| 摘要 |
A level assembly includes an elongated housing that has a first end, a second end and a perimeter wall. The perimeter wall includes a front wall, a back wall, a first side wall and a second side wall. The housing has a plurality of apertures therein. Each of the apertures extends into the front wall. Each of the apertures has one of a plurality of levels mounted therein. A plurality of light emitters is mounted in the housing. Each of the apertures has one of the light emitters directed therein. The light emitters illuminate adjacently positioned ones of the levels when the light emitters are turned on. A power supply is mounted within the housing and is electrically coupled to the light emitters. An actuator is mounted on the housing and is electrically coupled to the power supply. The actuator is actuated to turn the light emitters on or off.
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