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 ... pole chain is 11 yards , and the four - pole one is 22 yards : hence the length of a link in a statute - chain is ...
... four poles or perches , which consist of 100 links ; ( and this is the most natural division ) or by one of 50 links ... pole chain is 11 yards , and the four - pole one is 22 yards : hence the length of a link in a statute - chain is ...
Σελίδα 152
... 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 as have ...
... 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 as have ...
Σελίδα 157
... 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 . 157.
... 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 . 157.
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 , how many two pole ones ? 2 16 37 Ch . L. 2. In 8 . 82 of four - pole chains , how many two- 2. 50 pole ones ? 17. 32 Answer . PROB . III . To reduce four - pole chains and links , to perches and decimals of a perch ...
... four - pole chains , how many two pole ones ? 2 16 37 Ch . L. 2. In 8 . 82 of four - pole chains , how many two- 2. 50 pole ones ? 17. 32 Answer . PROB . III . To reduce four - pole chains and links , to perches and decimals of a perch ...
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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