I finished my apprenticeship as a metal worker in the apprenticeship we work mainly with quare tubes and frame constructions also sheet metal fabrication and welding
It is funny, in Hungary for engineering courses the pass grade starts from 60%. It usually means you know everything inside out but you are allowed to make mistakes. As for large plotter plans / models, similar nonsense tasks were there to demonstrate you are able to get it done even when there were no such plotter in the county.