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Priority to ES1978239931UpriorityCriticalpatent/ES239931Y/en
Publication of ES239931UpublicationCriticalpatent/ES239931U/en
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Publication of ES239931YpublicationCriticalpatent/ES239931Y/en
Improved electrical level, essentially characterized by the fact that it comprises, inside its constituent body, an electrical circuit, powered by a built-in battery, to which a lamp is connected, visible through a conventional window, whose circuit has a switch counter the combination of a pendulum, connected to a pole of the battery, and a balance-needle, properly compensated, are coincident at a critical point with the position of the pendulum, for closing the circuit, in two opposite positions at 90º to the the needle, respectively, is in perfect parallel with the horizontal or vertical position of the body of the level, indicating said positions with the lighting of the lamp. (Machine-translation by Google Translate, not legally binding)