The Civil engineer and architect's journal, scientific and railway gazette (1839)
London : [William Laxton] · leaf 245
tentee does not confine himself to the particular shape heredescribed as that may be varied. <i is a screw for raising and loweriugthe valve e a screw-nut,/, formed on the interior of the upper part of hecock-and ^corresponding nbs on the outer surface of the upper part of 26* 230 THE CIVIL…
Architecture · Civil engineering · Science
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