In a preferred embodiment, the switch mechanism is affixed to the first force translation plate, and has {HEAD ~ a depressible element} that extends toward {TAIL ~ the second force translation plate} 
extends toward
In a preferred embodiment , the switch mechanism is affixed to the first force translation plate , and has { HEAD ~ a depressible element } that extends toward { TAIL ~ the second force translation plate }
OTH 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 OTH REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL