A BGS Hydrovolt Battery Acid Tester - 9671, ideal for checking the acid density and state of charge of batteries. Benefits: Shock resistant Easy to read and readable Ergonomic and suitable for tight spaces Features: Robust and durable plastic construction For monitoring the acid density and state of charge of batteries Immediately readable Low height, therefore ideal for measurements in confined spaces Measuring scale with coloured sections Fast filling of the measuring chamber without formation of air bubbles Hydrostatic non-return valve Packaging: One BGS Hydrovolt Battery Acid Tester - 967Delivered in original packaging.