| 摘要 |
A water level indicator for use with a fillable base for supporting a basketball goal is disclosed. The water level indicator may be attached to the fillable base and may alert a user when the level of water contained in the base drops below a predetermined level. In one embodiment, a mechanical device having a rotatable lever arm with a floating portion attached to one end and a display attached to the other end may be utilized. The floating portion may be configured to float on top of water contained in the base and the display may be configured to indicate to a user when the base should be refilled with water. In another embodiment, an electrical device having two metal probes, an alert and a power source may be utilized. When water in the base is in contact with the metal probes, a circuit may be completed between the metal probes, the alert and the power source. When water does not contact the metal probes, the circuit may be broken and the alert may be configured to indicate to a user when the base should be refilled with water. In yet another embodiment, a combination of mechanical and electrical devices may be used to indicate the level of water in the base. This may include a lever arm attached to a buoyant portion which is connected to a resistor. The movement of the arm may cause the resistor to adjust the voltage passing through a circuit to move an indicator which may indicate the level of water in the base.
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