THE BALL INDICATOR

BALL INDICATORIf, during the filling of high capacity water (e.g. drums) intended for watering the garden, throwing a rubber ball of small size, its appearance over the edge of prompts to close the valve. Thereby eliminating the need for constant monitoring of the level of a cursory glance.

 

N. SVIRIDENKO, p. Pervomayskiy, Kazakhstan

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