A Treatise on Practical Surveying: Which is Demonstrated from Its First Principles, Wherein Every Thing that is Useful and Curious in that Art, is Fully Considered and ExplainedF. Lucas, Jun. and Joseph Cushing, 1816 - 472 páginas |
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Página ix
... grounds , when the waters were withdrawn . And this opinion is not entirely to be rejected , when we consider that Moses is said to have acquired this art when he resided at the Egyptian court . And Achilles Tatius in the beginning . of ...
... grounds , when the waters were withdrawn . And this opinion is not entirely to be rejected , when we consider that Moses is said to have acquired this art when he resided at the Egyptian court . And Achilles Tatius in the beginning . of ...
Página xi
... ; to which is ad- ded , a table of the sun's declination : how to find by what scale a map is laid down , having the map and area given : how to find the content of ground that is sur- veyed by a chain that is too long or too PREFACE . xi.
... ; to which is ad- ded , a table of the sun's declination : how to find by what scale a map is laid down , having the map and area given : how to find the content of ground that is sur- veyed by a chain that is too long or too PREFACE . xi.
Página 142
... ground that is not horizontal . fig . 87 . D C E H B From any two points , as G and A , whose distance GA , is measured , and therefore given ; let the angles HGD , BAD , BAC , and EAG , be taken ; because GH is parallel to EA ( by part ...
... ground that is not horizontal . fig . 87 . D C E H B From any two points , as G and A , whose distance GA , is measured , and therefore given ; let the angles HGD , BAD , BAC , and EAG , be taken ; because GH is parallel to EA ( by part ...
Página 145
... B - 3 ° 44 ' . 55 ° + 3 ° 44 ' 58 ° 44 ' - C . 55 ° -3 ° -44-51 ° 16 ' = B . 2. As S. C : AB :: S . A : BC , –277 . PROB , III . fig . 89 . C D Suppose ABC a triangular piece of ground , which by 19 OF DISTANCES . 145 2008 ...
... B - 3 ° 44 ' . 55 ° + 3 ° 44 ' 58 ° 44 ' - C . 55 ° -3 ° -44-51 ° 16 ' = B . 2. As S. C : AB :: S . A : BC , –277 . PROB , III . fig . 89 . C D Suppose ABC a triangular piece of ground , which by 19 OF DISTANCES . 145 2008 ...
Página 146
... ground , which by an old survey we find to be thus : AB 260 , AC 160 , BC 150 perches ; the mearing lines , AC and BC , are destroyed , or plowed down , and the line AB , only remaining . What angles must be set off at A and B , to run ...
... ground , which by an old survey we find to be thus : AB 260 , AC 160 , BC 150 perches ; the mearing lines , AC and BC , are destroyed , or plowed down , and the line AB , only remaining . What angles must be set off at A and B , to run ...
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A Treatise of Practical Surveying: Which is Demonstrated From Its First ... Robert Gibson Sin vista previa disponible - 2021 |
Términos y frases comunes
20 perches 50 Dist ABCD acres altitude annexed Answer base bearing bisect blank line centre chains and links chord circle circumferentor Co-secant Secant Co-sine Co-tang column contained cyphers decimal decimal fraction Dep Lat difference divided divisor draw east edge EXAMPLE feet field-book figures four-pole chains given angle half the sum height Hence hypothenuse inches instrument latitude length logarithm magnetical measure meridian distance multiplied needle number of degrees object off-sets parallel parallelogram perpendicular piece of ground plane Portmarnock PROB proportion protractor quotient radius right angles right line scale of equal SCHOLIUM sect semicircle side sights sine square root stationary distance sun's suppose survey taken tance Tang tangent thence theo theodolite THEOREM thro trapezium triangle ABC trigonometry true amplitude true azimuth two-pole chains vane variation whence