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 ix
... columns , and by that means delivered to posterity . It is a matter of some wonder , that though survey- ing appears to have been the first , or at least one of the ' first of the mathematical sciences , that the rest have met with much ...
... columns , and by that means delivered to posterity . It is a matter of some wonder , that though survey- ing appears to have been the first , or at least one of the ' first of the mathematical sciences , that the rest have met with much ...
Σελίδα 79
... column marked at the top N , is that in which you must find your number ; in the same line with which in the adjacent column , is the logarithm of that number . EXAMPLE . Required , the logarithm of 365 . Answer , 2,56229 . And though ...
... column marked at the top N , is that in which you must find your number ; in the same line with which in the adjacent column , is the logarithm of that number . EXAMPLE . Required , the logarithm of 365 . Answer , 2,56229 . And though ...
Σελίδα 89
... columns , the first and last of which are minutes , and the intermediate ones contain the sines , tangents , and secants , the upper and lower columns contain de grees , the column of the minutes on the left hand of each page , answers ...
... columns , the first and last of which are minutes , and the intermediate ones contain the sines , tangents , and secants , the upper and lower columns contain de grees , the column of the minutes on the left hand of each page , answers ...
Σελίδα 90
... column ; and the sines , tangents , and secants belonging to those degrees and minutes , are in the columns marked at the top with the words sine , tangent , and secant ; the column of minutes on the right hand of each page , an- swers ...
... column ; and the sines , tangents , and secants belonging to those degrees and minutes , are in the columns marked at the top with the words sine , tangent , and secant ; the column of minutes on the right hand of each page , an- swers ...
Σελίδα 91
... column for 30 minutes ; then in the column marked tangent at its bottom , and on the same line with the 30 minutes , in the side column , we find 10.14673 , which is the log - tangent required . The reverse of this , viz . The logarithm ...
... column for 30 minutes ; then in the column marked tangent at its bottom , and on the same line with the 30 minutes , in the side column , we find 10.14673 , which is the log - tangent required . The reverse of this , viz . The logarithm ...
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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