A practical treatise on ... land and engineering surveying, 第 34 巻1863 |
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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
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102 ページ - 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.
66 ページ - ... 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.