the invention relates to a measuring apparatus for measuring a filling level of a container , which measuring apparatus has a measuring arm with a float element which is designed to change its angular position about a rotation axis depending on the filling level . a magnet element is connected to one end of the measuring arm in a rotationally fixed manner . a magnet - sensitive element is designed to output a measurement signal depending on the angular position of the magnet element . the measuring apparatus is characterized in that the measuring arm is mounted in a first bearing and additionally in a second bearing , wherein the magnet element is arranged in an intermediate space between the first bearing and the second bearing .