Blueprint reading; a practical manual of instruction in blueprint reading through the analysis of typical plates with reference to mechanical drawing conventions and methods, the laws of projection, etc (1919)
Fairfield, Howard Parker, 1858-, Kenison, Ervin, Waite, Edward B. (Edward Broughton), 1873-, American Technical Society · Chicago, American technical society · leaf 241
A B C D EF, 161 96 MECHANICAL DRAWING which is the base of the pyramid; and the Knes A D, B E, and CF,will represent the projections of its edges foreshortened as theywould appear in the plan. If this operation has been correctly per-formed, the opposite sides of the hexagon should be parallel… … S--M Fig. 130. Construction of Regular Hexagonal Pyramid projection of the pyramid may be easily constructed. Since it isdirectly under the plan, it must be projected vertically downward;therefore, from each of points A, B, C, D, drop perpendicularsto AD, the base line of the pyramid in the…
Mechanical drawing · Blueprinting
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