1952 subway tunnel cleaning machine.
Fullsize image: https://diqn32j8nouaz.cloudfront.net...e_fullsize.jpg
https://diqn32j8nouaz.cloudfront.net...ng_machine.jpg
Previously:
https://www.homemadetools.net/forum/...888#post137369
https://www.homemadetools.net/forum/...765#post133147
https://www.homemadetools.net/forum/...545#post128137
https://www.homemadetools.net/forum/...031#post120283
https://www.homemadetools.net/forum/...7790#post86258
