A miter saw has a base, a turntable, {HEAD ~ a cutting unit}, and {TAIL ~ a support unit} 
A miter saw has a base , a turntable , { HEAD ~ a cutting unit } , and { TAIL ~ a support unit }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL