Perfected indicator of the water level for boilers and other containers intended to contain liquids at a constant level (Machine-translation by Google Translate, not legally binding)

摘要

Improved indicator of water level for boilers and other containers intended to contain liquids at a constant level characterized by being combined with an electric switch that automatically and directly dependent on the level of the liquid establishes or interrupts an electrical circuit by means of which the mechanism is governed intended to maintain that constant level or any other device. (Machine-translation by Google Translate, not legally binding)