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