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 249
heselines are shown as the points 1, 2, 3,at their true distance apart. Hence if the ellipse is revolvedaround its axis c^d, the distances 1-1; 2-2, 3-3 may be laid off onlines perpendicular to c^d, and the true size of the figure be shown.In Fig. 140 a plane cuts a cylinder obliquely. This is a… … Ellipse—Section from.aCylinder 170 MECHANICAL DRAWING 105 projected down on the cutting plane, at 1, 2, 3, etc. The lines drawnthrough these points perpendicular to l-7 are made equal in lengthto the corresponding distances 2-2, 3-3, etc., on the plan, because2-2 is the true width of curve at 2.…
Mechanical drawing · Blueprinting
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