Disclosed is a system for leveling an object, e.g., cabinet, bathroom divider, using a system that is contained in a box that is splitable into two symmetrical halves. Each half has a clutch operated vertically-adjustable support member with a threaded upper end. Extension members of various lengths can be used to accommodate the need for different supporting heights. Regardless of whether an extension member is used or not, a clutch release allows the support to be raised to approximately the right height on each side underneath the object, and then a thumb-screw operated system allows for fine tuning. The system can be used to support and level heavy objects by a single worker.