Description _x005F_x000D__x005F_x000D_The item is a floating hydrometer. This product is constructed with glass material for long-lasting and practical use, which can directly with water but bring no odor into water. It offers accurate measurements. This hydrometer can be widely used in fish tank and aquarium ._x005F_x000D__x005F_x000D_ Feature _x005F_x000D__x005F_x000D_- Color: As shown_x005F_x000D_- Material: Glass_x005F_x000D_- Size: About 20x1.3x1.3cm._x005F_x000D_- Test Range: 0-40 1.000-1.060._x005F_x000D_- Made of premium glass material which can directly with water._x005F_x000D_- Placed in any corner of the fish tank, floating design, automatic temperature/salinity testing._x005F_x000D_- It is convenient to test the specific gravity and temperature of water._x005F_x000D_- In the aquarium, it is convenient to measure the specific gravity of the sea water and provide convenience for raising fish._x005F_x000D_- It is easy to use and suitable for fish tank and aquarium.Packing list: 2 x Hydrometer