Tightening the cassette locking nut on the Campagnolo wheel

This is the worn out Shimano cassette, soaking in Simple Green.
The cassette is trash but I want to keep it as an example of what a truly worn gear looks like (compared to a new one).

The tightening torque is 50 Nm (about 37 ft-lb).
I used my human calibrated torque wrench.

This wheel is now ready to go, as a spare.