{HEAD ~ A resilient member} 27 is engaged with {TAIL ~ the projections} 26 at the lower end of the casing 23 for steadying the motion of the oscillating arm 24 
is engaged with
{ HEAD ~ A resilient member } 27 is engaged with { TAIL ~ the projections } 26 at the lower end of the casing 23 for steadying the motion of the oscillating arm 24
HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH