A mechanism for modifying a language of a user interface in a computing device. The linear probes are inserted into the carrier plate, the guide correction layer, and the clamp pin layer such that their inner extremities are fixed at the clamp pin layer and their outer extremities are situated at the carrier plate position. The flow splitter comprises substantially equal mass annular flow areas defined by a first outer frustoconical element and the diffuser wall, a second element defining with the first element a second annular area and a central bluff disk defining with the second element the interior annular area. A detector is provided to detect by said slow dynamics induced material elastic modulus changes as indications of damages of the material or object. The illusion of seamless network connectivity is provided by having these access points coordinate with a core server to perform user authentication, device address assignment, and handoff services. Porous cover has a rear opening flap for permitting removal of the permanently sealed main body.