WWI Renault 75 Chenilles self-propelled gun.
https://diqn32j8nouaz.cloudfront.net...1_fullsize.jpg
Previously:
https://www.homemadetools.net/forum/...719#post223422
https://www.homemadetools.net/forum/...577#post170335
https://www.homemadetools.net/forum/...647#post201541
https://www.homemadetools.net/forum/...385#post215299
https://www.homemadetools.net/forum/...938#post229845
