Features: 1.Professional for measuring acidity and alkaline storage battery solution, provides you a more exact data. 2.The high-quality glass rubber material is more conducive to observing the value and brings more convenience to your inspection. 3.Small and light in weight, and convenient for you to carry, it can reduce your burden. 4.When using, you just need to put the meter vertical immerse in a transparent container, then you can read electric liquid density from the table at any time. 5.Its main function is for measuring electric battery fluid density, you can use it in any car. Specification: Condition: 100% Brand New_x000D_ Item Type: Battery Hydrometer_x000D_ Material: Glass + Rubber_x000D_ Color: As the Picture Shown_x000D_ Measure Range: 1.10-1.30_x000D_ Whole Length: Approx. 275mm/10.8in Note: It is not easy to master the concentration ratio of water in battery, so the densitometer is very important. Usually the density of the electrolyte should be controlled at 1.27.