I couldn't help but notice that the diagram seems to be in conflict with that quote. If force = torque/distance, shouldn't the 2 inch arm show 48oz/2 = 24oz of force? And that would reverse as well with the torque = force x distance where 24oz of force x 2 inches = 48 oz of torque. It would make sense when lengthening the servo arm, resulting force gets lowered. Does that seem right?