“The Secret Life of the Sewing Machine”, video still.
Watch the video below for an amazing explanation of the inner workings of the sewing machine. The video is an episode from an educational series presented by Tim Hunkin and Rex Garrod entitled “The Secret Life of Machines”.
If you are looking to buy a sewing machine, then you should always take the time to compare different sewing machine models before investing. The Sewing Machine Directory» is a helpful reference for finding which models have which features.