Doppler device - a question

  1. Is a Doppler ultrasonic flowmeter the same as a Doppler ultrasonic stethoscope?

    In my textbook - the explanation is to use the flowmeter, for example on an obese person's arm - by placing the cuff on the forearm, holding the Doppler probe perpendicular to the artery.
    Later in the same textbook, there is description of using the Doppler stethoscope, over a pulse site, swiveled at a 45-degree angle.

    Are these the same or different devices?
    Which angle is the correct position?
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  3. by   meownsmile
    I think that would be a great question and observation to point out to your instructor.