These guides are to help you take correct measurements if you need more help contact me 

Ear to ear measurement for bone conductive hearing aids 

Measure along hairline from ear to ear. The receiver has to sit in correct place which is on the bone that can be felt behind the ear.

Measure in cm using a tailors tape measure not a metal  one used for diy

Ear to ear measurement fit BTE and Cochlear Implant



Measure in cm using a tailors tape measure not a metal  one used for diy

Head circumference 

Measure around the whole head along the hairline.

 Measure in cm using a tailors  tape measure not a metal one used for diy