How do I measure my bideltoid width correctly? (Image reference)

[DownwardGrowthCel]

Should I just measure my actual frame, or should I measure on the red line where the clavicles ends?

 

[idontmogu]

red line

 

[IronStapler]

Bidlet is just end of shoulder to end of shoulder so red line ensuring it is straight

 

[EmperorVon]

Biacromial is shoulder bone to bone, bideltoid includes the flesh and muscle, measure the widest part for bideltoid

 

[DownwardGrowthCel]

Biacromial is shoulder bone to bone, bideltoid includes the flesh and muscle, measure the widest part for bideltoid

everyone says different stuff. you have most posts and reps. i will listen to you