quare. 8 INSTEUMEKTS AKD THEIR USES. Lines should be drawn with the upper edge only of theT-square. In case you wish to use the T-square as a guide for the knife incutting paper to size, do not use the upper edge as a guide, butturn the T-square over and use the bottom edge. For, unlessyou are very… … Place either edge of either triangle so as to coincide exactlywith the given line. Place the other triangle (or any straight edge) against one of the other edges of the jfirst triangle. Then,holding the second triangle, or straight edge, securely in thisposition with the left hand, move the first…
Mechanical drawing
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