The Theory and Practice of Surveying: Containing All the Instructions Requisite for the Skilful Practice of this Art |
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... scale of Maps -Of Distances 194 3. Mensuration of Areas 200 General Method 232 Pennsylvania Method 246 4. Of Off - sets 5. Method of surveying by Intersections 257 Mean Refraction Sun's Parallax Traverse Table 83 # 74 250 Dip of the ...
... scale of Maps -Of Distances 194 3. Mensuration of Areas 200 General Method 232 Pennsylvania Method 246 4. Of Off - sets 5. Method of surveying by Intersections 257 Mean Refraction Sun's Parallax Traverse Table 83 # 74 250 Dip of the ...
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... scale of Maps Mean Refraction Sun's Parallax Points of the Compass Traverse Table 83241 71 474 250 Dip of the Horizon 175 Dip for Dif . Dist of land Semi - diameter of the Sun Transit of Pole Star ibid 176 263 Difference of Altitude of ...
... scale of Maps Mean Refraction Sun's Parallax Points of the Compass Traverse Table 83241 71 474 250 Dip of the Horizon 175 Dip for Dif . Dist of land Semi - diameter of the Sun Transit of Pole Star ibid 176 263 Difference of Altitude of ...
Page 3
... DRE my times greater , by refaig de tres siphers to it and art ary numer a chess before an ineper , I the item tracton Las no effect in changing ther wh 73 SCALE OF NOTATION . Integers . 86 Decimals . DECIMAL FRANTICS.
... DRE my times greater , by refaig de tres siphers to it and art ary numer a chess before an ineper , I the item tracton Las no effect in changing ther wh 73 SCALE OF NOTATION . Integers . 86 Decimals . DECIMAL FRANTICS.
Page 4
... SCALE OF NOTATION . Integers . 86 Decimals . 8753 hundredth parts . thousandth parts . ten thousandth parts . hundred thousandth parts . Co millionth parts . ∞ tenth parts . ∞ tens . units . hundred thousands . ten thousands ...
... SCALE OF NOTATION . Integers . 86 Decimals . 8753 hundredth parts . thousandth parts . ten thousandth parts . hundred thousandth parts . Co millionth parts . ∞ tenth parts . ∞ tens . units . hundred thousands . ten thousands ...
Page 57
... scale are formed , is the chord of 60 degrees on the line of chords . THEO . XVI . PL . 1. fig . 34 . " If in two triangles ABC . abc , all the angles of one be each respectively equal to all the angles of the other , that is , A = a ...
... scale are formed , is the chord of 60 degrees on the line of chords . THEO . XVI . PL . 1. fig . 34 . " If in two triangles ABC . abc , all the angles of one be each respectively equal to all the angles of the other , that is , A = a ...
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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.