How strong is LEVEL-it®?

One day Sam had to get this heavy milling/drilling machine onto the moveable base he'd made for it. There wasn't anyone around to help him and he didn't want to wait. But he had a LEVEL-it®! (I think he'd been wanting to do something like this for a long time.) He made this crane, mounted it onto a LEVEL-it®, attached the back legs of the LEVEL-it® to the floor with some angle brackets, attached the top of the crane to a roof truss, got the chain hoist and lifted away. I had words with him about this later, but by then the milling/drilling machine was in place.