A sample changer for {HEAD ~ a balance} with {TAIL ~ a weighing pan} has at least two sample carriers that are spaced apart from each other 
with
A sample changer for { HEAD ~ a balance } with { TAIL ~ a weighing pan } has at least two sample carriers that are spaced apart from each other
OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH