Abstract: A system and device for enabling the control of time intervals between billets in rolling mills of blocks or billets and/or similar equipments that allow such control is implemented using sensor controlled electronic circuits.The control system relies on a signal indicator which indicates to a mill operator the proper moment at which a billet has to be introduced in the first stand of the rolling mill. By observing a preset time interval and a real time interval indicator between billets, an effective time interval control technique for establishing an ideal spacing between billets minimizes the spacing gap guaranteeing, among other benefits, a significative increase in rolling mill productivity.