The Civil engineer and architect's journal, scientific and railway gazette (1839)
London : [William Laxton] · leaf 260
18 48.] THE CIVIL ENGINEER AND ARCHITECTS JOURNAL, 231 the arms p,/, g, h ; and by turninc; the instrument or the paperround, tlie other half may be drawn with equal facility. … By constructina: the instrument so that the arms could be ad-justed to any radius at pleasure, we sliouhl tlien be enabled torepresent a circle of any diameter within its ranjje. Ellipses, also,could be represented in this kind of perspective, by its means. Ifit were required to show the…
Architecture · Civil engineering · Science
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