BUAHAHAH. Calibrating humans? Wow, someone is bored at work. Either that or a major geek. I remember that for some 2/300 class at Uni they calculated how much pressure they used to polish something by the weight of an apple, or something like that. I was in the next wear where that lab was made easier. Insert sample into machine, press 'on' (after making sure the settings are right, but it amounted to pressing 'on'), wait 10 minutes. Lubricate as needed. Wash samples. Repeat.

Anyways, UAHAHAH.