The Civil engineer and architect's journal, scientific and railway gazette (1839)
London : [William Laxton] · leaf 383
Fig. 4. Fig. X … Should it be necessary to provide a compensation for any variationin the level of the water in the trough, this may be readily doneby suspending the trough from the short end of a rod or lever (towhich the adjusting-screw X, might be attached), and attachingthe other or long end by a connecting-rod…
Architecture · Civil engineering · Science
Internet Archive · Boston Library Consortium · Public Domain Mark 1.0. Free to use for anything.
