Power Tool Consumables -Accurate Water Level Gauge For Plant Moisture Meter 22.5cm Water Gauge Highlights brand generic Accurate Water Level Gauge For Plant Moisture Meter 22.5 Cm Water Gauge Description: No batteries or electricity needed, plug in and use. This water level gauge is used for flower pots. It can display the water level to remind you to water. When there is no water in the pot, the water level gauge buoy will be at the bottom. On that note, raise the water level and water the plants through the hole. Simply insert the level into the ground and it will help your plants grow healthy and strong. A perfect tool for indoor and outdoor use. specification: Material: plastic Size: 22.5cm/8.85in 20cm/7.87in 34cm/13.38in 16.5cm/6.49in Package includes: 1 water level Note: Do not pour too much water, it is better to leave the buyo below the upper water mark.