A practical treatise on ... land and engineering surveying, Τόμος 341863 |
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Σελίδα 30
... Problem 1 . To draw a line parallel to another , Plate 1 , Fig . 1 . Take the distance required in the compass , from two or three points on the line A B , describe arcs as a b c , draw a line touching those arcs will be the parallel ...
... Problem 1 . To draw a line parallel to another , Plate 1 , Fig . 1 . Take the distance required in the compass , from two or three points on the line A B , describe arcs as a b c , draw a line touching those arcs will be the parallel ...
Σελίδα 31
... Problem 3 . To draw lines parallel to the curve A B C , the centre being given , Fig . 3 . Bisect A B and B C , and draw the perpendiculars DE and FG ; then draw the lines A D , D G , GC ; with the radius AD describe the arcs AB and BC ...
... Problem 3 . To draw lines parallel to the curve A B C , the centre being given , Fig . 3 . Bisect A B and B C , and draw the perpendiculars DE and FG ; then draw the lines A D , D G , GC ; with the radius AD describe the arcs AB and BC ...
Σελίδα 32
... Problem 7 . Another method to let fall a perpendicular from a given point near the middle of a line , Fig . 7 . From A with any radius describe the arc bc ; with the same radius describe the arcs intersecting each other at d ; draw the ...
... Problem 7 . Another method to let fall a perpendicular from a given point near the middle of a line , Fig . 7 . From A with any radius describe the arc bc ; with the same radius describe the arcs intersecting each other at d ; draw the ...
Σελίδα 33
... Problem 11 . To divide a line or scale A B into eight equal parts , Fig . 11 . From A draw the line A b at pleasure , and from B draw the line B c parallel to Ab ; from A set off seven equal divisions , and the same number on the line B ...
... Problem 11 . To divide a line or scale A B into eight equal parts , Fig . 11 . From A draw the line A b at pleasure , and from B draw the line B c parallel to Ab ; from A set off seven equal divisions , and the same number on the line B ...
Σελίδα 34
... Problem 13 . The measure of an angle is an arc of a circle contained be- tween two lines which form that angle , as CB ; the angular point being the centre of the circle as at A , and is estimated by the number of degrees contained in ...
... Problem 13 . The measure of an angle is an arc of a circle contained be- tween two lines which form that angle , as CB ; the angular point being the centre of the circle as at A , and is estimated by the number of degrees contained in ...
Άλλες εκδόσεις - Προβολή όλων
A Practical Treatise on ... Land and Engineering Surveying Henry S. Merrett Δεν υπάρχει διαθέσιμη προεπισκόπηση - 2015 |
A Practical Treatise On ... Land and Engineering Surveying Henry S Merrett Δεν υπάρχει διαθέσιμη προεπισκόπηση - 2018 |
Συχνά εμφανιζόμενοι όροι και φράσεις
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
Δημοφιλή αποσπάσματα
Σελίδα 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.
Σελίδα 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.