The containers may be hinged together on {HEAD ~ one side} to form {TAIL ~ sample cases} and detachably connected to the dolly 
to form
The containers may be hinged together on { HEAD ~ one side } to form { TAIL ~ sample cases } and detachably connected to the dolly
OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH