## 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 4

Write the numbers under each other according to the value or denomination of their places ; which position will bring all the Decimal points into a column , or vertical

Write the numbers under each other according to the value or denomination of their places ; which position will bring all the Decimal points into a column , or vertical

**line**, by themselves . Then , beginning at the**right**hand column of ... Page 37

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

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 38

4. the inclination of the

4. the inclination of the

**line**AB to the**line**BC meeting each other in the point B , or the opening of the two**lines**BA and ... When the**lines**that form the angle are**right**ones , it is then called a**right**- lined angle , as ÅBC , fig . Page 39

The describing line CB . ( fig . 8. ) is called the semidiameter or radius , so is any line from the centre to the circumference : whence all radii of the same or of equal circles are equal . 15. The diameter of a circle is a

The describing line CB . ( fig . 8. ) is called the semidiameter or radius , so is any line from the centre to the circumference : whence all radii of the same or of equal circles are equal . 15. The diameter of a circle is a

**right line**... Page 40

The

The

**right**sine of an arc , is a perpendicular**line**let fall from one end thereof , to a diameter drawn to the other end : thus HL is the**right**sive of the arc HB . The sines on the same diameter increase till they come to the centre ...### 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.