A circular saw has {HEAD ~ a housing} enclosing {TAIL ~ a motor} for driving an output shaft about an axis of rotation 
enclosing
A circular saw has { HEAD ~ a housing } enclosing { TAIL ~ a motor } for driving an output shaft about an axis of rotation
OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH