Mechanical drawing. Elementary and advanced (1910)
Reid, John S. (John Simpson), 1856- · New York, J. Wiley & sons; [etc, etc.] · leaf 234
aying out the development, Fig. 290, draw from the point7 a line perpendicular to the line 7^7, and at a convenient distancefrom the latter draw the center line 1-1 and on the line f-i inboth directions, lay off the six divisions found on the semicircle.Through these divisions draw lines parallel…
