Measure 15: Distance elbow-wrist

Look for the protuberance of the end of the ulna (near the wrist).

Place the tape measure UNDER the protuberance (in the narrowest point of the wrist) to the elbow.

Move on this prospective and take the picture.

Always take care of: Try to take exactly the same picture you see above.
We have to see the edge of the tape measure (the metallic part as shown in the picture).

If you are not sure about a picture, take more pictures.
(Don't worry, if you would take a wrong picture or wrong measure we will ask you to do it again)