How do I do it? On the handle, there are two sets of numbers 0-9. On the shaft, there are marks for inch lbs going up 120, 240, etc up to 840. On the other side of shaft are lines to set m-kgs, I'm assuming that's what the other set of 0-9 on the handle are for. So a half revolution of the handle (10 units) sends it up one notch on the shaft (increments of 120 lb-inches). So I add 12 inch lbs for every notch on the handle that I turn? That makes the most sense but seems pretty weird.