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

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Page 37

A line has

A line has

**length**but no breadth ; as AB . figures 1 and 2 . 4. The extremities of a line are points , as the extremities of the line AB are the points A and B. figures 1 and 2 . 5. A right line is , the shortest that can be drawn ... Page 56

... the square root of the difference of the squares of the hypothenuse and given side , will be the required side . THEO . XV . Pl . l . fig . 33 . In all circles the chord of 60 degrees is always equal in

... the square root of the difference of the squares of the hypothenuse and given side , will be the required side . THEO . XV . Pl . l . fig . 33 . In all circles the chord of 60 degrees is always equal in

**length**to the radius . Page 72

If the lines which include the angle , be not as long as the chord of 600 on your scale , produce * them to that or a greater

If the lines which include the angle , be not as long as the chord of 600 on your scale , produce * them to that or a greater

**length**, and between them so produced , with the chord of 60 ° from B , describe the arc e d ; which distance ... Page 80

Sectors are made of different sizes , but their

Sectors are made of different sizes , but their

**length**is usually denominated from the**length**of the legs when the sector is shut . Thus a sector of six inches , when the legs are close together , forms a rule of 12 inches when opened ... Page 85

Given the

Given the

**length**of the sine , tangent or secant of any degrees ; to find the**length**of the radius to that sine , tangent , or secant . Make the given**length**a transverse distance to its given degrees on its respective scale : then ...### 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.