Spicula ferrea fictis late adhibentur in industria, sicut armorum cudendo;armorum potentia planta;armorum hydrau;volvens apparatum molendini;machinae petrolei, etc.
Anulus calces fictus ferro cingens late usus est in plantis caementa, fornacibus gyratoriis, fodienda, levatione, levi industria, industria chemica, translatione, constructione et aliis machinationibus et instrumentis mechanismi retardatus.