Triple expansion engine of the preserved steamship SS Shieldhall.
https://www.youtube.com/watch?v=x5cvRE4l0c0
Previously:
https://www.homemadetools.net/forum/...806#post148290
https://www.homemadetools.net/forum/...452#post146905
https://www.homemadetools.net/forum/...050#post134162
https://www.homemadetools.net/forum/...2209#post75951