The Theory and Practice of Surveying: Containing All the Instructions Requisite for the Skilful Practice of this Art |
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Page 5
... rule of addition ; then , beginning at the right 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 ...
... rule of addition ; then , beginning at the right 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 ...
Page 10
... rule , four ciphers are annexed to the dividend , which in this condition , is yet less than the divisor . A cipher must then be put in the quotient , in the place of integers , and other ciphers annexed to the dividend ; and the ...
... rule , four ciphers are annexed to the dividend , which in this condition , is yet less than the divisor . A cipher must then be put in the quotient , in the place of integers , and other ciphers annexed to the dividend ; and the ...
Page 11
... RULE II . To reduce Quantities of the same , or of different denominations to Decimal Fractions of higher de- nominations . If the given quantity consist of one denomina- tion only , write it as the numerator of a vulgar fraction ; then ...
... RULE II . To reduce Quantities of the same , or of different denominations to Decimal Fractions of higher de- nominations . If the given quantity consist of one denomina- tion only , write it as the numerator of a vulgar fraction ; then ...
Page 13
... RULE III . To find the value of Decimal Fractions in terms of the lower denominations . Multiply the given decimal by the number of the next lower denomination , which makes an integer of the present , and point off as many pla- ces at ...
... RULE III . To find the value of Decimal Fractions in terms of the lower denominations . Multiply the given decimal by the number of the next lower denomination , which makes an integer of the present , and point off as many pla- ces at ...
Page 18
... RULE For extracting the Square Root . Separate the given number into periods of two figures , by putting a point over the place of units , another over the place of hundreds , and so on , over every second figure , both toward the left ...
... RULE For extracting the Square Root . Separate the given number into periods of two figures , by putting a point over the place of units , another over the place of hundreds , and so on , over every second figure , both toward the left ...
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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.