Each push button has a carriage adapted to be fitted on {HEAD ~ one side} with {TAIL ~ an optional leaf spring contactor} engageable with fixed contact members 
with
Each push button has a carriage adapted to be fitted on { HEAD ~ one side } with { TAIL ~ an optional leaf spring contactor } engageable with fixed contact members
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH