As shown in FIG 1, the housing is fitted closely around the units, the amount of {TAIL ~ clearance} being substantially that which is regarded as conventional, namely sufficient to permit {HEAD ~ rocking} and vibration of the units on their spring mountings without danger of striking the housing 
As shown in FIG 1 , the housing is fitted closely around the units , the amount of { TAIL ~ clearance } being substantially that which is regarded as conventional , namely sufficient to permit { HEAD ~ rocking } and vibration of the units on their spring mountings without danger of striking the housing
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH