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 305
Fig 110. Projectioi under with Circular Hole Fig. 111. Projections of Frustaof Square Pyramid Clllar hole is shown by heavy dotted lines. Holes are always rep-resented in this way. The plan />, shows the shape of the top ofthe nut, and also the shape of the hole. 150 MECHANICAL DRAWING 85 ^ N S…
Mechanical drawing · Blueprinting
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