Mechanical drawing. Elementary and advanced (1910)
Reid, John S. (John Simpson), 1856- · New York, J. Wiley & sons; [etc, etc.] · leaf 115
side of it the radius of the screw \\. Draw ABand 6D. Draw A6 the bottom of the screw, and on AB stepoff the pitch = f, beginning at the point A. On line 6D from the point 6 lay off a distance = half thepitch = f, because when the point of the thread has com- IOO MECHANICAL DRAWING. pleted half a…
