## 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 151

OS three or preserve The box is covered with a

OS three or preserve The box is covered with a

**glass**lid , in a brass rin , to prevent the needle being disturbed by wind rain , at the time of surveying : there is also a brass lid or cover , which is laid over the former to the**glass**... Page 152

The box is covered with a

The box is covered with a

**glass**lid , in a brass rim , to prevent the needle being disturbed by wind or rain , at the time of surveying : there is also a brass lid or cover , which is laid over the former to preserve the**glass**in ... Page 169

LET ET the

LET ET the

**glass**lid be taken off , and let the instrument be turned on one side , with the stem of the ball into the notch of the socket , so that the circle may be perpendicular to the plane of the horizon ; let the instrument be ... Page 177

А а A good refracting and reflecting telescope . A copying

А а A good refracting and reflecting telescope . A copying

**glass**LIST OF INSTRUMENTS . 177 Mensuration of LIST OF TABLES. Page 178

A copying

A copying

**glass**. For marine surveying ; A station pointer . An azimuth compase . One or two boat compasses . Besides these , a number of measuring rods , iron pins , or arrows , & c . will be found very convenient , and two or three ...### 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.