We prepared a transgene comprising human HB-EGF precursor cDNA, as a diphtheria toxin receptor gene, at the downstream of an insulin promoter, and introduced this transgene into a mouse fertilized egg, to produce a transgenic mouse of the present invention. The pneumatic control system supports a mass sensitive to vibration and isolates the mass from high frequency external disturbances. They are also easy to manufacture and provide fast and accurate reading over a wide range of inclination angles of up to 360\xb0.