A shearing device 1, wherein the axis of {HEAD ~ rotation} of {TAIL ~ each disc} lies between the tip of the blade and its pivot 
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A shearing device 1 , wherein the axis of { HEAD ~ rotation } of { TAIL ~ each disc } lies between the tip of the blade and its pivot
OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH