Mechanical drawing. Elementary and advanced (1910)
Reid, John S. (John Simpson), 1856- · New York, J. Wiley & sons; [etc, etc.] · leaf 39
Fi^ 31I The Same : Another Method.—Let BC,the divided line, make any angle with BA, the line to be di- 24 MECHANICAL DRAWING. vided at B. Draw line CA joining the two ends of the lines.Draw lines from 5, 6, 7, 8, parallel to CA, dividing line ABin points 1, 2, 3, 4, proportional to BC Ffg.b* 32! To… … Fig. 32. Mgb* 33. To Construct an Equilateral Triangleof a Given Altitude, AB.—From both ends of AB drawlines perpendicular to it as CA and DB. From A with anyradius describe a semicircle on CA and with its radius cut offarcs 1, 2. Draw lines from A through 1, 2, and producethem until they cut the…
