How do you measure string spacing? From center of one string to the center of the adjacent string I would think. Yes/No? [EDIT: at the bridge, yeah, I know that.] What if you have a bridge with adjustable string spacing and all the strings might not be exactly the same distance apart? Center of top string to center of bottom string and divide by the apropriate number [distance/(# of strings minus 1)] to get an average spacing? Or just the center of the adjustment of the bridge saddles even if you don't have your's in that position? I know it doesn't matter if it feels right. But I hear people talking about 19mm spacing and 21mm spacing, etc. Just curious.