Mechanical drawing. Elementary and advanced (1910)
Reid, John S. (John Simpson), 1856- · New York, J. Wiley & sons; [etc, etc.] · leaf 59
.—Describe a circle using the widest limit of the spiral as 44 MECHANICAL DRAWING. a radius. Divide the circle into any number of equal parts asA, B, Cj etc. Divide the radius into the same number of equalparts as I to 12. From the center with radius 12, 1 describean arc cutting the radial line B…
