Spanton, J. Humphrey (John Humphrey) · London, Macmillan and Co., Limited; New York, The Macmillan Company · leaf 189
level of &), draw an arc tillit meets a projector drawn fromd in the points dd. Proceed inthe same manner with the otherpoints, and draw a fair curvethrough them. Fig. 306. To construct the sectional area. Draw the line DE in anyconvenient position, parallel to DE, and draw hnes from eachof the… … 176 GEOMETRICAL DRAWING AND DESIGN. 225. To project a section through a right vertical cone ; the cuttingplane to be parallel to the side of the cone and perpendicularto the V.P. Fig. 307. This section is a parabola. Let DE be the elevation of the section. Divide it into any number of parts—it is…
Geometrical drawing · Design · Drawing
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