| 摘要 |
An assembly of vertically stacked slabs is provided, any number of which are adapted to be placed beneath the low wheel of a camper trailer or other vehicle to level the vehicle. The slabs are separably connected to provide a portable unitary kit, and at one end of the kit each slab is tapered from its upper to its bottom surface, and the tapered surfaces of all of the slabs form an inclined ramp.
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