["Features:\r\nFunction: professional for measuring acidity and alkaline storage battery solution.\r\n\r\nHow to assemble:\r\n1. Assemble the red rubber,there is a hole on it, mainly for protecting the densimeter from being sucked into the gasbag.\r\n2. Put the densimeter into the glass tube.\r\n3. Assemble the sucking for head.\r\n4. Then assemble the gasbag.\r\nIts main function is for measuring electric battery fluid density.\r\nWhen using, put the meter vertical immerse in a transparent container, then you can read electric liquid density from the table at any for time. \r\n\r\nNotice:\r\nIt 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.\r\n\r\nSpecifications:\r\nMeasure Range: 1.10-1.30\r\nWhole Length: 330mm/13\"\r\nQuantity: 1 Pc\r\n\r\nNote:\r\nPlease allow 1-3mm error due to manual measurement. pls make sure you do not mind before you bid.\r\nDue to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!\r\n\r\nPackage Contents:\r\n1 x Battery Hydrometer"]