Several years ago it became apparent that the downsizing of the American vehicles was destined to cause the pop up trailer to increase in demand. A study was initiated to see if hydraulics or other convenience devices could be developed for this part of the RV industry. The result was the development of a miniature hydraulic system to level the fold down camper, a variation of the hydraulic system to raise the roof on the pop up vehicle, and a family of special sockets to raise and lower the roof and stabilizer jacks. Variations of the Socket Jenie product line also will operate levelers and jacks for 5th wheel and truck insert campers.