An inertia disc mounts within the housing, mounting to the housing through a spherical bearing which permits {HEAD ~ rotational and radial displacement} of the inertia disc relative to {TAIL ~ the housing} 
relative to
An inertia disc mounts within the housing , mounting to the housing through a spherical bearing which permits { HEAD ~ rotational and radial displacement } of the inertia disc relative to { TAIL ~ the housing }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH REL REL TAIL TAIL TAIL TAIL TAIL TAIL