Professional tester for battery

Hydrometer for eletrolit battery. Measured the density of the electrolyte. Measuring range: 1.100-1.300g / cm3. Range Inadmissibly charged battery: 1.100-1.150g / cm3. Range half-full batteries: from 1150 to 1.250g / cm3. Range fully charged battery: from 1.250 to 1.300g / cm3. Suitable for batteries: 6v, 12v, 24v. Material: sturdy plastic, rubber. Color display.