The Civil engineer and architect's journal, scientific and railway gazette (1839)
London : [William Laxton] · leaf 34
front view, and Fig. 2 a side view of the instrument, on quarter theoriginal size, by the aid of whichany two angular pieces of fram-ing required to form a rightangle may be accurately put to-gether. A is the stock, composedof brass or gun-metal, to preventthe action of the atmosphere onit, so as… … Fixed mitre-bevels, when made with one leg only, frequently varyfrom the angle of 45°, or half a right angle, so that when two pieceswhich have been set out by such a tool are applied together, their in-correctness is increased two-fold; whereas, in Mr. Quarras tool, thatdifficulty is obviated by…
Architecture · Civil engineering · Science
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