The Theory and Practice of Surveying: Containing All the Instructions Requisite for the Skilful Practice of this Art |
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Page 4
... 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 . Add 4.7832 3.2543 7.8251 6.03 2.857 and 3.251 together . Place them thus ...
... 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 . Add 4.7832 3.2543 7.8251 6.03 2.857 and 3.251 together . Place them thus ...
Page 5
... hand , sub- tract as in whole numbers , and place the decimal point in the difference exactly under the other two points . EXAMPLES . From 38.765 take 25.3741 25.3741 Difference - 13.3909 . From 2.4 take .8472 .8472 Diff . - 1.5528 From ...
... hand , sub- tract as in whole numbers , and place the decimal point in the difference exactly under the other two points . EXAMPLES . From 38.765 take 25.3741 25.3741 Difference - 13.3909 . From 2.4 take .8472 .8472 Diff . - 1.5528 From ...
Page 6
... hand towards the left , as there are in both the multiplicand and multiplier : but if there be not a sufficient number of places in the product , the defect may be supplied by pre- fixing ciphers thereto . For the denominator of the ...
... hand towards the left , as there are in both the multiplicand and multiplier : but if there be not a sufficient number of places in the product , the defect may be supplied by pre- fixing ciphers thereto . For the denominator of the ...
Page 13
... hand of the product , for a remain- der , as there are figures in the given decimal . Multiply this remainder by the number of the next inferior denomination , and point off a re- mainder , as before . Proceed in this manner through all ...
... hand of the product , for a remain- der , as there are figures in the given decimal . Multiply this remainder by the number of the next inferior denomination , and point off a re- mainder , as before . Proceed in this manner through all ...
Page 18
... hand in whole numbers , and toward the right hand in the Decimal places . - When the number of inte- gral places is odd , the first , or left hand period will consist of one figure only . Find the greatest square in the first period on ...
... hand in whole numbers , and toward the right hand in the Decimal places . - When the number of inte- gral places is odd , the first , or left hand period will consist of one figure only . Find the greatest square in the first period on ...
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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.