In drafting a jacket pattern, first draw a line (like O-G) on the edge
of your paper. Lay the back against the line at O and within 1½ inch of
the line at the waist, then trace along the centre seam from O to 5. Now
move it one-fourth inch away, this is for seam; then the same quantity is
allowed above at neck from 1 to 2 and from 2 to 3.
Along the arm-hole, from 3 to 4, trace close to the pattern. Measure next
the length wanted from O to 5 and 9 and draw a line over to 10. From 5 to
9 draw a straight line, and then curve outside of this, at point 8, about
one-half inch, as shown on Figure.
Make the width of waist any size desired, say 3 inches, which establishes
point 7, and from this point draw a line down to 10. This line should
be no further away from the first line at 10 than at 7, or the distance
from the line 9 to 10 should be the same as at waist, from 1½ to 7.
Now, starting at 4, slightly curve to 7 and go one-half inch outside of
straight line to 10.