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 171
for the plates of this work, place a sheetA B G F, Fig. 38, on the drawing board 2 or 3 inches from the left-hand edge, called the working edge. If placed near the left-handedge, the T-square and triangles can be used with greater firmnessand the horizontal lines drawn with greater accuracy. In… … Fig. 38. Standard Lay-Out for Plates tacks may be used placing them as shown in Fig. 38; many draftsmenprefer one-ounce tacks as they offer less obstruction to the T-squareand triangles. To find the center of the sheet place the T-square so that itsupper edge coincides with the diagonal corners A…
Mechanical drawing · Blueprinting
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