Mettler Thread. Amann Group Mettler makes the very popular Mettler thread brand. Enjoy quality Mettler thread, that has been around for more than 160 years. This thread is ideal for sewing and quilting. We carry "Metrosene Polyester Thread", "Cotton Machine Quilting Thread" and "Silk Finish Cotton Thread". These threads come in a rainbow of colors and sizes for your sewing and quilting needs.