4
1.
Position your head at the same horizontal level as the
member’s head so you are looking straight into the
member’s ear. (a)
2.
Hold the measurement tool with the appropriate blue or
red color code marking so your thumb is placed on the
colored area. (b)
3.
Place the measurement tool on the top of the ear. Keep
the lines on the measurement tool horizontal. (b)
4.
Choose the number (0, 1, 2 or 3) on the measurement
tool which is closest to the top of the opening of the ear
canal. In this example, 0 would be the most accurate
choice. (c)
5.
For binaural fittings, repeat the process on the opposite ear.
Note:
It is important to measure both ears for a binaural fitting since right
and left ear sizes can vary and may require different receiver lengths.
0
1
2
3
b
a
c
right
left
Selecting the receiver length
