Selection of machines
Sew 2 shoulder darts in back panel. Sew center back seam with or without vent. Sew back panel seams.
Result
Single needle lockstitch machine with bottom feed and needle feed for the universal use
Lockstitch machine with bottom feed, differential foot top feed for preassembly and assembly seams
Single-needle lockstitch machine with differential foot top feed, fullness control and separately driven edge trimmer
