Device for measuring a mass flow according to the Coriolis principle comprises impeller driven at a constant speed, on which the flow of materials is fed, redirected and accelerated, and whereby the torque of the impeller is measured. The second material has a different index of refraction andor stiffness than the substrate so that stretching and unstretching of the substrate and the second material can induce wrinkles in the second material that interacts with light thereby allowing reversible change from a transparent state to an opaque or iridescent state, and vice versa. The retainer includes mounting bolts for mounting the airbag to a predetermined mounting position. The remaining groups of switches are selected, in turn, until all of the TDO signals have been transmitted. It includes, among other things, a message buffer for storing the message being evaluated, a decoder circuit for decoding and executing corresponding actions or treatments, and one or more content-addressable memories that are programmed to store the regular expressions used to search the message.