Industrial controllers

Three solid industrial control boxes of painted sheet metal with rounded edges, with handles on the sides and a large cast-iron control wheel and marked scale on the top; heavy service patina, rust in places. Typically older electromechanical controllers/controllers (e.g. for load, motor or lighting control) used in workshops and factories. Date: ca 1950s-1970s. A suitable prop for factories, electrical substations, test rooms, design booths or technical interiors of the socialist era.