The Theory and Practice of Surveying: Containing All the Instructions Requisite for the Skilful Practice of this Art |
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Page 9
... will be integers . Divide 2 by 3.1416 3.1416 ) 2.0000,0 ( 0.636618 + quotient . 1 8849 6 115040 94248 207920 188496 194240 188496 57440 31416 260240 251228 9012+ G In this example there are four decimal figures in the DECIMAL FRACTIONS . 9.
... will be integers . Divide 2 by 3.1416 3.1416 ) 2.0000,0 ( 0.636618 + quotient . 1 8849 6 115040 94248 207920 188496 194240 188496 57440 31416 260240 251228 9012+ G In this example there are four decimal figures in the DECIMAL FRACTIONS . 9.
Page 10
... four decimal figures in the divisor , and none in the dividend ; therefore , according to 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 ...
... four decimal figures in the divisor , and none in the dividend ; therefore , according to 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 ...
Page 40
... four equal parts , as BD , DA , AE , and , EB ; ( by def . 10. ) and so BD be- comes a quadrant or the fourth part of the peri- phery : therefore the radius DC is always the sine of a quadrant , or of the fourth part of the circle BD ...
... four equal parts , as BD , DA , AE , and , EB ; ( by def . 10. ) and so BD be- comes a quadrant or the fourth part of the peri- phery : therefore the radius DC is always the sine of a quadrant , or of the fourth part of the circle BD ...
Page 42
... four equal parts , as BD , D. , AE , and , EB ; ( by def . 10. ) and so BD be- comes a quadrant or the fourth part of the peri- phery : therefore the radius DC is always the sine of a quadrant , or of the fourth part of the Sines are ...
... four equal parts , as BD , D. , AE , and , EB ; ( by def . 10. ) and so BD be- comes a quadrant or the fourth part of the peri- phery : therefore the radius DC is always the sine of a quadrant , or of the fourth part of the Sines are ...
Page 44
... four sides are called polygons ; if the sides are all equal to each other , they are called regular polygons . They sometimes are named from the number of their sides , as a five - sided figure is called a penta- gon , one of six sides ...
... four sides are called polygons ; if the sides are all equal to each other , they are called regular polygons . They sometimes are named from the number of their sides , as a five - sided figure is called a penta- gon , one of six sides ...
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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.