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 σελίδες |
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Σελίδα 151
... four poles or perches , which consist of 100 links ; ( and this is the most natural division ) or by one of 50 links ... chains and their respective links will differ also . The English statute perch is 5 yards , the two - pole chain is 11 ...
... four poles or perches , which consist of 100 links ; ( and this is the most natural division ) or by one of 50 links ... chains and their respective links will differ also . The English statute perch is 5 yards , the two - pole chain is 11 ...
Σελίδα 152
... parts . For the more ready reckoning the links of a four 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 ...
... parts . For the more ready reckoning the links of a four 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 ...
Σελίδα 157
... chain more accu- rately ; for 80 four - pole , 160 two - pole chains , or 320 perches , make a mile as before : and if roads are mea- sured by a statute chain , it will give you the miles En glish , but if by a plantation chain , the OF THE ...
... chain more accu- rately ; for 80 four - pole , 160 two - pole chains , or 320 perches , make a mile as before : and if roads are mea- sured by a statute chain , it will give you the miles En glish , but if by a plantation chain , the OF THE ...
Σελίδα 158
... four - pole , and others by a two - pole chain ; and as ground for houses is measured by feet , we will shew how to reduce one to the toher , in the following problems . PROB . I. To reduce two - pole chains and links to four - pole ...
... four - pole , and others by a two - pole chain ; and as ground for houses is measured by feet , we will shew how to reduce one to the toher , in the following problems . PROB . I. To reduce two - pole chains and links to four - pole ...
Σελίδα 159
... four - pole chains and links , to perches and decimals of a perch . The links of a four - pole chain are decimal parts of it , each link being the hundreth part of a chain ; therefore if the chains and links be multiplied by 4 ( OF THE ...
... four - pole chains and links , to perches and decimals of a perch . The links of a four - pole chain are decimal parts of it , each link being the hundreth part of a chain ; therefore if the chains and links be multiplied by 4 ( OF THE ...
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A Treatise of Practical Surveying: Which is Demonstrated From Its First ... Robert Gibson Δεν υπάρχει διαθέσιμη προεπισκόπηση - 2021 |
Συχνά εμφανιζόμενοι όροι και φράσεις
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