The invention relates to a measuring transducer comprising a housing and an inner part arranged in the housing. The inner part comprises at least one curved measuring tube (10) which vibrates at least intermittently during operation and is used to guide the medium, and a counter-oscillator (20) which is fixed to the measuring tube (10) on the inlet side in such a way as to form a coupling region (11#), and on the outlet side in such a way as to form a coupling region (12#). The inner part is held in a vibrating manner in the converter housing at least by means of two connection tubular pieces (11, 12) which enable the measuring tube (10) to communicate with the tubular line during operation, and which are oriented in relation to each other and to an imaginary longitudinal axis (L) of the measuring transducer, such that the inner part can oscillate about the longitudinal axis (L) during operation. The counter-oscillator is formed from two plates, the first of said plates being arranged on the left side of the measuring tube and the second on the right side thereof.