Abstract: A medical diagnostic and monitoring apparatus for electronically measuring a patient's internal body temperature and pulse frequency. An electrothermic transducer and an electroacoustic transducer are placed within a yieldable mounting pad attached to a flexible shoulder strap and provide a signal sending unit. The sending unit is adapted for placement in an underarm axillary space for temperature detection and pulse sensing. A portable display console includes a power source for actuating output signals from the sending unit and includes digital logic circuitry for processing and converting the signals for readout on a visual numeric display.