Abstract: An electro-magnetic thickness measuring probe has a pot core which has a central bore, a pot chamber coaxial to the central bore accommodating a winding, and a pot rim. A pole-piece has one end fixed into the central bore and a free front-face with a coaxial recess machined therein such that an outer shell remains around the recess. A hard-metal pin is seated in the recess and has a front-face forming a crowned contact surface which stands a little proud of the pot rim. A coaxial annular disk made of highly permeable magnetic material has an outer edge in contact with the pot rim, a non-magnetic slot, and an intrados-radius surface having a diameter greater than the diameter of the pole-piece but significantly smaller than the diameter of the pot chamber.

Abstract: A pourer pipe for fitting on a can has a rigid end part which can be introduced into the filler pipe of a motor vehicle tank. The rigid end part is angled and equipped with at least two separate vent passages, making the pourer pipe universally usable for filler pipes which extend approximately vertically and filler pipes which extend nearly horizontally. According to the course of the filler pipe, one of the vent passages acts, as intended, as passage for air moving in the opposite direction.