It is a Toe Jack, called that because the toe of the jack fits under the thing to be jacked in a very small space. My shed sits on steel beams on a sloped pool deck. In really hot weather like we've been having, the steel beams flex and the door doesn't fit right in the frame. There are two ways to fix the problem: jack up the shed to support the beams properly; or rehang the door so it better fits the crooked door frame. Now that I have the Toe Jack, I'm opting for the first option to Jack it up to properly support it in the heat. The door fits fine in the winter when the beams don't flex because of the heat.
George Wells 
Lucas 
