three. Insert the Listening to instrument to the client's ear while Keeping the probe tube so that its placement inside the ear canal isn't disturbed. Make sure the hearing help is turned off. Subtract the REUR within the REAR throughout frequencies or subtract the REUG with the REAG throughout https://youtu.be/6Cstbsv3DOA?si=UQNio5eGw8lcZCnX