. The Architectural magazine. om the drawing-board, the principal points obtained by thisinstrument would save an immense deal of trouble. For thearchitect, therefore, as well as for the young student who has noidea of drawing perspective, this instrument is alike useful. Mr. Shires, the inventor of it (15. Little Chapel Street, Soho),is the professor of mathematics, and tutor to the Western Insti-tution, Leicester Square; and he teaches the use of the per-spective delineator, in one lesson, the expense of which is threeshillings, with an instrument included. The method of using it is as follo
. The Architectural magazine. om the drawing-board, the principal points obtained by thisinstrument would save an immense deal of trouble. For thearchitect, therefore, as well as for the young student who has noidea of drawing perspective, this instrument is alike useful. Mr. Shires, the inventor of it (15. Little Chapel Street, Soho),is the professor of mathematics, and tutor to the Western Insti-tution, Leicester Square; and he teaches the use of the per-spective delineator, in one lesson, the expense of which is threeshillings, with an instrument included. The method of using it is as follows. Let j9 (^o-. 208.) be anypoint, the perspective of which is required ; draw ab, to signify theedge of the picture; parallel to which draw the ground line i h ;r is the edge of the drawing-board. Make choice of any station,say c, and there fix the centre of the movable angle p ch\ nowplace cpy and also the T-squarep Z, both on the pointy, andopen the angular part c h, until the line / h comes into the 460 Geticral angle h; this done, slide the T-square I p to the position d q,so that the line a b shall come into the angle d; then the pointq so found [is the perspective of 7;; and in the same manner allother points may be found, which being joined with lines, willgive the perspective of any figure or solid, let its form be whatit may. The heights are obtained without sections, in equally assimple and as efficacious a manner ; but, in justice to Mr. Shires,I must here close the description of his useful contrivance, andrefer to him for the purpose of any further explanation. 24<. Manchester Street^ Manchester Square, July 17. 1835. MISCELLANEOUS INTELLIGENCE. Art. I. General Notices. Ventilation. — The following extract is from a work which ought to be inthe hands of every individual, but more especially in those of every Principles of Physiology aj)plied to the Preservation of Health, 3dedition. One of the evils of ignorance is, that we often s
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Keywords: ., bookcentury1800, bookdecad, booksubjectarchitecture, bookyear1834
