How to measure bideltoid width?

[Amexmaxx]

?????

 

[khvirgin]

measuring tape

 

[Deleted member 7509]

Took me about 5-10 seconds to copy that question and find answer in google

 

[Constantin Denis]

It's rather hard to do it in front of the wall. You better get 2 books and lay on the ground on your back. Then ask someone to place to books in front of your shoulders, or place them yourself, measure distance.