Most machines no longer come with a mechanical pressure adjuster (round silver thing on top of your grans singer) why? Most people don’t need it for crafty sewing and it makes a machine much cheaper if you get rid of it. 20 years ago you couldn’t get a machine without one but that’s just how the industry has changed. If you dress make or want to make curtains and want to do if properly without spending lots on a machine that has an automatic pressure adjuster then we have made you a list of machines that you should be looking at. Essentially a pressure adjuster let’s you control the fabric yourself to feed evenly without stretching or puckering.