DIAGRAM 73.—Lay the back against a straight line as shown, mark along
the top and add to the shoulder, E to D, ½ inch. From D as pivot cast a
short sweep, E to F.
Now lay the front against D, the shoulder point resting on the sweep;
open so far that the straight front edge of the forepart will be at a
right angle with the back line, and then draw line G H to the dot.
Apply the length, A to C, and from the circled dot at the corner sweep
the bottom.