Sullivan, Christine [Gordon]. [from old catalog] · New York, Cincinnati [etc.] American book company · leaf 66
Fig. 99. WHEELS. 6i Exercise 5.— To produce a given straight line beyond a given ob-stacle. Let AB (Fig. loo) be the straight line, and X be the obstacle. … Fig. too. Continue a straight line beyond the obstacle. From A and B^ or anyother points in this line, draw two perpendiculars of equal length, AMand ^*S(let them fall beyond the obstacle). Draw MS^ and produceit indefinitely. At any two points beyond the obstacle locate H andOy and from these draw…
Mechanical drawing
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