A practical treatise on ... land and engineering surveying, Volume 341863 |
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Page vi
... cross levels . . 166 Levelling through a town . 167 Staking out a line 168 Levels above and below datum 171 Part of a line of levels , and the mode of keeping the book 172 Check levels . 173 Level book , No. 1 • ib . 174 " " 3 ib ...
... cross levels . . 166 Levelling through a town . 167 Staking out a line 168 Levels above and below datum 171 Part of a line of levels , and the mode of keeping the book 172 Check levels . 173 Level book , No. 1 • ib . 174 " " 3 ib ...
Page 52
... cross with a dovetailed groove at right angles , in which two small pieces are made to run easily up and down each way , to which is a beam ( similar to a beam compass ) with sliding sockets , one for the pen , pencil , or point , the ...
... cross with a dovetailed groove at right angles , in which two small pieces are made to run easily up and down each way , to which is a beam ( similar to a beam compass ) with sliding sockets , one for the pen , pencil , or point , the ...
Page 83
... cross it , and the number entered in the field - book ; and against that number on the chain , in the offset column , a mark denoting that a line is in- tended to go from or through that line , and in the direction shown , as thus O ...
... cross it , and the number entered in the field - book ; and against that number on the chain , in the offset column , a mark denoting that a line is in- tended to go from or through that line , and in the direction shown , as thus O ...
Page 107
... cross- ing part of the field from c to b ; the angle taken at b deter- mines line 6 , therefore line 5 is a proof , and the survey is finished ; by extending 6 and 7 two angles less are required . Supposing the lines 3 ) , and ( 6 ) ...
... cross- ing part of the field from c to b ; the angle taken at b deter- mines line 6 , therefore line 5 is a proof , and the survey is finished ; by extending 6 and 7 two angles less are required . Supposing the lines 3 ) , and ( 6 ) ...
Page 110
... cross the field next the road , otherwise the angle would be use- less , as lines 3 , 4 , and 5 would be proof lines . The cot- ( 5 ) tage - garden in the one case must be taken up by a small tra- pezium ; in the latter , it can be ...
... cross the field next the road , otherwise the angle would be use- less , as lines 3 , 4 , and 5 would be proof lines . The cot- ( 5 ) tage - garden in the one case must be taken up by a small tra- pezium ; in the latter , it can be ...
Autres éditions - Tout afficher
A Practical Treatise on ... Land and Engineering Surveying Henry S. Merrett Aucun aperçu disponible - 2015 |
A Practical Treatise On ... Land and Engineering Surveying Henry S Merrett Aucun aperçu disponible - 2018 |
Expressions et termes fréquents
A B C acres adjustment base line bubble calculated centre chain lines chord circle circumference circumferentor collimation column compass correct cross sections cube yards curve datum line described diameter Diff difference Ditto divided divisions draw the line equal fence field-book fifth column figure find the area fixed flag fore sights frustrum given ground height horizontal inches and decimals inclosure instrument intersecting length line A B logarithm manner mark measure method minutes multiply needle object Offsets in inches parallel plate parallelogram pencil perpendicular plotted poles Problem protractor quantity quotient Radius in chains right angles roods Rule scale secant sector segment sextant side A B sine slopes spirit level square links staff station straight edge subtract surface survey surveyor TABLE take the angle tangent points telescope theodolite tie line tracing paper transverse distance trapezium triangle vernier vertical whole
Fréquemment cités
Page 102 - All the interior angles of any rectilineal figure, together with four right angles, are equal to twice as many right angles as the figure has sides.
Page 66 - ... the rail; multiply the length by the breadth and the product by the height; then divide the product by two, and you have the number of bushels of shelled corn in the crib.