Move the patient’s head so that the Frankfort Plane is in a horizontal position (i.e parallel to the floor). The Frankfort Plane is an imaginary line passing through the external ear canal and across the lower bone of the eye socket, immediately under the eye. An additional check is to ensure that the measuring arm rests on the crown of the head, i.e. the top of the back half.
Instruct the patient to keep their eyes focused on a point straight ahead and to breathe in deeply. Ask the patient to tell you when s/he feels the stadiometer plate touching their head by raising a hand.
Ask the patient to step forwards. If the measurement has been done correctly the patient will be able to step off the stadiometer without ducking their head. Make sure that the head plate does not move when the patient does this.
Record the patient’s height in centimeters and millimetres. If a measurement falls between two millimetres, it should be recorded to the nearest even millimetre.