A load pin, having at least one sensor, is mounted through the universal joint type coupler as a pivot pin and is oriented within the universal joint type coupler so that {HEAD ~ at least some} of {TAIL ~ the installation torque} is transmitted through said load pin and is measurable by said at least one sensor 
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A load pin , having at least one sensor , is mounted through the universal joint type coupler as a pivot pin and is oriented within the universal joint type coupler so that { HEAD ~ at least some } of { TAIL ~ the installation torque } is transmitted through said load pin and is measurable by said at least one sensor
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