{HEAD ~ Gravity} flexes the opposite end of the beam or {TAIL ~ wire} into contact with the tubular case, creating a closed electrical circuit 
{ HEAD ~ Gravity } flexes the opposite end of the beam or { TAIL ~ wire } into contact with the tubular case , creating a closed electrical circuit
HEAD HEAD HEAD HEAD HEAD 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