Manufacturing process for jacket of any size or style using heights with constant ratios

摘要

The jacket is made from a folded piece of fabric (OAQD). The piece of fabric is marked with lines to show the heights (AB) between the shoulder and the base of the armhole (Y3) and between its base and centre. The heights are marked between the base of the armhole and the start of the curve of the jacket (BC) and between this point and the bottom (CD). The values of these heights are in a constant ratio. The armhole oval (Y3) marks a vertical axis (XX) which divides the fabric into two identical parts. The curve of the armhole is fixed by an added piece (P1).