a hydrometer checks the state of battery charge using specific gravity.
to check how much electrolyte is present in the battery
It is an instrument to measure or gauge density of gravity.
Hydrometer measure the density of liquids.
It measured by the density of the size from the hydrometer.
Salinometer
The hydroscope (also called the hydrometer) is thought to be invented by Hypatia of Alexandria. If this is true, the first hydroscope was invented in the 4th century.
A hydrometer is used to find the specific gravity (or relative density) of liquids.
Mrs.Tuft used a hydrometer to determine the specific gravity of a liquid
a mathimatical term called a unit of hydrometer is what the study of gravity and other measurements
yes some one toldme to run a wire from the batery..
Hydrometer
it is liquid