The Civil engineer and architect's journal, scientific and railway gazette (1839)
London : [William Laxton] · leaf 135
also permanent, is oliliged to move according toits length, when it is nuide to turn lengthwise ontlie right or left side. When the position of the two axes BB, hasbeen so regulated, that their square points areinserted, and kejit into the ctoss-bars which areadjusted to the extremities of the log… … fe ,./
Architecture · Civil engineering · Science
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