The conundrum is this: To use an unknown square or an unknown circle to cut a garment, and produce the smaller sizes large enough and the larger ones small enough for all practical purposes.
Chips and Whetstones.
A sweep from the point of the angles, as at 80, will make a horizontal line when the pants are on and inflated with the body. No squaring from any one line will make it perfectly horizontal all around. The sweeps from the points of the angles will always be together when the pants are correctly sewed up and flat upon the table. Said sweeps will not fit together in all positions, if made from any other points, which proves their common center; and they will always be found reliable for the connection of the leg seams when the front is cut small and the back wide, and for squaring the bottom of pants.
Never change the angle of seven and a half degrees as a base.
Never try to find the perpendicular and horizontal lines on a pants, except for a person who always stands perfectly still; and as no such persons are found, said lines are therefore useless.
Allowance in the curve of the back of a pants cannot spread like the front, but will hang there like a bag, and may even cut the seat.