A rice polisher for polishing rice, which is a preprocess necessary for producing pre-white rice having a favorable taste by using a small amount of water, a pre-polished rice producing apparatus that uses the rice polisher, a leveling device capable of uniformly leveling grains, and a pre-polished rice producing facility. A main portion of the cape includes a neck opening for the head of the patron. The fixing protrusion includes a supporting portion formed at an end of the fixing protrusion and coupled to the base substrate when the lamp-fixing member is slid. The heating element may be a dummy power amplifier. In one embodiment, the number of secondary bonus awards is determined based on the number of active gaming machines.