The Theory and Practice of Surveying: Containing All the Instructions Requisite for the Skilful Practice of this ArtEvert Duyckinck, 1814 - 508 σελίδες |
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Σελίδα
... Pole Star and Pole 177 Land 271 Sun's Declination 178 8. Maritime Surveying 281 Reduction Table 182 CONTENTS .
... Pole Star and Pole 177 Land 271 Sun's Declination 178 8. Maritime Surveying 281 Reduction Table 182 CONTENTS .
Σελίδα 12
... 800 640 1600 1600 Reduce 21 minutes 54 seconds to the decimal of a degree . Ans . .365 Reduce .056 of a pole to the decimal of an Acre . Ans . .00035 Reduce 13 cents to the decimal of an Eagle . 12 DECIMAL FRACTIONS .
... 800 640 1600 1600 Reduce 21 minutes 54 seconds to the decimal of a degree . Ans . .365 Reduce .056 of a pole to the decimal of an Acre . Ans . .00035 Reduce 13 cents to the decimal of an Eagle . 12 DECIMAL FRACTIONS .
Σελίδα 92
... poles of projected cir- cles in the stereographical projection of the sphere . The line of sines is principally used for the or- thographic projection of the sphere . The lines of latitudes and hours are used con- jointly , and serve ...
... poles of projected cir- cles in the stereographical projection of the sphere . The line of sines is principally used for the or- thographic projection of the sphere . The lines of latitudes and hours are used con- jointly , and serve ...
Σελίδα 134
... poles or perches , which consists of 100 links ( and this is the most natural division ) or by one of 50 links ... pole one is 22 yards ; hence the length of a link in a statute- chain is 7.92 inches . There are other perches used ...
... poles or perches , which consists of 100 links ( and this is the most natural division ) or by one of 50 links ... pole one is 22 yards ; hence the length of a link in a statute- chain is 7.92 inches . There are other perches used ...
Σελίδα 135
... pole chain , there is a large ring , or sometimes a round piece of brass , fixed at every 10 links ; and at 50 links , or in the middle , there are two large rings . In such chains as have a brass piece at every 10 links , there is the ...
... pole chain , there is a large ring , or sometimes a round piece of brass , fixed at every 10 links ; and at 50 links , or in the middle , there are two large rings . In such chains as have a brass piece at every 10 links , there is the ...
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acres altitude Answer arch base bearing blank line centre chains and links circle circle of latitude circumferentor Co-sec Co-tang column compasses contained decimal Dep Lat Dep difference Dist divided divisions draw east Ecliptic edge EXAMPLE feet field-book figures fore four-pole chains geometrical series given number half the sum Horizon glass hypothenuse inches instrument Lat Dep Lat latitude length logarithm measure meridian distance multiplied Natural Co-sines natural sine Nonius number of degrees object observed off-sets opposite parallelogram perches perpendicular plane pole pole star PROB proportion protractor Quadrant quotient radius right angles right line scale of equal SCHOLIUM screw Secant sect semicircle Sextant side sights square root station stationary distance subtracted survey taken Tang tangent theo theodolite trapezium triangle ABC trigonometry vane versed sine vulgar fraction