Note, in FIG 4, that {HEAD ~ the transmitter} 47 and the antenna 49 may be mounted on {TAIL ~ the pendulum} 86 
mounted on
Note , in FIG 4 , that { HEAD ~ the transmitter } 47 and the antenna 49 may be mounted on { TAIL ~ the pendulum } 86
OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH