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