A micro element 25, comprising {TAIL ~ the angle} being between 120° and {HEAD ~ 130°} 
A micro element 25 , comprising { TAIL ~ the angle } being between 120 ° and { HEAD ~ 130 ° }
OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD