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 309
rue Length of a Line by Revolv-ing Horizontal Projection … Fig. 121. True Length of a Line byRevolving Vertical Projection in Pig. 120, but by revolving the vertical projection. The methodis the same. Revolve A IV about the end Bp as a pivot until it isparallel t<> the ground line, and then project Axv up to A* on the 154 MECHANICAL DRAWING 89…
Mechanical drawing · Blueprinting
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