A tool 1 wherein said coupling of said first toggle link is effected at said {HEAD ~ second pivot point} of {TAIL ~ said second arm} and said coupling of said second toggle link is effected at said first pivot point of said first arm 
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A tool 1 wherein said coupling of said first toggle link is effected at said { HEAD ~ second pivot point } of { TAIL ~ said second arm } and said coupling of said second toggle link is effected at said first pivot point of said first arm
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL 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