What is this long free arm machine called?
&quot;Feed-off-the-arm sewing machines – A feed off the arm sewing machine’s design is unusual in that its arm bridges a u-shaped bed. Such machines are ideal for seaming the inseams of pants and jeans as well as the sides, sleeves, and shoulders of shirts.&quot;
https://www.abcsewingmachine.com/blogs/features/62525253-the-different-types-of-industrial-sewing-machines-body-design