Enormous vintage rolling mill flywheel at the at the Soho Foundry in Lancashire, England, c. 1900.
https://s3-us-west-1.amazonaws.com/h...l_fullsize.jpg
Previously:
https://www.homemadetools.net/forum/...793#post118983
https://www.homemadetools.net/forum/...554#post170247
https://www.homemadetools.net/forum/...496#post173797
https://www.homemadetools.net/forum/...442#post169822
https://www.homemadetools.net/forum/...755#post174929