{TAIL ~ Manual application} of a push type force to a handle actuates a cumulative timer circuit for recording the elapsed time at which {HEAD ~ an exerted force} exceeds a pre established threshold force 
{ TAIL ~ Manual application } of a push type force to a handle actuates a cumulative timer circuit for recording the elapsed time at which { HEAD ~ an exerted force } exceeds a pre established threshold force
TAIL TAIL TAIL TAIL TAIL TAIL OTH 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 OTH OTH OTH OTH OTH