measuring sitbones?

[deskrider]

Sorry for the newbie question, but several of you have a trailer on your postings that says "measure your sitbones". I understand why those measurements might be useful but how does one do that? Is it something you should do before a bike fit?

[blackhillsbiker]

Here are a couple of ways: http://forums.teamestrogen.com/showthread.php?p=531568#post531568
And a very helpful thread by Muirenn:
http://forums.teamestrogen.com/showthread.php?t=39475