c pleasantry than of indul-gent forbearance. A Treatise on the Principal Mathematical Drawing Instruments em-ployed by the Engineer, Architect, and Surveyor. By F. W. Simms,C. E. With numerous wood-cuts. London : John We ale, 1837. This is a very useful little work for the pupil on entering the… … The above engraving represents tliis instrument, which consists of a beam,A A, of any length required, generally made of well-seasoned mahogany;upon its face is inlaid throughout its whole length a slip of holly or box-wood,ii a, upon which are engraved the divisions or scale, either feet and…
Civil engineering · Architecture
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![An illustration from [Graphophone patents] (1878)](https://img.insideoutlibrary.com/img/200/ia-graphophonepaten10unit-819-552.webp)
