A mechanical connection is provided for a microelectromechanical and/or nanoelectromechanical device for measuring a variation in pressure. The device includes a fixed component extending in a main plane, a mobile component to move or deform in an out-of-plane direction under effect of a variation in pressure, and a detector of movement or deformation having at least one mobile element. The mechanical connection includes: a lever arm; a first connection connecting the mobile component to a first end of the lever arm, the first connection transmitting out-of-plane movement of the mobile component to the first end of the lever arm while allowing out-of-plane rotation of the lever arm about a direction of rotation; a second connection connected to the second end of the lever arm to allow mainly an out-of-plane rotation of the lever arm about an axis of rotation extending in the direction of rotation; a third connection connecting the lever arm to the detector at a given distance from the axis of rotation in the out-of-plane direction, the third connection being designed to convert the rotation of the lever arm about the axis of rotation into a translation in the plane of the at least one mobile element in a direction of translation.