The Theory and Practice of Surveying: Containing All the Instructions Requisite for the Skilful Practice of this Art |
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Page 4
... column , or vertical line , by themselves . Then , beginning at the right hand column of figures , add in the same manner as in whole num- bers , and put the decimal point , in the sum di- rectly beneath the other points . EXAMPLES ...
... column , or vertical line , by themselves . Then , beginning at the right hand column of figures , add in the same manner as in whole num- bers , and put the decimal point , in the sum di- rectly beneath the other points . EXAMPLES ...
Page 26
... by the odd numbers , and place the new quotients in a column by them- selves . By employing this process , the operation is considerably abbreviated . EXAMPLE 2 Required the Logarithm of the number 3 . 26 OF LOGARITHMS .
... by the odd numbers , and place the new quotients in a column by them- selves . By employing this process , the operation is considerably abbreviated . EXAMPLE 2 Required the Logarithm of the number 3 . 26 OF LOGARITHMS .
Page 145
... direct line towards B , where another peg is also to be left , as at d : let the distance from to c be measured , and placed in the field - book , in U the second column under the denomination of an- gles , OF THE CHAIN . 145.
... direct line towards B , where another peg is also to be left , as at d : let the distance from to c be measured , and placed in the field - book , in U the second column under the denomination of an- gles , OF THE CHAIN . 145.
Page 146
... column , under angles , in a line with station No. 2 ; and in the same line , under the title of distances in the third column , let the measure of the line BC , in chains and links , be inserted : after the same manner we may proceed ...
... column , under angles , in a line with station No. 2 ; and in the same line , under the title of distances in the third column , let the measure of the line BC , in chains and links , be inserted : after the same manner we may proceed ...
Page 149
... column of the radii : the measures of the respective lines of the mearing , viz AB , BC , CD , DE & c . being placed in the third column of distances , will complete the field- book . Thus , Remarks . INo . Radii . Distan . Ch . L.Ch. L ...
... column of the radii : the measures of the respective lines of the mearing , viz AB , BC , CD , DE & c . being placed in the third column of distances , will complete the field- book . Thus , Remarks . INo . Radii . Distan . Ch . L.Ch. L ...
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Common terms and phrases
acres altitude Answer arch azimuth base bearing blank line centre chains and links chord circle circumferentor Co-sec Co-tang column compasses contained decimal difference distance line divided divisions draw east Ecliptic edge feet field-book figures fore four-pole chains geom given number half the sum Horizon glass hypothenuse inches instrument Lat Dep Lat latitude length logarithm measure meridian distance multiplied natural co-sine natural sine needle Nonius number of degrees object observed off-sets opposite parallel parallelogram pegs perches perpendicular plane pole pole star Portmarnock PROB protractor Quadrant quotient radius right angles right line scale of equal SCHOLIUM screw Secant sect Sextant side sights square station stationary distance subtract Sun's survey taken Tang tangent theo theodolite trapezium triangle ABC trigonometry two-pole chains vane versed sine vulgar fraction whence
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 197 - 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.