory and Practice of Surveying: Containing All the Instructions Requisite for the Skilful Practice of this Art |

### From inside the book

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Page 106

The first and third terms in the foregoing proortions , being of a like nature , and those of the and the proportions being

The first and third terms in the foregoing proortions , being of a like nature , and those of the and the proportions being

**direct**ones , it follows ; at if the third term be greater or less than the rst , the fourth term ... Page 137

... which is most usual ) as d is over A , while the leader puts down his peg at e : the eye can

... which is most usual ) as d is over A , while the leader puts down his peg at e : the eye can

**direct**the horizontal position near enough , but if greater aceuracy T were required , a quadrant applied to the chain , OF THE CHAIN . Page 145

Let ABCDEFG be a piece of ground to be surveyed : begioning at the point A , let one chain be laid in a

Let ABCDEFG be a piece of ground to be surveyed : begioning at the point A , let one chain be laid in a

**direct**line from A , towards G , where let a peg be left , as at c ; and again , the like distance from 4 in a**direct**line towards B ... Page 146

Being now arrived at B , let one chain be laid in a

Being now arrived at B , let one chain be laid in a

**direct**line from B towards 4 , where let a peg be left , as at f , and again , the like distance from B in a**direct**line towards C , where let also another peg be left , as at e ... Page 158

Set up your instrument at the angular point , and thence

Set up your instrument at the angular point , and thence

**direct**the sights along each leg of the angle , and note down their respective bearings , as before ; the difference of these bearings , if less than 180 , will be the quantity of ...### What people are saying - Write a review

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### Common terms and phrases

acres altitude angle Answer arch base bearing called centre chains chord circle Co-sec Co-sine Co-tang column compasses contained decimal degrees Dep Lat difference direct Dist distance divided divisions draw drawn east edge equal EXAMPLE extended feet figures fixed four fourth give given glass greater ground half hand height Hence Horizon inches laid land Lat Dep latitude length less logarithm manner marked measure meridian method minutes multiplied natural object observed opposite parallel perches perpendicular plane pole PROB proportion Quadrant quotient radius reduce remainder right angles right line root rule scale Secant sect side sights sine square station Sun's suppose survey taken Tang tangent theo third triangle true whole

### Popular passages

Page 38 - 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.

Page 25 - The circumference of every circle is supposed to be divided into 360 equal parts, called degrees ; and each degree into 60 equal parts, called minutes ; and each minute into 60 equal parts, called seconds ; and these into thirds, &c.

Page 199 - RULE. From half the sum of the three sides subtract each side severally.

Page 106 - C' (89) (90) (91) (92) (93) 112. In any plane triangle, the sum of any two sides is to their difference as the tangent of half the sum of the opposite angles is to the tangent of half their difference.

Page 27 - The VERSED SINE of an arc is that part of the diameter which is between the sine and the arc. Thus BA is the versed sine of the arc AG.