Mechanical drawing self-taught: comprising instructions in the selection and preparation of drawing instruments. Elementary instruction in practical mechanical drawing. Together with examples in simple geometry and elementary mechanism, including screw threads, gear wheels, mechanical motions, engines and boilers (1889)
ws in Figure 130, and the pro-cess for the pencil lines is as follows: iSidcVico EndView Fig. 130. With the bow-pencil set to half the required lengthand breadth of the square the arcs i, 2, 3 and 4, inFigure 131, are marked, and then the lines 5 and 6, THE ARRANGEMENT OF DIFFERENT VIEWS. 99… … Fig. 131. minate at the lines 5 and 6. The top and bottomlines of the edge view are merely prolongations oflines 5 and 6; hence the lines 9 and 10 are drawn therequisite distance apart for the thickness and to meetthe top and bottom lines. The lines are then inkedin, the pencil lines rubbed out,…
Mechanical drawing
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