Originally Posted by Cons_Table
...so what part of a bottle jack is "unsafe?"
I guess what my thinking was, that a bottle jack (usually) has a small point of contact and narrow base. The PO said his contact point was the size of a quarter.
I was merely suggesting, that a safer alternative would be a sturdy floor jack, one with a large cup or area that would hold more of your Jeep.
I didn't get that the PO was looking for a jack for out on the train, but maybe I'm wrong.