Patent ID: 7780128

Claim:
A system for leveling relative to a basis surface, the system comprising: an object having a first side confronting the basis surface, a second side opposite the first side, and an unthreaded hole between the first and second sides; a rod positioned in the unthreaded hole to extend beyond the first side of the object to space the object from the basis surface and beyond the second side of the object to provide access to the rod; and, first and second couplers to couple the rod and the object, the first and second couplers each comprising a respective threaded hole threadably engaged with the rod to a position in which respective surfaces of the first and second couplers are in contact with, and rotationally stationary with respect to, the first and second sides of the object, respectively, to pinch the object between the first and second couplers such that rotation of the rod translates into translational displacement of the first and second couplers and the object.